Solar cell roof structure, construction method thereof, photovoltaic power generating apparatus, and building

• US 6,576,830 B2
• Filed: 12/03/1999
• Issued: 06/10/2003
• Est. Priority Date: 12/04/1998
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nagao, Yoshitaka, Shiomi, Satoru, Komori, Ayako, Inoue, Yuji, Mimura, Toshihiko, Mori, Masahiro, Sasaoka, Makoto, Makita, Hidehisa, Itoyama, Shigenori
• Primary Examiner(s): DIAMOND, ALAN D
• Application Number:
  US09/453,508
• Publication Number:
  US 20020134421A1
• Time in Patent Office: 1,285 Days
• Field of Search: 136/244, 136/291, 136/293, 521/733, 606/418, 438/64, 438/66, 438/73, 323/906, 307/149
• US Class Current: 136/244
• CPC Class Codes: H02S 20/23 specially adapted for roof structures
• CPC Class Codes: H02S 40/34 comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
• CPC Class Codes: Y02B 10/10 Photovoltaic [PV]
• CPC Class Codes: Y02B 10/20 Solar thermal
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y10S 136/291 Applications
• CPC Class Codes: Y10S 136/293 Circuits
• CPC Class Codes: Y10S 323/906 Solar cell systems

Abstract

In a solar cell roof structure, a photovoltaic power generating apparatus, a building and a method of construction of a solar cell roof, in which a solar cell module is provided above a roof base of a building, an electrical wire for the solar cell module is provided in a space between the solar cell module and the roof base, and the electrical wire extends into a space at the back of the roof base through a through hole provided in the roof base. A base sealing member on the roof base is provided for covering the through hole and an exit is provided in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base at a portion of the base sealing member other than a portion just over the through hole of the base sealing member. The base sealing member can include a heat-resisting or fire resistive material on the roof base for covering the through hole.

Claims

1. A solar cell roof structure, comprising:

a solar cell module above a roof base of a building;

an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire extending into the space through a through hole provided in the roof base; and

a base sealing member on the roof base, for covering the through hole, wherein

an exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided at a portion of the base sealing member other than a portion over the through hole, and wherein

the base sealing member seals an opening of the through hole through which the electrical wire extends, so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and a space at a back of the roof base.

2. The solar cell roof structure according to claim 1, wherein the base sealing member comprises a plurality of sealing members.

3. The solar cell roof structure according to claim 2, wherein at least two of the plurality of sealing members comprise the same material.

4. The solar cell roof structure according to claim 1, wherein the electrical wire between the solar cell module and the through hole is substantially in contact with the roof base.

5. The solar cell roof structure according to claim 1, wherein the base sealing member comprises at least first and second sealing members, and wherein the second sealing member surrounds the electrical wire at the peripheral portion of the through hole and covers the through hole and the peripheral portion thereof.

6. The solar cell roof structure according to claim 1, wherein the base sealing member comprises at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

7. The solar cell roof structure according to claim 1, wherein the base sealing member comprises at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

8. The solar cell roof structure according to claim 1, wherein the base sealing member comprises at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

9. The solar cell roof structure according to claim 8, wherein the first and the third sealing members are formed integrally.

10. The solar cell roof structure according to claim 1, wherein at least a portion of the base sealing member comprises a heat-resisting or fire resistive material.

11. The solar cell roof structure according to claim 1, wherein the base sealing member comprises a heat-resisting or fire resistive material.

12. The solar cell roof structure according to claim 1, wherein at least a portion of the base sealing member has non-permeability.

13. The solar cell roof structure according to claim 12, wherein the base sealing member comprises a non-permeable layer.

14. The solar cell roof structure according to claim 1, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

15. The solar cell roof structure according to claim 1, wherein the electrical wire is arranged in a circular shape in and over the through hole.

16. The solar cell roof structure according to claim 1, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

121. The solar cell roof structure according to claim 1 or 65, wherein the base sealing member is deformable.

125. The solar cell roof structure according to claim 1 or 65, wherein the base sealing member is comprised of a material which sets with the lapse of time.

129. The solar cell roof structure according to claim 1 or 65, wherein at least a part of the base sealing member is present between the peripheral portion of the through hole and the electrical wire so that the edge portion of the through hole and the electrical wire are not in contact with each other.

133. The solar cell roof structure according to claim 1 or 65, wherein the base sealing member will withstand a temperature higher than the melting point of the electrical wire.

137. The solar cell roof structure according to claim 1 or 65, wherein the base sealing member will withstand a temperature higher than the temperature at which wood ignites.

17. A method of constructing a solar cell roof comprising a solar cell module above a roof base of a building, an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire being drawn into the space through a through hole provided in the roof base, the method comprising the steps of:

providing a base sealing member on the roof base, for covering the through hole; and

providing an exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base at a portion of the base sealing member other than a portion over the through hole, wherein

the base sealing member seals an opening of the through hole through which the electrical wire extends, so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and a space at a back of the roof base.

18. The method according to claim 17, comprising using a plurality of sealing members as the base sealing member.

19. The method according to claim 18, wherein at least two of the plurality of sealing members comprise the same material.

20. The method according to claim 17, comprising arranging the electrical wire in the space between the solar cell module and the roof base substantially in contact with the roof base.

21. The method according to claim 17, comprising using at least first and second sealing members as the base sealing member and providing the second sealing member so as to surround the electrical wire at the peripheral portion of the through hole on the base member and to cover the through hole and the peripheral portion thereof.

22. The method according to claim 17, comprising using as the base sealing member at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

23. The method according to claim 17, comprising using as the base sealing member at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

24. The method according to claim 17, comprising using as the base sealing member at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

25. The method according to claim 24, wherein the first and the third sealing members are formed integrally.

26. The method according to claim 17, wherein at least a portion of the base sealing member comprises a heat-resisting or fire resistive material.

27. The method according to claim 17, wherein the base sealing member comprises a heat-resisting or fire resistive material.

28. The method according to claim 17, wherein at least a portion of the base sealing member has non-permeability.

29. The method according to claim 28, wherein the base sealing member comprises a non-permeable layer.

30. The method according to claim 17, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

31. The method according to claim 17, comprising arranging the electrical wire in a circular shape in and over the through hole.

32. The method according to claim 17, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

122. The method according to claim 17 or 79, wherein the base sealing member is deformable.

126. The method according to claim 17 or 79, wherein the base sealing member is comprised of a material which sets with the lapse of time.

130. The method according to claim 17 or 79, wherein at least a part of the base sealing member is present between the peripheral portion of the through hole and the electrical wire so that the edge portion of the through hole and the electrical wire are not in contact with each other.

134. The method according to claim 17 or 79, wherein the base sealing member will withstand a temperature higher than the melting point of the electrical wire.

138. The method according to claim 17 or 79, wherein the base sealing member will withstand a temperature higher than the temperature at which wood ignites.

33. A photovoltaic power generating apparatus, comprising:

a solar cell module above a roof base of a building;

an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire extending into the space through a through hole provided in the roof base; and

a base sealing member on the roof base, for covering the through hole, wherein

an exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided at a portion of the base sealing member other than a portion over the through hole, and wherein

the base sealing member seals an opening of the through hole through which the electrical wire extends, so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and a space at a back of the roof base.

34. The apparatus according to claim 33, wherein the base sealing member comprises a plurality of sealing members.

35. The apparatus according to claim 34, wherein at least two of the plurality of sealing members comprise the same material.

36. The apparatus according to claim 33, wherein the electrical wire between the solar cell module and the through hole is substantially in contact with the roof base.

37. The apparatus according to claim 33, wherein the base sealing member comprises at least first and second sealing members, and wherein the second sealing member surrounds the electrical wire at the peripheral portion of the through hole on the base member and covers the through hole and the peripheral portion thereof.

38. The apparatus according to claim 33, wherein the base sealing member comprises at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

39. The apparatus according to claim 33, wherein the base sealing member comprises at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

40. The apparatus according to claim 33, wherein the base sealing member comprises at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

41. The apparatus according to claim 40, wherein the first and the third sealing members are formed integrally.

42. The apparatus according to claim 33, wherein at least a portion of the base sealing member comprises a heat-resisting or fire resistive material.

43. The apparatus according to claim 33, wherein the base sealing member comprises a heat-resisting or fire resistive material.

44. The apparatus according to claim 33, wherein at least a portion of the base sealing member has non-permeability.

45. The apparatus according to claim 44, wherein the base sealing member comprises a non-permeable layer.

46. The apparatus according to claim 33, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

47. The apparatus according to claim 33, wherein the electrical wire is arranged in a circular shape in and over the through hole.

48. The apparatus according to claim 33, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

123. The apparatus according to claim 33 or 93, wherein the base sealing member is deformable.

127. The apparatus according to claim 33 or 93, wherein the base sealing member is comprised of a material which sets with the lapse of time.

131. The apparatus according to claim 33 or 93, wherein at least a part of the base sealing member is present between the peripheral portion of the through hole and the electrical wire so that the edge portion of the through hole and the electrical wire are not in contact with each other.

135. The apparatus according to claim 33 or 93, wherein the base sealing member will withstand a temperature higher than the melting point of the electrical wire.

139. The apparatus according to claim 33 or 93, wherein the base sealing member will withstand a temperature higher than the temperature at which wood ignites.

49. A building, comprising:

a solar cell module above a roof base of the building;

an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire extending into the space through a through hole provided in the roof base; and

a base sealing member on the roof base, for covering the through hole, wherein

an exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided at a portion of the base sealing member other than a portion over the through hole, and wherein

the base sealing member seals an opening of the through hole through which the electrical wire extends into the space, so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and a space at a back of the roof base.

50. The building according to claim 49, wherein the base sealing member comprises a plurality of sealing members.

51. The building according to claim 50, wherein at least two of the plurality of sealing members comprise the same material.

52. The building according to claim 49, wherein the electrical wire provided in the space between the solar cell module and the roof base is substantially in contact with the roof base.

53. The building according to claim 49, wherein the base sealing member comprises at least first and second sealing members, and wherein the second sealing member surrounds the electrical wire at the peripheral portion of the through hole on the base member and covers the through hole and the peripheral portion thereof.

54. The building according to claim 49, wherein the base sealing member comprises at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

55. The building according to claim 49, wherein the base sealing member comprises at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

56. The building according to claim 49, wherein the base sealing member comprises at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

57. The building according to claim 56, wherein the first and the third sealing members are formed integrally.

58. The building according to claim 49, wherein at least a portion of the base sealing member comprises a heat-resisting or fire resistive material.

59. The building according to claim 49, wherein the base sealing member comprises a heat-resisting or fire resistive material.

60. The building according to claim 49, wherein at least a portion of the base sealing member has non-permeability.

61. The building according to claim 60, wherein the base sealing member comprises a non-permeable layer.

62. The building according to claim 49, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

63. The building according to claim 49, wherein the electrical wire is arranged in a circular shape in and over the through hole.

64. The building according to claim 49, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

65. A solar cell roof structure, comprising:

a solar cell module above a roof base of a building;

an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire extending into the space through a through hole provided in the roof base; and

a base sealing member comprising a fire resistive material and covering the through hole and at least a portion at a periphery of the through hole so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and a space at a back of the roof base.

66. The solar cell roof structure according to claim 65, wherein the base sealing member comprises a plurality of sealing members.

67. The solar cell roof structure according to claim 66, wherein at least two of the plurality of sealing members comprise the same material.

68. The solar cell roof structure according to claim 65, wherein the electrical wire provided in the space between the solar cell module and the roof base is substantially in contact with the roof base.

69. The solar cell roof structure according to claim 65, wherein the base sealing member comprises at least first and second sealing members, and wherein the second sealing member surrounds the electrical wire at the peripheral portion of the through hole on the base member and covers the through hole and the peripheral portion thereof.

70. The solar cell roof structure according to claim 65, wherein the base sealing member comprises at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

71. The solar cell roof structure according to claim 65, wherein the base sealing member comprises at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

72. The solar cell roof structure according to claim 65, wherein the base sealing member comprises at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

73. The solar cell roof structure according to claim 72, wherein the first and the third sealing members are formed integrally.

74. The solar cell roof structure according to claim 65, wherein at least a portion of the base sealing member has non-permeability.

75. The solar cell roof structure according to claim 74, wherein the base sealing member comprises a non-permeable layer.

76. The solar cell roof structure according to claim 65, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

77. The solar cell roof structure according to claim 65, wherein the electrical wire is arranged in a circular shape in and over the through hole.

78. The solar cell roof structure according to claim 65, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

79. A method of constructing a solar cell roof comprising a solar cell module above a roof base of a building, an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire being drawn into the space through a through hole provided in the roof base, the method comprising the step of providing a base sealing member which is comprised of a fire resistive material and which covers the through hole and at least a portion at a periphery of the through hole so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and a space at a back of the roof base.

80. The method according to claim 79, comprising using a plurality of sealing members as the base sealing member.

81. The method according to claim 80, wherein at least two of the plurality of sealing members comprise the same material.

82. The method according to claim 79, comprising arranging the electrical wire in the space between the solar cell module and the roof base substantially in contact with the roof base.

83. The method according to claim 79, comprising using at least first and second sealing members as the base sealing member and providing the second sealing member so as to surround the electrical wire at the peripheral portion of the through hole on the base member and to cover the through hole and the peripheral portion thereof.

84. The method according to claim 79, comprising using as the base sealing member at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

85. The method according to claim 79, comprising using as the base sealing member at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

86. The method according to claim 79, comprising using as the base sealing member at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

87. The method according to claim 86, wherein the first and the third sealing members are formed integrally.

88. The method according to claim 79, wherein at least a portion of the base sealing member has non-permeability.

89. The method according to claim 88, wherein the base sealing member comprises a non-permeable layer.

90. The method according to claim 79, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

91. The method according to claim 79, comprising arranging the electrical wire in a circular shape in and over the through hole.

92. The method according to claim 79, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

93. A photovoltaic power generating apparatus, comprising:

a solar cell module above a roof base of a building;

an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire extending into a space at the back of the roof base through a through hole provided in the roof base; and

a base sealing member comprised of a fire-resistive material and covering the through hole and at least a portion at a periphery of the through hole so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and the space at the back of the roof base.

94. The apparatus according to claim 93, wherein the base sealing member comprises a plurality of sealing members.

95. The apparatus according to claim 94, wherein at least two of the plurality of sealing members comprise the same material.

96. The apparatus according to claim 93, wherein the electrical wire provided in the space between the solar cell module and the roof base is substantially in contact with the roof base.

97. The apparatus according to claim 93, wherein the base sealing member comprises at least first and second sealing members, and wherein the second sealing member surrounds the electrical wire at the peripheral portion of the through hole on the base member and covers the through hole and the peripheral portion thereof.

98. The apparatus according to claim 93, wherein the base sealing member comprises at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

99. The apparatus according to claim 93, wherein the base sealing member comprises at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

100. The apparatus according to claim 93, wherein the base sealing member comprises at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

101. The apparatus according to claim 100, wherein the first and the third sealing members are formed integrally.

102. The apparatus according to claim 93, wherein at least a portion of the base sealing member has non-permeability.

103. The apparatus according to claim 102, wherein the base sealing member comprises a non-permeable layer.

104. The apparatus according to claim 93, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

105. The apparatus according to claim 93, wherein the electrical wire is arranged in a circular shape in and over the through hole.

106. The apparatus according to claim 93, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

107. A building, comprising:

a solar cell module above a roof base of the building;

an electrical wire for the solar cell module provided in a space between the solar cell module and the roof base, the electrical wire extending into a space at the back of the roof base through a through hole provided in the roof base; and

a base sealing member comprising a fire resistive material and covering the through hole and at least a portion at a periphery of the through hole so as to prevent air flow via the through hole between the space between the solar cell module and the roof base and the space at the back of the roof base.

108. The building according to claim 107, wherein the base sealing member comprises a plurality of sealing members.

109. The building according to claim 108, wherein at least two of the plurality of sealing members comprise the same material.

110. The building according to claim 107, wherein the electrical wire provided in the space between the solar cell module and the roof base is substantially in contact with the roof base.

111. The building according to claim 107, wherein the base sealing member comprises at least first and second sealing members, and wherein the second sealing member surrounds the electrical wire at the peripheral portion of the through hole on the base member and covers the through hole and the peripheral portion thereof.

112. The building according to claim 107, wherein the base sealing member comprises at least a first sealing member provided at the peripheral edge portion of the through hole so as to suppress aeration through the through hole and a second sealing member covering the upside of the through hole.

113. The building according to claim 107, wherein the base sealing member comprises at least a noncombustible second sealing member covering the upside of the through hole and a flame-retardant first sealing member provided in a gap between the second sealing member and the roof base.

114. The building according to claim 107, wherein the base sealing member comprises at least a second sealing member covering the upside of the through hole, a first sealing member arranged at a peripheral portion of the through hole at the roof base side of the electrical wire, and a third sealing member arranged at a peripheral portion of the through hole at the solar cell module side of the electrical wire.

115. The building according to claim 114, wherein the first and the third sealing members are formed integrally.

116. The building according to claim 107, wherein at least a portion of the base sealing member has non-permeability.

117. The building according to claim 116, wherein the base sealing member comprises a non-permeable layer.

118. The building according to claim 107, wherein the roof base is inclined, and wherein the exit in the base sealing member through which the electrical wire extends into the space between the solar cell module and the roof base is provided in a direction downward the inclination with regard to the through hole.

119. The building according to claim 107, wherein the electrical wire is arranged in a circular shape in and over the through hole.

120. The building according to claim 107, wherein the solar cell module is a roofing material integrated solar cell module comprising a support means comprised of a noncombustible material.

124. The building according to claim 49 or 107, wherein the base sealing member is deformable.

128. The building according to claim 49 or 107, wherein the base sealing member is comprised of a material which sets with the lapse of time.

132. The building according to claim 49 or 107, wherein at least a part of the base sealing member is present between the peripheral portion of the through hole and the electrical wire so that the edge portion of the through hole and the electrical wire are not in contact with each other.

136. The building according to claim 49 or 107, wherein the base sealing member will withstand a temperature higher than the melting point of the electrical wire.

140. The building according to claim 49 or 107, wherein the base sealing member will withstand a temperature higher than the temperature at which wood ignites.