Lamp having outer shell to radiate heat of light source
First Claim
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1. A lamp comprising:
- an outer shell with heat conductivity, wherein the outer shell includes a light source support, and a heat radiating surface exposed to an outside of the outer shell, wherein the light source support is formed integrally with the heat radiating surface;
a base provided in the outer shell;
a board on which a thermal diffusion layer is integrally stacked on a rear surface of the board, the rear surface of the board being fixed to the light source support, the board being fixed to the light source support through a screw at a center thereof such that the thermal diffusion layer is disposed between the board and the light source support, and being thermally connected to the light source support, wherein the thermal diffusion layer includes a plurality of areas, wherein each of the plurality of areas is at least partially divided from another one of the plurality of areas by a respective slit of a plurality of slits in the thermal diffusion layer, each slit extending from an outer peripheral edge of the thermal diffusion layer in a radial direction toward the center of the board;
a plurality of heat generating light-emitting diodes mounted on the board at positions substantially evenly spaced from the center of the board so as to surround the screw; and
a translucent cover provided in the outer shell so as to cover the light-emitting diodes,wherein at least one light-emitting diode is located entirely within an area of the board defined by a region of the thermal diffusion layer surrounded by two adjacent slits and an imaginary line connecting respective ends of the two adjacent slits, the respective ends of the two adjacent slits being ends closest to the center of the board, wherein a first slit of the two adjacent slits is disposed on a first circumferential side of the at least one light-emitting diode and a second slit of the two adjacent slits is disposed on a second circumferential side of the at least one light-emitting diode.
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Abstract
A lamp includes an outer shell having heat conductivity, a base provided in the outer shell, and a cover provided in the outer shell. The outer shell has a light source support, and a heat radiating surface exposed to the outside of the outer shell. The light source support is formed integral with the heat radiating surface. A light source is supported on the light source support. The light source is heated during lighting, and thermally connected to the light source support. The light source is covered with the cover.
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Citations
17 Claims
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1. A lamp comprising:
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an outer shell with heat conductivity, wherein the outer shell includes a light source support, and a heat radiating surface exposed to an outside of the outer shell, wherein the light source support is formed integrally with the heat radiating surface; a base provided in the outer shell; a board on which a thermal diffusion layer is integrally stacked on a rear surface of the board, the rear surface of the board being fixed to the light source support, the board being fixed to the light source support through a screw at a center thereof such that the thermal diffusion layer is disposed between the board and the light source support, and being thermally connected to the light source support, wherein the thermal diffusion layer includes a plurality of areas, wherein each of the plurality of areas is at least partially divided from another one of the plurality of areas by a respective slit of a plurality of slits in the thermal diffusion layer, each slit extending from an outer peripheral edge of the thermal diffusion layer in a radial direction toward the center of the board; a plurality of heat generating light-emitting diodes mounted on the board at positions substantially evenly spaced from the center of the board so as to surround the screw; and a translucent cover provided in the outer shell so as to cover the light-emitting diodes, wherein at least one light-emitting diode is located entirely within an area of the board defined by a region of the thermal diffusion layer surrounded by two adjacent slits and an imaginary line connecting respective ends of the two adjacent slits, the respective ends of the two adjacent slits being ends closest to the center of the board, wherein a first slit of the two adjacent slits is disposed on a first circumferential side of the at least one light-emitting diode and a second slit of the two adjacent slits is disposed on a second circumferential side of the at least one light-emitting diode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13)
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10. A lighting apparatus comprising:
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a board including an attachment point configured for attachment to one or more other devices; a plurality of heat generating light-emitting diodes mounted on the board, wherein, of light-emitting diodes, only the plurality of heat generating light-emitting diodes are mounted on the board; a thermal diffusion layer stacked on a rear surface of the board, the rear surface of the board being fixed to the one or more other devices, the thermal diffusion layer being disposed between the board and the one or more other devices to conduct heat generated by the plurality of light-emitting diodes to the one or more other devices, wherein the thermal diffusion layer includes a plurality of areas, wherein each of the plurality of areas is at least partially divided from another one of the plurality of areas by a respective slit of a plurality of slits in the thermal diffusion layer, each slit extending from an outer peripheral edge of the thermal diffusion layer in a radial direction toward a center of the board; and a translucent cover covering the plurality of light-emitting diodes without any intervening covers, wherein at least one light-emitting diode is located entirely within an area of the board defined by a region of the thermal diffusion layer surrounded by two adjacent slits and an imaginary line connecting respective ends of the two adjacent slits, the respective ends of the two adjacent slits being ends closest to the center of the board, wherein a first slit of the two adjacent slits is disposed on a first circumferential side of the at least one light-emitting diode and a second slit of the two adjacent slits is disposed on a second circumferential side of the at least one light-emitting diode. - View Dependent Claims (14, 15, 16, 17)
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Specification