Illuminating device and light module thereof

• US 9,312,247 B2
• Filed: 08/24/2013
• Issued: 04/12/2016
• Est. Priority Date: 12/27/2012
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Lee, Chun-Hsing, Chiang, Ya-Hui, Tsai, Ling-Yu, Shaw, Cheng-Da, Lu, Chien-Chun, Hu, Hung-Lieh
• Primary Examiner(s): TSO, LAURA K
• Application Number:
  US13/975,303
• Publication Number:
  US 20140185281A1
• Time in Patent Office: 962 Days
• Field of Search: 362/230, 362/231
• US Class Current: 1/1
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21S 8/06 by suspension
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 33/504 Elements with two or more wavelength conversion materials

Abstract

An illuminating device includes a first light module and a second light module. The first light module emits a first light beam to a first illuminating area, and the second light module emits a second light beam to a second illuminating area. The first light module includes a first blue chip emitting a blue light with a main wave peak from 461 nm to 480 nm.

Claims

1. An illuminating device, comprising:

a first light module emitting a first light beam to a first illuminating area, wherein the first light module comprises a first blue chip to emit a blue light;

a second light module emitting a second light beam to a second illuminating area; and

wherein the blue light emitted by the blue chip has a main wave peak in a range from 461 nm to 480 nm, and

wherein the second illuminating area is different from the first illuminating area.

2. The illuminating device as claimed in claim 1, wherein the first light module further comprises a fluorescent layer disposed on the blue chip.

3. The illuminating device as claimed in claim 2, wherein the fluorescent layer comprises a green phosphor and a red phosphor, and the blue light emitted by the first blue chip is to form the first light beam by passing through the fluorescent layer.

4. The illuminating device as claimed in claim 2, wherein the fluorescent layer comprises a yellow phosphor and a red phosphor, and the blue light emitted by the first blue chip is to form the first light beam by passing through the fluorescent layer.

5. The illuminating device as claimed in claim 2, wherein the first light module comprises a green chip to emit a green light.

6. The illuminating device as claimed in claim 5, wherein the fluorescent layer comprises a red phosphor to transform a part of the blue light emitted by the first blue chip to a red light, and the red light, the blue light, the green light are mixed to form the first light beam.

7. The illuminating device as claimed in claim 6, wherein the green light has a main wave peak in a range from 500 nm to 540 nm, and the red light has a main wave peak in a range from 620 nm to 680 nm.

8. The illuminating device as claimed in claim 1, wherein the first light beam and the second light beam are white light.

9. The illuminating device as claimed in claim 1, wherein the second light module comprises a second blue chip to emit a blue light, and the blue light emitted by the second blue chip has a main wave peak lower than the main wave peak of the blue light emitted by the first blue chip.

10. The illuminating device as claimed in claim 9, wherein the main wave peak of the blue light emitted by the second blue chip is in a range from 420 nm to 460 nm.

11. The illuminating device as claimed in claim 1, wherein the first light module has a first blue light hazard action factor, the second light module has a second blue light hazard action factor, and the first blue light hazard action factor is lower than the second blue light hazard action factor.

12. The illuminating device as claimed in claim 1, wherein the first light module has a first circadian stimulus factor, the second light module has a second circadian stimulus factor, and the second circadian stimulus factor is greater than or equal to the first circadian stimulus factor.

13. The illuminating device as claimed in claim 12, wherein the first circadian stimulus factor is 10% greater than second circadian stimulus factor.

14. The illuminating device as claimed in claim 1, wherein the first light beam has a first light beam fan angle from 30 degrees to 80 degrees.

15. The illuminating device as claimed in claim 1, wherein the first light beam and the second light beam have color temperatures from 2500K to 3500K, from 6000K to 7000 k, or from 4000K to 5000K.

16. The illuminating device as claimed in claim 1, wherein the first light module has a first luminous efficiency, the second light module has a second luminous efficiency, and the second luminous efficiency is greater than or equal to the first luminous efficiency.

17. The illuminating device as claimed in claim 16, wherein the second luminous efficiency is 10% greater than the first luminous efficiency.

18. The illuminating device as claimed in claim 1, wherein the first illuminating area is defined as an active area for users, and the second illuminating area is located at a wall and/or ceiling.

19. The illuminating device as claimed in claim 1, wherein the first light beam has a first optical axis, and a first angle between the first optical axis and a vertical direction is from 0 degree to 45 degrees, wherein the second light beam has a second optical axis, and a second angle between the second optical axis and the vertical direction is from 45 degrees to 90 degrees.

20. The illuminating device as claimed in claim 1, comprising a third light module emitting a third light beam to a third illuminating area.

21. The illuminating device as claimed in claim 20, wherein the third light module comprises a third blue chip to emit a blue light, and the blue light emitted by the third blue chip has a main wave peak lower than the blue light emitted by the first blue chip.

22. The illuminating device as claimed in claim 21, wherein the blue light emitted by the third blue chip has a main wave peak in a range from 420 nm to 460 nm.

23. The illuminating device as claimed in claim 20, wherein the first light module has a first blue light hazard action factor, the third light module has a third blue light hazard action factor, and the first blue light hazard action factor is lower than or equal to the third blue light hazard action factor.

24. The illuminating device as claimed in claim 23, wherein the first blue light hazard action factor is 10% lower than the third blue light hazard action factor.

25. The illuminating device as claimed in claim 20, wherein the first light module has a first circadian stimulus factor, the third light module has a third circadian stimulus factor, and the third circadian stimulus factor is greater than or equal to the first circadian stimulus factor.

26. The illuminating device as claimed in claim 25, wherein the third circadian stimulus factor is 10% greater than the first circadian stimulus factor.

27. The illuminating device as claimed in claim 20, wherein the third light beam is a white light having a color temperature from 2500K to 3500K, from 6000K to 7000 k, or from 4000K to 5000K.

28. The illuminating device as claimed in claim 20, wherein the first light module has a first luminous efficiency, the third light module has a third luminous efficiency, and the third luminous efficiency is greater than or equal to the first luminous efficiency.

29. The illuminating device as claimed in claim 28, wherein the third luminous efficiency is 10% greater than the first luminous efficiency.

30. The illuminating device as claimed in claim 20, wherein the second illuminating area is located at a wall or ceiling, and the third illuminating area is located at a ceiling or wall.

31. The illuminating device as claimed in claim 20, wherein the third light beam has a third optical axis, and a third angle between the third optical axis and a vertical direction is from 0 degree to 60 degrees.

32. An illuminating device, comprising:

a light module emitting a light beam,

wherein the light module comprises;

a blue chip to emit a blue light, and the blue light has a main wave peak in a range from 461 nm to 480 nm; and

a fluorescent layer, disposed on the blue chip, comprising a red phosphor to transform a part of the blue light to a red light.

33. The illuminating device as claimed in claim 32, wherein the fluorescent layer further comprises a green phosphor, and the blue light is to form the light beam by passing through the fluorescent layer.

34. The illuminating device as claimed in claim 32, wherein the fluorescent layer further comprises a yellow phosphor, and the blue light is to form the light beam by passing through the fluorescent layer.

35. The illuminating device as claimed in claim 32, wherein the light module comprises a green chip to emit a green light.

36. The illuminating device as claimed in claim 35, wherein the red light, the blue light, and the green light are mixed to form the light beam.

37. The illuminating device as claimed in claim 36, wherein the green light has a main wave peak in a range from 500 nm to 540 nm, and the red light has a main wave peak in a range from 620 nm to 680 nm.

38. The illuminating device as claimed in claim 32, wherein the light beam is a white light.

39. The illuminating device as claimed in claim 32, wherein the light beam has a first light beam fan angle from 30 degrees to 80 degrees.

40. A light module to emit a light beam, comprising:

a blue chip emitting a blue light; and

a fluorescent layer, disposed on the blue chip, comprising a red phosphor to transform a part of the blue light to a red light,

wherein the blue light has a main wave peak in a range from 461 nm to 480 nm.

41. The light module as claimed in claim 40, wherein the fluorescent layer further comprises a green phosphor, and the blue light is to from the light beam by passing through the fluorescent layer.

42. The light module as claimed in claim 40, wherein the fluorescent layer further comprises a yellow phosphor, and the blue light is to form the light beam by passing through the fluorescent layer.

43. The light module as claimed in claim 40, wherein the light module further comprises a green chip to emit a green light.

44. The light module as claimed in claim 43, wherein the red light, the blue light, and the green light are mixed to form the light beam.

45. The light module as claimed in claim 44, wherein the green light has a main wave peak in a range from 500 nm to 540 nm, and the red light has a main wave peak in a range from 620 nm to 680 nm.

46. The light module as claimed in claim 40, wherein the light beam is a white light.

47. The light module as claimed in claim 40, wherein the light beam has a first light beam fan angle from 30 degrees to 80 degrees.

48. An illuminating device, comprising:

a first light module emitting a first light beam to a first illuminating area, wherein the first light module comprises a first blue chip to emit a blue light;

a second light module emitting a second light beam to a second illuminating area; and

wherein the blue light emitted by the blue chip has a main wave peak in a range from 461 nm to 480 nm, and

wherein the first light module has a first blue light hazard action factor, the second light module has a second blue light hazard action factor, and the first blue light hazard action factor is lower than the second blue light hazard action factor.

49. An illuminating device, comprising:

a first light module emitting a first light beam to a first illuminating area, wherein the first light module comprises a first blue chip to emit a blue light;

a second light module emitting a second light beam to a second illuminating area; and

wherein the blue light emitted by the blue chip has a main wave peak in a range from 461 nm to 480 nm, and

wherein the first light module has a first circadian stimulus factor, the second light module has a second circadian stimulus factor, and the second circadian stimulus factor is greater than or equal to the first circadian stimulus factor.