Lamp

• US 7,445,357 B2
• Filed: 05/09/2007
• Issued: 11/04/2008
• Est. Priority Date: 05/09/2006
• Status: Expired due to Fees

• Current Assignee: Herman Miller Incorporated
• Original Assignee: Herman Miller Incorporated
• Inventors: Behar, Yves, Janour, George, Gagne, Jacques L.
• Primary Examiner(s): TSO, LAURA K
• Application Number:
  US11/746,180
• Publication Number:
  US 20080062687A1
• Time in Patent Office: 545 Days
• Field of Search: 362/294, 362/410, 362/411, 362/433, 362/227, 362/231, 362/230, 362/800
• US Class Current: 362/294
• CPC Class Codes: F21S 6/002 Table lamps, e.g. for ambient lighting
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21S 6/006 for direct lighting only, e.g. task lighting
• CPC Class Codes: F21S 6/007 for indirect lighting only, e.g. torchiere with reflector bowl directed towards ceiling
• CPC Class Codes: F21S 8/06 by suspension
• CPC Class Codes: F21V 21/26 Pivoted arms
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 27/00 Cable-stowing arrangements structurally associated with lighting devices, e.g. reels storing lengths of cable in general B65H; the lighting devices being vehicle headlamps F21S41/192; the lighting devices being vehicle lights F21S43/195
• CPC Class Codes: F21V 29/71 using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

An assembly for use with a lamp including the lights, structures for dissipating heat, and controls for controlling the intensity and light temperature emitted by the assembly. Included are structures which allow the lamp to adjust the assembly to a desired position and a small compact configuration. The assembly can be used in a variety of lighting configurations including a desk lamp, floor lamp, wall lamp, ceiling or suspended lamp. A printed circuit board carries the lights and is sandwiched between two heat sinks for dissipating heat from the lights. Passages and openings are provided in the assembly for dissipating heat. A lenses are provided relative to the lights.

Claims

1. An lighting assembly for use with a lamp, the lighting assembly comprising:

a platform;

a printed circuit board having a first side and a second side;

at least one solid state lighting device attached to the first side of the circuit board;

a first heat sink positioned proximate to the first side of the circuit board;

a second heat sink positioned proximate to the second side of the circuit board and between the circuit board and the platform; and

a cover positioned over the second heat sink.

2. The lighting assembly of claim 1, further comprising passages formed in the platform for transfer of heat away from the second heat sink.

3. The lighting assembly of claim 1, further comprising concave dimples formed in the platform and at least one passage formed in each of the concave dimples for transfer of heat away from the second heat sink.

4. The lighting assembly of claim 1, further comprising opening formed in the second heat sink for allowing passage of light from the lighting device.

5. The lighting assembly of claim 1, further comprising convex dimples formed in the second heat sink and at least one opening formed in each of the convex dimples.

6. The lighting assembly of claim 4, further comprising the opening being sized and dimensioned to allow at least a portion of the lighting device to extend there through.

7. The lighting assembly of claim 1, further comprising at least one fastener extending through the platform, second heat sink, circuit board, and engaging the first heat sink for retaining the assembly on the platform.

8. The lighting assembly of claim 1, further comprising:

a plurality of lighting devices arranged on the circuit board;

a plurality of passages formed in the platform corresponding to the arrangement of the lighting devices on the circuit board for transfer of heat away from the second heat sink;

a plurality of openings in the first heat sink corresponding to the arrangement of the lighting devices on the circuit board for transfer of heat away from the first heat sink; and

each of the openings formed in the second heat sink sized an dimensioned for allowing passage of light from the lighting device.

9. The lighting assembly of claim 8, further comprising the cover having a plurality of lenses configured corresponding to the arrangement of lighting devices on the circuit board.

10. The lighting assembly of claim 9, further comprising the lenses of the cover being connected by bridges.

11. The lighting assembly of claim 9, further comprising the lenses being generally optically transparent.

12. The lighting assembly of claim 9, further comprising the lenses being configured for focusing the light emitted by the lighting devices.

13. The lighting assembly of claim 9, further comprising the lenses being configured for diffusing the light emitted by the lighting devices.

14. The lighting assembly of claim 9, further comprising the lenses being configured for focusing the light emitted by the lighting devices, each lens being configured for directing light from the corresponding lighting device in predetermined direction.

15. The lighting assembly of claim 9, further comprising the cover being formed of a generally heat insulating material, a handle on the cover for gripping the lighting device.

16. The lighting assembly of claim 1, wherein the second heat sink is thermally coupled to the platform for transferring heat form the second heat sink to the platform to help dissipate heat from the lighting device.

17. The lighting assembly of claim 1, wherein a space is defined relative to the second side of the platform to provide a path for convection air currents to flow through the space, past at least the second heat sink and through the passages in the platform to help dissipate heat energy away from the lighting assembly.

18. The lighting assembly of claim 1, further comprising:

a plurality of lighting devices arranged on the circuit board;

a plurality of concave dimples formed in the platform corresponding to the arrangement of the lighting devices on the circuit board, each of the concave dimples having a passage there through for transfer of heat away from the second heat sink;

a plurality of convex dimples formed in the second heat sink corresponding to the arrangement of the lighting devices on the circuit board, each of the convex dimples having an opening there through for transfer of heat away from the first heat sink; and

each of the openings formed in the second heat sink for allowing passage of light from the lighting device and the opening being sized and dimensioned to allow at least a portion of the lighting device to extend there through.

19. The lighting assembly of claim 1, further comprising:

a plurality of lighting devices arranged on the circuit board;

at least one of the lighting devices is a cool LED; and

at least one of the lighting devices is a warm LED.

20. The lighting assembly of claim 19, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light intensity control coupled to the controller;

the light intensity control allowing a user to adjust the intensity of the light emitted by the lighting assembly by controlling the cool and the warm LEDs.

21. The lighting assembly of claim 19, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light temperature control coupled to the controller;

the light temperature control allowing a user to adjust the light temperature of the light emitted by the lighting assembly by controlling the cool and the warm LEDs.

22. The lighting assembly of claim 19, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light temperature control coupled to the controller;

the light temperature control allowing a user to adjust the light temperature of the light emitted by the lighting assembly by controlling the cool and the warm LEDs;

and the controller increasing the intensity of the cool LEDs and decreasing the intensity of the warm LEDs to provide a cooler light temperature, and the controller decreasing the intensity of the cool LEDs and increasing the intensity of the warm LEDs to provide a warmer light temperature.

23. The lighting assembly of claim 19, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light temperature control coupled to the controller;

the light temperature control allowing a user to adjust the light temperature of the light emitted by the lighting assembly by controlling the cool and the warm LEDs;

the controller increasing the intensity of the cool LEDs and decreasing the intensity of the warm LEDs to provide a cooler light temperature, and the controller decreasing the intensity of the cool LEDs and increasing the intensity of the warm LEDs to provide a warmer light temperature;

a light intensity control coupled to the controller;

the light intensity control allowing a user to adjust the intensity of the light emitted by the lighting assembly by controlling the cool and the warm LEDs independent of the light temperature control.

24. The lighting assembly of claim 1, further comprising the lighting assembly being attached to a desk lamp configuration.

25. The lighting assembly of claim 1, further comprising the lighting assembly being attached to a floor lamp configuration.

26. The lighting assembly of claim 1, further comprising the lighting assembly being attached to a suspended lamp configuration.

27. The lighting assembly of claim 1, further comprising the lighting assembly being attached to a wall mountable configuration.

28. A lamp comprising:

a base;

a body extending from the base;

an arm extending from the body;

a lighting assembly carried on the arm;

a printed circuit board having a first side and a second side;

at least one solid state lighting device attached to the first side of the circuit board;

a first heat sink positioned proximate to the first side of the circuit board;

a second heat sink positioned proximate to the second side of the circuit board and between the circuit board and the arm; and

a cover positioned over the second heat sink.

29. The lamp of claim 28, further comprising a first joint moveably connecting the body to the base.

30. The lamp of claim 29, wherein the first joint allows the body to move relative to the base in at least one axis of motion.

31. The lamp of claim 28, further comprising a second joint moveably connecting the arm to the body.

32. The lamp of claim 31, wherein the second joint allows the arm to mover relative to the body in at least one axis of motion.

33. The lamp of claim 31, wherein the body and the arm have a generally planar configuration, the body including a first twisted portion and the arm including a second twisted portion, the first and second twisted portions being cooperatively located on the corresponding portions of the body and arm, respectively to facilitate the positioning the arm in a nested configuration proximate to the body.

34. The lamp of claim 31, further comprising:

a plurality of lighting devices arranged on the circuit board;

at least one of the lighting devices is a cool LED; and

at least one of the lighting devices is a warm LED.

35. The lamp of claim 31, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light intensity control coupled to the controller;

the light intensity control allowing a user to adjust the intensity of the light emitted by the lighting assembly by controlling the cool and the warm LEDs.

36. The lamp of claim 31, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light temperature control coupled to the controller;

the light temperature control allowing a user to adjust the light temperature of the light emitted by the lighting assembly by controlling the cool and the warm LEDs.

37. The lighting assembly of claim 31, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light temperature control coupled to the controller;

the light temperature control allowing a user to adjust the light temperature of the light emitted by the lighting assembly by controlling the cool and the warm LEDs;

and the controller increasing the intensity of the cool LEDs and decreasing the intensity of the warm LEDs to provide a cooler light temperature, and the controller decreasing the intensity of the cool LEDs and increasing the intensity of the warm LEDs to provide a warmer light temperature.

38. The lighting assembly of claim 31, further comprising:

a controller coupled to the circuit board;

each of the cool and warm LEDs being coupled to the controller through the circuit board;

a light temperature control coupled to the controller;

the light temperature control allowing a user to adjust the light temperature of the light emitted by the lighting assembly by controlling the cool and the warm LEDs;

the controller increasing the intensity of the cool LEDs and decreasing the intensity of the warm LEDs to provide a cooler light temperature, and the controller decreasing the intensity of the cool LEDs and increasing the intensity of the warm LEDs to provide a warmer light temperature;

a light intensity control coupled to the controller;

the light intensity control allowing a user to adjust the intensity of the light emitted by the lighting assembly by controlling the cool and the warm LEDs independent of the light temperature control.

39. The lamp of claim 31, wherein the controller is retained in the base.

40. The lamp of claim 35, wherein the light intensity control is positioned on the base.

41. The lamp of claim 36, wherein the light temperature control is positioned on the base.