Light emitting diode illuminating device

• US 7,842,965 B2
• Filed: 06/09/2008
• Issued: 11/30/2010
• Est. Priority Date: 12/29/2007
• Status: Expired due to Fees

• Current Assignee: Foxsemicon Integrated Technology Incorporated
• Original Assignee: Foxsemicon Integrated Technology Incorporated
• Inventors: Hsu, Hung-Kuang, WANG, CHUN-WEI
• Primary Examiner(s): TON, ANABEL
• Application Number:
  US12/135,871
• Publication Number:
  US 20090168430A1
• Time in Patent Office: 904 Days
• Field of Search: 362/800, 362/646, 362/652, 362/640, 257/98, 257/415, 361/730, 361/732, 361/740
• US Class Current: 257/99
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 6/00 Lighting devices intended to be free-standing F21S9/00, F21S10/00, F21S13/12 take precedence lighting devices specially adapted to be transported from place to place, e.g. lighting devices carried on wheeled supports F21L; details of supports for lighting devices F21V21/00
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• 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 33/64 Heat extraction or cooling elements
• CPC Class Codes: H01R 12/714 with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
• CPC Class Codes: H01R 13/7175 Light emitting diodes (LEDs)
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

An illuminating device (1) includes a light source module (10) and a power source module (30). The light source module includes a base (11), a plurality of LEDs (12) and a plurality of electrode contacts (13, 14) located on the base. The LEDs is electrically connected to the electrode contacts. The power source module includes an enclosure (31) defining a light source chamber (311) therein and a plurality of electrical terminals (33, 34) received in the light source chamber. The light source module is detachably inserted into the light source chamber of the power source module, and the electrode contacts abut against the corresponding electrical terminals respectively.

Claims

1. An LED illuminating device comprising:

a light source module comprising a circuit board, an LED and a plurality of electrode contacts located on the circuit board, the LED electrically connected with the electrode contacts;

a power source module comprising an enclosure defining a light source chamber therein and a plurality of electrical terminals received in the light source chamber, the light source module being detachably inserted into the light source chamber of the power source module, the electrode contacts abutting against the corresponding electrical terminals respectively;

wherein the circuit board of the light source module is rectangular and defines a cutout at a corner thereof, and the power source module has a protrusion protruding into the light source chamber, the protrusion being engaged in the cutout, the engagement between the protrusion and the cutout ensuring that the light source module is properly and accurately mounted to the power source module.

2. The LED illuminating device as claimed in claim 1, wherein a heat dissipating block is disposed below the light source chamber of the enclosure, and the heat dissipating block is in thermally contact with the circuit board of the light source module.

3. The LED illuminating device as claimed in claim 2, wherein the heat dissipating block is integrally formed with the enclosure as a single piece.

4. The LED illuminating device as claimed in claim 2, wherein a thermal tape is sandwiched between the circuit board of the light source module and the heat dissipating block.

5. The LED illuminating device as claimed in claim 1, wherein the light source chamber of the power source module forms a fixing unit, and the fixing unit defines a groove therein, the circuit board of the light source module forming an elastic hook corresponding to the groove, the elastic hook being locked in the groove.

6. An LED illuminating device comprising:

a housing defining a cavity therein and an opening in communication with the cavity, the housing having a light permeable portion at a first side of the cavity, and a heat dissipating block at an opposite second side of the cavity;

a plurality of power source terminals disposed in the cavity for electrical connection to a power source;

a circuit board having a plurality of electrical contacts; and

an LED mounted on the circuit board, the LED electrically connected to the electrical contacts;

wherein the circuit board is removably inserted in the cavity via the opening, the LED facing the light permeable portion, an opposite side of the circuit board to the LED in thermally contact with the heat dissipating block, the circuit board being rectangular and defining a cutout at a corner thereof, and the housing having a protrusion protruding into the cavity, the protrusion being engaged in the cutout, the engagement between the protrusion and the cutout ensuring that the electrical contacts of the circuit board are properly and accurately engaged with the power source terminals.

7. The LED illuminating device as claimed in claim 6, wherein the heat dissipating block is integrally formed with the housing as a single piece.

8. The LED illuminating device as claimed in claim 6, wherein a thermal tape is sandwiched between the circuit board and the heat dissipating block.

9. The LED illuminating device as claimed in claim 6, wherein a fixing unit is formed in the cavity of the housing and defines a groove therein, the circuit board forming an elastic hook corresponding to the groove, the elastic hook being locked in the groove.

10. A lamp comprising:

a base;

a supporting pole extending from the base;

an LED illuminating device mounted on the supporting pole, the LED illuminating device comprising;

a light source module comprising a circuit board, an LED, and a plurality of electrode contacts located on the circuit board, the LED electrically connected with the electrode contacts; and

a power source module comprising an enclosure defining a light source chamber therein and a plurality of electrical terminals received in the light source chamber, the light source module being detachably inserted into the light source chamber of the power source module, the electrode contacts abutting against the corresponding electrical terminals respectively;

wherein the circuit board of the light source module is rectangular and defines a cutout, at a corner thereof, and the power source module has a protrusion protruding into the light source chamber, the protrusion being engaged in the cutout, the engagement between the protrusion and the cutout ensuring that the light source module is properly and accurately mounted to the power source module.

11. The lamp as claimed in claim 10, wherein a heat dissipating block is disposed below the light source chamber of the enclosure, and the heat dissipating block is in thermally contact with the circuit board of the light source module.

12. The lamp as claimed in claim 11, wherein the heat dissipating block is integrally formed with the enclosure as a single piece.

13. The lamp as claimed in claim 11, wherein a thermal tape is sandwiched between the circuit board of the light source module and the heat dissipating block.

14. The lamp as claimed in claim 10, wherein the light source chamber of the power source module forms a fixing unit, and the fixing unit defines a groove therein, the circuit board of the light source module forming an elastic hook corresponding to the groove, the elastic hook being locked in the groove.