LED ILLUMINATION MODULE

• US 20100127639A1
• Filed: 11/20/2009
• Published: 05/27/2010
• Est. Priority Date: 11/24/2008
• Status: Active Grant

• Current Assignee: Jinyoung R&S Co., Ltd.
• Original Assignee: Jinyoung R&S Co., Ltd.
• Inventors: CHA, JIN GIL
• Granted Patent: US 8,167,465 B2
• Time in Patent Office: Days
• US Class Current: 315/294
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 27/02 Cable inlets
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G09F 13/22 electroluminescent electroluminescent light sources per se H05B33/00
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/30 Driver circuits
• CPC Class Codes: H05B 45/3578 Emulating the electrical or functional characteristics of discharge lamps
• CPC Class Codes: H05B 45/36 Circuits for reducing or suppressing harmonics, ripples or electromagnetic interferences [EMI]
• CPC Class Codes: H05B 45/395 Linear regulators
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

The present invention relates to an LED illumination module. The LED illumination module comprises an upper housing configured to have an accommodation unit upwardly protruding at a central portion of the upper housing and to have two or more LEDs mounted in an outer circumference direction of the accommodation unit, a lower housing disposed below the upper housing, a power supply device embedded in the accommodation unit formed in the upper housing and configured to supply a power source to the LEDs, and power source cables placed on sides of the upper housing and the lower housing and configured to supply an external power source to the power supply device.

Claims

1. A Light-Emitting Diode (LED) illumination module, comprising:

an upper housing 4 configured to have an accommodation unit 2 upwardly protruding at a central portion of the upper housing and to have two or more LEDs 3 mounted in an outer circumference direction of the accommodation unit 2, wherein the accommodation unit 2 placed in the upper housing 4 includes a circumferential face 2a having an inclined plane such that light of each of the LEDs 3 can have a divergence angle 3a;

a lower housing 5 disposed below the upper housing 4;

a power supply device 6 embedded in the accommodation unit 2 formed in the upper housing 4 and configured to supply a power source to the LEDs 3;

power source cables 7 placed on sides of the upper housing 4 and the lower housing 5 and configured to supply an external power source to the power supply device 6;

adhesive injection grooves 8 concaved in a length direction of the lower housing 5 and formed on both lower sides of the lower housing 5;

two or more shrinking prevention holes 9 perforated in a bottom face of the lower housing 5 and configured to prevent the lower housing 5 from being shrunk by heat generated from the LEDs 3 interposed between the upper housing 4 and the lower housing 5;

an upper connector 10 and a lower connector 11 configured to couple the power source cables 7 together and combined in up and down directions on each of the both sides of the upper housing 4 and the lower housing 5;

through holes 12 formed in each of top surfaces of the upper and lower connectors 10 and 11;

cable guides 13a and 13b formed in each of the upper connector 10 and the lower connector 11 on a side where the upper and lower connectors 10 and 11 come into contact with each other, wherein the cable guides 13a and 13b each are configured to have a semicircular longitudinal section in a length direction of the upper and lower connectors 10 and 11 so that when the upper and lower connectors 10 and 11 overlap each other in the up and down directions, the cable guides 13a and 13b of the upper connector 10 and the cable guides 13a and 13b of the lower connector 11 are brought into contact with each other, thus forming respective circular through holes 14 through which the power source cables 7 can pass; and

fixing screw holes 15 respectively formed on both sides of the upper and lower connectors 10 and 11 and configured to screw the LED illumination module 1.

2. The LED illumination module as claimed in claim 1, wherein the power supply device 6 comprises:

a circuit protection unit 16 configured to break overcurrent and overvoltage;

a rectifying unit 17 configured to rectify an AC power source, received from the circuit protection unit 16, into a DC power source;

a constant voltage generator 18 configured to convert the DC power source into a voltage of a certain level such that the DC power source complies with a driving voltage of the LEDs 3; and

a constant current generator 19 mounted on the constant voltage generator 18 and configured to supply the LEDs 3 with only a necessary amount of current received from the constant voltage generator 18.

3. The LED illumination module as claimed in claim 2, wherein:

the circuit protection unit 6 comprises a fuse connected in series to an AC power terminal and a Varistor connected in series or in parallel across the AC power terminal,

the rectifying unit 17 comprises a bridge diode configured to rectify the AC power source received from the AC power terminal, and a capacitor connected in parallel to the output terminal of the bridge diode and configured to remove a ripple voltage generated from the bridge diode, and

the constant voltage generator 18 and the constant current generator 19 are constructed by connecting a constant voltage IC and a constant current IC, respectively, to the output terminal of the rectifying unit 17 from which the ripple voltage has been removed.