Light-emitting device with a long lifespan

a technology of light-emitting devices and long-lasting life, which is applied in the direction of semiconductor devices for light sources, discharge tube main electrodes, lighting and heating apparatus, etc., can solve the problems of large amount of heat and rapid brightness degradation

Inactive Publication Date: 2010-06-03
SHEN YU NUNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A conventional light-emitting device generates a large amount of heat, which causes rapid deterioration in the brightness thereof.

Method used

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  • Light-emitting device with a long lifespan
  • Light-emitting device with a long lifespan
  • Light-emitting device with a long lifespan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040]Before the present invention is described in greater detail, it should be noted that like elements are denoted by the same reference numerals throughout the disclosure.

[0041]Referring to FIG. 1, the first preferred embodiment of a light-emitting device 100 according to this invention is shown to include a housing 1, a light-emitting unit 31, a cup-shaped reflector 2, and a pair of leads 32.

[0042]The housing 1 includes complementary first and second housing parts 11, 12 that cooperatively define an accommodating space 10 therebetween. In this embodiment, the housing 1 is generally spherical in shape, as illustrated in FIG. 2.

[0043]The light-emitting device 100 further includes a mounting unit 3 that is disposed in the accommodating space 10 in the housing 1, and that includes a light-transmissible substrate 30, a pair of electrical contacts 301, and a pair of conductive wires 33. The light-transmissible substrate 30 has opposite first and second mounting surfaces 300, 302. Each...

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Abstract

A light-emitting device includes a housing, a light-emitting unit, a cup-shaped reflector, and a plurality of leads. The light-emitting unit is disposed in the housing. The cup-shaped reflector is disposed in the housing, and includes a base wall that is formed with a plurality of holes therethrough, and a surrounding wall that diverges from the base wall thereof and that surrounds the light-emitting unit. Each of the leads extends into the housing and is coupled electrically to the light-emitting unit.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)[0001]This application is a divisional application of U.S. patent application Ser. No. 11 / 932,687, filed Oct. 31, 2007, now U.S. Publication No. 2008 / 0158856 A1, published Jul. 3, 2008, entitled LIGHT-EMITTING DEVICE WITH A LONG LIFESPAN, which claims priority to and the benefit of Taiwanese Application No. 095150104, filed on Dec. 28, 2006. The entire content of each of the above-referenced applications is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates to a light-emitting device, more particularly to a light-emitting device capable of efficiently dissipating heat generated thereby.[0004]2. Description of the Related Art[0005]A conventional light-emitting device generates a large amount of heat, which causes rapid deterioration in the brightness thereof.SUMMARY OF THE INVENTION[0006]Therefore, the object of the present invention is to provide a light-emitting device that...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H01J61/52
CPCF21V7/0008F21V7/005F21V29/004F21V31/04F21Y2101/02H01L25/0753H01L33/483H01L33/648F21V29/006Y10S362/80F21V29/717F21V29/77F21V29/777F21V29/83H01L2224/48091H01L2224/48227F21V9/08F21K9/17F21V3/0481F21V23/06F21K9/13F21K9/135H01L2924/00F21K9/23F21K9/232F21Y2109/00F21Y2115/10F21K9/64F21K9/275F21K9/68F21V3/12F21V29/767H01L2924/00014
InventorSHEN, YU-NUNG
OwnerSHEN YU NUNG