CN-224218773-U - Gold yellow light emitting device

Abstract

The application belongs to the technical field of lighting devices, and particularly provides a golden yellow light emitting device which comprises a blue light emitting unit, a red light emitting unit and fluorescent glue, wherein the blue light emitting unit and the red light emitting unit are covered by the fluorescent glue, and yellow fluorescent powder and/or red fluorescent powder are arranged in the fluorescent glue. Blue light emitted by the blue light emitting unit can excite yellow fluorescent powder in the fluorescent glue to generate yellow light, and the yellow light is mixed with red light emitted by the red light emitting unit to obtain golden yellow light with the color temperature of 1700K-2500K, so that compared with a traditional white light LED lamp, the blue light component and the color temperature can be effectively reduced, the penetrating power of light under severe weather conditions such as rain, fog, dust and the like and the road surface reflection efficiency are improved, the fluorescent glue is particularly suitable for municipal lighting such as urban road lighting and tunnel lighting, road pedestrians and obstacles can be more easily seen by a driver, and the driving safety coefficient is improved.

Inventors

• LI ZHAO
• CHEN LEI
• HUANG JIAO
• LIN JINTIAN

Assignees

• 旭宇光电（深圳）股份有限公司

Dates

Publication Date

20260508

Application Date

20250411

Claims (10)

1. 1. The golden yellow light emitting device is characterized by comprising a blue light emitting unit, a red light emitting unit and fluorescent glue, wherein the blue light emitting unit and the red light emitting unit are covered by the fluorescent glue, yellow fluorescent powder is arranged in the fluorescent glue, and the blue light emitting unit, the red light emitting unit and the fluorescent glue are matched to emit golden yellow light with the color temperature of 1700K-2500K.
2. 2. The golden yellow light-emitting device of claim 1, wherein the fluorescent glue further comprises red fluorescent powder.
3. 3. The golden yellow light-emitting device according to claim 1, wherein the emission wavelength of the blue light-emitting unit is 450nm-455nm, the emission wavelength of the red light-emitting unit is 620nm-625nm, the peak intensity ratio of the blue light-emitting unit to the red light-emitting unit in the relative spectrum at the time of light emission is 1 to 3, and the emission peak wavelength of the yellow fluorescent powder is 560nm-570nm.
4. 4. The golden yellow light-emitting device of claim 3, wherein the fluorescent glue is further provided with red fluorescent powder, the emission peak wavelength of the red fluorescent powder is 620nm-630nm, and the mass ratio of the yellow fluorescent powder to the red fluorescent powder is greater than or equal to 10.
5. 5. The golden yellow light-emitting device of claim 1, further comprising a bracket, wherein the bracket is provided with a bowl, the blue light-emitting unit and the red light-emitting unit are both arranged in the bowl, and the fluorescent glue is filled in the bowl.
6. 6. The golden yellow light-emitting device of claim 5 wherein the number of red light-emitting units is plural and plural of the red light-emitting units are arranged around the blue light-emitting unit.
7. 7. The golden yellow light-emitting device of claim 5, wherein the fluorescent glue comprises a bottom layer and a surface layer, the bottom layer covers the blue light-emitting units and the red light-emitting units, the yellow fluorescent powder is arranged in the bottom layer, the surface layer covers one side of the bottom layer, which is opposite to the blue light-emitting units and the red light-emitting units, and the red fluorescent powder is arranged in the surface layer.
8. 8. The golden yellow light-emitting device of claim 7, wherein the bottom layer has a thickness greater than the thickness of the surface layer.
9. 9. The golden light-emitting device of claim 5 wherein the mount is a PCT mount, EMC mount or ceramic mount.
10. 10. The golden yellow light-emitting device of any one of claims 1-9, wherein the blue light-emitting unit and the red light-emitting unit are LED light-emitting chips.

Description

Gold yellow light emitting device Technical Field The application belongs to the technical field of lighting devices, and particularly relates to a golden yellow light emitting device. Background The white light LED lamp is widely applied to urban road illumination and tunnel portal reinforcing section illumination by virtue of the advantages of low cost, energy conservation and environmental protection, and generally generates white light with high color temperature through the cooperation of a blue light LED chip and fluorescent powder, however, the blue light component in the white light is too high, the blue light wavelength is short and high in energy, blue light hazard is easy to cause, and the effective illumination distance is shortened due to weak penetrability under severe weather conditions such as rain, fog and dust. Disclosure of utility model The application aims to provide a golden yellow light-emitting device, which aims to solve the technical problems of high blue light component, weak penetrating power and low road surface reflection efficiency of a white light LED lamp in the prior art. The technical scheme is that the golden yellow light emitting device comprises a blue light emitting unit, a red light emitting unit and fluorescent glue, wherein the blue light emitting unit and the red light emitting unit are covered by the fluorescent glue, yellow fluorescent powder is arranged in the fluorescent glue, and the blue light emitting unit, the red light emitting unit and the fluorescent glue are matched to emit golden yellow light with the color temperature of 1700K-2500K. Further, the fluorescent glue is also provided with red fluorescent powder. Further, the emission wavelength of the blue light emitting unit is 450-455 nm, the emission wavelength of the red light emitting unit is 620-625 nm, the peak intensity ratio of the blue light emitting unit and the red light emitting unit in the relative spectrum when emitting light is 1-3, and the emission peak wavelength of the yellow fluorescent powder is 560-570 nm. Further, the fluorescent glue is also provided with red fluorescent powder, the emission peak wavelength of the red fluorescent powder is 620nm-630nm, and the mass ratio of the yellow fluorescent powder to the red fluorescent powder is more than or equal to 10. Further, the golden yellow light-emitting device further comprises a support, the support is provided with a bowl cup, the blue light-emitting unit and the red light-emitting unit are arranged in the bowl cup, and fluorescent glue is filled in the bowl cup. Further, the number of the red light emitting units is plural, and the plural red light emitting units are arranged around the blue light emitting unit. Further, the fluorescent glue comprises a bottom layer and a surface layer, wherein the bottom layer covers the blue light emitting unit and the red light emitting unit, yellow fluorescent powder is arranged in the bottom layer, the surface layer covers one side of the bottom layer, which is opposite to the blue light emitting unit and the red light emitting unit, and red fluorescent powder is arranged in the surface layer. Further, the thickness of the bottom layer is greater than the thickness of the surface layer. Further, the bracket is a PCT bracket, an EMC bracket or a ceramic bracket. Further, the blue light emitting unit and the red light emitting unit are both LED light emitting chips. Compared with the traditional white light LED lamp, the golden yellow light luminous device has the advantages that the blue light emitted by the blue light luminous unit can excite the yellow fluorescent powder in the fluorescent glue to generate yellow light, the yellow light is mixed with the red light emitted by the red light luminous unit to obtain golden yellow light with the color temperature of 1700K-2500K, compared with the traditional white light LED lamp, the golden yellow light luminous device can effectively reduce blue light components and the color temperature, improves the penetrating power of light under severe weather conditions such as rain, fog and dust and improves the road reflection efficiency, is particularly suitable for municipal lighting such as urban road lighting and tunnel lighting, can enable drivers to see pedestrians and obstacles on the road more easily, and improves the driving safety coefficient. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a cross-sectional view of a golden yellow light emitting device according to an embodiment of the present application. Whe