CN-224218766-U - LED filament lamp and display device

Abstract

The utility model provides an LED filament lamp and display equipment, the LED filament lamp comprises a sapphire substrate, a plurality of LED chips and a transparent protective cover, the LED chips are uniformly distributed on the sapphire substrate in a matrix mode, the connection directions of the adjacent LED chips are opposite, the sapphire substrate and the LED chips are combined to form an LED filament, silica gel layers are covered on a plurality of side walls of the sapphire substrate, the silica gel layers wrap the LED chips, an accommodating space is formed in the transparent protective cover, the LED filament is located in the accommodating space, a plurality of radiating holes are formed in the transparent protective cover and are communicated with the accommodating space, and the LED filament lamp can be used in a low-voltage direct-current environment and an alternating-current environment on an automobile and is beneficial to improving the problem that the LED filament lamp has larger light attenuation when being used for a long time in a severe environment.

Inventors

• LI ZHENHUA
• GUO YANYAN
• LI YIYUAN
• ZHANG LUHUA

Assignees

• 江西斯迈得半导体有限公司

Dates

Publication Date

20260508

Application Date

20250424

Claims (8)

1. 1. The LED filament lamp is characterized by comprising a sapphire substrate, a plurality of LED chips and a transparent protective cover, wherein the LED chips are uniformly distributed on the sapphire substrate in a matrix form, the connection directions of the adjacent LED chips are opposite, the sapphire substrate and the LED chips are combined to form an LED filament, the LED filament is connected with a power supply through a metal pin, the metal pin is bent to form an inverted L-shaped structure, a plurality of side walls of the sapphire substrate are covered with silica gel layers, and the silica gel layers wrap the LED chips; The LED lamp comprises a transparent protective cover, wherein an accommodating space is formed in the transparent protective cover, an LED lamp filament is located in the accommodating space, a plurality of radiating holes are formed in the transparent protective cover, and the radiating holes are communicated with the accommodating space.
2. 2. The LED filament lamp of claim 1, wherein the transparent protective cover comprises a bulb, a lens and a reflective cup, the plurality of heat dissipation holes are formed in the bulb, the lens is formed in the top of the bulb, the reflective cup is located in the middle of the bulb, and the reflective cup is located below the LED filament.
3. 3. The LED filament lamp of claim 2, wherein the lens is a biconvex lens.
4. 4. The LED filament lamp of claim 2, wherein a film layer is provided on the bulb shell, the film layer covering the opening of the heat dissipation hole.
5. 5. The LED filament lamp of claim 1, wherein the thickness of the silicone layer on each side wall of the sapphire substrate is the same, and the thickness of the silicone layer is 0.95mm ± 0.3mm.
6. 6. The LED filament lamp of claim 1, wherein a support metal terminal is provided on the sapphire substrate, the LED chip is connected to the support metal terminal through a gold wire, and the support metal terminal is connected to the metal pin.
7. 7. The LED filament lamp of claim 1, wherein the LED chip is connected to the sapphire substrate by white glue.
8. 8. A display device comprising the LED filament lamp of any one of claims 1-7.

Description

LED filament lamp and display device Technical Field The utility model relates to the technical field of automobile illumination, in particular to an LED filament lamp and display equipment. Background Electric and automatic driving automobiles are continuously developed, the importance of illumination is also increased, and in general, an automobile width indicator lamp and a reading lamp are usually halogen lamps, and the power is approximately in the range of 5-21W. Since the light efficiency of the LED filament is far higher than that of a halogen lamp, the power of the LED filament is much smaller and the burden on the vehicle power supply is also smaller to achieve the same lighting effect. Therefore, the LED filament is used as a fourth-generation illumination light source, and has the advantages of small volume, long service life, low energy consumption and quick starting time, so that the LED filament becomes the first choice of the new-generation automobile light source technology. At present, the market is partial high-end brands, some electric automobile brands show width lamps and reading lamps, and the headlight has all adopted the LED lamp, and the LED lamp on the electric automobile generally can only use under direct current environment, and the structure leads to a plurality of EMC3030 or 3535 similar size lamp pearls to paste on two or even six faces of aluminium base board, and whole volume is bigger, does not have the bulb and seals the protection, is in the adverse circumstances and uses for a long time, and the lamp pearl can produce great light decay even inefficacy. Disclosure of utility model Based on the above, the utility model aims to provide an LED filament lamp and a display device, which are used for solving the defects in the prior art. In order to achieve the above purpose, the utility model provides an LED filament lamp, which comprises a sapphire substrate, a plurality of LED chips and a transparent protective cover, wherein the LED chips are uniformly distributed on the sapphire substrate in a matrix form, the connection directions of the adjacent LED chips are opposite, the sapphire substrate and the LED chips are combined to form an LED filament, the LED filament is connected with a power supply through a metal pin, the metal pin is bent to form an inverted L-shaped structure, a plurality of side walls of the sapphire substrate are covered with silica gel layers, and the silica gel layers wrap the LED chips; The LED lamp comprises a transparent protective cover, wherein an accommodating space is formed in the transparent protective cover, an LED lamp filament is located in the accommodating space, a plurality of radiating holes are formed in the transparent protective cover, and the radiating holes are communicated with the accommodating space. The LED filament lamp has the advantages that the LED chips are uniformly distributed on the sapphire substrate in a matrix mode, the connection directions of the adjacent LED chips are opposite, the LED chips are connected with a power supply through the metal pins, the four sides of the sapphire substrate are coated with the silica gel layer in a dispensing mode, the silica gel layer comprises the LED chips, the LED filaments formed by combining the sapphire substrate and the LED chips are arranged in the transparent protective cover, and the transparent protective cover is provided with the heat dissipation holes, so that the heat dissipation capacity is improved, the LED filament lamp can be used in a low-voltage direct-current environment on an automobile and an alternating-current environment, and meanwhile, the problem that the light attenuation of the LED filament lamp is large when the LED filament lamp is used for a long time in a severe environment is solved. Preferably, the transparent protective cover comprises a bulb shell, a lens and a reflecting cup, wherein a plurality of radiating holes are formed in the bulb shell, the lens is arranged at the top of the bulb shell, the reflecting cup is positioned in the middle of the bulb shell, and the reflecting cup is positioned below the LED filament. Preferably, the lens is a biconvex lens. Preferably, a film layer is arranged on the bulb shell, and the film layer covers the opening of the heat dissipation hole. Preferably, the thickness of the silica gel layer on each side wall of the sapphire substrate is the same, and the thickness of the silica gel layer is 0.95mm plus or minus 0.3mm. Preferably, a support metal terminal is arranged on the sapphire substrate, the LED chip is connected with the support metal terminal through a gold wire, and the support metal terminal is connected with the metal pin. Preferably, the LED chip is connected with the sapphire substrate through white glue. In order to achieve the above purpose, the utility model also provides a display device, which comprises the LED filament lamp. Additional aspects and advantages of the utility model wil