Filament for automobile illumination and LED lamp comprising same

Abstract

The utility model provides a lamp filament used for automobile illumination and an LED lamp comprising the same, and the lamp filament used for automobile illumination comprises a sapphire substrate and a plurality of chip assemblies which are sequentially arranged at the bottom of the sapphire substrate along the width direction of the sapphire substrate at intervals. The chip assembly comprises a first arrangement group arranged in the length direction of the sapphire substrate and a second arrangement group arranged corresponding to the first arrangement group, the first arrangement group comprises a plurality of LED chips arranged in series in the first direction, and the second arrangement group comprises a plurality of LED chips arranged in series in the second direction. The pin assembly comprises connecting pins and bending pins, wherein the connecting pins are connected to the two ends of the sapphire substrate in the length direction respectively, the bending pins are connected to the ends, away from the sapphire substrate, of the connecting pins, and the bending pins and the connecting pins are arranged in an angle mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of LED, especially to a filament for automobile lighting and a LED lamp containing the filament. BACKGROUND

[0002] With the development of electric vehicles and self-driving vehicles, the importance of lighting is also growing, and the evolution of vehicle lamps is like the trajectory of technological progress. LED filaments, as the fourth generation of lighting sources, have become the preferred choice for the next generation of automotive light source technology due to their small size, long life, low energy consumption, and fast start-up time. Structurally, LED filaments are composed of a block of electroluminescent semiconductor material chip, which is fixed on a bracket with white glue, then connected to the circuit board with gold wire, finally sealed and protected with epoxy resin, and installed with a shell. This design makes LED reading lamps and wide-range lamps have excellent shock resistance, making them very suitable for use on vehicles.

[0003] In the prior art, existing automobile wide-range lamps and reading lamps usually use halogen lamps with a power of about 5-21W. However, due to the much higher light efficiency of LED filaments than halogen lamps, the power of LED filaments is much smaller to achieve the same lighting effect, making the burden on the vehicle power source smaller. In addition, some existing automobile brand wide-range lamps, reading lamps, and headlamps have adopted LED lamps. The structure is usually multiple EMC3030 or 3535 similar size beads pasted on two or even six surfaces of an aluminum sapphire substrate. However, the multi-pasting process is relatively complex, leading to high cost. The beads pasted on the aluminum substrate result in large light efficiency loss and poor light distribution, making it impossible to achieve complete 360-degree lighting. At the same time, it can only be used in a direct current environment, and the entire volume is relatively large. The beads are not sealed and protected by a bubble shell. The filament for automobile lighting is in a harsh environment, leading to large light decay or even failure over a long period of time. SUMMARY

[0004] Therefore, the utility model aims to provide a filament for automobile lighting and a LED lamp containing the filament, which can effectively solve the above-mentioned deficiencies in the prior art.

[0005] A filament for automobile lighting, comprising a sapphire substrate and a plurality of chip assemblies arranged along the width direction of the sapphire substrate at intervals, the chip assemblies comprising a first arrangement group arranged along the length direction of the sapphire substrate and a second arrangement group arranged correspondingly to the first arrangement group, the first arrangement group comprising a plurality of LED chips arranged in series along a first direction, the second arrangement group comprising a plurality of LED chips arranged in series along a second direction, the pin assembly comprising a connecting pin connected to the two ends of the sapphire substrate in the length direction and a bent pin connected to the end of the connecting pin away from the sapphire substrate, the bent pin being arranged at an angle to the connecting pin.

[0006] Compared with the prior art, the filament has the following beneficial effects: firstly, the plurality of LED chips arranged in series are arranged as the first arrangement group along the first direction, and the plurality of LED chips arranged in series are arranged as the second arrangement group along the second direction, thereby replacing the traditional halogen lamp with the LED chips, significantly improving the light efficiency, reducing the power demand under the same lighting effect, reducing the load of the vehicle power supply, and prolonging the service life of the storage battery; secondly, the design of integrating the chip assemblies on the sapphire substrate avoids the complex process of the multi-face patch lamp beads in the prior art, reduces the production steps and material costs, and reduces the yield loss caused by multiple patching; at the same time, the LED chips are not blocked by the aluminum substrate, the light loss is small, more uniform light distribution is achieved, and 360° full-angle light emission is achieved; and the plurality of LED chips arranged in series are arranged as the first arrangement group along the first direction, and the plurality of LED chips arranged in series are arranged as the second arrangement group along the second direction, so that the LED chips are divided into two directions and evenly arranged on the sapphire substrate, which can simultaneously satisfy the low-voltage direct-current and alternating-current power supply output on the automobile.

[0007] Further, a fluorescent glue is arranged on the sapphire substrate, and the fluorescent glue wraps the sapphire substrate, the chip assemblies, and part of the connecting pins connected to the sapphire substrate.

[0008] Further, the included angle between the bent pin and the connecting pin is 60°-150°.

[0009] On the other hand, the utility model also proposes a LED lamp, including bubble shell structure and being located in the bubble shell structure above the filament for automobile lighting described above.

[0010] Further, a lens structure is arranged on the top of the bubble shell structure, and a reflecting cup structure is arranged in the bubble shell structure, the sapphire substrate is arranged between the lens structure and the reflecting cup structure, and the end of the bent pin away from the connecting pin penetrates the reflecting cup structure.

[0011] Further, an electric resistance structure is connected to one end of the bent pin penetrating through the reflecting cup structure.

[0012] Further, a U-shaped pin is connected to the end of the electric resistance structure away from the bent pin, and the end of the U-shaped pin away from the electric resistance structure penetrates through the bulb structure.

[0013] Further, a fixing member is arranged at the bottom of the bulb structure. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a cross-sectional view of the filament for automobile lighting in the embodiment 1 of the present application;

[0015] Figure 2 is a bottom view of the filament for automobile lighting in the embodiment 1 of the present application;

[0016] Figure 3 is a cross-sectional view of the LED lamp in the embodiment 2 of the present application;

[0017] MAIN ELEMENT SYMBOL EXPLANATION

[0018]

[0019] The following detailed description will further describe the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The drawings show several embodiments of the present application. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0023] Embodiment 1

[0024] Referring to Figures 1-2 The embodiment 1 of the utility model provides a filament for automobile lighting, including sapphire substrate 10 and a plurality of chip components 20 that are sequentially and spaced apart along the width direction of sapphire substrate 10 at the bottom of sapphire substrate 10, chip component 20 includes first arrangement group 21 that is arranged along the length direction of sapphire substrate 10 and second arrangement group 22 that is correspondingly arranged with first arrangement group 21, first arrangement group 21 includes a plurality of LED chips 23 that are connected in series along the first direction, second arrangement group 22 includes a plurality of LED chips 23 that are connected in series along the second direction, pin component 30 includes connecting pin 31 that is connected at the both ends of the length direction of sapphire substrate 10 respectively and bending pin 32 that is connected at the end of connecting pin 31 away from sapphire substrate 10, bending pin 32 is arranged at an angle with connecting pin 31.

[0025] Need to explain, in the embodiment, two chip components 20 are sequentially and spaced apart along the width direction of sapphire substrate 10 at the bottom of sapphire substrate 10, first arrangement group 21 includes three LED chips 23 that are connected in series along the first direction, second arrangement group 22 includes three LED chips 23 that are connected in series along the second direction, wherein the first direction is opposite to the second direction.

[0026] It can be understood that first, by arranging three LED chips 23 connected in series along the first direction as first arrangement group 21, by arranging three LED chips 23 connected in series along the second direction as second arrangement group 22, and then by replacing the traditional halogen lamp with LED chip 23, the light efficiency is significantly improved, the power demand is reduced under the same lighting effect, the vehicle power supply load is reduced, and the battery life is prolonged; second, by integrating the design of chip component 20 on sapphire substrate 10, the complex process of multi-surface patch lamp beads in the prior art is avoided, the production steps and material costs are reduced, and the yield loss caused by multiple patching is reduced; at the same time, LED chip 23 is not blocked by aluminum substrate, light loss is small, more uniform light distribution is realized, and 360° full-angle light emission is realized; and three LED chips 23 connected in series are arranged along the first direction as first arrangement group 21, and three LED chips 23 connected in series are arranged along the second direction as second arrangement group 22, so that LED chip 23 is divided into two opposite directions, and is evenly arranged on sapphire substrate 10, which can simultaneously satisfy low-voltage direct current and alternating current power output on the automobile.

[0027] Further, a fluorescent glue 40 is arranged on the sapphire substrate 10, and the fluorescent glue 40 wraps the sapphire substrate 10, the chip assembly 20 and the connecting pins connected to the sapphire substrate 10.

[0028] Further, the included angle between the bending pin 32 and the connecting pin 31 is 60°-150°.

[0029] In the embodiment, the included angle between the bending pin 32 and the connecting pin 31 is 90°.

[0030] It can be understood that by setting the included angle between the bending pin 32 and the connecting pin 31 to 90°, subsequent welding can be facilitated.

[0031] Embodiment 2

[0032] Please refer to Figure 3 The embodiment 2 of the utility model provides a LED lamp, including bubble shell structure 50 and being located in the bubble shell structure 50 above-mentioned filament for automobile lighting of lamp.

[0033] It can be understood that by setting the bubble shell structure 50, the filament for automobile lighting can be protected by the bubble shell structure 50, and the filament for automobile lighting is prevented from being in a harsh environment for a long time to cause large light decay or even failure.

[0034] Further, a lens structure 60 is arranged on the top of the bubble shell structure 50, a reflecting cup structure 70 is arranged in the bubble shell structure 50, the sapphire substrate 10 is arranged between the lens structure 60 and the reflecting cup structure 70, and one end of the bending pin 32 away from the connecting pin 31 penetrates the reflecting cup structure 70.

[0035] It can be understood that by arranging the lens structure 60 on the top of the bubble shell structure 50, the light distribution effect can be enhanced, and by arranging the reflecting cup structure 70, the range and intensity of illumination can be enhanced.

[0036] Further, a resistance structure 80 is connected to one end of the bending pin 32 penetrating the reflecting cup structure 70.

[0037] It can be understood that by arranging the resistance structure 80, the current can be limited and the voltage can be stabilized.

[0038] Further, a U-shaped pin 90 is connected to one end of the resistance structure 80 away from the bending pin 32, and one end of the U-shaped pin 90 away from the resistance structure 80 penetrates the bubble shell structure 50.

[0039] It can be understood that the filament for automobile lighting can be connected with an external power supply through the U-shaped pin 90 by arranging the U-shaped pin 90.

[0040] Further, the fixing member 100 is arranged at the bottom of the bubble shell structure 50.

[0041] It can be understood that the bubble shell structure 50 can be installed on the automobile through the fixing member 100 by arranging the fixing member 100.

[0042] In summary, the filament for automobile lighting and the LED lamp containing the filament in the above embodiments of the present application first arrange a plurality of LED chips arranged in series along a first direction as a first arrangement group, arrange a plurality of LED chips arranged in series along a second direction as a second arrangement group, and then replace the traditional halogen lamp with the LED chip to significantly improve the light efficiency, reduce the power demand under the same lighting effect, reduce the vehicle power supply load, and prolong the service life of the storage battery. Secondly, the design of integrating the chip assembly on the sapphire substrate avoids the complex process of the multi-face patch lamp bead in the prior art, reduces the production steps and material cost, and reduces the yield loss caused by multiple patching. At the same time, the LED chip is not blocked by the aluminum substrate, the light loss is small, the light distribution is more uniform, and 360° full-angle light emission is realized. The plurality of LED chips arranged in series along the first direction are arranged as the first arrangement group, and the plurality of LED chips arranged in series along the second direction are arranged as the second arrangement group, so that the LED chips are divided into two directions and uniformly arranged on the sapphire substrate, which can simultaneously satisfy the low-voltage direct current and alternating current power supply output on the automobile.

[0043] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A filament for automotive lighting, characterized in that, The device includes a sapphire substrate, a pin assembly, and a plurality of chip assemblies arranged at intervals along the width direction of the sapphire substrate at the bottom of the sapphire substrate. The chip assembly includes a first arrangement group arranged along the length direction of the sapphire substrate and a second arrangement group arranged corresponding to the first arrangement group. The first arrangement group includes a plurality of LED chips arranged in series along a first direction, and the second arrangement group includes a plurality of LED chips arranged in series along a second direction. The pin assembly includes connecting pins respectively connected to both ends of the sapphire substrate along the length direction and a bent pin connected to the end of the connecting pin away from the sapphire substrate. The bent pin is arranged at an angle to the connecting pin.

2. The filament for automotive lighting according to claim 1, characterized in that, A phosphor is also disposed on the sapphire substrate, which encapsulates the sapphire substrate, the chip assembly, and some connection pins connected to the sapphire substrate.

3. The filament for automotive lighting according to claim 1, characterized in that, The angle between the bent pin and the connecting pin is 60°-150°.

4. An LED light, characterized in that, Includes a bulb structure and a filament for automotive lighting as described in any one of claims 1-3 disposed within the bulb structure.

5. The LED lamp according to claim 4, characterized in that, A lens structure is provided on the top of the bubble shell structure, and a reflective cup structure is provided inside the bubble shell structure. The sapphire substrate is disposed between the lens structure and the reflective cup structure, and the end of the bent pin away from the connecting pin passes through the reflective cup structure.

6. The LED lamp according to claim 5, characterized in that, A resistor is connected to one end of the bent pin that passes through the reflector cup structure.

7. The LED lamp according to claim 6, characterized in that, A U-shaped pin is connected to the end of the resistor structure away from the bent pin, and the end of the U-shaped pin away from the resistor structure passes through the bubble shell structure.

8. The LED lamp according to claim 4, characterized in that, A fixing element is provided at the bottom of the bubble structure.

Images