Separating type self-adaptive automobile tail lamp and automobile lamp lightening system thereof

Abstract

The separating type self-adaptive automobile tail lamp comprises an outer tail lamp assembly and an inner tail lamp assembly, the outer tail lamp assembly comprises an outer tail lamp holder support, an inner tail lamp holder support, an inner tail lamp holder support and a lamp holder, and the outer tail lamp holder support is installed on an automobile tail column; the outer tail lamp decorative shell is fixed in the outer tail lamp holder bracket through a screw; the upper position lamp and the lower steering lamp are installed in the outer tail lamp decoration shell, and the upper position lamp is in a transverse Y shape; the outer tail lamp lampshade is welded to the outer tail lamp holder support in a hot melting mode; the inner tail lamp assembly comprises an inner tail lamp holder support which is installed on an automobile tail door. The inner tail lamp decorative shell is fixed in the inner tail lamp holder bracket through a screw; the upper brake lamp, the middle position lamp and the lower brake lamp are installed in the inner tail lamp decoration shell, and the middle position lamp faces the upward position lamp; the inner tail lamp lampshade is welded to the inner tail lamp holder support in a hot melting mode. According to the tail lamp assembly, the outer tail lamp assembly and the inner tail lamp assembly are matched to form the tail lamp assembly, all lamp areas are reasonably arranged, the situation that light distribution is affected by space congestion is avoided, meanwhile, LED light rays are further homogenized through the LED light source driving circuit and the dimming circuit, light distribution is excellent, and adaptability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle lamps, and in particular relates to a separate adaptive vehicle tail lamp and a vehicle lamp lighting system thereof. Background Art

[0002] The lighting and signal lights of a car are crucial to the safety of driving, and are also important elements of the car's appearance. The taillights are the light source at the rear of the car, generally composed of turn signals, width lights, brake lights, etc. LEDs are mostly used as light sources in taillights. The light generated by LEDs is concentrated in a very small volume, similar to a point light source. A light guide plate is arranged outside the LED, and the light guide plate includes a light input part and a light output part. The light beam emitted by the LED enters the light guide plate from the light input part and moves to the light output part through total reflection inside the light guide plate. By directing the light output part to different irradiation directions, the light is guided to different areas, thereby increasing the divergence of the light.

[0003] At present, the taillight structure is relatively crowded, and the use of LED is prone to bright spots and dark spots, uneven light emission, and local light intensity does not meet the requirements, which affects the vehicle lighting effect, poses a safety hazard, and affects the appearance of the lights. Therefore, a uniform light distribution design is required for the car taillights. Summary of the invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a separate adaptive automobile taillight and a car light lighting system thereof, so as to avoid the trouble of uniform light distribution of automobile taillights in the past.

[0005] In order to solve the above technical problems, the present invention discloses a split-type adaptive automobile taillight, which includes an outer taillight assembly and an inner taillight assembly, wherein the outer taillight assembly includes: an outer taillight lamp holder bracket, which is mounted on the automobile tail pillar; an outer taillight decorative shell fixed in the outer taillight lamp holder bracket by screws; an upper position lamp and a lower turn lamp mounted in the outer taillight decorative shell, wherein the upper position lamp is in a horizontal Y shape; and an outer taillight lamp cover which is heat-melted and welded to the outer taillight lamp holder bracket; The inner taillight assembly includes: an inner taillight lamp holder bracket, which is installed on the tailgate of the car; an inner taillight decorative shell fixed in the inner taillight lamp holder bracket by screws; an upper brake light, a middle position light, and a lower brake light installed in the inner taillight decorative shell, wherein the middle position light faces the upper position light; and an inner taillight lampshade which is hot-melt welded to the inner taillight lamp holder bracket.

[0006] According to one embodiment of the present invention, the upper position light, lower turn signal light, upper brake light, middle position light, and lower brake light are all configured as LED components, and the LED components include an LED flexible light strip installed with LED lamp beads, and the LED flexible light strip is fixed to the outer taillight decorative shell or the inner taillight decorative shell through a light strip bracket.

[0007] According to an embodiment of the present invention, the inner taillight assembly further includes a lattice reflector located at the edge of the inner circle.

[0008] According to an embodiment of the present invention, waterproof vents are provided at the rear ends of the outer taillight assembly and the inner taillight assembly.

[0009] The present invention also discloses a separate type adaptive automobile taillight lighting system, including: LED light source driving circuit and dimming circuit, LED light source uses low voltage drop, high color rendering index LED light source, LED light source typical conduction voltage drop is 12V; dimming circuit uses PWM dimming, the system uses U3-555 chip as PWM generator, including third chip, fifth capacitor, sixth capacitor, seventh capacitor, fifth resistor, second diode, third diode, sixth resistor, first switch potentiometer, first capacitor. The switch end pin of the first switch potentiometer is connected to the power supply; the first capacitor is a bypass capacitor; the third chip is a 555 timer, the first pin of the third chip is connected to the power supply, the second and sixth pins of the third chip are connected to the sliding pin end of the first switch potentiometer, and are connected to one end of the fifth capacitor at the same time, and the other end of the fifth capacitor is connected to the power supply.

[0010] Compared with the prior art, the present invention can achieve the following technical effects: The taillight assembly is formed by the cooperation of the outer taillight assembly and the inner taillight assembly, and each light area is reasonably arranged to avoid the impact of crowded space on light distribution. At the same time, the LED light source drive circuit and dimming circuit are used to further even out the LED light, with excellent light distribution and strong adaptability.

[0011] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 is a schematic diagram of a separate adaptive automobile taillight according to an embodiment of the present invention; Figure 2 It is the circuit diagram of the car light lighting system. Figure ID

[0013] Outer tail light assembly 10 , inner tail light assembly 20 , outer tail light lamp holder bracket 31 , outer tail light decorative shell 32 , upper position light 41 , lower turn signal light 42 , inner tail light lamp holder bracket 51 , inner tail light decorative shell 52 , upper brake light 61 , middle position light 62 , lower brake light 63 , lattice reflector 70 . DETAILED DESCRIPTION

[0014] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0015] Please refer to Figure 1 , Figure 1 Schematic diagram of a separate adaptive automobile taillight according to an embodiment of the present invention.

[0016] As shown in the figure, a split adaptive automobile taillight comprises an outer taillight assembly 10 and an inner taillight assembly 20, wherein the outer taillight assembly 10 comprises: an outer taillight lamp holder bracket 21, the outer taillight lamp holder bracket 21 is mounted on the automobile tail pillar; an outer taillight decorative shell 22 fixed in the outer taillight lamp holder bracket 21 by screws; an upper position light 31 and a lower turn signal light 32 installed in the outer taillight decorative shell 22, wherein the upper position light 31 is in a horizontal Y shape; and an outer taillight lampshade welded to the outer taillight lamp holder bracket 21 by heat-melting; the inner taillight assembly 20 comprises: an inner taillight lamp holder bracket 41, the inner taillight lamp holder bracket 41 is mounted on the automobile tailgate; an inner taillight decorative shell 42 fixed in the inner taillight lamp holder bracket 41 by screws; an upper brake light 51, an intermediate position light 52, and a lower brake light 53 installed in the inner taillight decorative shell 42, wherein the intermediate position light 52 faces the upper position light 31; and an inner taillight lampshade welded to the inner taillight lamp holder bracket 41 by heat-melting.

[0017] In one embodiment of the present invention, the outer taillight assembly 10 and the inner taillight assembly 20 cooperate to form an outer taillight assembly, wherein the outer taillight assembly 10 is installed on the vehicle body outside the door, that is, the tail pillar of the vehicle, and the inner taillight assembly 20 is installed on the tailgate of the vehicle, forming a separate cooperation, which greatly increases the installation area of ​​the taillight, provides stronger warning to vehicles behind, and improves safety.

[0018] The outer taillight assembly 10 is composed of an outer taillight lamp holder bracket 31, an outer taillight decorative shell 32, and an outer taillight lampshade, and an upper position light 41 and a lower turn signal 42 are installed inside. The upper position light 41 is in a horizontal Y shape, that is, two branches extend to the outside of the vehicle, and the middle trunk leads to the inner taillight assembly 20, which is highly decorative and more eye-catching. The lower turn signal 42 is located at the lower end to serve as a turn prompt.

[0019] The inner taillight assembly 20 is composed of an inner taillight lamp holder bracket 51, an inner taillight decorative shell 52, and an inner taillight lampshade, and an upper brake light 61, a middle position light 62, and a lower brake light 63 are installed inside. The three are arranged in three linear lines, among which the middle position light 62 guides the upper position light 41 facing the outer taillight assembly 10 to form a correspondence. When it is lit, it does not appear abrupt and has a stronger warning effect.

[0020] Preferably, the upper position light 31, the lower turn signal light 32, the upper brake light 51, the middle position light 52, and the lower brake light 53 are all configured as LED components. The LED components include LED flexible light strips equipped with LED lamp beads. The LED flexible light strips are fixed to the outer taillight decorative shell 21 or the inner taillight decorative shell 41 through a light strip bracket, and have high brightness and safety.

[0021] In addition, the inner taillight assembly 20 also includes a lattice reflector 70 located at the edge of the inner circle, which has the effect of reflecting the light of the rear headlights and has a strong warning effect.

[0022] The rear ends of the outer taillight assembly 10 and the inner taillight assembly 20 are both provided with waterproof and breathable holes, which play a waterproof and breathable role and prevent fogging inside the lights.

[0023] Please continue to refer to Figure 2 , Figure 2 The invention also discloses a separate adaptive automobile taillight lighting system, including: an LED light source driving circuit and a dimming circuit, wherein the LED light source is a low voltage drop, high color rendering index LED light source, and the typical conduction voltage drop of the LED light source is 12V.

[0024] The LED light source driving circuit includes a first chip U1, a first resistor R1, a second capacitor C2, a first inductor L1, a third capacitor C3, an LED output interface CN3, a third resistor R3, and a fourth resistor R4; the first chip U1 is an LED constant current driving chip, model PAM2804AAB010; the first pin of the first chip U1 is a PWM input end, connected to one end of the third resistor R3 and one end of the fourth resistor R4; the other end of the third resistor R3 is connected to the third pin of the third chip U3 in the PWM dimming circuit; the other end of the fourth resistor R4 is connected to the working power ground; the second pin of the first chip U1 is connected to the working power ground; the third pin of the first chip U1 is connected to one end of the first inductor L1, and the other end of the first inductor L1 is connected to the working power ground. The first end of the LED output interface CN3 is connected to the power supply; the fourth pin of the first chip U1 is connected to the power supply; the fifth pin of the first chip U1 is connected to one end of the current-limiting resistor first resistor R1, and the other end of the first resistor R1 is connected to the working power ground; the first pin of the LED output interface CN3 is output to the positive end of the LED light source, and the second pin of the LED output interface CN3 is output to the negative end of the LED light source; the first pin of the LED output interface CN3 is connected to one end of the third capacitor C3, and the other end of the third capacitor C3 is connected to the working power ground; the second pin of the LED output interface CN3 is connected to the fifth pin of the first chip U1; the second capacitor C2 is a bypass capacitor, one end of the second capacitor C2 is connected to the power supply, and the other end of the second capacitor C2 is connected to the working power ground.

[0025] The dimming circuit adopts PWM dimming, including a third chip U3, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a fifth resistor R5, a second diode D2, a third diode D3, a sixth resistor R6, a first switch potentiometer LR1, and a first capacitor C1; the switch primary end pin of the first switch potentiometer LR1 is connected to the lithium battery connection terminal CN21 pin in the charging access protection circuit, and the switch secondary end pin of the first switch potentiometer LR1 is connected to the working power supply; the first capacitor C1 is a bypass capacitor, one end of the first capacitor C1 is connected to the working power supply, and the other end of the first capacitor C1 is connected to the working power supply ground; the third chip U3 is a 555 timer, and the first pin of the third chip U3 is connected to the working power supply ground; the second and sixth pins of the third chip U3 are connected to the sliding pin end of the first switch potentiometer LR1, and are also connected to one end of the fifth capacitor C5, and the other end of the fifth capacitor C5 is connected to the working power supply ground; the third chip The fourth and eighth pins of the third chip U3 are connected to the working power supply; the fifth pin of the third chip U3 is connected to one end of the sixth capacitor C6, and the other end of the sixth capacitor C6 is connected to the working power ground; the seventh pin of the third chip U3 is connected to the positive electrode of the second diode D2 and the negative electrode of the third diode D3; the negative electrode of the second diode D2 is connected to one end of the first switch potentiometer LR1 resistor; the positive electrode of the third diode D3 is connected to one end of the sixth resistor R6, and the other end of the sixth resistor R6 is connected to the other end of the first switch potentiometer LR1 resistor; the fifth resistor R5 is a pull-up resistor, one end of the fifth resistor R5 is connected to the seventh pin of the third chip U3, and the other end of the fifth resistor R5 is connected to the working power supply; the seventh capacitor C7 is a bypass capacitor, one end of the seventh capacitor C7 is connected to the working power supply, and the other end of the seventh capacitor C7 is connected to the working power ground; the third pin of the third chip U3 is a dimming signal output, which is connected to the above-mentioned LED light source driving circuit.

[0026] This system uses PWM dimming for LED light sources. Compared with current dimming, PWM dimming will not cause spectrum instability and poor linearity in low brightness. The system uses U3-555 chip as PWM generator. By adjusting the potentiometer LR1, the output duty cycle changes from 1% to 99%. Capacitors C6 and C7 are used to eliminate the influence of the oscillation circuit on the system power supply. The adjusted PWM signal is coupled with U1 through R3 and R4. U1 is a buck-type LED constant current driver chip, which has higher efficiency and stability than boost-type chips. By selecting R1 with a suitable resistance value to adjust the current size, U1 outputs a constant current to the LED light source. With the cooperation of U1 and U3, stable and linear dimming of the LED light source can be achieved, and the light distribution is uniform.

[0027] In summary, the present invention forms a taillight assembly by combining an outer taillight assembly with an inner taillight assembly, rationally arranges various light areas to avoid space crowding affecting light distribution, and simultaneously uses an LED light source drive circuit and a dimming circuit to further even out the LED light, with excellent light distribution and strong adaptability.

[0028] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A split adaptive automobile taillight, comprising an outer taillight assembly and an inner taillight assembly, characterized in that: The outer tail light assembly comprises: an outer tail light holder bracket, the outer tail light holder bracket is mounted on the tail pillar of the automobile; an outer tail light decorative shell fixed in the outer tail light holder bracket by screws; an upper position light and a lower turn signal light mounted in the outer tail light decorative shell, the upper position light being in a horizontal Y shape; and an outer tail light cover heat-melted to the outer tail light holder bracket; The inner taillight assembly includes: an inner taillight lamp holder bracket, which is installed on the tailgate of the car; an inner taillight decorative shell fixed in the inner taillight lamp holder bracket by screws; an upper brake light, an intermediate position light, and a lower brake light installed in the inner taillight decorative shell, wherein the intermediate position light is opposite to the upper position light; and an inner taillight lamp cover that is hot-melt welded to the inner taillight lamp holder bracket.

2. The split adaptive automobile taillight according to claim 1, characterized in that: The upper position light, lower turn signal light, upper brake light, middle position light and lower brake light are all configured as LED components, and the LED components include LED flexible light strips installed with LED lamp beads, and the LED flexible light strips are fixed to the outer taillight decorative shell or the inner taillight decorative shell through a light strip bracket.

3. The split adaptive automobile taillight according to claim 1, characterized in that: The inner taillight assembly further includes a lattice reflector located at the edge of the inner circle.

4. The split adaptive automobile taillight according to claim 1, characterized in that: The rear ends of the outer taillight assembly and the inner taillight assembly are both provided with waterproof vents.

5. A separate adaptive automobile taillight lighting system as claimed in claim 1, characterized in that: include: LED light source driving circuit and dimming circuit, LED light source uses low voltage drop, high color rendering index LED light source, the typical conduction voltage drop of LED light source is 2.85V; The dimming circuit adopts PWM dimming, and the system adopts U3-555 chip as PWM generator, including the third chip, the fifth capacitor, the sixth capacitor, the seventh capacitor, the fifth resistor, the second diode, the third diode, the sixth resistor, the first switch potentiometer, and the first capacitor. The switch end pin of the first switch potentiometer is connected to the power supply; the first capacitor is a bypass capacitor; the third chip is a 555 timer, the first pin of the third chip is connected to the power supply, the second and sixth pins of the third chip are connected to the sliding pin end of the first switch potentiometer, and are connected to one end of the fifth capacitor at the same time, and the other end of the fifth capacitor is connected to the power supply.

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