Brightness control device and vehicle

Abstract

The utility model discloses a brightness control device and a vehicle, and relates to the brightness control device technology field, the brightness control device comprises a control assembly, a linear constant current chip and a metal box body, the linear constant current chip comprises a first resistor, a second resistor and a third resistor, the first resistor, the second resistor and the third resistor are respectively connected with the control assembly, and the metal box body is connected with the control assembly. The first resistor, the second resistor and the third resistor are respectively connected with the rear combined lamp group, the rear combined lamp group is electrically connected with a power supply anode of a vehicle, the control assembly is electrically connected with a power supply cathode of the vehicle, and the metal box body is mounted on the vehicle; a control assembly and a linear constant current chip are arranged in a metal box body, and a plurality of wave-shaped heat dissipation fins fully distributed on the inner wall of the metal box body are arranged, so that the control assembly and the linear constant current chip can be cooled; by means of the structure, the rear combined lamp set can generate different brightness changes according to the opening and closing condition of the tail door and the braking condition of the vehicle, so that the rear vehicle is reminded, and danger is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brightness control device, especially relates to a brightness control device and vehicle. BACKGROUND

[0002] In the vehicle lighting system, the tail lamp as an important safety component, not only needs to provide basic lighting function, still needs to pass clear warning signal under the scene such as brake, tailgate operation, the tail lamp must satisfy following two regulations: GB5920-2019 automobile and trailer front position lamp, rear position lamp, outline lamp and brake light distribution performance and GB 4785-2019 automobile and trailer exterior lighting and light signal device installation regulation, two regulations stipulate distribution requirement, in order to satisfy visual effect, there is proportional requirement to brightness, and the vehicle is in production, in order to satisfy modeling, there is requirement to tail lamp area shape, these factors influence each other.

[0003] The brightness of the existing tail lamp is usually a fixed value and cannot be dynamically adjusted according to the vehicle state. For example, when the tail door is opened, the rear through lamp is arranged on the tail door, and the rear through lamp will not play a lighting role, so the brightness of the rear combination lamp group needs to be higher to play a warning role. However, the traditional rear combination lamp group still maintains the conventional brightness, resulting in insufficient lighting effect, which is prone to danger. When braking, the brightness of the rear through lamp and the rear combination lamp group does not change, and the vehicle behind cannot know the braking condition of the vehicle in front, which is prone to danger.

[0004] Therefore, it is necessary to provide a new brightness control device and vehicle to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a brightness control device and vehicle, which aims to improve the technical problem that the brightness of the tail lamp of the automobile in the prior art is fixed and prone to danger.

[0006] To achieve the above-mentioned purpose, according to one aspect of the utility model, the utility model provides a brightness control device for controlling the brightness of the tail lamp of a vehicle, wherein the tail lamp includes a rear combination lamp group and a rear through lamp, the rear combination lamp group includes a left rear combination lamp and a right rear combination lamp, the left rear combination lamp and the right rear combination lamp are arranged on the tail of the vehicle, and the rear through lamp is arranged on the tail door of the vehicle. The brightness control device comprises:

[0007] A control component;

[0008] linear constant current chip, the linear constant current chip comprising a first resistor, a second resistor and a third resistor, the first resistor, the second resistor and the third resistor being connected with the control component respectively, the first resistor, the second resistor and the third resistor being connected with the rear combination lamp group respectively, the rear combination lamp group being used for being electrically connected with the positive pole of the power supply of the vehicle, the control component being used for being electrically connected with the negative pole of the power supply of the vehicle;

[0009] metal box body, the metal box body being used for being installed in the vehicle, the control component and the linear constant current chip being arranged in the metal box body, the metal box body being provided with wave-shaped heat dissipation fins, the wave-shaped heat dissipation fins being arranged in a plurality of numbers, the wave-shaped heat dissipation fins being arranged in a spaced manner and covering the inner wall of the metal box body;

[0010] the brightness control device at least having a first working state, a second working state and a third working state:

[0011] when the tail door is closed, the brightness control device is in the first working state, and the first resistor is electrically connected with the control component;

[0012] when the tail door is opened, the brightness control device is in the second working state, and the first resistor and the second resistor are both electrically connected with the control component;

[0013] when the vehicle is in braking, the brightness control device is in the third working state, and the first resistor, the second resistor and the third resistor are all electrically connected with the control component.

[0014] in an embodiment, a heat-conducting silica gel layer is filled between the wave-shaped heat dissipation fins and the linear constant current chip.

[0015] in an embodiment, a honeycomb-shaped heat dissipation hole is arranged on the outside of the metal box body.

[0016] in an embodiment, a mounting groove is arranged at the bottom of the metal box body, and a protrusion is arranged in the vehicle and is clamped in the mounting groove.

[0017] In an embodiment, the vehicle further comprises a brake pedal and a tailgate switch, the tailgate switch is arranged on the vehicle, the tailgate switch is used to close or open the tailgate, the control assembly comprises a mechanical relay, the mechanical relay comprises a movable contact, a first shutter, a second shutter, a third shutter, a first static contact, a second static contact and a third static contact, the second shutter and the third shutter are both hinged to the movable contact, the movable contact is used to be connected with a power negative of the vehicle through a wire, two ends of the first shutter are respectively electrically connected with the movable contact and the first static contact, the first resistor is electrically connected with the first static contact, the second resistor is electrically connected with the second static contact, and the third resistor is electrically connected with the third static contact; the second shutter is used to be connected with the tailgate switch, when the tailgate is opened, the tailgate switch drives the second shutter to be connected with the third static contact, and when the tailgate is closed, the tailgate switch drives the second shutter to be separated from the third static contact; the brake pedal is used to be connected with the second shutter and the third shutter, so as to drive the second shutter to be connected with or separated from the second static contact and the third shutter to be connected with or separated from the third static contact.

[0018] In an embodiment, surfaces of the first resistor, the second resistor and the third resistor are all covered with a ceramic heat dissipation coating.

[0019] In an embodiment, the brightness control device further comprises a switching circuit, the switching circuit is used to be connected in series between the rear combination lamp group and a power supply of the vehicle.

[0020] According to another aspect of the utility model, the utility model also provides a vehicle, including tail light, tailgate, shell and the brightness control device that above described, the tailgate rotates installation in the shell, the tail light includes rear combination lamp group and rear through lamp, the rear combination lamp group includes left rear combination lamp and right rear combination lamp, left rear combination lamp and right rear combination lamp are all used to set up in the tail of vehicle, the rear through lamp is used to set up in the tailgate of vehicle, the brightness control device is electrically connected with the rear combination lamp group.

[0021] In an embodiment, the left rear combination lamp and the right rear combination lamp have the same area, and the area ratio of the rear through lamp to the left rear combination lamp and the right rear combination lamp is 3:1.

[0022] In an embodiment, a plurality of equal number of LEDs are arranged in the left rear combination lamp, the right rear combination lamp and the rear through lamp.

[0023] In the above scheme, the brightness control device is used for brightness control of the tail lamp of the vehicle, the tail lamp includes a rear combination lamp group and a rear running light, the rear combination lamp group includes a left rear combination lamp and a right rear combination lamp, the left rear combination lamp and the right rear combination lamp are arranged at the tail of the vehicle, and the rear running light is arranged at the tail door of the vehicle. The brightness control device includes a control component, a linear constant current chip, and a metal box body. The linear constant current chip includes a first resistor, a second resistor, and a third resistor. The first resistor, the second resistor, and the third resistor are connected with the control component respectively. The first resistor, the second resistor, and the third resistor are connected with the rear combination lamp group respectively. The rear combination lamp group is electrically connected with the positive electrode of the power supply of the vehicle. The control component is electrically connected with the negative electrode of the power supply of the vehicle. The metal box body is installed on the vehicle. The control component and the linear constant current chip are arranged in the metal box body. The metal box body is provided with wave-shaped heat dissipation fins. The number of the wave-shaped heat dissipation fins is multiple. The multiple wave-shaped heat dissipation fins are arranged at intervals and cover the inner wall of the metal box body. The brightness control device has at least a first working state, a second working state, and a third working state. When the tail door is closed, the brightness control device is in the first working state, and the first resistor is electrically connected with the control component. When the tail door is opened, the brightness control device is in the second working state, and the first resistor and the second resistor are electrically connected with the control component. When the vehicle is braking, the brightness control device is in the third working state, and the first resistor, the second resistor, and the third resistor are electrically connected with the control component. When the vehicle is in a normal running state, the tail door is closed. At this time, the first resistor is electrically connected with the negative electrode of the power supply of the vehicle. The rear combination lamp group includes the left rear combination lamp and the right rear combination lamp. The left rear combination lamp and the right rear combination lamp are electrically connected with the first resistor. In this way, the negative electrode of the power supply of the vehicle, the control component, the first resistor, the left rear combination lamp, the right rear combination lamp, and the positive electrode of the power supply of the vehicle form a power-on circuit. In this way, the left rear combination lamp and the right rear combination lamp emit light. At this time, the brightness of the left rear combination lamp and the brightness of the right rear combination lamp are the same as the brightness of the rear running light. The brightness meets the regulatory requirements and can remind the vehicle behind. When the tail door is opened, the rear running light on the tail door is raised with the tail door. At this time, the light emitted by the rear running light cannot be seen behind the vehicle. In order to remind the vehicle behind, at this time, the first resistor and the second resistor are electrically connected with the negative electrode of the power supply of the vehicle. In this way, the negative electrode of the power supply of the vehicle, the control component, the first resistor, the second resistor, the left rear combination lamp, the right rear combination lamp, and the positive electrode of the power supply of the vehicle form a power-on circuit. In this way, the left rear combination lamp and the right rear combination lamp emit light. The first resistor and the second resistor are connected in parallel. Since the first resistor and the second resistor are connected in parallel, the total resistance value decreases, but the voltage value of the power supply of the vehicle does not change. In this way, the current of the entire circuit rises. In this way, the brightness of the left rear combination lamp and the right rear combination lamp increases, so that the brightness of the left rear combination lamp and the right rear combination lamp meets the regulatory requirements and can remind the vehicle behind.When the vehicle brakes, in order to remind the rear vehicle, the brightness of the rear combination lamp group needs to be further improved, at this time the first resistor, the second resistor and the third resistor are electrically connected with the negative pole of the power supply of the vehicle, so that the negative pole of the power supply of the vehicle, the control assembly, the first resistor, the second resistor, the third resistor, the left rear combination lamp, the right rear combination lamp and the positive pole of the power supply of the vehicle form a power-on circuit, so that the left rear combination lamp and the right rear combination lamp will emit light, wherein the first resistor, the second resistor and the third resistor are connected in parallel, and since the first resistor, the second resistor and the third resistor are connected in parallel, the total resistance value is further reduced, and the voltage value of the power supply of the vehicle does not change, so that the current of the entire circuit will further increase, so that the brightness of the left rear combination lamp and the right rear combination lamp will be further increased, so that when braking, the left rear combination lamp and the right rear combination lamp will have obvious brightness change, so as to remind the rear vehicle that the vehicle is braking, so as to avoid danger; During the operation of the entire brightness control device, the control assembly and the linear constant current chip will generate heat during long-term use, which is easy to cause damage to the control assembly and the linear constant current chip, in order to ensure the normal use of the control assembly and the linear constant current chip, the control assembly and the linear constant current chip are arranged in the metal box body, and a plurality of wave-shaped heat dissipation fins are arranged on the inner wall of the metal box body and fill the inner wall of the metal box body, so that the heat generated by the control assembly and the linear constant current chip can be quickly transferred to the metal box body and then transferred to the outside, so that the control assembly and the linear constant current chip can be protected from damage due to long-term heating; Through the structure, the rear combination lamp group can produce different brightness changes according to the opening and closing of the tail door and the braking condition of the vehicle, so as to remind the rear vehicle and avoid danger. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0025] Figure 1 The overall connection schematic diagram of the brightness control device provided by the present application is shown in the embodiment.

[0026] Figure 2 The internal structure schematic diagram of the metal box body provided by the present application is shown in the embodiment.

[0027] Figure 3 The circuit schematic diagram of the brightness control device provided by the present application is shown in the embodiment.

[0028] Figure 4The circuit schematic diagram of another embodiment of the brightness control device provided by the utility model;

[0029] Figure 5 The signal schematic diagram of an embodiment of the brightness control device provided by the utility model;

[0030] Figure 6 The circuit signal schematic diagram of an embodiment of the brightness control device provided by the utility model;

[0031] Figure 7 The structure schematic diagram of an embodiment of the tail lamp provided by the utility model.

[0032] Explanation of reference numerals:

[0033] 100, brightness control device; 101, power supply; 102, tail lamp; 103, rear combination lamp group; 103a, left rear combination lamp; 103b, right rear combination lamp; 104, rear through lamp; 105, brake pedal; 106, tail gate switch; 1, control assembly; 11, signal switch; 111, first contact point; 112, second contact point; 113, third contact point; 114, total contact point; 115, moving contact point; 116, first static contact point; 117, second static contact point; 118, third static contact point; 119, first blade; 119a, second blade; 119b, third blade; 12, area controller; 13, logic switch; 2, linear constant current chip; 21, first resistor; 22, second resistor; 23, third resistor; 3, first induction sensor; 4, second induction sensor; 5, switching circuit; 6, metal box body; 61, wave-shaped heat dissipation fin; 7, heat-conducting silica gel layer.

[0034] The realization, functional features and advantages of the utility model will be further described with reference to the accompanying drawings in combination with embodiments. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0036] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0037] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include "A and / or B", including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0038] To achieve the above-mentioned purpose, according to one aspect of the present application, please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6The utility model provides a kind of brightness control device 100, for the brightness control of the tail light 102 of vehicle, tail light 102 includes rear combination lamp group 103 and rear through lamp 104, rear combination lamp group 103 includes left rear combination lamp 103a and right rear combination lamp 103b, left rear combination lamp 103a and right rear combination lamp 103b are used to set in the tail of vehicle, rear through lamp 104 is used to set in the tailgate of vehicle, brightness control device 100 includes control assembly 1, linear constant current chip 2 and metal box body 6, linear constant current chip 2 includes first resistance 21, second resistance 22 and third resistance 23, first resistance 21, second resistance 22 and third resistance 23 are connected with control assembly 1 respectively, first resistance 21, second resistance 22 and third resistance 23 are connected with rear combination lamp group 103 respectively, rear combination lamp group 103 is used to be connected with the positive pole electricity of power supply 101 of vehicle, control assembly 1 is used to be connected with the negative pole electricity of power supply 101 of vehicle, metal box body 6 is used to install in vehicle, control assembly 1 and linear constant current chip 2 are all set in metal box body 6, wave-shaped heat dissipation fin 61 is equipped in metal box body 6, the number of wave-shaped heat dissipation fin 61 is multiple, multiple wave-shaped heat dissipation fin 61 is arranged at intervals, and wall in metal box body 6 is covered with;Brightness control device 100 at least has first working state, second working state and third working state: when tailgate is closed, brightness control device 100 is in first working state, first resistance 21 is electrically connected with control assembly 1;When tailgate is opened, brightness control device 100 is in second working state, first resistance 21 and second resistance 22 are electrically connected with control assembly 1;When vehicle is in braking, brightness control device 100 is in third working state, first resistance 21, second resistance 22 and third resistance 23 are electrically connected with control assembly 1.Vehicle normal operation state, tailgate is closed, first resistance 21 is electrically connected with the negative pole of power supply 101 of vehicle, rear combination lamp group 103 includes left rear combination lamp 103a and right rear combination lamp 103b, left rear combination lamp 103a and right rear combination lamp 103b are electrically connected with first resistance 21 respectively, so that the negative pole of power supply 101 of vehicle, control assembly 1, first resistance 21, left rear combination lamp 103a, right rear combination lamp 103b and the positive pole of power supply 101 of vehicle constitute power circuit, so that left rear combination lamp 103a, right rear combination lamp 103b will emit light, and the brightness of left rear combination lamp 103a, the brightness of right rear combination lamp 103b are same with the brightness of rear through lamp 104 at this time, brightness meets the requirement of regulation, and can remind rear vehicle.When the tail door is opened, the rear penetration lamp 104 on the tail door is lifted with the tail door, and at this time, the light emitted by the rear penetration lamp 104 cannot be seen behind the vehicle. In order to remind the vehicle behind, the first resistor 21 and the second resistor 22 are respectively electrically connected to the negative electrode of the power supply 101 of the vehicle at this time, so that the negative electrode of the power supply 101 of the vehicle, the control assembly 1, the first resistor 21, the second resistor 22, the left rear combination lamp 103a, the right rear combination lamp 103b and the positive electrode of the power supply 101 of the vehicle form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b emit light, wherein the first resistor 21 and the second resistor 22 are connected in parallel, and since the first resistor 21 and the second resistor 22 are connected in parallel, the total resistance value decreases, but the voltage value of the power supply 101 of the vehicle does not change, so that the current of the entire circuit rises, and the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b increases, so that the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b meets the regulatory requirements and can remind the vehicle behind; when the vehicle brakes, in order to remind the vehicle behind, the brightness of the rear combination lamp group 103 needs to be further increased, at this time, the first resistor 21, the second resistor 22 and the third resistor 23 are respectively electrically connected to the negative electrode of the power supply 101 of the vehicle, so that the negative electrode of the power supply 101 of the vehicle, the control assembly 1, the first resistor 21, the second resistor 22, the third resistor 23, the left rear combination lamp 103a, the right rear combination lamp 103b and the positive electrode of the power supply 101 of the vehicle form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b emit light, wherein the first resistor 21, the second resistor 22 and the third resistor 23 are connected in parallel, and since the first resistor 21, the second resistor 22 and the third resistor 23 are connected in parallel, the total resistance value is further reduced, but the voltage value of the power supply 101 of the vehicle does not change, so that the current of the entire circuit further rises, and the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b further increases, so that when braking, the left rear combination lamp 103a and the right rear combination lamp 103b have obvious brightness changes, which can remind the vehicle behind that the vehicle is braking, so that danger can be avoided; during the operation of the entire brightness control device 100, the control assembly 1 and the linear constant current chip 2 will generate heat during long-term use, which is easy to cause damage to the control assembly 1 and the linear constant current chip 2. In order to ensure the normal use of the control assembly 1 and the linear constant current chip 2, the control assembly 1 and the linear constant current chip 2 are placed in the metal box body 6, and a plurality of wave-shaped heat dissipation fins 61 are arranged on the inner wall of the metal box body 6, which can quickly transfer the heat generated by the control assembly 1 and the linear constant current chip 2 to the metal box body 6 and then to the outside, so as to protect the control assembly 1 and the linear constant current chip 2 from being damaged due to long-term heating. Through such a structure, the rear combination lamp group 103 can produce different brightness changes according to the opening and closing of the tail door and the braking of the vehicle, thereby reminding the vehicle behind and avoiding danger.

[0039] Please see Figure 2 In one embodiment, a thermally conductive silicone layer 7 is filled between the wavy heat sink 61 and the linear constant current chip 2. By providing the thermally conductive silicone layer 7, the heat emitted by the linear constant current chip 2 can be transferred to the wavy heat sink 61, thereby cooling the linear constant current chip 2 more quickly.

[0040] In one embodiment, the exterior of the metal housing 6 is provided with honeycomb-shaped heat dissipation holes. By providing honeycomb-shaped heat dissipation holes on the exterior of the metal housing 6, the temperature of the metal housing 6 can be dissipated through the honeycomb-shaped heat dissipation holes, thereby quickly cooling the metal housing 6 and improving the cooling rate of the metal housing 6.

[0041] In one embodiment, the bottom of the metal box 6 is provided with a mounting groove, and a protrusion is provided inside the vehicle, which engages with the mounting groove. In order to detachably install the metal box 6 inside the vehicle and ensure the secure installation of the metal box 6, a protrusion is provided on the vehicle, and a mounting groove is provided at the bottom of the metal box 6. This allows the protrusion to engage in the mounting groove, thus ensuring the secure installation of the metal box 6 and enabling its disassembly.

[0042] Please see Figure 3In an embodiment, the vehicle further comprises a brake pedal 105 and a tailgate switch 106, the tailgate switch 106 is arranged on the vehicle, the tailgate switch 106 is used to close or open the tailgate, the control assembly 1 comprises a mechanical relay, the mechanical relay comprises a movable contact 115, a first shutter 119, a second shutter 119a, a third shutter 119b, a first static contact 116, a second static contact 117 and a third static contact 118, the second shutter 119a and the third shutter 119b are both hinged to the movable contact 115, the movable contact 115 is used to be connected with the negative pole of the power supply 101 of the vehicle through a wire, two ends of the first shutter 119 are respectively electrically connected with the movable contact 115 and the first static contact 116, the first resistor 21 is electrically connected with the first static contact 116, the second resistor 22 is electrically connected with the second static contact 117, and the third resistor 23 is electrically connected with the third static contact 118; the second shutter 119a is used to be connected with the tailgate switch 106, when the tailgate is opened, the tailgate switch 106 drives the second shutter 119a to be connected with the third static contact 118, and when the tailgate is closed, the tailgate switch 106 drives the second shutter 119a to be separated from the third static contact 118; the brake pedal 105 is used to be connected with the second shutter 119a and the third shutter 119b, so as to drive the second shutter 119a to be connected with or separated from the second static contact 117 and the third shutter 119b to be connected with or separated from the third static contact 118. When the tailgate is closed, the first shutter 119 is connected with the first static contact 116, so that the movable contact 115 and the first static contact 116 are communicated, and the first resistor 21 is electrically connected with the negative pole of the power supply 101 of the vehicle, the rear combination lamp set 103 comprises a left rear combination lamp 103a and a right rear combination lamp 103b, the left rear combination lamp 103a and the right rear combination lamp 103b are respectively electrically connected with the first resistor 21, so that the negative pole of the power supply 101 of the vehicle, the control assembly 1, the first resistor 21, the left rear combination lamp 103a, the right rear combination lamp 103b and the positive pole of the power supply 101 of the vehicle form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b emit light, and the brightness of the left rear combination lamp 103a and the brightness of the right rear combination lamp 103b are the same as the brightness of the rear running light 104 at this time, the brightness meets the regulatory requirements, and can remind the rear vehicle.When the tail gate needs to be opened, the tail gate switch 106 is pressed, so that the tail gate is opened, and the rear running light 104 on the tail gate is raised with the tail gate, at this time, the light emitted by the rear running light 104 cannot be seen behind the vehicle, in order to remind the vehicle behind, the tail gate switch 106 is connected with the second shutter 119a through a connecting rod, so that after the tail gate switch 106 is pressed, the second shutter 119a is pushed to rotate towards the second static contact 117, and the second shutter 119a is connected with the second static contact 117, at this time, the second shutter 119a is connected with the second static contact 117, the first resistor 21 and the second resistor 22 are respectively connected with the negative pole of the power supply 101 of the vehicle, so that the negative pole of the power supply 101 of the vehicle, the control assembly 1, the first resistor 21, the second resistor 22, the left rear combination lamp 103a, the right rear combination lamp 103b and the positive pole of the power supply 101 of the vehicle form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b emit light, wherein the first resistor 21 and the second resistor 22 are connected in parallel, and since the first resistor 21 and the second resistor 22 are connected in parallel, the total resistance value decreases, but the voltage value of the power supply 101 of the vehicle does not change, so that the current of the entire circuit rises, so that the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b increases, so that the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b meets the regulatory requirements and can remind the vehicle behind; when the vehicle brakes, in order to remind the vehicle behind, the brightness of the rear combination lamp group 103 needs to be further increased, the brake pedal 105 is stepped on, the brake pedal 105 is connected with the second shutter 119a and the third shutter 119b through two connecting rods, so that the second shutter 119a is pushed to rotate towards the second static contact 117 and connected with the second static contact 117, and the third shutter 119b is also pushed to rotate towards the third static contact 118 and connected with the third static contact 118, at this time, the first resistor 21, the second resistor 22 and the third resistor 23 are respectively connected with the negative pole of the power supply 101 of the vehicle, so that the negative pole of the power supply 101 of the vehicle, the control assembly 1, the first resistor 21, the second resistor 22, the third resistor 23, the left rear combination lamp 103a, the right rear combination lamp 103b and the positive pole of the power supply 101 of the vehicle form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b emit light, wherein the first resistor 21, the second resistor 22 and the third resistor 23 are connected in parallel, and since the first resistor 21, the second resistor 22 and the third resistor 23 are connected in parallel, the total resistance value further decreases, but the voltage value of the power supply 101 of the vehicle does not change, so that the current of the entire circuit further rises, so that the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b further increases, so that when braking, the left rear combination lamp 103a and the right rear combination lamp 103b have obvious brightness changes, which can remind the vehicle behind that the vehicle is braking, so that danger can be avoided.Through such a structure, the user can manually switch the brightness of the rear combination lamp group 103, thereby reminding the vehicle behind, avoiding danger.

[0043] In an embodiment, the surfaces of the first resistor 21, the second resistor 22 and the third resistor 23 are covered with a ceramic heat dissipation coating. By setting such a structure, the first resistor 21, the second resistor 22 and the third resistor 23 can be cooled, and the use of the first resistor 21, the second resistor 22 and the third resistor 23 is safe.

[0044] Please refer to Figure 5 and Figure 6 In an embodiment, the brightness control device 100 further comprises a first sensing sensor 3, the first sensing sensor 3 is signal connected with the control assembly 1, and the first sensing sensor 3 is used to detect whether the tail door is opened. When the tail door is opened, the position of the rear through lamp 104 is raised, which may exceed the range of the rear driver's sight, thereby affecting the warning effect on the vehicle behind. By using the first sensing sensor 3 to detect the state of the tail door, when the first sensing sensor 3 detects that the tail door is opened, the first sensing sensor 3 transmits a signal to the control assembly 1, at this time the control assembly 1 makes the first resistor 21 and the second resistor 22 respectively electrically connected with the negative electrode of the vehicle power supply 101, so that the negative electrode of the vehicle power supply 101, the control assembly 1, the first resistor 21, the second resistor 22, the left rear combination lamp 103a, the right rear combination lamp 103b and the positive electrode of the vehicle power supply 101 form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b will emit light, wherein the first resistor 21 and the second resistor 22 are in parallel, so the total resistance value decreases, so the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b will increase, so that the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b meets the regulatory requirements, and can remind the vehicle behind, reduce the risk of traffic accidents. Through the first sensing sensor 3 system, the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b can be automatically adjusted according to the opening and closing state of the tail door, without manual intervention. This intelligent design makes the vehicle's lighting system more flexible and efficient, and can adjust itself according to actual conditions to meet different needs. The automatic function improves the convenience and comfort of vehicle use. Users do not need to worry about the problem of insufficient brightness of the tail lamp 102 due to the change of the state of the tail door, the system will automatically make the best adjustment, enhancing the user's driving experience.

[0045] Please refer to Figure 5 and Figure 6In an embodiment, the control assembly 1 further comprises a signal switch 11, a zone controller 12, and a logic switch 13. The zone controller 12 is connected to the first sensing sensor 3 and the logic switch 13, respectively, and is used to send high and low levels. The logic switch 13 is connected to the signal switch 11. When the tailgate is closed, the first sensing sensor 3 does not sense the opening of the tailgate. At this time, the zone controller 12 sends a low level to the logic switch 13, which controls the signal switch 11 to connect, so that the first resistor 21 is electrically connected to the negative electrode of the vehicle power supply 101, and the left rear combination lamp 103a and the right rear combination lamp 103b are electrically connected to the first resistor 21. In this way, the negative electrode of the vehicle power supply 101, the control assembly 1, the first resistor 21, the left rear combination lamp 103a, the right rear combination lamp 103b, and the positive electrode of the vehicle power supply 101 form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b emit light, and the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b is the same as the brightness of the rear running lamp 104, which meets the brightness requirements of regulations and can remind the vehicles behind; when the tailgate is opened, the first sensing sensor 3 detects the opening of the tailgate, and the first sensing sensor 3 transmits a signal to the zone controller 12. The zone controller 12 sends a high level, and the logic switch 13 receives the high level and controls the signal switch 11 to connect, so that the first resistor 21 and the second resistor 22 are electrically connected to the negative electrode of the vehicle power supply 101, respectively. In this way, the negative electrode of the vehicle power supply 101, the control assembly 1, the first resistor 21, the second resistor 22, the left rear combination lamp 103a, the right rear combination lamp 103b, and the positive electrode of the vehicle power supply 101 form a power-on circuit, so that the left rear combination lamp 103a and the right rear combination lamp 103b emit light. Since the first resistor 21 and the second resistor 22 are connected in parallel, the total resistance value decreases, so that the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b increases, so that the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b meets the brightness requirements of regulations and can remind the vehicles behind, reducing the risk of traffic accidents. By sending high and low level signals through the zone controller 12 to control the working state of the brightness adjusting device, the brightness of the tail lamp 102 can be accurately adjusted. Different level signals correspond to different working modes, ensuring that the most appropriate illumination intensity is provided in various situations. The existence of the logic switch 13 allows the system to make more complex decisions based on different input conditions, such as adjusting the brightness of the rear combination lamp group 103 in combination with the opening and closing state of the tailgate. This not only helps to improve the visibility of the vehicle itself, but also better reminds other road users to pay attention to the state change of the vehicle, thereby reducing the occurrence of traffic accidents. The design scheme of the signal switch 11, the zone controller 12, and the logic switch 13 provides higher flexibility and scalability for the system.

[0046] Further, the first sensing sensor 3 can be a Hall sensor or a micro switch.

[0047] Referring to Figure 5 and Figure 6 In an embodiment, the brightness control device 100 further comprises a second sensing sensor 4, which is signal connected with the signal switch 11. The second sensing sensor 4 is used to detect whether the vehicle is braking. When the vehicle is braking, the second sensing sensor 4 detects that the vehicle is braking, and the second sensing sensor 4 transmits a signal to the signal switch 11. At this time, the signal switch 11 electrically connects the first resistor 21, the second resistor 22, and the third resistor 23 with the negative pole of the vehicle power supply 101, respectively. In this way, the negative pole of the vehicle power supply 101, the control assembly 1, the first resistor 21, the second resistor 22, the third resistor 23, the left rear combination lamp 103a, the right rear combination lamp 103b, and the positive pole of the vehicle power supply 101 form a power-on circuit. In this way, the left rear combination lamp 103a and the right rear combination lamp 103b will emit light. Among them, the first resistor 21, the second resistor 22, and the third resistor 23 are connected in parallel. Since the first resistor 21, the second resistor 22, and the third resistor 23 are connected in parallel, the total resistance value is further reduced, and the voltage value of the vehicle power supply 101 does not change. In this way, the current of the entire circuit will further increase, and the brightness of the left rear combination lamp 103a and the right rear combination lamp 103b will further increase. In this way, when braking, the left rear combination lamp 103a and the right rear combination lamp 103b will have a significant brightness change, which can remind the rear vehicle that the vehicle is braking, so as to avoid danger. When the vehicle is braking, the timely and obvious brightness change can more effectively remind the driver of the rear vehicle, thereby reducing the risk of rear-end accidents. By accurately detecting the braking state through the second sensing sensor 4 and adjusting the brightness of the tail lamp 102 accordingly, sufficient warning effect can be provided in emergency situations. The second sensing sensor 4 can monitor the braking condition of the vehicle in real time and quickly transmit information to the signal switch 11, thereby triggering the corresponding brightness adjustment mechanism. This rapid response mechanism can enhance the brightness of the tail lamp 102 in the first time to provide immediate warning for the following vehicle. In combination with the first sensing sensor 3 and the second sensing sensor 4, the brightness control device 100 can realize more accurate brightness adjustment according to the specific situation of the vehicle. No matter whether the tailgate is closed, opened, or the vehicle is braking, the system can automatically adjust to the best brightness setting to meet the regulatory requirements and ensure driving safety.

[0048] Further, the second sensing sensor 4 can be a brake pedal position sensor or a brake light circuit signal;

[0049] Referring to Figure 3 , Figure 4 and Figure 6In one embodiment, the brightness control device 100 further includes a switching circuit 5 connected in series between the rear combination lamp assembly 103 and the vehicle's power supply 101. By setting the switching circuit 5, the voltage of the entire circuit system can be reduced from 12V to 6.5V. Reducing the voltage helps decrease power consumption, especially when using LED lights. Because LED lights are highly efficient, sufficient brightness can still be maintained even with an appropriately reduced operating voltage, while minimizing unnecessary energy waste.

[0050] According to another aspect of this utility model, please refer to Figure 7 This utility model also provides a vehicle, including a taillight 102, a tailgate, a housing, and the aforementioned brightness control device 100. The tailgate is rotatably mounted on the housing. The taillight 102 includes a rear combination light group 103 and a rear through light 104. The rear combination light group 103 includes a left rear combination light 103a and a right rear combination light 103b, both of which are disposed at the rear of the vehicle. The rear through light 104 is disposed at the tailgate of the vehicle. The brightness control device 100 is electrically connected to the rear combination light group 103. Since the vehicle includes all embodiments of the aforementioned brightness control device 100, it possesses at least all the beneficial effects brought about by all the aforementioned embodiments, which will not be elaborated further here.

[0051] In one embodiment, the left rear combination light 103a and the right rear combination light 103b have the same area, and the area ratio of the rear through light 104 to both the left and right rear combination lights 103a and 103b is 3:1. The identical area of ​​the left and right rear combination lights 103a and 103b ensures consistent visual weight on both sides of the vehicle's rear, providing a sense of symmetry. Furthermore, the larger area of ​​the rear through light 104 enhances the overall harmony and aesthetics of the vehicle's appearance.

[0052] In one embodiment, the left rear combination light 103a, the right rear combination light 103b, and the rear through light 104 are each provided with a plurality of LEDs of equal number. By setting this structure, the consistency of brightness of each light under the current is ensured.

[0053] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A brightness control device for brightness control of a rear lamp of a vehicle, the rear lamp including a rear combination lamp group and a rear running lamp, the rear combination lamp group including a left rear combination lamp and a right rear combination lamp, the left rear combination lamp and the right rear combination lamp each being for being disposed at a rear portion of the vehicle, the rear running lamp being for being disposed at a tailgate of the vehicle, characterized in that, The application relates to a brightness control device for a rear combination lamp of a vehicle. The brightness control device comprises a control component, a linear constant current chip, a metal box body, and a switch circuit. The linear constant current chip comprises a first resistor, a second resistor and a third resistor, which are connected with the control component respectively. The first resistor, the second resistor and the third resistor are connected with the rear combination lamp group respectively. The rear combination lamp group is used for being electrically connected with the positive electrode of the power supply of the vehicle. The control component is used for being electrically connected with the negative electrode of the power supply of the vehicle. The metal box body is used for being installed on the vehicle. The control component and the linear constant current chip are arranged in the metal box body.

2. The luminance control device of claim 1, wherein The metal box body is internally provided with wave-shaped heat dissipation fins.

3. The luminance control device of claim 1, wherein The wave-shaped heat dissipation fins are arranged in a plurality of numbers.

4. The luminance control device of claim 3, wherein The wave-shaped heat dissipation fins are arranged in a spaced manner and cover the inner wall of the metal box body.

5. The luminance control device of claim 1, wherein The brightness control device has at least a first working state, a second working state and a third working state. When the tail door is closed, the brightness control device is in the first working state, and the first resistor is electrically connected with the control component.

6. The luminance control device of claim 1, wherein When the tail door is opened, the brightness control device is in the second working state, and the first resistor and the second resistor are electrically connected with the control component.

7. The luminance control device according to any one of claims 1 to 6, wherein When the vehicle is in braking, the brightness control device is in the third working state, and the first resistor, the second resistor and the third resistor are electrically connected with the control component. The wave-shaped heat dissipation fins and the linear constant current chip are filled with a heat-conducting silica gel layer. The metal box body is externally provided with a honeycomb-shaped heat dissipation hole. The bottom of the metal box body is provided with a mounting groove. The vehicle is internally provided with a protrusion which is clamped in the mounting groove. The vehicle further comprises a brake pedal and a tail door switch which is used for closing or opening the tail door. The control component comprises a mechanical relay which comprises a moving contact, a first contact breaker, a second contact breaker, a third contact breaker, a first static contact, a second static contact and a third static contact. The second contact breaker and the third contact breaker are hinged to the moving contact. The moving contact is used for being connected with the negative electrode of the power supply of the vehicle through a lead wire. The two ends of the first contact breaker are electrically connected with the moving contact and the first static contact respectively. The first resistor is electrically connected with the first static contact. The second resistor is electrically connected with the second static contact. The third resistor is electrically connected with the third static contact. The second contact breaker is used for being connected with the tail door switch. When the tail door is opened, the tail door switch drives the second contact breaker to be connected with the third static contact. When the tail door is closed, the tail door switch drives the second contact breaker to be separated from the third static contact. The brake pedal is used for being connected with the second contact breaker and the third contact breaker to drive the second contact breaker to be connected with or separated from the second static contact and the third contact breaker to be connected with or separated from the third static contact. The surfaces of the first resistor, the second resistor and the third resistor are covered with a ceramic heat dissipation coating. The brightness control device further comprises a switch circuit which is used for being connected in series between the rear combination lamp group and the power supply of the vehicle.

8. A vehicle characterized by comprising: The brightness control device comprises a tail lamp, a tail gate, a shell and the brightness control device of any one of claims 1-7, the tail gate is rotatably installed on the shell, the tail lamp comprises a rear combination lamp group and a rear running light, the rear combination lamp group comprises a left rear combination lamp and a right rear combination lamp, the left rear combination lamp and the right rear combination lamp are arranged at the tail of a vehicle, the rear running light is arranged on the tail gate of the vehicle, and the brightness control device is electrically connected with the rear combination lamp group.

9. The vehicle of claim 8, wherein, The left rear combination lamp and the right rear combination lamp have the same area, and the area ratio of the rear running light to the left rear combination lamp and the right rear combination lamp is 3:

1.

10. The vehicle of claim 9, wherein, A plurality of LEDs are arranged in the left rear combination lamp, the right rear combination lamp and the rear running light.

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