An anti-glare and dazzling headlight

Abstract

The present invention provides an anti-glare and dazzling headlight applied to the field of vehicle headlights, which includes a headlight housing and a heat dissipation housing. A lamp bead, a convex lens and a reflecting bowl are arranged in the headlight housing. A transparent layer is also fixed on the inner side of the reflecting bowl. A plurality of groups of electrochromic layers are arranged on the transparent layer. The symmetry axes of the cross-sections of the plurality of electrochromic layers all extend to intersect with the inner wall of the reflecting bowl, and the symmetry axis of the electrochromic layer is perpendicular to the tangent line at the intersection point of the inner wall of the reflecting bowl. The bottom end points of the cross-sections of the electrochromic layers and the top end points of the cross-sections of the adjacent electrochromic layers are located on the same horizontal line. The present invention is controlled by the circuit change of the electrochromic layer, with extremely rapid response, significantly improving the illumination intensity in the low-beam state, enhancing the safety of night driving, having market prospects and being suitable for popularization and application.

Description

Technical Field

[0001] This application relates to the field of vehicle lights, and particularly to an anti-glare and anti-dazzle vehicle light. Background Art

[0002] In the field of automotive lighting, anti-glare and anti-dazzle vehicle lights usually adopt mechanical high-low beam adjustment. By flipping a baffle through a mechanical structure to block the reflecting bowl, the switching between high and low beams is realized. This method has many drawbacks.

[0003] For example, mechanical structures are usually relatively complex with numerous components, which not only increases the production and assembly costs, but also easily fails during long-term use and requires frequent maintenance and repair. In addition, during the traditional high-low beam switching, when using the baffle to block the light for the high beam to low beam operation, the illumination intensity of the low beam decreases due to the baffle blocking, and the light intensity changes greatly.

[0004] When switching from high beam to low beam, the driver often experiences a brief vision loss due to the sudden change in light intensity. The specific reason is that the pupil of the eye is similar to the aperture of a camera and will automatically adjust its size according to the light intensity. In a strong light environment, the pupil will constrict to reduce the amount of light entering the eye and protect the retina from strong light stimulation. When suddenly switching to low beam, the pupil needs to gradually expand to allow more light to enter the eye so as to see the surrounding environment clearly. However, the adjustment of the pupil is not instantaneous and this process usually takes from a few seconds to more than ten seconds. Before the pupil fully adapts to the new light intensity, the amount of light entering the eye is insufficient, resulting in the driver's unclear vision, which poses a great safety hazard during night driving. In the low beam state, the illumination intensity is sometimes difficult to meet the driver's clear observation requirements for the road conditions ahead during high-speed driving, especially in situations such as oncoming vehicles, and the existing low beam lighting effect is not good, affecting driving safety.

[0005] Therefore, an anti-glare and anti-dazzle vehicle light is proposed. Summary of the Invention

[0006] The purpose of this application is to solve the technical problems of the existing mechanical high-low beam switching method, which has a complex structure, the illumination intensity decreases after switching to low beam, and there are potential hazards during night driving. Compared with the prior art, an anti-glare and anti-dazzle vehicle light is provided, including a vehicle light housing and a heat dissipation housing. A lamp bead, a convex lens and a reflecting bowl that cooperate with the lamp bead are arranged in the vehicle light housing. A transparent layer that fits against the inner wall of the reflecting bowl is also fixed on the inner side of the reflecting bowl, and several groups of electrochromic layers are arranged on the transparent layer;

[0007] The electrochromic layer close to the convex lens is arranged at the half of the transparent layer away from the convex lens, and the electrochromic layer far from the convex lens is arranged at the three-fourths of the transparent layer away from the convex lens. The symmetry axes of the cross-sections of several electrochromic layers all extend to intersect with the inner wall of the reflecting bowl, and the symmetry axis of the electrochromic layer is perpendicular to the tangent at the intersection point with the inner wall of the reflecting bowl. The bottom end points of the cross-sections of the electrochromic layer and the top end points of the cross-sections of the adjacent electrochromic layers are on the same horizontal line.

[0008] Further, the opening and closing of the electrochromic layer are controlled by a light sensor arranged on the vehicle body. The number of the light sensors is two groups, and the two groups of light sensors are respectively arranged at the headlight height position and the driver's eye height position.

[0009] Further, a plurality of outer heat dissipation fins are arranged on the outer wall of the heat dissipation housing at equal angular intervals. A main air duct corresponding to the outer heat dissipation fins one by one is arranged in the headlight housing. A cavity is arranged in the heat dissipation housing, and a heat dissipation mechanism is arranged in the cavity;

[0010] A through groove is arranged between the headlight housing and the heat dissipation housing. A circuit board matched with the lamp beads is arranged in the through groove. An assembly groove is arranged on the circuit board. The heat dissipation mechanism includes a heat conducting strip. The heat conducting strip is sleeved in the assembly groove in a wrapping manner. A sealing end cover for blocking the through groove is fixed on the outer side of the heat conducting strip. A heat conducting box is buckled on one side of the sealing end cover far from the through groove. The heat conducting box is used for wrapping the end of the circuit board. A wiring terminal for supplying power to the lamp beads is also arranged on the heat dissipation housing.

[0011] Further, the input end of the main air duct is arranged on the vehicle forward side, the output end of the main air duct is arranged at the outer heat dissipation fins, and a wind guiding plate is also fixed on the heat dissipation housing. The wind guiding plate is arranged on one side of the output end of the main air duct.

[0012] Further, the heat dissipation mechanism also includes a plurality of inner heat dissipation fins arranged at equal angular intervals. A heat conducting pad corresponding to the outer wall of the heat conducting box is arranged in the middle of the plurality of inner heat dissipation fins. The inner heat dissipation fins are arranged in the cavity of the heat dissipation housing. A through insertion groove is arranged between adjacent outer heat dissipation fins. One end of the inner heat dissipation fin far from the heat conducting pad passes through the insertion groove and extends to one side of the outer wall of the heat dissipation housing;

[0013] An air intake control mechanism for introducing external air into the cavity of the heat dissipation housing is arranged on one side of the heat dissipation housing far from the headlight housing.

[0014] Furthermore, the intake control mechanism includes a frustum-shaped cover. One end of the frustum-shaped cover is fixed with a rotating shaft. The end of the heat dissipation housing is provided with a connecting column corresponding to the intake control mechanism. A rotating groove matching the rotating shaft is provided in the middle of the connecting column. A number of helical grooves evenly distributed at equal angles are provided on the outer wall of the rotating shaft. A ball matching the helical groove is provided in the rotating groove;

[0015] The other end of the frustum-shaped cover is provided with a conical filter screen. A tension spring is clamped between the conical filter screen and the heat dissipation housing. A driving mechanism for driving the frustum-shaped cover to displace away from the heat dissipation housing is further provided in the connecting column. A number of outer holes evenly distributed at equal angles are further provided between the conical filter screen and the rotating shaft. Inner holes corresponding to the outer holes are provided on the connecting column;

[0016] A side air duct is further provided on one side of the output end of the main air duct of the heat dissipation housing.

[0017] Furthermore, the tension spring has an elastic force to drive the frustum-shaped cover to approach the connecting column. In the free state of the tension spring, the outer holes and the inner holes are staggered and closed;

[0018] The included angle between the output end direction of the main air duct and the output end direction of the side air duct is set to be an acute angle.

[0019] Furthermore, the driving mechanism includes an expansion bladder ring arranged in the connecting column. The expansion bladder ring is filled with thermally expandable particles. A number of heat conducting rods are further provided on the side of the expansion bladder ring away from the frustum-shaped cover. One ends of the heat conducting rods away from the expansion bladder ring extend into the cavity of the heat dissipation housing and are fixed with a heat conducting ring. The heat conducting ring abuts against the end of the inner heat dissipation fins.

[0020] Furthermore, an intake grille matching the conical filter screen is further provided on the heat dissipation housing. A fixing ring is fixed on one side of the intake grille. A number of elastic pieces are evenly fixed at equal angles on one side of the fixing ring. The elastic pieces have an elastic force to approach the conical filter screen. A cleaning brush is fixed at the end of the elastic piece away from the fixing ring.

[0021] Furthermore, the input end of the intake grille is connected with a three-way valve. The three-way valve has two groups of input ends. The two groups of input ends are respectively connected with the outside and the output end of the automotive air conditioner.

[0022] Compared with the prior art, the advantages of this application are as follows:

[0023] Compared with the traditional mechanical high-low beam adjustment method, the present invention is controlled by the circuit change of the electrochromic layer, with extremely rapid response, and can instantaneously switch between the transparent and silver states, quickly meeting the requirements for high and low beams of the vehicle in different driving scenarios.

[0024] Without increasing the power of the lamp, the present invention significantly improves the light intensity in the low-beam state through a unique design of the electrochromic layer, solving the problem that the driver cannot clearly observe the road conditions ahead of the vehicle due to insufficient low-beam light intensity during night-time high-speed oncoming vehicle encounters, significantly enhancing the safety of night-time driving, having market prospects, and being suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the present application;

[0026] Figure 2 is an exploded structural schematic diagram of the present application;

[0027] Figure 3 is an internal structural schematic diagram of the present application;

[0028] Figure 4 is a schematic diagram of the reflector bowl range when the electrochromic layer proposed in the present application is not turned on;

[0029] Figure 5 is a schematic diagram of the reflector bowl range when the electrochromic layer proposed in the present application is turned on;

[0030] Figure 6 is Figure 5 an enlarged structural schematic diagram of part A in

[0031] Figure 7 is a schematic diagram of the distribution of the electrochromic layer proposed in the present application;

[0032] Figure 8 is a front sectional structural schematic diagram of the present application;

[0033] Figure 9 is Figure 8 an enlarged structural schematic diagram of part B in

[0034] Figure 10 is an exploded structural schematic diagram of the heat dissipation mechanism proposed in the present application;

[0035] Figure 11 is a sectional structural schematic diagram of the heat dissipation housing proposed in the present application;

[0036] Figure 12 is Figure 11 an enlarged structural schematic diagram of part C in

[0037] Figure 13 is a structural schematic diagram of the intake control mechanism proposed in the present application;

[0038] Figure 14 is an exploded structural schematic diagram of the intake control mechanism proposed in the present application;

[0039] Figure 15 Schematic diagram of gas flow when the intake control mechanism proposed in this application is closed;

[0040] Figure 16 Schematic diagram of gas flow when the intake control mechanism proposed in this application is opened.

[0041] Description of reference numerals in the figure:

[0042] 1. Headlight housing; 11. Main air duct; 111. Side air duct; 2. Heat dissipation housing; 201. Air guide plate; 21. Outer heat dissipation fins; 22. Interpenetrating groove; 23. Through groove; 24. Intake grille; 25. Terminal; 26. Connecting column; 261. Inner hole; 262. Rotating groove; 27. Tension spring; 3. Convex lens; 31. Fitting ring; 4. Transparent layer; 41. Electrochromic layer; 5. Reflective bowl; 6. Lamp bead; 61. Circuit board; 611. Fitting groove; 7. Heat dissipation mechanism; 71. Inner heat dissipation fins; 711. Thermal pad; 72. Heat conducting strip; 73. Sealing end cover; 74. Heat conducting box; 8. Intake control mechanism; 81. Expansion bladder ring; 82. Heat conducting rod; 821. Heat conducting ring; 83. Frustum cover; 831. Rotating shaft; 832. Spiral groove; 834. Outer hole; 835. Conical filter screen; 84. Fixed ring; 841. Elastic piece; 842. Cleaning brush. Detailed implementation manners

[0043] The embodiments will describe the technical solutions of this application clearly and completely in conjunction with the accompanying drawings of the specification. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of this application.

[0044] Embodiment:

[0045] The present invention provides an anti-glare and dazzling headlight. Please refer to Figure 1 - Figure 16 , which includes a headlight housing 1 and a heat dissipation housing 2. A lamp bead 6, a convex lens 3 and a reflective bowl 5 that cooperate with the lamp bead 6 are provided in the headlight housing 1. The convex lens 3 is fixed to the end of the headlight housing 1 through a fitting ring 31. A transparent layer 4 that fits with the inner wall thereof is further fixed inside the reflective bowl 5. A plurality of groups of electrochromic layers 41 are provided on the transparent layer 4.

[0046] Specifically, in this embodiment, the electrochromic layer 41 is an electrochromic material prepared from tungsten oxide; when no electric field is applied, the electrochromic layer 41 absorbs less visible light and presents a nearly transparent state. At this time, the electrochromic layer 41 will not cause obvious interference to the light reflected by the reflective bowl 5 from the lamp bead 6, ensuring that the headlight can maintain good light transmittance and illumination intensity during normal lighting.

[0047] When a certain negative voltage is applied, lithium ions are embedded in the tungsten oxide lattice. As the amount of embedded lithium ions changes, the crystal structure and electronic state of the material change. At a specific embedding amount, the reflection characteristics of tungsten oxide for visible light are enhanced, and it can present a silver-like appearance and strongly reflect visible light. When the electric field is removed or the direction of the electric field is changed to cause the lithium ions to escape, tungsten oxide returns to its initial transparent state.

[0048] Please refer to Figure 4 , when the vehicle lamp is in normal use, the electrochromic layer 41 is in a transparent state, so it does not affect the reflection of the light of the lamp bead 6 by the reflecting bowl 5, ensuring the transparency intensity.

[0049] Please refer to Figure 5 - Figure 6 , when meeting an oncoming vehicle, the electrochromic layer 41 is electrified to turn silver. On the one hand, it blocks the light emitted from the upper half of the reflecting bowl 5 and switches to the low beam state, avoiding strong light stimulation to the eyes of the driver of the oncoming vehicle. On the other hand, through the reflection of the silver electrochromic layer 41, part of the light blocked on the upper half of the reflecting bowl 5 is re-injected into the lower half of the reflecting bowl 5, thereby improving the intensity of the low beam illumination without increasing the power, and avoiding the phenomenon that the driver cannot effectively observe the front of the vehicle due to the reduction of the illumination intensity of the low beam during the high-speed oncoming vehicle state.

[0050] Specifically, please refer to Figure 7 , in this embodiment, to avoid having no effective reflection path for the reflecting bowl 5 after the electrochromic layer 41 is activated, the electrochromic layer 41 closest to the convex lens 3 among several electrochromic layers 41 is located at half of the distance from the transparent layer 4 away from the convex lens 3, thereby allowing the lower half of the reflecting bowl 5 to reflect light. The electrochromic layer 41 farthest from the convex lens 3 among several electrochromic layers 41 is located at three-quarters of the distance from the transparent layer 4 away from the convex lens 3. To avoid light leakage on the upper half of the reflecting bowl 5 after the electrochromic layer 41 is activated, the symmetry axes of the cross-sections of several electrochromic layers 41 all extend and intersect with the inner wall of the reflecting bowl 5, and the tangent line at the intersection point of the symmetry axis of the electrochromic layer 41 and the inner wall of the reflecting bowl 5 is perpendicular. The tangent point of this tangent line coincides with the intersection point of the symmetry axis and the inner wall of the reflecting bowl 5. The bottom end point of the cross-section of the electrochromic layer 41 and the top end point of the cross-section of the adjacent electrochromic layer 41 are located on the same horizontal line.

[0051] It should be noted that the opening and closing of the electrochromic layer 41 are controlled by light sensors arranged on the vehicle body. The number of light sensors is two groups, and the two groups of light sensors are respectively arranged at the height position of the vehicle lamp and the height position of the driver's eyes. When the two groups of light sensors simultaneously detect the strong light emitted by the oncoming vehicle, the electrochromic layer 41 intermittently opens and closes, automatically achieving the purpose of switching between high and low beams, and reminding the oncoming vehicle to turn off the high beam. When the light sensor at the vehicle lamp detects strong light, that is, the tail light and the front headlight of the vehicle in front, and the light sensor at the height position of the driver's eyes does not detect strong light, that is, in the following vehicle state, the electrochromic layer 41 automatically turns on to prevent the strong light of the vehicle from irradiating the vehicle in front. When the two groups of light sensors do not detect strong light at the same time, the electrochromic layer 41 automatically turns off, realizing the automatic start of the high beam.

[0052] Compared with the traditional mechanical high and low beam adjustment method, the present application is controlled by the circuit change of the electrochromic layer 41, with a simple structure, sensitive response, and can effectively improve the illumination intensity in the low beam state without increasing the power. In the state of switching between high and low beams, there is no large difference in illumination intensity change, enabling the driver to quickly adapt to the light intensity change and not causing a short-term vision loss phenomenon due to the switch from strong light to low beam, thus improving the safety of night driving.

[0053] Furthermore, please refer to Figure 8 - Figure 16 , to improve the heat dissipation efficiency of the vehicle lamp during operation and extend the service life of the vehicle lamp, a plurality of outer heat dissipation fins 21 evenly arranged at equal angles are provided on the outer wall of the heat dissipation housing 2. A main air duct 11 corresponding to the outer heat dissipation fins 21 one by one is provided in the vehicle lamp housing 1. A cavity is provided in the heat dissipation housing 2, and a heat dissipation mechanism 7 is provided in the cavity;

[0054] A through groove 23 is provided between the vehicle lamp housing 1 and the heat dissipation housing 2. A circuit board 61 matched with the lamp beads 6 is provided in the through groove 23. An assembly groove 611 is provided on the circuit board 61. The heat dissipation mechanism 7 includes a heat conduction strip 72, and the heat conduction strip 72 is coated and sleeved in the assembly groove 611. To improve the connection sealing performance between the vehicle lamp housing 1 and the heat dissipation housing 2, prevent the water vapor in the heat dissipation housing 2 from entering the vehicle lamp housing 1 through the through groove 23, and effectively improve the waterproof performance of the lamp beads 6, a sealing end cover 73 for blocking the through groove 23 is fixed on the outer side of the heat conduction strip 72. A heat conduction box 74 is snap-fitted on the side of the sealing end cover 73 away from the through groove 23. The heat conduction box 74 is used to cover the end of the circuit board 61. A wiring terminal 25 for supplying power to the lamp beads 6 is also provided on the heat dissipation housing 2.

[0055] Specifically, the input end of the main air duct 11 is arranged on the forward side of the vehicle. Utilizing the wind force generated when the vehicle is moving forward, the main air duct 11 outputs wind force. The output end of the main air duct 11 is arranged at the external heat dissipation fins 21. To increase the air outlet speed at the output end of the main air duct 11, a wind guide plate 201 is also fixed on the heat dissipation housing 2. The wind guide plate 201 is arranged on one side of the output end of the main air duct 11. By using the wind guide plate 201, the cross-sectional area of the output end of the main air duct 11 is reduced, so as to increase the air outlet speed of the main air duct 11 and reduce the air outlet temperature, and improve the heat dissipation efficiency of the external heat dissipation fins 21.

[0056] Furthermore, please refer to Figure 8 - Figure 10 To improve the heat dissipation efficiency inside the heat dissipation housing 2, specifically to improve the heat dissipation effect on the main heat generating components such as the lamp beads 6 and the circuit board 61, the heat dissipation mechanism 7 further includes a number of internal heat dissipation fins 71 evenly arranged at equal angles. A heat conduction pad 711 corresponding to the outer wall of the heat conduction box 74 is provided in the middle of the number of internal heat dissipation fins 71. The internal heat dissipation fins 71 are arranged in the cavity of the heat dissipation housing 2. A through insertion groove 22 is provided between adjacent external heat dissipation fins 21. One end of the internal heat dissipation fin 71 away from the heat conduction pad 711 passes through the insertion groove 22 and extends to one side of the outer wall of the heat dissipation housing 2; on the side of the heat dissipation housing 2 away from the headlight housing 1, an air intake control mechanism 8 is provided for introducing external air into the inner cavity of the heat dissipation housing 2.

[0057] Please refer to Figure 11 - Figure 14 Among them, the air intake control mechanism 8 includes a frustum-shaped cover 83. One end of the frustum-shaped cover 83 is fixed with a rotating shaft 831. A connecting column 26 corresponding to the air intake control mechanism 8 is provided at the end of the heat dissipation housing 2. A rotating groove 262 matching the rotating shaft 831 is provided in the middle of the connecting column 26. A number of spiral grooves 832 evenly arranged at equal angles are provided on the outer wall of the rotating shaft 831. A ball matching the spiral grooves 832 is provided in the rotating groove 262;

[0058] The other end of the frustum-shaped cover 83 is provided with a conical filter net 835. A tension spring 27 is clamped between the conical filter net 835 and the heat dissipation housing 2. A driving mechanism for driving the frustum-shaped cover 83 to move away from the heat dissipation housing 2 is further provided in the connecting column 26. A number of external holes 834 evenly arranged at equal angles are provided between the conical filter net 835 and the rotating shaft 831. An internal hole 261 corresponding to the external holes 834 is provided on the connecting column 26;

[0059] A side air duct 111 is also provided on one side of the output end of the main air duct 11 of the heat dissipation housing 2.

[0060] Please refer to Figure 15, when the heat generated by the headlight operation is relatively low, the main air duct 11 is mainly used to dissipate heat from the external heat dissipation fins 21 and the internal heat dissipation fins 71 extending to the outside of the heat dissipation housing 2, thereby performing air-cooled heat dissipation on the heat dissipation housing 2 body and the inside of the heat dissipation housing 2.

[0061] Please refer to Figure 16 , when the heat generated by the headlight operation is relatively high, the air intake control mechanism 8 opens the connection state between the inner cavity of the heat dissipation housing 2 and the external air. At this time, the wind force generated by the main air duct 11 passes through the connection node between the side air duct 111 and the main air duct 11. Since the wind speed at the main air duct 11 is high, according to Bernoulli's principle, where the flow rate is large and the pressure is small, the pressure difference between the main air duct 11 and the side air duct 111 is utilized to suck the external cold air into the inner cavity of the heat dissipation housing 2 through the air intake control mechanism 8. After completing the heat exchange with the internal heat dissipation fins 71, it is discharged through the output end of the side air duct 111, further improving the heat dissipation efficiency of the internal heat dissipation fins 71.

[0062] Please refer to Figure 9 , the tension spring 27 has an elastic force that drives the frustum cover 83 close to the connecting column 26. In the free state of the tension spring 27, the outer hole 834 and the inner hole 261 are staggered and closed; the included angle between the output end direction of the main air duct 11 and the output end direction of the side air duct 111 is set to be an acute angle.

[0063] Furthermore, please refer to Figure 11 - Figure 14 , the driving mechanism includes an expansion bladder ring 81 arranged inside the connecting column 26. The expansion bladder ring 81 is filled with thermally expandable particles. Specifically, the thermally expandable particles are thermally expandable microspheres, which have a thermoplastic polymer as the shell material and a low-boiling organic solvent wrapped inside. When heated, the internal substance vaporizes and expands, causing the volume of the microspheres to increase. On the side of the expansion bladder ring 81 away from the frustum cover 83, there are also several heat conducting rods 82. One end of the several heat conducting rods 82 away from the expansion bladder ring 81 extends into the cavity of the heat dissipation housing 2 and is fixed with a heat conducting ring 821, and the heat conducting ring 821 abuts against the end of the internal heat dissipation fin 71.

[0064] The specific working principle of the air intake control mechanism 8 is that when the temperature inside the heat dissipation housing 2 is relatively low, the heat transferred from the internal heat dissipation fins 71 to the heat conducting ring 821 and the heat conducting rods 82 is relatively small. At this time, the expansion bladder ring 81 does not expand, and the frustum cover 83 uses the elastic force of the tension spring 27 to approach the connecting column 26. Using the guidance of the spiral groove 832 and the ball, the outer hole 834 and the inner hole 261 are staggered and in a closed state;

[0065] When the temperature inside the heat dissipation housing 2 is relatively high, the heat transferred from the internal heat dissipation fins 71 to the heat conduction ring 821 and the heat conduction rod 82 is relatively large. At this time, the expansion bladder ring 81 expands, and the frustum cover 83 uses the extrusion force generated by the expansion of the expansion bladder ring 81 to overcome the elastic force of the tension spring 27 and displace away from the connection column 26. During this process, using the guidance of the spiral groove 832 and the ball, the frustum cover 83 rotates as a whole, so that the outer hole 834 coincides with the inner hole 261 and is in an open state. At this time, the side air duct 111 can adsorb external air from the inner cavity of the heat dissipation housing 2 to dissipate heat from the internal heat dissipation fins 71.

[0066] Furthermore, an air intake grille 24 that cooperates with the conical filter screen 835 is also provided on the heat dissipation housing 2. A fixing ring 84 is fixed on one side of the air intake grille 24. A plurality of elastic pieces 841 are evenly fixed at equal angles on one side of the fixing ring 84. The elastic pieces 841 have an elastic force close to the conical filter screen 835. A cleaning brush 842 is fixed at one end of the elastic piece 841 away from the fixing ring 84. When the frustum cover 83 approaches the connection column 26 using the elastic force of the tension spring 27, the elastic piece 841 fits on the surface of the conical filter screen 835 using its own elastic force to protect the surface of the conical filter screen 835. When the frustum cover 83 displaces away from the connection column 26 using the extrusion force generated by the expansion of the expansion bladder ring 81, the cleaning brush 842 fits on the surface of the conical filter screen 835 using the elastic force of the elastic piece 841, and combined with the displacement of the frustum cover 83, the surface of the conical filter screen 835 is cleaned. Similarly, when the frustum cover 83 is reset using the elastic force of the tension spring 27, the cleaning brush 842 is used to clean the surface of the conical filter screen 835 again. Thus, during the start-up and reset of the frustum cover 83, the cleaning brush 842 is used to perform self-cleaning on the conical filter screen 835, avoiding blockage of the conical filter screen 835 and improving the service life of the conical filter screen 835.

[0067] It should be noted that in this embodiment, the input end of the air intake grille 24 is connected to a three-way valve. The three-way valve has two input ends, and the two input ends are respectively connected to the outside and the output end of the vehicle air conditioner. The input end of the three-way valve is controlled by a temperature sensor. Specifically, when the outside temperature is relatively high, the input end of the three-way valve is connected to the output end of the vehicle air conditioner. When the operating temperature of the vehicle lamp is relatively high, the air intake control mechanism 8 is opened, so that the main air duct 11 adsorbs cold air from the output end of the vehicle air conditioner through the side air duct 111. When the cold air contacts the relatively hot internal heat dissipation fins 71, condensed water is generated, and the internal heat dissipation fins 71 are efficiently dissipated by the evaporation of the condensed water. At this time, the air intake control mechanism 8 intermittently opens the input end of the three-way valve using the temperature changes of the expansion bladder ring 81 and the internal heat dissipation fins 71, reducing the consumption of cold air at the output end of the vehicle air conditioner while improving the heat dissipation efficiency of the internal heat dissipation fins 71.

[0068] Similarly, when the external temperature is relatively low, the input end of the three-way valve is connected to the outside. When the operating temperature of the vehicle lamp is relatively high, the intake control mechanism 8 is opened, enabling the main air duct 11 to adsorb cold air from the outside through the side air duct 111. When the cold air contacts the relatively hot inner heat dissipation fins 71, condensed water is generated, and the inner heat dissipation fins 71 are efficiently cooled by the evaporation of the condensed water. At this time, the intake control mechanism 8 uses the temperature changes of the expansion bladder ring 81 and the inner heat dissipation fins 71 to intermittently open the input end of the three-way valve, preventing the accumulation of condensed water and ice formation in the inner cavity of the heat dissipation housing 2 under extreme conditions, and improving the operating effect of the intake control mechanism 8 under low-temperature conditions.

[0069] Compared with the traditional mechanical high-low beam adjustment method, the present invention is controlled by the circuit change of the electrochromic layer 41, eliminating complex mechanical transmission components, simplifying the structure of the vehicle lamp, reducing the production and assembly costs of the vehicle lamp, and also reducing the maintenance and repair problems caused by mechanical failures. At the same time, the electrochromic layer 41 responds extremely quickly to the electric field and can instantaneously switch between the transparent and silver states, quickly meeting the requirements for high-low beams in different driving scenarios of the vehicle.

[0070] Without increasing the power of the lamp, the present invention significantly improves the illumination intensity in the low-beam state through the unique design of the electrochromic layer 41. When meeting an oncoming vehicle, the electrochromic layer 41 is energized to turn silver. On the one hand, it effectively blocks the light emitted from the upper half of the reflecting bowl 5, preventing the driver of the oncoming vehicle from being stimulated by strong light and ensuring driving safety. On the other hand, through the reflection of the silver electrochromic layer 41, part of the light blocked by the upper half of the reflecting bowl 5 is redirected to the lower half of the reflecting bowl 5, thereby significantly increasing the intensity of the low-beam illumination without changing the power of the lamp and reducing visual interference. This design effectively solves the problem that the driver cannot clearly observe the road conditions ahead of the vehicle due to insufficient low-beam illumination intensity during night-time highway oncoming vehicle meetings, significantly improving the safety of night-time driving.

[0071] As described above, the above is only the best implementation mode adopted by the present application in combination with the current actual needs, but the protection scope of the present application is not limited thereto.

Claims

1. An anti-glare and dazzling headlight, comprising a headlight housing (1) and a heat dissipation housing (2). A lamp bead (6), a convex lens (3) and a reflector bowl (5) that cooperate with the lamp bead (6) are provided inside the headlight housing (1). It is characterized in that, A transparent layer (4) that fits against the inner wall thereof is also fixed inside the reflecting bowl (5), and a plurality of groups of electrochromic layers (41) are provided on the transparent layer (4); The electrochromic layers (41) close to the convex lens (3) are arranged at the half of the transparent layer (4) far from the convex lens (3), and the electrochromic layers (41) far from the convex lens (3) are arranged at the three-fourths of the transparent layer (4) far from the convex lens (3). The symmetry axes of the cross-sections of the plurality of electrochromic layers (41) all extend to intersect with the inner wall of the reflecting bowl (5), and the symmetry axis of the electrochromic layer (41) is perpendicular to the tangent at the intersection point with the inner wall of the reflecting bowl (5). The bottom end points of the cross-sections of the electrochromic layer (41) and the top end points of the cross-sections of the adjacent electrochromic layers (41) are located on the same horizontal line.

2. The anti-glare and dazzling headlight according to claim 1, characterized in that, The opening and closing of the electrochromic layer (41) are controlled by light sensors provided on the vehicle body. The number of the light sensors is two groups, and the two groups of light sensors are respectively arranged at the headlight height position and the driver's eye height position.

3. The anti-glare and dazzling headlight according to claim 1, characterized in that, A plurality of outer heat dissipation fins (21) evenly arranged at equal angles are provided on the outer wall of the heat dissipation housing (2). A main air duct (11) corresponding to the outer heat dissipation fins (21) one by one is provided inside the headlight housing (1). A cavity is provided inside the heat dissipation housing (2), and a heat dissipation mechanism (7) is provided inside the cavity; A through groove (23) is provided between the headlight housing (1) and the heat dissipation housing (2). A circuit board (61) matched with the lamp beads (6) is provided inside the through groove (23). An assembly groove (611) is provided on the circuit board (61). The heat dissipation mechanism (7) includes a heat conduction strip (72). The heat conduction strip (72) is sleeved and wrapped inside the assembly groove (611). A sealing end cover (73) for blocking the through groove (23) is fixed on the outer side of the heat conduction strip (72). A heat conduction box (74) is buckled on the side of the sealing end cover (73) far from the through groove (23). The heat conduction box (74) is used for wrapping the end of the circuit board (61). A wiring terminal (25) for supplying power to the lamp beads (6) is also provided on the heat dissipation housing (2).

4. The anti-glare and dazzling headlight according to claim 3, characterized in that, The input end of the main air duct (11) is arranged on the vehicle forward side, and the output end of the main air duct (11) is arranged at the outer heat dissipation fins (21). A wind guiding plate (201) is also fixed on the heat dissipation housing (2), and the wind guiding plate (201) is arranged on one side of the output end of the main air duct (11).

5. The anti-glare and dazzle headlamp according to claim 3, wherein The heat dissipation mechanism (7) further includes a plurality of inner heat dissipation fins (71) evenly arranged at equal angles. A heat conduction pad (711) corresponding to the outer wall of the heat conduction box (74) is provided in the middle of the plurality of inner heat dissipation fins (71). The inner heat dissipation fins (71) are arranged inside the cavity of the heat dissipation housing (2). A through insertion groove (22) is provided between the adjacent outer heat dissipation fins (21). One end of the inner heat dissipation fin (71) far from the heat conduction pad (711) passes through the insertion groove (22) and extends to one side of the outer wall of the heat dissipation housing (2); On one side of the heat dissipation housing (2) away from the headlight housing (1), there is an air intake control mechanism (8) for guiding external air into the inner cavity of the heat dissipation housing (2).

6. The anti-glare and dazzling headlight according to claim 5, wherein, The air intake control mechanism (8) includes a frustum-shaped cover (83). One end of the frustum-shaped cover (83) is fixed with a rotating shaft (831). At the end of the heat dissipation housing (2), there is a connecting column (26) corresponding to the air intake control mechanism (8). In the middle of the connecting column (26), there is a rotating groove (262) matching the rotating shaft (831). On the outer wall of the rotating shaft (831), there are several helical grooves (832) evenly distributed at equal angles. In the rotating groove (262), there are balls matching the helical grooves (832). At the other end of the frustum-shaped cover (83), there is a conical filter screen (835). A tension spring (27) is clamped between the conical filter screen (835) and the heat dissipation housing (2). Inside the connecting column (26), there is also a driving mechanism for driving the frustum-shaped cover (83) to displace away from the heat dissipation housing (2). Between the conical filter screen (835) and the rotating shaft (831), there are also several outer holes (834) evenly distributed at equal angles. On the connecting column (26), there is an inner hole (261) corresponding to the outer holes (834). On one side of the output end of the main air duct (11) of the heat dissipation housing (2), there is also a side air duct (111).

7. The anti-glare and dazzling headlight according to claim 6, characterized in that, The tension spring (27) has an elastic force to drive the frustum-shaped cover (83) to approach the connecting column (26). In the free state of the tension spring (27), the outer holes (834) and the inner holes (261) are staggered and in a closed state. The angle between the output end direction of the main air duct (11) and the output end direction of the side air duct (111) is set to be an acute angle.

8. The anti-glare and dazzling headlamp according to claim 6, wherein, The driving mechanism includes an expansion bladder ring (81) arranged inside the connecting column (26). The expansion bladder ring (81) is filled with thermally expandable particles. On the side of the expansion bladder ring (81) away from the frustum-shaped cover (83), there are also several heat conducting rods (82). One end of several heat conducting rods (82) away from the expansion bladder ring (81) extends into the cavity of the heat dissipation housing (2) and is fixed with a heat conducting ring (821). The heat conducting ring (821) abuts against the end of the inner heat dissipation fin (71).

9. The anti-glare and dazzling headlight according to claim 6, wherein, On the heat dissipation housing (2), there is also an air intake grille (24) matching the conical filter screen (835). One side of the air intake grille (24) is fixed with a fixing ring (84). On one side of the fixing ring (84), several elastic pieces (841) are evenly fixed at equal angles. The elastic pieces (841) have an elastic force to approach the conical filter screen (835). One end of the elastic piece (841) away from the fixing ring (84) is fixed with a cleaning brush (842).

10. The anti-glare and dazzling headlight according to claim 9, characterized in that, The input end of the air intake grille (24) is connected with a three-way valve. The three-way valve has two groups of input ends, and the two groups of input ends are respectively connected with the outside and the output end of the vehicle air conditioner.

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