LED distributed parallel light front lamp

Abstract

The application discloses an LED distributed parallel light front lamp, which comprises a shell, an installation groove communicated with an inner cavity of the shell is formed in the front top side of the shell, and a light-transmitting groove penetrating from top to bottom is formed in the middle of the inner cavity of the shell; an LED heat dissipation substrate is detachably arranged in the inner cavity of the installation groove; and a plurality of low-power LED light sources are equidistantly and detachably arranged on the bottom end of the LED heat dissipation substrate along the left-right direction. The device adopts the LED heat dissipation technology to break the problems of the existing high-power LED vehicle lamp, such as difficult heat dissipation, large light decay, low light source utilization rate, large volume, high cost and the like, has high production efficiency, low cost, flexible application, can conveniently change the illumination mode of the light source at will, can adjust the illumination range of the light source according to actual conditions, eliminates the safety hidden trouble, and has wide application prospect.

Description

Technical Field

[0001] This invention relates to the field of motor vehicle lighting technology, specifically to an LED distributed parallel light headlight. Background Technology

[0002] Headlights are lighting devices mounted on both sides of the front of a car for nighttime driving. They are available in two-lamp and four-lamp systems. The illumination effect of headlights directly affects driving operation and traffic safety at night. Therefore, traffic management departments in various countries generally stipulate headlight illumination standards by law to ensure nighttime driving safety.

[0003] It should have an anti-glare device to prevent the driver of the oncoming car from being dazzled when the two vehicles meet at night, thus avoiding traffic accidents. When the two vehicles meet at night, the beam should be tilted downwards to avoid dazzling the driver of the oncoming vehicle.

[0004] Currently, the development of vehicle lighting in China is quite mature, and market competition is fierce. Most headlights using high-power LED light sources require multiple transmissions through different lens groups or the use of large-area reflectors to achieve precise lighting requirements. This results in low light source utilization efficiency, the need for additional heat dissipation devices, large size, and high cost. Furthermore, traditional automotive headlights typically require multiple LED lights to control the high beam and low beam separately, leading to resource waste. In addition, traditional automotive headlights cannot adjust the low beam's illumination range according to the driver's vision, which can easily result in either an excessively low low beam illumination range, affecting the driver's vision and causing dangerous driving, or an excessively high low beam illumination range, affecting the vision of oncoming drivers and causing dangerous driving. These issues pose safety hazards and are inconvenient to use. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as large size, high cost, and the need for multiple LEDs to control the high beam and low beam of a car, which poses safety hazards. Therefore, this invention proposes an LED distributed parallel light headlight.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An LED distributed parallel light headlight includes: a housing, wherein a mounting groove communicating with its inner cavity is formed on the front side of the top of the housing, and a light-transmitting groove extending vertically through the middle of the inner cavity of the housing; an LED heat dissipation substrate, which is detachably disposed in the inner cavity of the mounting groove; a plurality of low-power LED light sources, which are detachably disposed at equal intervals along the left-right direction at the bottom end of the LED heat dissipation substrate; a TR microlens array, the top of which is disposed at the bottom end of the LED heat dissipation substrate, and the low-power LED light sources are disposed in the inner cavity of the TR microlens array; and a face mask detachably disposed on the front side of the housing.

[0008] Furthermore, in order to ensure that the light source can be emitted in parallel, the inner cavity of the housing is provided with: two guide rods, which are respectively located at the top left and right sides of the inner cavity of the housing; a spring sleeved on the rear side of the outer wall of the guide rod, with the rear end of the spring engaged with the rear end of the guide rod; a slider slidably sleeved on the front side of the outer wall of the guide rod, with the front end of the spring engaged with the rear side of the slider; and the top left and right sides of the reflector respectively located inside the two sliders.

[0009] Furthermore, in order to cause the reflector to move to the rear, the inner cavity of the housing is also provided with: an iron block, which is located at the rear top of the reflector; an electromagnet, which is located at the rear top of the inner cavity of the housing; and an adjustment mechanism, which is located at the bottom of the inner cavity of the housing.

[0010] Furthermore, the adjustment mechanism includes: a motor, the motor being screwed to the bottom of the inner cavity of the housing; the left end of the connecting rod being locked to the output end of the motor via a coupling, and the other end of the connecting rod being rotatably disposed at the bottom right side of the inner cavity of the housing via a bearing; and a drive pulley being sleeved on the outer wall of the connecting rod and locked.

[0011] Furthermore, in order to cause the device to emit a downward-tilting light source and adjust the downward tilt angle of the light source, the adjustment mechanism further includes: a rotating rod, the left and right ends of which are rotatably disposed on the bottom ends of the left and right sides of the inner cavity of the housing via bearings; a reflector fixedly sleeved on the outer wall of the rotating rod; a driven pulley sleeved on the right side of the outer wall of the rotating rod and locked; and the two ends of the belt sleeved on the outer walls of the driving pulley and the driven pulley, respectively.

[0012] Furthermore, the position of the light-transmitting groove corresponds to the positions of the low-power LED light source, the reflector, and the reflector plate.

[0013] Furthermore, the tilt angle of the reflector is 45 degrees, and the tilt angle of the reflector is always greater than 45 degrees.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The present invention uses a low-power LED light source and an LED heat dissipation substrate in direct contact to dissipate heat from the low-power LED light source. Thus, when the low-power LED light source is working, its heat can be effectively dissipated through the LED heat dissipation substrate without the need for an additional heat dissipation device, ensuring that the light decay of the low-power LED light source is small.

[0016] (2) The present invention uses a TR microlens array to reflect the light emitted by a low-power LED light source, so that the light source can be emitted in the form of parallel light, and uses a reflector to reflect the parallel light.

[0017] (3) In this invention, an electromagnet attracts an iron block to move the reflector backward, which allows the light-transmitting groove and reflector to be exposed. The reflector reflects the light source, causing the light source to tilt downward. The motor, through the connecting rod and the active pulley, drives the rotating rod to rotate, thereby adjusting the tilt angle of the reflector and thus adjusting the downward tilt angle of the light source.

[0018] (4) This device has a simple structure and uses LED heat dissipation technology to overcome the problems of heat dissipation difficulties, large light decay, low light source utilization, large size and high cost of existing high-power LED vehicle lights. This makes the product structure more compact and small, with high light efficiency, high production efficiency, low cost and flexible application. It can also easily switch the illumination mode of the light source and adjust the illumination range of the light source according to the actual situation, eliminating safety hazards and having broad application prospects. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is an exploded view of the present invention;

[0022] Figure 3 This is a schematic diagram of the high beam status of the present invention;

[0023] Figure 4 This is a schematic diagram of the low beam headlight state according to the present invention;

[0024] Figure 5 This is an enlarged view of point A in the present invention;

[0025] Figure 6 This is an enlarged view of section B of the present invention.

[0026] The components represented by each number in the diagram are listed below: 1. Housing; 2. Mounting slot; 3. Light transmission slot; 4. LED heat dissipation substrate; 5. Low-power LED light source; 6. TR microlens array; 7. Guide rod; 8. Spring; 9. Adjustment mechanism; 91. Motor; 92. Connecting rod; 93. Drive pulley; 94. Rotating rod; 95. Driven pulley; 96. Reflector; 97. Belt; 10. Reflector; 11. Slider; 12. Iron block; 13. Electromagnet; 14. Face mask. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Reference Figure 1-6A distributed parallel light LED headlight includes: a housing 1, a mounting groove 2, a light-transmitting groove 3, an LED heat sink substrate 4, a low-power LED light source 5, a TR microlens array 6, a guide rod 7, a spring 8, an adjustment mechanism 9, a reflector 10, a slider 11, an iron block 12, an electromagnet 13, and a faceplate 14. The housing 1 has a mounting groove 2 communicating with its inner cavity on its top front side. A light-transmitting groove 3 penetrating vertically is formed in the middle of the inner cavity of the housing 1. The LED heat sink substrate 4 is detachably disposed within the inner cavity of the mounting groove 2. The LED heat sink substrate 4 is a conventional PCB aluminum substrate, used here for... Heat dissipation is provided for the low-power LED light source 5. Several low-power LED light sources 5 are detachably and equidistantly positioned at the bottom of the LED heat dissipation substrate 4 along the left-right direction. The low-power LED light sources 5 are low-power LED light-emitting diodes, characterized by low heat generation, and are used to emit light. The top of the TR microlens array 6 is located at the bottom of the LED heat dissipation substrate 4, and the low-power LED light sources 5 are disposed within the inner cavity of the TR microlens array 6. The TR microlens array 6 is composed of miniature collimating lenses, with one low-power LED light source 5 corresponding to one LED light source. The TR microlens array has 6 units, each independently designed according to light distribution requirements, resulting in high light conversion efficiency. Two guide rods 7 are positioned at the top left and right sides of the inner cavity of the housing 1. A spring 8 is sleeved on the rear side of the outer wall of the guide rod 7, with its rear end engaged with the rear end of the guide rod 7. The spring 8 is a rotary spring; it undergoes elastic deformation under external pressure or tension and returns to its initial state after the external force is removed. The spring 8 is used to push the reflector 10 forward. A slider 11 is slidably sleeved on the front side of the outer wall of the guide rod 7, with the front end of the spring 8 engaged with the slider 11. On the rear side of 1, the top of the left and right sides of the reflector 10 are respectively set inside the two sliders 11. The surface of the reflector 10 is vacuum-plated aluminum. The reflector 10 is used to reflect light. The iron block 12 is set at the top of the rear side of the reflector 10. The electromagnet 13 is set at the top of the rear side of the inner cavity of the housing 1. The electromagnet 13 is existing technology. The electromagnet 13 is used to attract the iron block 12 to drive the reflector 10 to move backward. The adjustment mechanism 9 is set at the bottom of the inner cavity of the housing 1. The adjustment mechanism 9 is used to adjust the height and range of the light source tilting. The mask 14 is detachably set on the front side of the housing 1.

[0030] Specifically, the adjusting mechanism 9 includes: a motor 91, a connecting rod 92, a driving pulley 93, a rotating rod 94, a driven pulley 95, a reflector 96, and a belt 97. The motor 91 is screwed to the bottom of the inner cavity of the housing 1. The motor 91 is existing technology and is used to drive the connecting rod 92 to rotate. The left end of the connecting rod 92 is locked to the output end of the motor 91 by a coupling. The other end of the connecting rod 92 is rotatably disposed at the bottom right side of the inner cavity of the housing 1 by a bearing. The driving pulley 93 is sleeved on the connecting rod 94. The outer wall of the rod 92 is locked. The left and right ends of the rotating rod 94 are rotatably mounted on the bottom of the left and right sides of the inner cavity of the housing 1 through bearings. The rotating rod 94 is used to drive the reflector 96 to rotate, thereby adjusting the tilt angle of the reflector 96. The reflector 96 is fixedly sleeved on the outer wall of the rotating rod 94. The surface of the reflector 96 is vacuum-plated aluminum. The driven pulley 95 is sleeved on the right side of the outer wall of the rotating rod 94 and locked. The two ends of the belt 97 are respectively sleeved on the outer walls of the driving pulley 93 and the driven pulley 95.

[0031] Specifically, the position of the light-transmitting groove 3 corresponds to the positions of the low-power LED light source 5, the reflector 10, and the reflector 96, ensuring that the light source can shine through the light-transmitting groove 3 onto the reflector 96.

[0032] Specifically, the reflector 10 is tilted at 45 degrees to ensure that the light source can be emitted horizontally, and the tilt angle of the reflector 96 is always greater than 45 degrees to prevent the light source from shining too high.

[0033] In this invention, a low-power LED light source 5 is activated. The light emitted by the low-power LED light source 5 is reflected by a TR microlens array 6, causing the light source to emit parallel downwards. The parallel downward-emitting light illuminates the surface of the reflector 10. Since the reflector 10 is tilted at 45 degrees, and according to the principle that the angle of incidence equals the angle of reflection, it can be ensured that the parallel light rays are reflected by the reflector 10 and emitted horizontally to illuminate the area. The LED heat dissipation substrate 4 can dissipate heat from the low-power LED light source 5. When it is necessary to change to a low beam, the electromagnet 13 is activated. The electromagnet 13 attracts the iron block 12, which moves the reflector 10 backwards until the reflector 10 moves to a suitable position. At this time, the light transmission groove 3 is exposed, and the light from the low-power LED light source 5 shines through the light transmission groove 3 onto the surface of the reflector 96. Since the surface tilt angle of the reflector 96 is greater than 45 degrees, it can cause the light to be emitted obliquely downwards, thereby preventing interference. To adjust the height and range of the low beam headlights for the driver's line of sight, the starter motor 91 drives the drive pulley 93 to rotate via the connecting rod 92. The rotation of the drive pulley 93 drives the rotating rod 94 to rotate via the belt 97 and the driven pulley 95. The rotation of the rotating rod 94 drives the reflector 96 to rotate, thereby adjusting the tilt angle of the reflector 96 and thus adjusting the height of the low beam headlights and the driver's line of sight, achieving the most comfortable state for the driver. This device has a simple structure and uses LED heat dissipation technology to overcome the problems of heat dissipation difficulties, large light decay, low light source utilization, large size, and high cost of existing high-power LED vehicle lights. This makes the product structure more compact and small, with high light efficiency, high production efficiency, low cost, and flexible application. It can also easily switch the illumination mode of the light source and adjust the illumination range of the light source according to the actual situation, eliminating safety hazards and having broad application prospects.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An LED distributed parallel light headlight, characterized in that, include: The housing (1) has an installation groove (2) connected to its inner cavity on the front side of the top end of the housing (1), and a light-transmitting groove (3) that runs through the middle of the inner cavity of the housing (1). LED heat dissipation substrate (4), which is detachably disposed in the inner cavity of the mounting groove (2); The number of low-power LED light sources (5) is several, and the several low-power LED light sources (5) are detachably disposed at the bottom end of the LED heat sink substrate (4) at equal intervals along the left and right directions. TR microlens array (6), the top of the TR microlens array (6) is disposed at the bottom of the LED heat sink substrate (4), and the low power LED light source (5) is disposed in the inner cavity of the TR microlens array (6); A face mask (14) is detachably mounted on the front side of the housing (1); Guide rod (7), there are two guide rods (7), and the two guide rods (7) are respectively set at the top of the left and right sides of the inner cavity of the housing (1); Spring (8), the spring (8) is sleeved on the rear side of the outer wall of the guide rod (7), and the rear end of the spring (8) is snapped into the rear end of the guide rod (7); The slider (11) is slidably sleeved on the front side of the outer wall of the guide rod (7), and the front end of the spring (8) is engaged with the rear side of the slider (11). The reflector (10) has its top left and right sides respectively located inside the two sliders (11); Iron block (12), said iron block (12) is disposed at the rear top of reflector (10); Electromagnet (13), wherein the electromagnet (13) is disposed at the top rear side of the inner cavity of the housing (1); Adjustment mechanism (9) is located at the bottom of the inner cavity of housing (1).

2. The LED distributed parallel light headlight according to claim 1, characterized in that, The adjustment mechanism (9) includes: Motor (91), which is screwed to the bottom of the inner cavity of housing (1); The left end of the connecting rod (92) is locked to the output end of the motor (91) by a coupling, and the other end of the connecting rod (92) is rotatably disposed at the bottom right side of the inner cavity of the housing (1) by a bearing; The active pulley (93) is sleeved on the outer wall of the connecting rod (92) and locked.

3. The LED distributed parallel light headlight according to claim 2, characterized in that, The adjustment mechanism (9) further includes: The rotating rod (94) is rotatably mounted on the bottom of the left and right sides of the inner cavity of the housing (1) via bearings at its left and right ends respectively. A reflector (96) is fixedly sleeved on the outer wall of a rotating rod (94); Driven pulley (95), the driven pulley (95) is sleeved on the right side of the outer wall of the rotating rod (94) and locked; A belt (97) is fitted at both ends onto the outer walls of the driving pulley (93) and the driven pulley (95), respectively.

4. The LED distributed parallel light headlight according to claim 3, characterized in that, The position of the light-transmitting groove (3) corresponds to the positions of the low-power LED light source (5), the reflector (10), and the reflector plate (96).

5. The LED distributed parallel light headlight according to claim 4, characterized in that, The reflector (10) has a tilt angle of 45 degrees, and the reflector plate (96) always has a tilt angle greater than 45 degrees.

Images