Front fog lamp

Abstract

The invention relates to the technical field of automobile fog lamps and discloses a front fog lamp which comprises a shell, a heat dissipation support, a broadening light source plate, a main lamp light source plate, a lens module and a reflecting cover, a plurality of annular curved surface lenses are arranged on the lens module, and the reflecting cover comprises an upper reflecting part and a lower reflecting part. The upper reflecting part is provided with an open hole and a window, the open hole is used for the annular curved-surface lens to extend out and is matched with the annular curved-surface lens in shape, the window is used for fog lamp light emitted by the main lamp light source plate to penetrate through, and the lower reflecting part is used for outwards reflecting the fog lamp light emitted by the main lamp light source plate. According to the fog lamp, the broadening light source plate and the main lamp light source plate are arranged in a compact space in a layered mode, basic lighting and broadening light distribution functions are integrated through structural cooperation of the heat dissipation support and the reflecting cover, the broadening light source plate and the main lamp light source plate are complementary through optical division, and the light distribution effect is improved. Finally, the double high requirements of light spot uniformity and width under the F3-level standard are met, and the bottleneck that an existing fog lamp is difficult to meet the F3-level light distribution standard is broken through.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive fog lights, and particularly to a front fog light. Background Art

[0002] As an automotive lighting functional lamp, the front fog light of an automobile is mainly used to improve the lighting of the road under harsh weather conditions with low visibility such as fog, snow, rain or dust. The front fog light can not only warn pedestrians, but also play a lighting role, which is crucial for improving the active safety of the vehicle. Therefore, the design of the front fog light of an automobile is an important research and development field in the design of automotive lamps. Traditional front fog lights generally use H1 bulbs or H3 bulbs as light sources. Due to high light source radiation and low efficiency, a large amount of energy is consumed and environmental pollution is caused, which can no longer meet the requirements of the automobile for energy conservation and environmental protection of the lighting system.

[0003] In recent years, with the improvement of the luminous efficiency of LEDs, the increase in the requirements for device reliability in automotive lighting, and the maturity of LED packaging technology, the emergence of high-power chips and multi-chips has well met the high-power requirements of automotive lighting. Therefore, LEDs will gradually replace traditional halogen bulbs as the new generation of light sources used in automotive lighting. The luminous flux and light distribution performance of the front fog light of an automobile directly affect the safety of vehicles and pedestrians. The luminous flux of the light source represents the luminous ability of the light source and is an important indicator for evaluating the energy efficiency of the light source, which is very important for product quality control. The installation position of the front fog light of an automobile is relatively low, and the brightness required by regulations is very high. The emitted light can well make up for the dark areas that the low beam and high beam cannot illuminate in front of the vehicle. At the same time, more and more front fog lights undertake the auxiliary function of turning, that is, when turning, the front fog light is turned on to illuminate the blind area of the field of vision. All in all, the front fog light can not only improve the driving safety of the driver and avoid traffic accidents in bad weather such as fog, but also warn pedestrians and play a lighting role.

[0004] The light distribution standard of vehicle lamps mainly uses digital quantification to represent the lighting effect of vehicle lamps and is analyzed according to regulatory standards. The current standard adopted in China is the "Light Distribution Performance of Front Fog Lamps for Motor Vehicles" (GB4660-2016) issued in 2016. The front fog light standard stipulates that the light distribution beam of the front fog light should produce a pair of symmetrical and generally horizontal cut-off lines of light and dark within a width exceeding 5 on both sides of the V-V line on the aiming screen for visual vertical adjustment. Its light distribution performance should be within the effective area of illuminance measurement on the light distribution screen at a distance of 25 m in front of the reference center of the front fog light and should be included within a square with a side length of 65 mm.

[0005] In the regulations, there are Class B standards and the highest-level F3 standards. The light distribution diagram of the F3-class front fog light in the regulations is as Figure 8As shown in the figure. Compared with the B-level standard, the measurement range area of the F3-level front fog lamp is refined to points and lines, with a wider and more detailed requirement. After testing, the fog lamps currently on the market cannot meet the light distribution performance requirements of the front fog part of the F3 level. The main reason is that the light beam broadening ability of the light distribution of the front fog lamp is poor, and it is difficult to meet the requirements of ±22° for the horizontal positions at the left and right ends of line segment 8, let alone meet the requirements of ±35° for the horizontal positions at the left and right ends of line segment 9.

[0006] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0007] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present invention is to provide a front fog lamp, aiming to improve the light broadening ability of the front fog lamp and make the light distribution performance of the front fog lamp meet the F3-level standard.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] A front fog lamp, comprising a housing, a heat dissipation bracket arranged in the housing, a broadening light source board arranged on the front end face of the heat dissipation bracket, a main light source board arranged on the bottom face of the heat dissipation bracket, a lens module arranged in front of the broadening light source board, and a reflector located in front of the heat dissipation bracket. A plurality of toric lenses are arranged on the lens module, and the same number of first LED chip beads corresponding one-to-one to the toric lenses are arranged on the broadening light source board. The reflector includes an upper reflection part and a lower reflection part. The upper reflection part is provided with an opening for the toric lens to protrude and having a shape adapted to the toric lens, and a window for the fog light rays emitted by the main light source board to pass through. The lower reflection part is used to reflect the fog light rays emitted by the main light source board outward.

[0010] As a further improvement of the above technical solution, the convex part of the toric lens is in the form of an elliptical ring convex texture.

[0011] As a further improvement of the above technical solution, the distance between the light-emitting center of the first LED chip bead and the focal point of the toric lens is within ±1 mm.

[0012] As a further improvement of the above technical solution, the outer edge of the opening is chamfered and expanded.

[0013] As a further improvement of the above technical solution, six toric lenses are arranged and are arranged in a triangular pattern.

[0014] As a further improvement of the above technical solution, the lower reflection part is semi-circular in the front view projection and is composed of multiple free optical surfaces; at least one second LED chip bead facing the free optical surface is provided on the main light source board.

[0015] As a further improvement of the above technical solution, a light suppression depression is provided on the lower reflection part.

[0016] As a further improvement of the above technical solution, an annular border is provided on the reflector, and convex textures are continuously arranged on the inner circumferential surface of the annular border.

[0017] As a further improvement of the above technical solution, a lens is provided at the front end of the housing, and a plurality of mounting lugs are provided on the outer circumferential surface of the housing.

[0018] As a further improvement of the above technical solution, a power driving board is provided on the heat dissipation bracket, and an electrical connector is provided on the housing.

[0019] The beneficial effects of the present invention: The fog lamp provided by the present invention has a layered layout configuration of a width expansion light source board and a main light source board in a compact space. Through the structural cooperation of the heat dissipation bracket and the reflector, the basic lighting and width expansion light distribution functions are integrated into one. The width expansion light source board and the main light source board are optically divided and complementary to each other, and finally the dual high requirements of spot uniformity and width under the F3 standard are achieved, breaking through the bottleneck that existing fog lamps are difficult to meet the F3 light distribution standard. Description of the Drawings

[0020] Figure 1 is a three-dimensional view of the front fog lamp provided by the present invention Figure 1 .

[0021] Figure 2 is a three-dimensional view of the front fog lamp provided by the present invention Figure 2 .

[0022] Figure 3 is a three-dimensional view of the lens module and the width expansion light source board on the heat dissipation bracket.

[0023] Figure 4 is a schematic diagram of the width expansion light source board and the main light source board mounted on the heat dissipation bracket.

[0024] Figure 5 is a cross-sectional view of the front fog lamp provided by the present invention.

[0025] Figure 6 is a schematic diagram of the front fog lamp structure of Embodiment 1.

[0026] Figure 7 is a schematic diagram of the front fog lamp structure of Embodiment 2.

[0027] Figure 8 is an F3-class front fog lamp light distribution screen.

[0028] Figure 9 is a simulated luminous intensity light pattern diagram of the front fog lamp provided by the present invention, and the horizontal grid divides a region with an increment unit of 10°.

[0029] Description of main component symbols: 1 - housing, 11 - mounting lugs, 12 - electrical connector, 13 - power drive board, 2 - heat dissipation bracket, 3 - widened light source board, 31 - first LED surface mount lamp beads, 4 - main light source board, 41 - second LED surface mount lamp beads, 5 - lens module, 51 - toric lens, 6 - reflector, 61 - opening, 610 - chamfer, 62 - upper reflecting part, 63 - lower reflecting part, 631 - free optical surface, 632 - light suppression depression, 64 - annular border, 641 - raised texture, 65 - window, 7 - lens. Detailed implementation manners

[0030] The present invention provides a front fog lamp. To make the objectives, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0031] Please refer to Figures 1 to 5 , the present invention provides a front fog lamp, including a housing 1, a heat dissipation bracket 2 arranged in the housing 1, a widened light source board 3 arranged on the front end surface of the heat dissipation bracket 2, a main light source board 4 arranged on the bottom surface of the heat dissipation bracket 2, a lens module 5 arranged in front of the widened light source board 3, and a reflector 6 located in front of the heat dissipation bracket 2. A plurality of toric lenses 51 are arranged on the lens module 5. First LED surface mount lamp beads 31 with the same number as and corresponding to the toric lenses 51 one by one are arranged on the widened light source board 3. The reflector 6 includes an upper reflecting part 62 and a lower reflecting part 63. An opening 61 for the toric lens 51 to extend out and having a shape adapted to the toric lens 51 is provided on the upper reflecting part 62, and a window 65 for the fog light rays emitted by the main light source board 4 to pass through is provided. The lower reflecting part 63 is used for reflecting the fog light rays emitted by the main light source board 4 outwards.

[0032] When the current front fog lamp is working, the light broadening light source board 3 and the main light source board 4 complement each other through spatial layout and optical division of labor: The main light source board 4 is located on the bottom surface of the heat dissipation bracket 2, and the fog light rays emitted by it are reflected outward through the lower reflection part 63 to form a basic illumination area, covering the main illumination range directly in front of the center of the front fog lamp; At the same time, the light rays emitted by the first LED chip lamp beads 31 on the light broadening light source board 3 are optically processed by the toroidal lens 51 in the lens module 5. Relying on the characteristics of the asymmetric optical surface, through the precisely designed curvature distribution, the toroidal lens 51 precisely broadens the initial light beam of the first LED chip lamp beads 31 in the horizontal direction - using the refraction and diffusion effects of the lens surface, the light rays extend to both sides, effectively covering the horizontal angle ranges of ±22° (line segment 8) and ±35° (line segment 9) required by regulations. Vertically, the surface of the toroidal lens 51 synchronously optimizes the light distribution to avoid excessive divergence or concentration of light rays.

[0033] The main light source board 4 and the light broadening light source board 3 cooperate in the narrow fog lamp space. The main light source board 4 ensures the brightness of the central area, and the light broadening light source board 3 expands the illumination range on both sides. The light rays of the two are superimposed on the photometric screen at 25m to form a clear light and dark cut-off line and a uniform and wide light spot, finally achieving the dual high requirements of light spot uniformity and width under the F3 standard, meeting the strict regulations on the photometric beam of the regulations.

[0034] See Figure 9 As shown, in the luminous intensity light pattern diagram simulated in the actual experiment, the front fog lamp configured with the light broadening and supplementary light structure provided by the present invention can be broadened up to the horizontal ±60° interval at most, fully meeting the horizontal position requirements of line segment 8 (±22°) and line segment 9 (±35°) in the F3 photometric diagram.

[0035] The fog lamp provided by the present invention hierarchically arranges and configures the light broadening light source board 3 and the main light source board 4 in a compact space. Through the structural cooperation of the heat dissipation bracket 2 and the reflector 6, the basic illumination and light broadening and photometric functions are integrated into one. The light broadening light source board 3 and the main light source board 4 complement each other through optical division of labor, and finally achieve the dual high requirements of light spot uniformity and width under the F3 standard, breaking through the bottleneck that existing fog lamps are difficult to meet the F3 photometric standard.

[0036] In this embodiment, the convex part of the toroidal lens 51 has an elliptical ring convex texture 641. Through such a design, the difference in the curvature radii in two perpendicular directions is strengthened, further enhancing the asymmetric refraction ability of the LED light. The horizontal direction light beam can be precisely controlled to be broadened to the ±35° range required by regulations, and at the same time, the vertical direction light beam is compressed within ±8°, which also helps to form a sharp light and dark cut-off line meeting the F3 standard, avoiding light pollution and energy loss caused by light scattering.

[0037] Based on the principle of geometric optics, the curved surface structure of the elliptical ring convex texture 641 enables light to produce a more uniform refraction and convergence effect within the horizontal range of ±60° and the vertical range of ±8°. By adjusting the position of the light-emitting center of the first LED surface-mounted lamp bead 31 relative to the focal point of the ring curved surface lens 51 (specifically, the distance between the light-emitting center of the first LED surface-mounted lamp bead 31 and the focal point of the ring curved surface lens 51 is within ±1 mm), a relatively straight bright-dark cut-off line within a range greater than 45° can be achieved, and a uniform light spot can be formed, ensuring that the illuminance distribution on the aiming screen meets the uniformity requirements of a 65-mm side length square area.

[0038] When multiple ring curved surface lens 51 units of the elliptical ring convex texture 641 are superimposed, due to the consistency of the curvature distribution, linear superposition enhancement of the light intensity in the horizontally broadened area can be achieved. Without increasing the light source power, the long-distance lighting penetration in scenarios such as foggy days can be effectively improved, and the dark areas caused by differences in lens units can be avoided, meeting the wide-area lighting requirements during the auxiliary turning of the front fog lamp.

[0039] Furthermore, chamfering 610 expansion is performed on the outer edge of the opening 61. The chamfering 610 expansion design on the outer edge of the opening 61 eliminates the physical blockage of the light emitted by the ring curved surface lens 51 by the edge of the reflector 6, enabling the light to diverge unobstructed in the horizontal and vertical directions. Compared with the traditional right-angle opening 61, the irradiation angle boundary of the fog lamp can be effectively broadened, ensuring that the horizontal coverage range of the light beam breaks through the ±35° limit, and the light diffusion in the vertical direction is not interfered, fully releasing the broadening effect of the ring curved surface lens 51 and meeting the strict requirements of regulations for wide-area lighting. The chamfer 610 structure prevents the generation of reflected stray light or shadows at the edge of the opening 61, enabling the light beam refracted by the lens to transition to the surrounding area at a smoother angle, reducing the brightness attenuation at the edge of the light spot, improving the uniformity of the illuminance distribution on the aiming screen, and reducing the risk of visual fatigue for the driver caused by uneven brightness.

[0040] Preferably, the chamfering 610 expands to form a smooth curved surface transition. On the one hand, it eliminates the sharp edges at the opening 61 of the reflector 6, forming a visual echo with the convex elliptical ring shape of the lens, enhancing the delicate sense and overall coordination of the lamp appearance.

[0041] In this embodiment, six ring curved surface lenses 51 are provided and arranged in a triangular pattern. The six ring curved surface lenses 51 are densely arranged in a triangular pattern, expanding the light coverage range in the horizontal and vertical directions through the optical superposition effect. Horizontally, a beam broadening exceeding ±35° can be achieved in cooperation, and vertically, the light domain gap is filled through staggered distribution, meeting the strict requirements for long-distance and wide-angle lighting in the F3 light distribution standard, especially significantly improving the driver's field of vision boundary in low visibility scenarios such as foggy days.

[0042] The symmetric layout of the triangular array enables the light to form overlapping spots on the aiming screen, eliminating the central bright spot defect of a single-point light source and achieving a more uniform illuminance distribution. At the same time, through the cooperative refraction of the light between the lenses, the light intensity is enhanced by superposition within the core illumination area, improving the penetration ability and warning effect in foggy weather.

[0043] In fact, the number configuration of the toric lens 51 is also related to the size of the housing. The toric lens 51 can also be configured in the following ways: 1. Set four of the toric lenses 51 and arrange them in a rectangular pattern. 2. Set three of the toric lenses 51 and arrange them in an equilateral triangle layout. 3. Set five of the toric lenses 51 and arrange them in a plum blossom staggered pattern, that is, one lens in the center and four in a rhombus distribution on the periphery, forming a misaligned overlapping light path.

[0044] The lower reflection part 63 is semicircular in the front view projection and is composed of multiple free optical surfaces 631. The main light source board 4 is provided with at least one second LED chip lamp bead 41 facing the free optical surface 631.

[0045] It can be understood that each free optical surface 631 corresponds to form a light reflection partition, and each light reflection partition can be designed with a targeted light distribution (such as independently optimizing the surface parameters for the illuminance distribution in the horizontal and vertical directions), so that after the light of the second LED chip lamp bead on the main light source board 4 is reflected, a clear cut-off line and a specific light pattern can be accurately constructed on the light distribution screen, meeting the quantitative requirements of the regulations for the F3 level standard, especially strengthening the brightness uniformity and angle coverage in the horizontal direction.

[0046] It should be noted that the steps connecting the free optical surfaces 631 should be reasonably adjusted, which not only simplifies the mold forming process (reducing the high-precision processing requirements for complex surfaces), but also reduces the mold development cost and production difficulty, and also ensures the consistency of the light reflection path, taking into account both optical performance and mass production feasibility.

[0047] In this embodiment, the second LED chip lamp bead 41 is set as a single one, significantly reducing the light source cost and the complexity of the circuit drive. Combining with the efficient light control characteristics of the free optical surface 631, it reduces energy consumption while meeting the main lamp lighting requirements, conforming to the trend of lightweight and energy-saving of the automotive lighting system. The single second LED chip lamp bead 41 cooperates with the free optical surface 631, and can achieve precise refraction and convergence of light through customized surface parameters, performing high-intensity supplementary lighting for the central area of the front fog lamp and making up for the uneven spot superposition problem that may occur in a multi-lamp bead array.

[0048] Preferably, a light suppression recess 632 is provided on the lower reflection portion 63. The provision of the light suppression recess 632 can change the light reflection path, specifically absorb or refract the light that overflows upward from the main light source plate 4 through the lower reflection portion 63, effectively suppressing the glare in the area above the cut-off line on the light distribution screen. In low visibility scenarios such as foggy days, this design prevents the direct light of the front fog lamp from shining on oncoming vehicles or pedestrians, reduces visual interference, and significantly improves driving safety and regulatory compliance. By eliminating the stray light above the cut-off line, the light suppression recess 632 enables the light distribution beam to form a sharper bright-dark transition boundary on both sides of the V-V line, meeting the requirement of the "symmetrical and roughly horizontal" cut-off line in the F3 standard. The clear cut-off line not only facilitates visual vertical adjustment but also ensures that the light energy is concentrated in the effective area specified by regulations, improving the lighting efficiency.

[0049] Furthermore, an annular border 64 is provided on the reflector 6, and raised textures 641 are continuously arranged on the inner circumferential surface of the annular border 64. The raised texture 641 structure on the inner circle of the annular border 64 effectively intercepts and absorbs the stray light scattered from the spread light source plate 3 or the main light source plate 4 to the edge of the reflector 6 through physical occlusion and multiple diffuse reflections. The micro-light-shielding barrier formed by the raised textures 641 can block the reflection path of light in the non-effective area of the reflector 6, preventing stray light from being projected onto the non-effective area of the light distribution screen, ensuring that the light distribution beam of the front fog lamp strictly meets the requirements of regulations for the cut-off line and the effective lighting area, and improving the beam purity.

[0050] In addition, the surface of the reflector 6 is aluminized to improve the optical reflection efficiency and decorative effect. The raised texture 641 structure forms a micro-texture substrate on the surface of the reflector 6, significantly increasing the adhesion area and mechanical bite force of the aluminized layer. Compared with a smooth plane, this texture can effectively reduce defects such as sagging and bubbles during the aluminizing process, improve the coating uniformity and adhesion, and extend the optical reflection life of the reflector 6. At the same time, the regular arrangement of the raised textures 641 facilitates the automatic spraying positioning of the aluminizing equipment, reducing the process complexity and defect rate.

[0051] Preferably, a lens 7 is provided at the front end of the housing 1. The provision of the lens 7 provides a physical protection barrier for the lens module 5 and the internal light source, effectively blocking dust, moisture, and mechanical shock, preventing the optical elements from being soiled or damaged, and ensuring that the toric lens 51 can stably perform the spread light distribution function for a long time. A plurality of mounting lugs 11 are provided on the outer circumferential surface of the housing 1, and can be quickly adapted to the mounting parts such as bumpers and grilles of different vehicle models through connecting parts such as bolts and buckles. The distribution and angle of the mounting lugs 11 are optimized, which can not only disperse the vibration stress during the operation of the front fog lamp but also be compatible with diverse installation space limitations, significantly improving the product versatility and assembly efficiency.

[0052] The present invention provides two design embodiments of the lugs, as shown in Figure 6As shown, in the first embodiment: there are four mounting lugs 11, and the four mounting lugs 11 are arranged symmetrically in pairs left and right; see Figure 7 As shown, in the second embodiment: there are three mounting lugs 11, and the three mounting lugs 11 are arranged in a circular array.

[0053] A power drive board 13 is provided on the heat dissipation bracket 2. The heat generated by the operation of the power drive board 13 is quickly transferred to the heat dissipation surface of the housing 1, avoiding the light decay or performance degradation of the LED light source caused by overheating of the drive circuit, and improving the long-term reliability and service life of the front fog lamp. A relay 12 is provided on the housing 1. The setting of the relay 12 provides a standardized electrical interface for the front fog lamp. By replacing the complex wire harness welding with a plug-and-play connection, the installation and maintenance difficulty is significantly reduced. The sealed assembly design of the relay 12 and the housing 1 (such as rubber sealing rings, waterproof connectors) effectively blocks the intrusion of external moisture and dust, ensures the moisture-proof and dust-proof performance of the power drive board 13 and the internal circuit, meets the requirements of the automotive IP protection level, and enhances the working stability of the front fog lamp in harsh environments such as rain, snow, and mud.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0055] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be a direct connection, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and inventive concepts of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A front fog lamp, characterized in that: The invention comprises a shell, a heat dissipation bracket arranged in the shell, a widened light source board arranged on the front end surface of the heat dissipation bracket, a main light source board arranged on the bottom surface of the heat dissipation bracket, a lens module arranged in front of the widened light source board and a reflector located in front of the heat dissipation bracket, wherein the lens module is provided with a plurality of toroidal lenses, the widened light source board is provided with first LED patch lamp beads which are the same in number and correspond one to one with the toroidal lenses, the reflector comprises an upper reflecting part and a lower reflecting part, the upper reflecting part is provided with an opening through which the toroidal lenses extend and which matches the shape of the toroidal lenses, and a window is provided through which the fog light emitted by the main light source board passes, and the lower reflecting part is used for outwardly reflecting the fog light emitted by the main light source board.

2. The front fog lamp according to claim 1, characterized in that: The outer convex part of the toroidal lens presents an elliptical ring convex texture.

3. The front fog lamp according to claim 1, characterized in that: The distance between the light emitting center of the first LED patch lamp bead and the focal point of the toroidal lens is within ±1 mm.

4. The front fog lamp according to claim 1, characterized in that: The outer edge of the opening is chamfered and expanded.

5. The front fog lamp according to any one of claims 1 to 4, characterized in that: There are six toroidal lenses arranged in a triangle.

6. The front fog lamp according to claim 1, characterized in that: The lower reflective portion is semicircular in the main viewing projection and is composed of a plurality of free optical curved surfaces; the main light source board is provided with at least one second LED patch lamp bead facing the free optical curved surface.

7. The front fog lamp according to claim 1, characterized in that: The lower reflective portion is provided with a light suppressing recess.

8. The front fog lamp according to claim 1, characterized in that: The reflector is provided with an annular rim, and convex textures are continuously arranged on the inner surface of the annular rim.

9. The front fog lamp according to claim 1, characterized in that: A lens is arranged at the front end of the shell, and a plurality of mounting ears are arranged on the outer peripheral surface of the shell.

10. The front fog lamp according to claim 1, characterized in that: The heat dissipation bracket is provided with a power drive plate, and the shell is provided with a connector.

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