TWM514538U - Vehicle headlight having light divergence prevention structure - Google Patents

Description

Vehicle headlight with anti-astigmatism structure

The present invention relates to a headlight for a vehicle, and more particularly to a headlight for a vehicle having an anti-scattering structure.

At present, most automotive headlamps still use high-intensity gas discharge lamps (HID) as a light source, and the same wattage of high-intensity gas discharge lamps can produce greater brightness than halogen lamps. However, due to the development of semiconductor technology, light-emitting diodes with longer power consumption and longer life have also been used in automotive headlight lighting systems. Since headlamp lighting requires higher brightness requirements, it is necessary to develop high-power LEDs. Body, and through the secondary optical design, to achieve the use of automotive headlamps for light-emitting diodes, the first optical design of the so-called secondary optical design is carried out in the light-emitting diode package to determine the light-emitting diode Light exit angle, light intensity, luminous flux size, light intensity distribution, color temperature range and distribution; as for secondary optical design, generally high-power light-emitting diodes have a primary lens, the illumination angle is about 120 degrees, and the secondary optical design It is the light that passes through the lens and then passes through an optical lens to change its optical performance.

Different from general lighting equipment: in addition to considering lighting efficiency, automotive headlights need to comply with traffic regulations, that is, the light patterns generated when the headlights are illuminated have certain specifications and restrictions. For example, the driving process of automobiles It is very frequent for the car to arrive in the car. It is necessary to turn on the headlight when driving at night. At this time, the projection angle of the headlight is required to be unable to glare the car to ensure safe driving. These light patterns with special specifications must be achieved through the aforementioned optical design; in addition, since the light-emitting diode has a large light-emitting angle, the probability of astigmatism is relatively high, and after the light-emitting diode is packaged, Unlike the light-emitting diodes of the bare wafers, the light-emitting diodes that are encapsulated by the glue have a refractive index due to the encapsulation of the light when the light is emitted. At this time, it is easy to produce a situation in which control is difficult, and it is necessary to propose a feasible situation for the above situation. Response and solution.

Therefore, the main object of the present invention is to provide a headlight for a vehicle having an anti-scattering structure.

The main technical means for achieving the above-mentioned purposes is that the vehicle headlights are mainly provided with a main lamp assembly in a lamp housing. The main lamp assembly comprises: a lamp cup having a front end and a rear end, the front end of which is formed a concave reflecting wall, the bottom end of the reflecting wall is formed with a through hole extending through the rear end of the lamp cup; the reflecting wall has an upper reflecting surface and a lower reflecting surface; and a light board is disposed on the lamp cup a rear end, the light board is provided with more than one light emitting diode and facing the through hole of the light cup; a lens is disposed at the front end of the light cup, and is opposite to the reflective wall in the light cup and the light on the light board A astigmatism shutter is disposed in the lamp cup and located between the through hole and the lower reflecting surface of the lamp cup.

The light-emitting diode on the lamp board, the reflective wall on the lamp cup and the lens are located on the same light axis, that is, the light of the light-emitting diode is directly passed through the lens, and also through the reflective wall on the lamp cup. After being reflected, the lens is emitted through the lens, and the astigmatism shutter is located between the light-emitting diode and the lower reflecting surface of the reflecting wall, that is, the astigmatism shielding plate shields the reflection of the light of the light-emitting diode on the lower reflecting surface, thereby avoiding A light pattern that affects the other's sight and compliance with regulations, and can improve astigmatism.

Referring to a preferred embodiment of the present invention, first, as shown in FIG. 1 and FIG. 2, a main lamp assembly 20 is disposed in a lamp housing 10;

The lamp housing 10 is mainly composed of a front cover 11, a transparent or light-transmitting cover plate 12 and a rear cover 13. In the embodiment, the rear cover 13 is made of a heat conductive material, and has a front end and a front end. The front end has an opening at the front end, and a fixing hole 131 is formed at each corner of the front end for coupling with the front cover 11; and a plurality of fins 132 are formed outwardly at the rear end of the rear cover 13 to increase The heat dissipation area enhances the heat dissipation effect. In the embodiment, the front cover 11 has a rectangular frame shape and is oppositely coupled to the front end of the rear cover 13 , and the lamp cover 12 is located between the front end of the rear cover 13 and the front cover 11 . .

Referring to FIG. 3, the main lamp assembly 20 is mainly composed of a light cup 21, a light board 22, a lens 23, one or more astigmatism shutters 24 and a back sheet 25;

In the present embodiment, the lamp cup 21 has a rectangular shape and has a front end and a rear end. The front end of the lamp cup 21 has a concave reflective wall 211. The bottom end of the reflective wall 211 is formed with a through hole 212. 212 is inserted through the rear end of the lamp cup 21; the reflective wall 211 is formed in a bowl shape concavely formed at the front end of the lamp cup 21, and has an upper reflecting surface 211A and a lower reflecting surface 211B and two side reflecting surfaces 211C (please refer to the drawing) 4)), in the embodiment, the reflective wall 211 is formed by forming a metal plating on the lamp cup 21, the metal used may be aluminum (Al), and the light cup 21 itself is made of polycarbonate (PC). Or polymethyl methacrylate (PMMA, also known as acrylic).

Referring to FIG. 3, a front end of the lamp cup 21 is formed with a positioning post 213 and a fixing hole 214 for fixing the lens 23. In the embodiment, the lens 23 is a convex lens. The convex side faces the reflective wall 211 of the lamp cup 21, and the two ends of the lens 23 extend outwardly to form a fixing portion 230. The fixing portions 230 are respectively formed with a positioning hole 231 and a fixing hole 232 respectively corresponding to the lamp cup 21. The positioning post 213 and the fixing hole 214, wherein the fixing hole 231 and the positioning post 213 are wedged to form a positioning, and the fixing holes 232, 214 can be screwed to fix each other.

The light board 22 is disposed at the rear end of the light cup 21. In the embodiment, the light board 22 is provided with one or more light emitting diodes 220 on a circuit board, and the plurality of light emitting diodes 220 are formed on the circuit board. The wedge hole 221 is used for fixing the astigmatism shutter 24, and the light-emitting diode 220 on the lamp board 22 faces the through hole 212 of the lamp cup 21, and is located on the same optical axis as the reflective wall 211 and the lens 23 of the lamp cup 21. on.

The astigmatism shutter 24 is located in the lamp cup 21 and is located between the through hole 212 of the lamp cup 21 and the lower reflecting surface 211B of the reflective wall 211. In the embodiment, the astigmatism shutter 24 is a crescent moon shape. The curved bottom end and the horizontal top end are matched with the lower hole edge of the through hole 212, that is, the astigmatism shutter 24 fills a part of the through hole 212 (please cooperate with FIG. 4 and FIG. 5)), and the filled portion is the light path of the light-emitting diode 220 passing through the through hole 212 to the lower reflecting surface 211B, that is, the astigmatism shutter 24 limits the light of the light-emitting diode 220 from The lower reflecting surface 211B is reflected to the lens 23. Further, the surface hues of the astigmatism shutter 24 are dark-colored and have an effect of absorbing astigmatism.

In the embodiment, the back surface of the astigmatism shutter 24 is formed with one or more wedges 240 protruding outwardly. The position and the outer diameter of the wedge 240 are combined with the light board 22 . The upper wedge holes 221 are matched and wedged therebetween. In the embodiment, the light board 22 is fixed to the back board 25, and is fixed to the rear cover 13 of the lamp housing 10 through the back board 25.

The specific configuration of a preferred embodiment of the present invention can be understood from the above description. Since the light-emitting diode 220 on the lamp board 22, the reflective wall 211 on the lamp cup 21, and the lens 23 are on the same optical axis, astigmatism is not disposed. In the state of the shutter 24, the light of the light-emitting diode 220 is reflected by the reflective wall 211 on the lamp cup 21 to the lens 23 in addition to being directly collected by the lens 23; since the present invention is provided with astigmatism in the lamp cup 21 The visor 24 is located between the light-emitting diode 220 and the lower reflecting surface 211B of the reflective wall 211, that is, the astigmatism shutter 24 limits the light of the light-emitting diode 220 from being reflected by the lower reflecting surface 211B. To the lens 23, under this condition, the upper end of the light pattern of the lamp will be reduced in height to avoid direct illumination of the oncoming vehicle when the lamp is illuminated; and because of the design, the problem of astigmatism of the lamp can be effectively improved.

FIG. 6 is a cross-sectional view of another preferred embodiment of the present invention. The basic structure is substantially the same as that of the first preferred embodiment. The difference is that two astigmatism shutters 24 are disposed in the lamp cup 21. 24', in addition to the astigmatism shutter 24 originally located at the edge of the hole of the lamp cup 21, the other astigmatism shutter 24' is located at the upper hole edge of the lamp cup 21, and is fixed in the same manner as the astigmatism shutter 24, in shape. As shown in FIG. 7 , the astigmatism shutter 24 ′ has a curved top end matching a hole edge of the through hole 212 and a horizontal bottom end, and is disposed in the light emitting diode 220 through the through hole 212 . Upon reaching the light path of the upper reflecting surface 211A, that is, the light pattern of the lamp can be further trimmed by the astigmatism shutter 24'.

10‧‧‧Light shell
11‧‧‧ front cover
12‧‧‧ lampshade
13‧‧‧back cover
131‧‧‧Fixed holes
132‧‧‧Fins
20‧‧‧Main lamp assembly
21‧‧‧ light cup
211‧‧‧reflecting wall
211A‧‧‧Upper reflective surface
211B‧‧‧ lower reflective surface
211C‧‧‧ side reflector
212‧‧‧through hole
213‧‧‧Positioning column
214‧‧‧Fixed holes
22‧‧‧light board
220‧‧‧Lighting diode
221‧‧‧ wedge hole
23‧‧‧ lens
230‧‧‧ Fixed Department
231‧‧‧Fixed holes
232‧‧‧Positioning holes
24, 24'‧‧‧ astigmatism
240‧‧‧Wedges
25‧‧‧ Backplane

1 is a perspective view of a first preferred embodiment of the present invention. Figure 2 is an exploded view of the first preferred embodiment of the present invention. Figure 3 is an exploded view of the main lamp assembly of the first preferred embodiment of the present invention. Figure 4 is a front plan view of the first preferred embodiment of the present invention. Figure 5 is a cross-sectional view of the first preferred embodiment of the present invention. Figure 6 is a cross-sectional view of a second preferred embodiment of the present invention. Figure 7 is a front plan view of a second preferred embodiment of the present invention.

20‧‧‧Main lamp assembly

21‧‧‧ light cup

211‧‧‧reflecting wall

212‧‧‧through hole

213‧‧‧Positioning column

214‧‧‧Fixed holes

22‧‧‧light board

220‧‧‧Lighting diode

221‧‧‧ wedge hole

23‧‧‧ lens

230‧‧‧ Fixed Department

231‧‧‧Fixed holes

232‧‧‧Positioning holes

24‧‧‧ astigmatism

240‧‧‧Wedges

Claims (10)

A vehicular headlamp having an anti-scattering structure is mainly provided with a main lamp assembly in a lamp housing, the main lamp assembly comprising: a lamp cup having a front end and a rear end, the front end of which forms a concave reflection a through hole is formed at a bottom end of the wall, and the through hole extends through a rear end of the lamp cup; the reflective wall has an upper reflecting surface and a lower reflecting surface; and a light board is located at a rear end of the lamp cup, the light board Having one or more light-emitting diodes and facing the through holes of the lamp cup; a lens is disposed at the front end of the lamp cup and opposite to the reflective wall in the lamp cup and the light-emitting diode on the lamp board; The shutter is disposed in the light cup and is located between the through hole and the lower reflecting surface of the lamp cup. The vehicular headlamp having the anti-astigmatism structure according to claim 1, wherein the astigmatism shutter is located in the lamp cup, and is located between the through hole of the lamp cup and the lower reflecting surface of the reflective wall, and the astigmatism shutter is It has a crescent shape with a curved bottom end and a horizontal top end, and its curved bottom end matches the lower hole edge of the through hole; further, the surface of the astigmatism shutter is dark. The vehicular headlamp having the anti-astigmatism structure according to claim 2, wherein the back surface of the astigmatism shutter protrudes outwardly to form a wedge column; the lamp board is provided with one or more light-emitting diodes on a circuit board, More than one wedge hole is further formed on the circuit board for bonding with the wedge wedge of the astigmatism shutter. The vehicular headlamp having the anti-astigmatism structure according to claim 3, wherein the lamp cup has a rectangular shape, and a reflective wall at a front end thereof is formed in a bowl-shaped concave shape at a front end of the lamp cup, and has an upper and a lower reflecting surface. Reflective surfaces on both sides. A vehicular headlamp having an anti-scattering structure according to claim 4, wherein the reflecting wall is formed by forming a metal plating on the lamp cup. The vehicular headlight having the anti-astigmatism structure according to claim 5, wherein the front end of the lamp cup is formed with a positioning post and a fixing hole near the two sides; the lens is a convex lens, and the convex side thereof is reflected toward the lamp cup. The wall and the two ends of the lens respectively extend outward to form a fixing portion, and the fixing portions are respectively formed with a positioning hole and a fixing hole respectively corresponding to the positioning post and the fixing hole on the lamp cup. The vehicular headlamp having the anti-scattering structure according to claim 1, wherein the lamp housing is mainly composed of a front cover, a transparent or light-transmitting lamp cover plate and a rear cover, wherein the rear cover is made of a heat conductive material. The utility model has a front end and a rear end, the front end of which has an opening, and each corner of the front end is respectively formed with a fixing hole for coupling with the front cover; and the rear end of the rear cover is formed with a plurality of fins outward; The cover is in the shape of a rectangular frame which is oppositely coupled to the front end of the rear cover, and the cover plate is located between the front end of the rear cover and the front cover. The vehicular headlamp having an anti-scattering structure according to any one of claims 1 to 7, wherein the lamp cup is provided with a second astigmatism shutter, and the second astigmatism shutter is located on the through hole and the upper surface of the lamp cup. Between reflective surfaces. The vehicular headlamp having the anti-astigmatism structure according to claim 8, wherein the second astigmatism shutter has a curved top end matching a hole edge of the through hole and a horizontal bottom end, and is suitable for the light passing through the light emitting diode The through hole reaches the light path of the upper reflecting surface. The vehicular headlamp having the anti-scattering structure according to claim 9, wherein the back surface of the second astigmatism shutter protrudes outwardly to form a wedge.