CN206036884U - projector headlights - Google Patents

Abstract

A projection headlamp includes an upper reflector, a lower reflector, a shield having an opening, a lens, and a light emitting unit. The upper reflector has a downward upper reflecting surface and an upper protruding surface connected with the upper reflecting surface. The lower reflector is positioned below the upper reflector and is provided with an upward lower reflecting surface and a lower convex surface connected with the lower reflecting surface. The light-emitting unit comprises a first light-emitting piece with a near light function and a second light-emitting piece which can be matched with the first light-emitting piece to generate a far light function. The upper convex surface is arranged on the upper reflector, the lower convex surface is arranged on the lower reflector, the bottom surface of the shielding plate can be used for reflecting light rays, and the light rays of the light-emitting pieces can be reflected to specific positions by the matching of the surfaces, so that the brightness of the car lamp and the driving safety are improved.

Description

projector headlights

technical field

The utility model relates to a headlight, in particular to a projection type headlight with the functions of a far light and a near light.

Background technique

A projection headlamp (Poly-Ellipsoid Headlamp System, PES) mainly includes at least one light source, a reflector, a light shield, and a lens. Existing headlights using halogen bulbs as light sources achieve the switching function of far lights and near lights through the movement of the shading plate. At present, there are also projection headlights that use light-emitting diodes (LEDs) instead of halogen bulbs as light sources, wherein the visor can be moved in an electronically controlled manner, and a static, non-moving visor can also be used. The static visor is mainly through the proper design of its structure, and the switching of the high light source and the low light source to project the required high light or low light shape. Generally speaking, in near light mode, the area above the light-dark cut-off line with less light is called a dark area, and the light intensity in the dark area must also reach a certain basic brightness to comply with regulations. Moreover, if the light in the dark area is insufficient, it will easily cause danger. For example, when the driver drives at night, he will not be able to clearly identify the traffic signs with a higher position on the road, causing danger.

In view of the large demand for LED projection headlights in the market, and the problem of insufficient light in dark areas of general headlights, the applicant in this case believes that it is necessary to provide a headlight with innovative structure and safe use for consumers to use more many choices.

Contents of the invention

The purpose of the utility model is to provide a projection type headlight which can improve the brightness of the vehicle light and improve the driving safety.

The projection headlight of the present utility model comprises: an upper reflector with a downward facing upper reflective surface, and a lower reflector located below the upper reflector, the lower reflector has an upwardly directed lower reflective surface . The upper reflector also has an upper protruding surface protrudingly connected to the upper reflective surface, and the lower reflector also has a lower protruding surface protrudingly connected to the lower reflective surface. The projection headlight also includes a shutter, a A lens located on the front side of the upper reflector, the lower reflector and the shroud, and a light-emitting unit, the shroud is located between the upper reflector and the lower reflector and includes a top surface facing the upper reflector, A bottom surface facing the lower reflector, and an opening surface extending from the top surface toward the bottom surface and defining an opening, the light-emitting unit includes a first light-emitting element located below the upper reflector, and a first light-emitting element located under the lower reflector The second light-emitting part above the mirror, part of the light emitted by the first light-emitting part can be reflected by the upper reflective surface and emitted forward through the lens, and part of the light can be reflected by the opening of the upper convex surface towards the shutter , and shoot to the lower convex surface, reflected by the lower convex surface and emitted forward through the lens; part of the light emitted by the second luminous element can be reflected by the lower reflecting surface and emitted forward through the lens, in addition Part of the light can be reflected by the lower reflective surface toward the bottom surface of the shutter, and then go forward through the lens.

In the projection type headlight described in the present invention, the upper reflective surface and the lower reflective surface are arc surfaces, the upper reflector includes an upper body with the upper reflective surface, and an upper body protruding downward from the upper body and The upper protruding block having the upper protruding surface, the lower reflecting mirror includes a lower body having the lower reflecting surface, and a lower protruding block protruding upward from the lower body and having the lower protruding surface.

According to the projection headlamp of the present utility model, the upper protruding surface faces the first light-emitting part and gradually extends downward from the back to the front, and the lower protruding surface is located at the rear and lower side of the upper protruding surface and gradually extends from the back to the front. Stretch downward.

In the projection headlight of the present invention, the opening is rectangular, and the length direction of the opening extends left and right, and the width direction of the opening extends front and rear.

According to the projection headlight of the present invention, the opening surface of the shutter has a front part and a rear part arranged front and back, and the front part and the rear part are both obliquely extending from front to back gradually downward.

In the projection headlight of the present invention, both the first luminous element and the opening are located at the rear and lower side of the upper convex surface, and the first luminous element is located at the rear of the opening.

In the projection headlight of the present utility model, the lower protruding surface is located at the rear and lower side of the opening.

According to the projection headlight of the present invention, the top surface of the shield extends horizontally forward and backward, and the bottom surface has a slope portion connected to the bottom edge of the opening surface and gradually extending forward and upward.

The beneficial effect of the utility model is that: the upper reflector is provided with the upper convex surface, and the lower reflector is provided with the lower convex surface, so that part of the light of the first light-emitting part can pass through the upper convex surface and the lower convex surface. With reflection, it can project light that can be used to reinforce dark areas and improve driving safety. In addition, the bottom surface of the shutter can also be used to reflect light, so that part of the light of the second light-emitting part can be reflected through the lower reflective surface and the bottom surface, and projected to the strong light area of the high-end light, which can enhance the brightness of the long-distance light .

Description of drawings

Other features and effects of the present utility model will be clearly presented in the implementation manner with reference to the drawings, wherein:

Fig. 1 is a three-dimensional exploded view illustrating an embodiment of the projection headlight of the present invention;

Figure 2 is an exploded perspective view illustrating some of the elements of this embodiment;

Fig. 3 is a combined sectional view of this embodiment;

Fig. 4 is a combined sectional view of this embodiment, illustrating the light path when this embodiment projects a dipped light shape;

Fig. 5 is a combined sectional view of this embodiment, illustrating the light path when this embodiment projects a high light pattern;

FIG. 6 is a combined cross-sectional view similar to FIG. 5 , illustrating the light path used to enhance the brightness of the high light area in the high beam pattern in this embodiment.

detailed description

Referring to Fig. 1, 2, 3, an embodiment of the projection headlight of the present invention includes a lamp holder 1, an upper reflector 2, a lower reflector 3, a shroud 4, a lens 5, and a light-emitting unit 6, and a cooling unit 7.

The lamp holder 1 defines an accommodating space 10 with an opening facing upward. The lamp holder 1 can be used for mounting the upper reflector 2 , the lower reflector 3 , the shroud 4 , the lens 5 and the heat dissipation unit 7 .

The upper reflector 2 is mounted on the top of the lamp holder 1 and includes an upper body 21 and an upper protrusion 22 protruding downward from the upper body 21 . The upper body 21 has a downward facing and curved upper reflective surface 211 , and the upper reflective surface 211 is an elliptical reflective surface. The upper protrusion 22 protrudes downward from the upper reflection surface 211 and has an upper protrusion 221 protrudingly connected to the upper reflection surface 211 . The upper protruding surface 221 is discontinuous with the upper reflective surface 211 , the upper protruding surface 221 faces obliquely backward and downward, and gradually extends obliquely downward from back to front.

The lower reflector 3 is located below the upper reflector 2 and is located in the accommodating space 10 of the lamp holder 1 . The lower reflector 3 includes a lower body 31 and a lower protrusion 32 protruding upward from the lower body 31 . The lower body 31 has an upwardly curved lower reflective surface 311 , and the lower reflective surface 311 is an elliptical reflective surface. The lower protrusion 32 protrudes upward from the lower reflection surface 311 and has a lower protrusion 321 protrudingly connected to the lower reflection surface 311 . The lower protruding surface 321 is discontinuous with the lower reflective surface 311 , the lower protruding surface 321 faces obliquely forward and upward, and gradually extends obliquely downward from back to front.

The shutter 4 is located between the upper reflector 2 and the lower reflector 3, and includes a top surface 41 facing the upper reflector 2, a bottom surface 42 facing the lower reflector 3, and a bottom surface 41 from the top surface 41. Extends toward the bottom surface 42 and surrounds an opening surface 43 defining an opening 40 . The top surface 41 extends horizontally forward and backward, and the bottom surface 42 has an inclined portion 421 connected to the bottom edge of the opening surface 43 and extending forward and upward gradually, so that the shutter 4 is located at the front side of the opening 40. The thickness is gradually thinning towards the front. Both the top surface 41 and the bottom surface 42 have a light reflection function. In fact, the shutter 4 can be subjected to a double-sided vacuum process to form a light reflection film on the top surface 41 and the bottom surface 42 respectively, so that the top surface Both 41 and the bottom surface 42 can be used to reflect light. The opening surface 43 of the shroud 4 has a front portion 431 and a rear portion 432 spaced from front to back, and the front portion 431 and the rear portion 432 extend obliquely downward from front to back. The opening 40 in this embodiment is rectangular, and the length direction of the opening 40 extends left and right, and the width direction of the opening 40 extends front and rear.

The lens 5 is located in front of the upper reflector 2 , the lower reflector 3 and the shutter 4 . The lens 5 is a convex lens, which can be used to focus the light of the light emitting unit 6 and emit it forward.

The light emitting unit 6 includes a first circuit board 61 located on the top surface 41 of the shutter 4, a second circuit board 62 located on the bottom surface 42 of the shutter 4, and a circuit board 62 arranged on the top of the first circuit board 61. A first light-emitting element 63 on the surface and below the upper reflector 2 , and a second light-emitting element 64 on the bottom surface of the second circuit board 62 and above the lower reflector 3 . Both the first light-emitting element 63 and the second light-emitting element 64 in this embodiment are light-emitting diodes (LEDs), wherein the first light-emitting element 63 emits light upward, and the second light-emitting element 64 emits light downward.

In this embodiment, the upper convex surface 221 of the upper reflector 2 faces the first light-emitting element 63 . The first light-emitting element 63 , the second light-emitting element 64 , the lower protruding surface 321 and the opening 40 of the shutter 4 are located behind and below the upper protruding surface 221 . And the first light emitting element 63 is located behind the opening 40 . The lower protruding surface 321 is located behind and lower than the opening 40 .

The heat dissipation unit 7 is installed on the lamp holder 1 and is located at the rear side of the light emitting unit 6 . The cooling unit 7 includes a fan 71 and a plurality of cooling fins 72 spaced left and right and extending upward from the fan 71 . The heat sink 72 can be used for dissipating and dissipating heat energy generated when the light emitting unit 6 is in operation.

Referring to Fig. 4, when the utility model is in use, part of the light emitted by the first light-emitting element 63 (such as the light path A in Fig. 4) can be reflected by the upper reflective surface 211 of the upper reflector 2 obliquely forward and downward, and pass through The lens 5 shoots forward and can project a low beam shape that complies with regulations. In addition, part of the light emitted by the first light-emitting element 63 (as shown in light path B in FIG. 4 ) can be reflected by the upper convex surface 221 toward the rear and downward, so that the light passes through the opening 40 of the shutter 4 and is emitted. After going to the lower convex surface 321 of the lower reflector 3, after being reflected obliquely forward and upward by the lower convex surface 321, it is emitted forward through the lens 5, and the light of this part can be projected onto the cut-off line (cut-off line) ) above the area (called the dark area), and then strengthen the light in the dark area, which can improve driving safety. For example, when driving at night, the driver can clearly identify the traffic signs with higher positions on the road by enhancing the light in dark areas.

Referring to FIG. 5 , on the other hand, part of the light emitted by the second light-emitting element 64 (such as the light path C in FIG. 5 ) can be reflected obliquely forward and upward by the lower reflective surface 311 , and emitted forward through the lens 5 . This part of the light is mainly projected to the position above the cut-off line. Therefore, the light shape formed by the simultaneous light-emitting cooperation of the second light-emitting element 64 and the first light-emitting element 63 , that is, the effect produced by the combination of light paths A and C, can project a high-speed light shape that meets regulations. To sum up, when the far light is to be used (FIG. 5), both the second luminous part 64 and the first luminous part 63 must be turned on; when the near light is to be used (Fig. 4), only the first luminous part 63 Just turn on the light.

Referring to FIG. 6 , further, another part of the light emitted by the second light-emitting element 64 (such as the light path D in FIG. 6 ) is reflected by the lower convex surface 321 of the lower reflector 3 toward the obliquely front and upper direction, and then shoots toward the shield. The bottom surface 42 of the plate 4 is reflected by the bottom surface 42 and emitted forward through the lens 5. This part of the light can mainly strengthen the light in the strong light area of the high light shape when the high light is used, which helps to improve the high distance light. Light brightness.

Referring to FIGS. 2 , 3 and 4 , it is worth mentioning that the shape of the opening 40 of the shield 4 can be used to adjust the shape of the emitted light. The opening 40 of this embodiment is a rectangle whose length direction extends along the left and right directions, so that the shape of the light projected for the darkening area is also close to a rectangle, and the light emitting area extends left and right to the length, which can meet the requirements of regulations. In addition, since part of the light (light path B) of the first light-emitting element 63 hits the upper convex surface 221, it is mainly reflected obliquely backward and passes through the opening 40, in order to match the direction of the light path passing through the opening 40 Therefore, the front portion 431 and the rear portion 432 of the opening surface 43 are all designed as slopes that gradually extend downwards from the front to the rear, and extend obliquely along the incident direction of the light (rather than vertically extending up and down), so Most of the light in the light path B can smoothly pass through the opening 40 from top to bottom, increasing the light incident rate and improving the brightness of the vehicle light.

In summary, the utility model is provided with the upper convex surface 221 through the upper reflector 2, and the lower reflector 3 is provided with the lower convex surface 321, so that part of the light emitted by the first light-emitting element 63 can pass through the upper convex surface. The surface 221 cooperates with the lower protruding surface 321 to project light that can be used to reinforce dark areas (light path B in FIG. 4 ), which can improve driving safety. The bottom surface 42 of the shroud 4 can also be used to reflect light, so that part of the light of the second light emitting element 64 can be reflected through the combination of the lower reflection surface 311 and the bottom surface 42 (light path D in FIG. 6 ), and projected. To the strong light area of the far light, increase the brightness of the far light. The utility model achieves the above-mentioned double supplementary light effect through the innovative structure, can improve the brightness of the car lights, and the shapes of the near lights and the far lights projected conform to the regulations, and are quite convenient to use.

Claims (8)

1. a kind of projection-type head lamp, comprising：One have a upper reflecting surface directed downwardly upper reflector, and one be located at should Lower speculum below upper reflector, the lower speculum have a lower reflecting surface upward, it is characterised in that：The upper reflector Also there is a upper prominent face for highlightedly connecting reflecting surface on this, the lower speculum also highlightedly connects the lower reflection with one The lower prominent face in face, the projection-type head lamp are also located at before the upper reflector, the lower speculum and the shield comprising a shield, one The lens of side, and a luminescence unit, the shield are located between the upper reflector and the lower speculum, and should including a direction The top surface of upper reflector, a bottom surface towards the lower speculum, and one extend towards the bottom surface from the top surface and define one The opening surface of individual opening, the luminescence unit include first illuminating part being located at below the upper reflector, and one is located at The second illuminating part above the lower speculum, some light that first illuminating part sends can be subject to reflective surface to lead on this Cross the lens to project forward, have some light be subject on this to dash forward and face the opening of the shield and reflect in addition, and directive is under this Behind prominent face, reflected and passed through the lens by the lower prominent face and projected forward；The some light that second illuminating part sends can be subject to should Projected by the lens forward after lower reflective surface, have some light the lower reflecting surface can be subject to towards the bottom of the shield in addition After the reflection of face, then projected by the lens forward.

2. projection-type head lamp as claimed in claim 1, it is characterised in that：On this, reflecting surface and the lower reflecting surface are all cambered surfaces, The upper reflector includes a upper body with reflecting surface on this, and one body is prominent down and has on this from this The upper projection in prominent face, the lower speculum include one have the lower reflecting surface lower body, and one from the lower body upward The prominent and lower projection with the lower prominent face.

3. projection-type head lamp as claimed in claim 1 or 2, it is characterised in that：On this dash forward facing to first illuminating part and Gradually stretch towards oblique back to front, the lower prominent face be located at this on prominent face the back lower place and gradually stretch towards oblique back to front.

4. projection-type head lamp as claimed in claim 1, it is characterised in that：The opening is rectangle, and the length side of the opening To extending for left and right, the width of the opening is to extend in front and back.

5. projection-type head lamp as claimed in claim 1, it is characterised in that：The opening surface of the shield has for arranging in front and back Individual front face and a rear face, the front face and the rear face are all gradually to stretch towards oblique from front to back.

6. projection-type head lamp as claimed in claim 1, it is characterised in that：First illuminating part is all located at dashing forward on this with the opening The back lower place in face, first illuminating part are located at the opening rear.

7. projection-type head lamp as claimed in claim 6, it is characterised in that：The lower prominent face is located at the back lower place of the opening.

8. projection-type head lamp as claimed in claim 1, it is characterised in that：The top surface of the shield in front and back to horizontal-extending, The bottom surface connects the opening surface root edge with one and the gradually upward inclined plane part stretched forward.