TWM492998U - Dipped headlight device - Google Patents

Description

Low beam device

The present invention relates to a low beam device, and more particularly to a low beam device using an LED chip as a light source.

It is known that the low beam device used for the automobile headlights uses the halogen lamp and the HID as the light source, and since the LED chip has the advantages of energy saving, the use of the high brightness LED chip as the light source has been the current low beam device. Mainstream. In addition, based on driving safety considerations, the distribution of brightness and light shape is particularly important for low beam devices, and there are also many related regulations for limiting the brightness and shape of the low beam device. Since it is difficult to achieve the required brightness and light shape by using only one LED module having several LED chips, the conventional low beam device usually includes a lamp housing and a plurality of light emitting units respectively mounted on the lamp housing. And a plurality of light shape adjusting units respectively disposed in front of the light emitting units. Each of the light emitting units includes an LED module and a reflective wall surrounding the rear of the LED module. Each of the light adjustment units includes a light shielding plate and a lens located in front of the light shielding plate. After the light emitted by each of the light-emitting units is projected by the respective light-shaped adjusting units, the brightness and the light shape conforming to the low beam light can be superimposed on each other.

Although the above-mentioned low beam device can emit a light pattern that conforms to regulations And brightness, but during assembly, due to the number of LED modules, the reflective walls, the visors and the number of such lenses, and the specific position and angle between each other, the assembly is often increased. Difficulty, and at the same time, many components will also lead to larger volume and occupy more space. Therefore, the structure of the conventional low beam device still needs to be improved.

Therefore, the object of the present invention is to provide a low beam device capable of reducing the volume, reducing the difficulty of assembly, and complying with regulations.

Thus, the novel low beam device comprises a lamp housing, a lighting unit, and a light shaping unit. The light emitting unit is disposed on the lamp housing, and includes two reflective walls adjacent to each other and respectively defining two left and right adjacent reflective spaces, and two LED modules respectively disposed in the reflective spaces. After the light emitted by the LED modules is reflected by the reflective walls, two intersecting light directions can be projected forward. The light shape adjusting unit is disposed in front of the light emitting unit, so that the light energy generated by the light emitting unit conforms to the light shape of the low beam light, and includes a light shielding plate for generating a bright cutoff line, and a light generated by the light emitting unit. Refractive lens.

1‧‧‧ lamp shell

11‧‧‧Hosting

12‧‧‧Assembly

13‧‧‧ screws

14‧‧‧ Around the wall

15‧‧‧Light space

2‧‧‧Lighting unit

21‧‧‧reflecting wall

211‧‧‧ ellipsoidal surface

22‧‧‧LED module

221‧‧‧LED chip

23‧‧‧Reflection space

3‧‧‧Light adjustment unit

31‧‧ ‧ visor

32‧‧‧ lens

L‧‧‧light direction

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a perspective exploded view showing one embodiment of the present low beam device; FIG. 2 is a cross-sectional view Schematic diagram illustrating the embodiment; and Figure 3 is a cross-sectional side elevational view of the embodiment.

Referring to Figures 1, 2 and 3, an embodiment of the present low beam device comprises a lamp housing 1, a lighting unit 2, and a light shaping unit 3.

The lamp housing 1 is mounted to the light unit 2 and the light adjustment unit 3, and includes a carrier 11, an assembly frame 12 mounted above the carrier 11, and a screw 13 is screwed thereto. The frame 12 is assembled and mounted to the surrounding wall 14 in front of the carrier 11. The top surface of the carrier 11 extends obliquely from the front side to the rear. The surrounding wall 14 defines a light path space 15 that communicates back and forth.

The light-emitting unit 2 includes two reflective walls 21 respectively disposed above the carrier 11 and two LED modules 22 respectively mounted on the top surface of the carrier 11 at an angle. The reflective walls 21 are respectively extended upward and forward by the rear side of the carrier 11 and are connected to each other to form an m-shaped cross section as shown in FIG. 2 . Of course, the reflective walls 21 can also be separately formed. The manufacturing is further combined with each other, or separately spaced apart from each other, and is not limited to the embodiment. The reflective walls 21 respectively surround the carrier 11 and define a reflection space 23 communicating with the left and right sides and communicating with the light space 15, each of the reflection walls 21 having an ellipsoid surface 211 facing the respective reflection space 23. .

Each of the LED modules 22 is located in each of the respective reflection spaces 23, and the emitted light energy is reflected by the respective ellipsoidal surfaces 211 to be projected forward. Each LED module 22 includes four spaced-apart lines and can respectively emit light. The LED chip 221, of course, the number of the LED chips 221 may be two, three or more, and is not limited to the embodiment. The LED chips 221 are respectively high-brightness LED chips that emit the brightness according to the regulations. Due to the large number of types and the prior art, they are not the focus of the improvement of the present invention, and therefore will not be described in detail herein. After the light emitted by the LED modules 22 is reflected by the reflective walls 21, two intersecting light directions L can be projected forward, and the linear alignment of the LED chips 221 of each LED module 22 is parallel. In the direction of the respective light, L. In the present embodiment, the light travel directions L intersect in the light travel space 15, but in practice, the light travel directions L may also intersect the front or the rear of the light travel space 15, not in this embodiment. limit.

The light adjustment unit 3 is disposed in front of the light unit 2, The light energy generated by the light-emitting unit 2 conforms to the light shape of the low beam lamp, and includes a light shielding plate 31 and a lens 32. The visor 31 is an upright plate extending longitudinally from left to right and connected to the front side of the carrier 11 for partially blocking the light generated by the illuminating unit 2 to generate a bright cut-off line complying with regulations, but the implementation may also be The carrier 11 is separately manufactured and then combined with each other or separately spaced apart, as long as it is located in front of the light-emitting unit 2, and is not limited to the embodiment. In this embodiment, the top edge shape of the visor 31 extends horizontally from right to left, then slopes downward to the lower left, and finally extends horizontally to the left. However, the top edge of the visor 31 may be other Shape, as long as it can produce a bright cut-off line that meets the regulations. The lens 32 is a convex lens that refracts light and is mounted on the front side of the surrounding wall 14 of the lamp housing 1 and covers the front of the light traveling space 15 for refracting light emitted by the light emitting unit 2.

When assembling the new low beam device, the LED modules are first assembled. 22 is mounted at a specific position on the carrier 11, and the integrally formed reflective walls 21 are mounted on the carrier 11, that is, the lighting unit 2 is mounted. Next, the assembly frame 12 is assembled on the carrier 11 , and the surrounding wall 14 is screwed and fixed to the assembly frame 12 , and the light adjustment unit 3 is installed. Since the light shielding plate 31 is already the same body. It is connected to the front side of the carrier 11, so that it is not necessary to take time to assemble the visor 31, and then the lens 32 is assembled and disposed on the front side of the surrounding wall 14, that is, the assembly of the low beam device is completed. In the main components, the low beam device only needs to assemble the LED modules 22, the reflective walls 21 integrally formed, and the lens 32, which has fewer components and is smaller in size and easy to assemble. Improve the efficiency of assembly.

When the novel low beam device is used, the LED modules 22 The emitted light is respectively projected through the reflective spaces 23 onto the ellipsoidal surfaces 211, and is reflected by the ellipsoidal surfaces 211 to project two intersecting optical directions L into the optical space 15. It should be noted that since the top surface of the carrier 11 is slightly inclined rearward and downward, the LED modules 22 mounted thereon can respectively face the ellipsoidal surfaces 211, so that the LED modules 22 can be prevented from being emitted. The light is directly projected into the light travel space 15.

The light generated by the light emitting unit 2 will follow the light direction L The phase is concentrated and blocked by the visor 31. By designing the shape of the visor 31, local light of a specific shape can be blocked, and the remaining light passes through the light space 15 and is in the light. The space 15 intersects and then passes through the refraction of the lens 32 to project a shape and brightness conforming to the low beam, and A bright cut-off line that meets the regulations. With the design that the light traveling directions L are concentrated and intersected, the present invention requires only a single number of the light shielding plates 31 and the lens 32 to achieve the desired light shape and brightness. It should be noted that the light reflected by the lower half of the ellipsoidal surface 211 will project light with a higher elevation angle, which will affect the line of sight of the incoming vehicle, and thus the light shielding plate 31 disposed in front of the carrier 11 It can be used to block the light with a high elevation angle and produce a bright cut-off line that is brighter above and below the dark. If the bright cut-off line is not required for implementation, the visor 31 is not necessary.

In summary, the present type of low beam device only needs to form a specific shape of the reflective wall 21 by integral molding, and the LED module 22 disposed at an angle is designed to make the light emitting unit 2 The two intersecting light directions L are projected forward, and by the partial occlusion and refraction of the light-shaped adjusting unit 3, the light generated by the light-emitting unit 2 can be brought to a desired brightness and shape without a large number of specific positions. And the components required by the angle, so the structure of the new type can reduce the number of components to reduce the volume, and reduce the difficulty of assembly, and also meet the requirements of relevant laws and regulations, so it can achieve the purpose of the present invention.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the contents of the patent specification are still It is within the scope of this new patent.

1‧‧‧ lamp shell

11‧‧‧Hosting

12‧‧‧Assembly

13‧‧‧ screws

14‧‧‧ Around the wall

15‧‧‧Light space

2‧‧‧Lighting unit

21‧‧‧reflecting wall

22‧‧‧LED module

3‧‧‧Light adjustment unit

31‧‧ ‧ visor

32‧‧‧ lens

Claims (7)

A low beam device comprising: a lamp housing; a lighting unit disposed on the lamp housing and including two reflective walls adjacent to each other and respectively defining two left and right adjacent reflecting spaces, and two respectively An LED module disposed in the reflective spaces, the light emitted by the LED modules being reflected by the reflective walls, capable of projecting two intersecting light directions forward; and a light shaping unit disposed at the In front of the light-emitting unit, the light energy generated by the light-emitting unit conforms to the light shape of the low beam light, and includes a light shielding plate for generating a bright cut-off line, and a lens for refracting light generated by the light-emitting unit. The low beam device of claim 1, wherein the reflective walls are connected to each other, and the reflective spaces are connected to each other. The low beam device of claim 1, wherein the LED modules are disposed at an angle, and each of the LED modules comprises a plurality of LED chips arranged in a line and capable of respectively emitting light, and the arrangement direction of the LED chips Parallel to the direction of each light. The low beam device of claim 1, wherein each of the reflective walls has an ellipsoidal surface facing the reflective space, and the light emitted by each of the LED modules is reflected by the respective ellipsoidal surface and projected forward. The low beam device of claim 1, wherein the lamp housing further comprises a carrier having a top surface inclined from the front to the back for mounting the LED modules, wherein the reflective wall cover is disposed above the carrier And with the carrier Together define the reflection spaces. The low beam device of claim 5, wherein the visor is located between the illuminating unit and the lens, and is connected to the front side of the cradle to partially block the light generated by the illuminating unit. The low beam device of claim 1, wherein the visor is an upright slab extending longitudinally from left to right, and a top edge of the visor is horizontally extended from right to left, then tilted downward to the lower left, and finally Extend horizontally to the left.