Headlamp with obliquely-arranged lens

Abstract

The headlight comprises a light emitting part and the lens, the lens comprises a light inlet face and a light outlet face, the light inlet face corresponds to a lamp bead, the light inlet face is a plane, and the light outlet face is in a three-dimensional cambered surface shape; the lens is inclined downwards. The lens is provided with the light-emitting surface in a three-dimensional cambered surface shape and is obliquely arranged, so that non-circular light spots such as trapezoidal or drum-shaped light spots can be formed, and the requirements of specific application places or standards are met.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to a headlamp with a tilted lens. Background Art

[0002] Headlights are used for vehicle lighting. The light spot formed by headlights is generally circular. However, for some specific places or regions, non-circular light spots such as trapezoidal or drum-shaped are required. The existing headlight focusing transparent parts are convex lens structures with spherical surfaces, which can only form circular light spots. Utility Model Content

[0003] The purpose of the present utility model is to provide a headlight with an inclined lens, wherein the lens has a light-emitting surface in a three-dimensional arc shape and is inclined to form a non-circular light spot such as a trapezoidal or drum-shaped light spot to meet the requirements of specific application places or standards.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A headlamp with an inclined lens, comprising:

[0006] a light-emitting portion, including a lamp bead; and

[0007] The lens includes a light incident surface and a light emitting surface. The light incident surface corresponds to the lamp bead. The light incident surface is a flat surface, and the light emitting surface is a three-dimensional arc surface.

[0008] The lens is tilted downward.

[0009] In some embodiments, the tilt angle of the lens is between 2 degrees and 5 degrees.

[0010] In some embodiments, the lamp beads are arranged near the bottom of the light incident surface.

[0011] In some embodiments, the light emitting surface includes a first meridian and a second meridian, and both the first meridian and the second meridian are spline curves.

[0012] In some embodiments, a ratio of the height to the span of the light emitting surface is between 0.35 and 0.45.

[0013] In some embodiments, further comprising a ferrule and a back shell;

[0014] The light emitting portion further includes a circuit board;

[0015] A first step is provided inside the rear shell;

[0016] The light emitting portion is arranged inside the rear shell;

[0017] The lens is provided with an outer flange;

[0018] The ferrule is annular and has an inner flange;

[0019] One side of the outer flange abuts against the first step, and the other opposite side of the outer flange abuts against the inner flange;

[0020] The ferrule is clamped to the circuit board.

[0021] In some embodiments, the ferrule is provided with a convex buckle, and the circuit board is provided with a buckle opening that matches the convex buckle.

[0022] In some embodiments, the ferrule is further provided with side edges, and when the ferrule is clamped to the circuit board, the side edges abut against the circuit board.

[0023] In some embodiments, further comprising a lampshade;

[0024] The end of the rear shell is provided with a notch capable of accommodating the lampshade; the side of the lampshade is provided with an axially extending protrusion; and the outer side of the rear shell is also provided with an axially extending groove.

[0025] The beneficial effects of the present invention are as follows: the lens has a three-dimensional arc-shaped light-emitting surface, and is tilted to form a non-circular light spot such as a trapezoidal or drum-shaped light spot, meeting the requirements of specific application sites or standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A cross-sectional view of a headlight of the present invention;

[0027] Figure 2 This is a structural diagram of the lens and light-emitting portion of the present invention;

[0028] Figure 3 This is a structural diagram of the lens of the present utility model;

[0029] Figure 4 This is one of the exploded views of the headlight of the present invention;

[0030] Figure 5 This is the second exploded view of the headlight of the present invention;

[0031] Figure 6 This is a light spot effect diagram of the headlight of the utility model;

[0032] Among them: 1-lampshade; 11-raised part; 2-lens; 21-light incident surface; 22-light emitting surface; 221-first meridian; 222-second meridian; 23-outer flange; 3-ferrule; 31-inner flange; 32-protruding buckle; 33-side; 4-light-emitting part; 41-lamp bead; 42-circuit board; 421-buckle mouth; 5-back shell; 51-first step; 52-slot; 53-groove; 54-support ear; 55-mounting hole. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] refer to Figures 1 to 3 , a headlamp with an inclined lens, comprising:

[0035] The light emitting unit 4 includes a lamp bead 41;

[0036] The lens 2 includes a light incident surface 21 and a light emitting surface 22. The light incident surface 21 corresponds to the lamp bead 41. The light incident surface 21 is a plane, and the light emitting surface 22 is a three-dimensional arc surface. The three-dimensional arc surface shape can be understood as a free-form surface shape. The lens 22 has a convex lens structure, which can focus the light and form a non-circular light spot. The lens 2 can be made of a light-transmitting material such as PMMA, PC or glass.

[0037] The lens 2 is tilted downward, for example, the tilt angle θ of the lens 2 is between 2 degrees and 5 degrees, so that the lamp beads 41 and the light incident surface 21 are not parallel to each other, which is conducive to forming a clear light-dark boundary at the top of the light spot;

[0038] refer to Figure 6 The light-emitting surface 22 of the lens 2 is a three-dimensional arc shape and is tilted to form a light spot similar to a trapezoid or drum shape, thereby meeting the requirements of specific application sites or standards.

[0039] refer to Figure 2 The lamp bead 41 is arranged near the bottom of the light incident surface 21. The lamp bead 41 is not facing the middle of the light incident surface 21, but is offset to the bottom and located below the central axis L of the light incident surface 21. This further promotes the light to be more concentrated on the top of the light spot, making the top of the light spot brighter and the bottom of the light spot relatively darker, forming a clear light-dark dividing line at the top of the light spot.

[0040] refer to Figure 3 The light-emitting surface 22 includes a first meridian 221 (the AO segment curve) and a second meridian 222 (the BO segment curve). Both the first meridian 221 and the second meridian 222 are spline curves. The curvature variation of the first meridian 221 and the second meridian 222 can be the same or different. For example, the curvature variation of the first meridian 221 can be greater than that of the second meridian 222. This can be understood as the first meridian 221 having a larger slope and the second meridian 222 having a smaller slope. The upper and lower portions of the light-emitting surface 22 create different focusing effects, resulting in a non-circular light spot, such as a trapezoidal or drum-shaped spot.

[0041] The ratio of the height H to the span W of the light emitting surface 22 is between 0.35 and 0.45, which is more conducive to focusing light and forming a non-circular light spot.

[0042] refer to Figure 1 、 Figure 4 and Figure 5 , the headlight also includes a sleeve 3 and a rear shell 5;

[0043] The light emitting unit 4 further includes a circuit board 42 , and the lamp beads 41 are LEDs, which are mounted on the circuit board 42 ;

[0044] A first step 51 is provided inside the rear housing 5;

[0045] The light emitting portion 4 is disposed inside the rear housing 5 , and the circuit board 42 of the light emitting portion 4 can be assembled inside the rear housing 5 by means of screws or other structures;

[0046] The lens 2 is provided with an outer flange 23;

[0047] The ferrule 3 is annular and is provided with an inner flange 31;

[0048] One side of the outer flange 23 abuts against the first step 51 , and the other side of the outer flange 23 abuts against the inner flange 31 ;

[0049] The ferrule 3 is clamped to the circuit board 42 , whereby the first step 51 cooperates with the inner flange 31 to clamp the lens 2 .

[0050] The ferrule 3 is provided with a convex buckle 32 , and the circuit board 42 is provided with a buckle opening 421 that matches the convex buckle 32 . The convex buckle 32 is snapped into the buckle opening 421 to achieve the connection between the ferrule 3 and the circuit board 42 .

[0051] The ferrule 3 is also provided with a side edge 33, which abuts the circuit board 42 when the ferrule 3 is engaged with the circuit board 42. The protrusion 32 is engaged with one side of the circuit board 42, and the side edge 33 abuts the opposite side of the circuit board 42. The side edge 33 acts as a limiter to improve the stability of the connection between the ferrule 3 and the circuit board 42.

[0052] The back shell 5 further includes a lampshade 1; a notch 52 is provided at the end thereof to accommodate the lampshade 1; the lampshade 1 is made of a light-transmitting material such as PMMA, PC or glass, and the lampshade 1 can be fixedly connected to the back shell 5 by ultrasound or glue;

[0053] An axially extending protrusion 11 is provided on the side of the lampshade 1, and an axially extending groove 53 is also provided on the outer side of the rear shell 5. The protrusion 11 is inserted into the groove 53 to play a limiting role and improve the accuracy and stability of the connection.

[0054] The outer side of the rear shell 5 is provided with a support ear 54, and the support ear 54 is provided with a mounting hole 55. The headlight is assembled on a structure such as a vehicle frame through the support ear 54.

[0055] The headlight can be applied to vehicles such as electric bicycles, electric vehicles, and electric scooters.

[0056] The above disclosure is only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A headlight with an inclined lens, characterized in that: include: A light emitting portion (4), comprising a lamp bead (41); as well as The lens (2) comprises a light incident surface (21) and a light emitting surface (22), wherein the light incident surface (21) corresponds to the lamp bead (41), the light incident surface (21) is a plane, and the light emitting surface (22) is a three-dimensional arc surface; The lens (2) is arranged to be tilted downward.

2. A headlight with an inclined lens according to claim 1, characterized in that: The tilt angle (θ) of the lens (2) is between 2 degrees and 5 degrees.

3. The headlight with a tilted lens according to claim 1, characterized in that: The lamp bead (41) is arranged close to the bottom of the light incident surface (21).

4. The headlight with a tilted lens according to claim 1, characterized in that: The light-emitting surface (22) includes a first meridian (221) and a second meridian (222), the first meridian (221) and the second meridian (222) are both spline curves, and the curvature variation degrees of the first meridian (221) and the second meridian (222) are different.

5. The headlight with a tilted lens according to claim 4, characterized in that: The ratio of the height (H) to the span (W) of the light emitting surface (22) is between 0.35 and 0.

45.

6. A headlight with a tilted lens according to any one of claims 1 to 5, characterized in that: It also includes a ferrule (3) and a rear shell (5); The light-emitting portion (4) further includes a circuit board (42); A first step (51) is provided inside the rear shell (5); The light-emitting portion (4) is arranged inside the rear shell (5); The lens (2) is provided with an outer flange (23); The ferrule (3) is annular and is provided with an inner flange (31); One side of the outer flange (23) abuts against the first step (51), and the other side of the outer flange (23) abuts against the inner flange (31); The clamping sleeve (3) is clamped on the circuit board (42).

7. The headlight with a tilted lens according to claim 6, characterized in that: The clamping sleeve (3) is provided with a convex buckle (32), and the circuit board (42) is provided with a buckle opening (421) that matches the convex buckle (32).

8. The headlight with a tilted lens according to claim 7, characterized in that: The clamping sleeve (3) is further provided with a side edge (33). When the clamping sleeve (3) is clamped on the circuit board (42), the side edge (33) abuts against the circuit board (42).

9. The headlight with a tilted lens according to claim 6, characterized in that: Also includes a lampshade (1); The end of the rear shell (5) is provided with a notch (52) capable of accommodating the lampshade (1); The side of the lampshade (1) is provided with an axially extending protrusion (11); An axially extending groove (53) is also provided on the outer side of the rear shell (5).

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