Double-lens lamplight assembly and front lamp

Abstract

The invention discloses a double-lens lamplight assembly and a headlight. The double-lens lamplight assembly comprises a light-emitting part, a first lens and a second lens. The first lens comprises a first light-in surface and a first light-out surface, the first light-in surface is a plane, and the first light-out surface is in a three-dimensional cambered surface shape; the second lens comprises a second light-in surface and a second light-out surface, the second light-in surface is a plane, and the second light-out surface is in a three-dimensional cambered surface shape; the first lens and the second lens are combined, light is condensed twice, and the brightness of a light spot or a lighting area is improved; and the curvature of the first meridian and the curvature of the second meridian of the second light-emitting surface of the second lens are different, so that non-circular light spots such as drum-shaped light spots can be formed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamps, and in particular to a dual-lens lamp assembly and a headlight. Background Art

[0002] Car lights are used for vehicle lighting. In order to increase the brightness of the lighting, a convex lens structure is often used for focusing. However, most existing lamp structures only have one convex lens structure, and the focusing effect is poor.

[0003] In addition, the light spot formed by the car lights is generally circular, but for some specific places or regions, non-circular light spots such as elliptical or drum-shaped are required. The existing focusing transparent parts of the car lights are convex lens structures, which are spherical surfaces and can only form circular light spots. Summary of the invention

[0004] The object of the present invention is to provide a dual-lens lighting assembly and a headlight, wherein a first lens and a second lens are combined to focus the light twice, thereby increasing the brightness of a light spot or an illuminated area; and the curvatures of the first meridian and the second meridian of the second light-emitting surface of the second lens are different, thereby being able to form a non-circular light spot such as a drum shape.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A dual-lens lighting assembly comprises a light-emitting portion, a first lens and a second lens arranged in sequence;

[0007] The first lens comprises a first light incident surface and a first light emitting surface, wherein the first light incident surface is a plane and the first light emitting surface is a three-dimensional arc surface;

[0008] The second lens includes a second light incident surface and a second light emitting surface, wherein the second light incident surface is a plane and the second light emitting surface is a three-dimensional arc surface.

[0009] In some embodiments, the second light emitting surface includes a first meridian and a second meridian, and the curvature variation degree of the first meridian is greater than the curvature variation degree of the second meridian.

[0010] In some embodiments, the ratio of the height to the span of the first meridian is greater than the ratio of the height to the span of the second meridian;

[0011] Among them, the height of the first meridian is equal to the height of the second meridian; the span of the first meridian is smaller than the span of the second meridian.

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

[0013] In some embodiments, a ratio of the height of the first light emitting surface to the total span is between 0.45 and 0.55.

[0014] In some embodiments, the invention further comprises a light emitting unit, the light emitting unit comprises a first lamp bead and a circuit board; the first lamp bead, the first lens and the second lens are arranged in sequence;

[0015] The first lamp bead corresponds to the first light incident surface.

[0016] In some embodiments, the first lamp bead and the first lens are both disposed close to the bottom of the first light incident surface.

[0017] In some embodiments, the first lens and the second lens are tilted, and the first lamp bead and the second lens are tilted, and the tilt angle is between 5 degrees and 10 degrees.

[0018] A headlight, comprising a dual-lens light assembly, a lampshade, a decorative piece, a bracket and a rear shell;

[0019] A lug is provided on the outer side of the first lens, and a convex column is provided on the lug;

[0020] The circuit board of the light-emitting part is provided with a slot matching with the convex column;

[0021] The decorative piece is provided with a first central hole, and the bracket is provided with a second central hole. The second central hole can accommodate the flange of the second lens, and the edge of the first central hole abuts against the flange.

[0022] In some embodiments, a first light-transmitting area is provided at an edge of the bracket, and a first light-transmitting through hole corresponding to the first light-transmitting area is provided at an edge of the decorative element;

[0023] The circuit board of the light-emitting part is provided with second lamp beads corresponding to the first light-transmitting area.

[0024] In some embodiments, the decorative element is provided with a first flange, the lampshade is provided with a first side edge, and the rear shell is provided with a ring groove capable of accommodating the first flange and the first side edge;

[0025] A convex buckle is provided on the outer side of the first side edge, and a concave buckle is provided on the annular groove;

[0026] A glue groove for accommodating glue is arranged on the outer side of the first side.

[0027] The beneficial effects of the present invention are as follows: the first lens and the second lens are combined to focus the light twice, thereby increasing the brightness of the light spot or the illuminated area;

[0028] Furthermore, the curvatures of the first meridian and the second meridian of the second light-emitting surface of the second lens are different, so that a non-circular light spot such as a drum shape can be formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 An exploded view of a dual-lens lighting assembly of the present invention;

[0030] Figure 2 A side view of a dual-lens light assembly of the present invention;

[0031] Figure 3 is a cross-sectional view of a second lens of the present invention;

[0032] Figure 4 is a cross-sectional view of a first lens of the present invention;

[0033] Figure 5 is a cross-sectional view of a headlight of the present invention;

[0034] Figure 6 for Figure 5 A partial enlarged view of point C;

[0035] Figure 7 is one of the exploded views of the headlight of the present invention;

[0036] Figure 8 This is the second exploded view of the headlight of the present invention;

[0037] Fig. 9 This is a light spot effect diagram formed by the dual-lens lighting assembly of the present invention;

[0038] Among them: 1-dual-lens lighting assembly; 11-first lens; 111-first light-entering surface; 112-first light-emitting surface; 113-lug; 114-column; 12-second lens; 121-second light-entering surface; 122-second light-emitting surface; 1221-first meridian; 1222-second meridian; 123-flange; 2-light-emitting part; 21-first lamp bead; 22-second lamp bead; 23-circuit board; 231-slot; 3-lampshade; 31-first side edge; 32-convex buckle; 33-glue groove; 4-decorative part; 41-first center hole; 42-first light-transmitting through hole; 43-first flange; 5-bracket; 51-second center hole; 52-first light-transmitting area; 6-back shell; 61-concave buckle; 62-ring groove. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] refer to Figures 1 to 4 A dual-lens lighting assembly 1 includes a light-emitting portion 2, a first lens 11, and a second lens 12 arranged in sequence; the first lens 11 and the second lens 12 can be made of a light-transmitting material such as PMMA, PC or glass;

[0041] The first lens 11 includes a first light incident surface 111 and a first light emitting surface 112, wherein the first light incident surface 111 is a plane, and the first light emitting surface 112 is a three-dimensional arc surface, which may be a spherical surface or a free-form surface; the first lens 11 is a convex lens structure, which can evenly radiate light to the second lens 12 in a focusing manner;

[0042] The second lens 12 includes a second light incident surface 121 and a second light emitting surface 122, wherein the second light incident surface 121 is a plane, the second light emitting surface 122 is a three-dimensional arc surface, the three-dimensional arc surface shape may be a free-form surface, and the second lens 12 is a convex lens structure;

[0043] The first lens 11 and the second lens 12 both focus the light, and the light passes through the first light incident surface 111, the first light emitting surface 112, the second light incident surface 121 and the second light emitting surface 122 in sequence, thereby forming a preset light spot or illumination area. The light is focused twice to increase the brightness of the light spot or illumination area.

[0044] refer to Figure 3 , the second light emitting surface 122 includes a first meridian 1221 (AO segment curve) and a second meridian 1222 (BO segment curve), and both the first meridian 1221 and the second meridian 1222 are spline curves;

[0045] The curvature variation of the first meridian 1221 is greater than that of the second meridian 1222. It can also be understood that the slope of the first meridian 1221 varies greatly, and the slope of the second meridian 1222 varies less. Therefore, the curvatures of the first meridian 1221 and the second meridian 1222 are different, and the focusing or refraction effects are different, so that a non-circular light spot can be formed. Fig. 9 For example, a drum-shaped light spot is formed, which is equivalent to the top and bottom of the circular light spot being cut off; a non-circular light spot can meet the requirements of specific application places or standards; and the top of the light spot has an obvious light-dark dividing line, that is, the boundary between the illuminated area and the non-illuminated area is more obvious.

[0046] refer to Figure 3 , the ratio of the height H1 to the span W1 of the first meridian 1221 is greater than the ratio of the height H2 to the span W2 of the second meridian 1222; specifically, the ratio of the height H1 to the span W1 is between 0.8 and 0.9; the ratio of the height H2 to the span W2 is between 0.75 and 0.85;

[0047] The height H1 of the first meridian 1221 is equal to the height H2 of the second meridian 1222 ; and the span W1 of the first meridian 1221 is smaller than the span W2 of the second meridian 1222 .

[0048] The ratio of the height H3 of the second light emitting surface 122 to the total span W3 is between 0.35 and 0.45. Therefore, the first meridian 1221 and the second meridian 1222 are designed differently, so that the upper and lower parts of the second light emitting surface 122 form different focusing effects, forming a non-circular light spot such as a drum shape, and the top of the light spot has a clear light-dark boundary.

[0049] refer to Figure 4 The ratio of the height H4 of the first light emitting surface 112 to the total span W4 is between 0.45 and 0.55. Thus, the focusing effect of the first lens 11 is improved.

[0050] refer to Figure 1 and Figure 2 , and also includes a light-emitting unit 2, the light-emitting unit 2 includes a first lamp bead 21 and a circuit board 23, the first lamp bead 21 can be an LED, and the first lamp bead 21 is mounted on the circuit board 23; the first lamp bead 21, the first lens 11 and the second lens 12 are arranged in sequence; the first lamp bead 21 corresponds to the first light incident surface 111.

[0051] The first lamp bead 21 and the first lens 11 are both arranged close to the bottom of the first light incident surface 111, that is, the first lamp bead 21 and the first lens 11 are not opposite to the middle of the first light incident surface 111, but are arranged towards the bottom, which is conducive to forming a more obvious light-dark dividing line at the top of the light spot.

[0052] The first lens 11 and the second lens 12 are tilted, and the first lamp bead 21 and the second lens 12 are also tilted. The first lens 11 and the first lamp bead 21 have the same tilt angle, and the tilt angle θ is between 5 degrees and 10 degrees, which makes the light focus upward and makes the top area of ​​the light spot brighter.

[0053] Therefore, the dual-lens lighting assembly 1 forms a non-circular light spot such as a drum shape through the combination of the first lens 11 and the second lens 12 on the second light-emitting surface 122 with a three-dimensional arc shape, and the two lens pairs are tilted to each other and the lamp beads are offset. This makes the top of the light spot have a clear light-dark dividing line, which can meet the requirements of specific application places or standards.

[0054] refer to Figures 5 to 8 , a headlight, comprising a dual-lens light assembly 1, a lampshade 3, a decorative part 4, a bracket 5 and a rear shell 6;

[0055] The connection between the lampshade 3 and the rear shell 6 forms an inner cavity to accommodate components such as the light-emitting part 2, the first lens 11, the second lens 12, the bracket 5 and the decorative part 4; wherein, the circuit board 23 can be fixed to the rear shell 6 by screws, the bracket 5 can be fixed to the rear shell 6 by screws or plugs, and the decorative part 4 can be fixed to the bracket 5 by screws; the lampshade 3 and the bracket 5 can both be made of light-transmitting material.

[0056] The outer side of the first lens 11 is provided with a lug 113, and the lug 113 is provided with a convex column 114; the circuit board 23 of the light-emitting unit 2 is provided with a slot 231 matched with the convex column 114; the first lens 11 is inserted into the slot 231 through the convex column 114, so that the first lens 11 is fixed to the circuit board 23, and the first light incident surface 111 of the first lens 11 faces the first lamp bead 21;

[0057] The decorative member 4 is provided with a first central hole 41, and the bracket 5 is provided with a second central hole 51. The second central hole 51 can accommodate the flange 123 of the second lens 12, and the edge of the first central hole 41 abuts against the flange 123. The bottom wall of the second central hole 51 and the edge of the first central hole 41 clamp the flange 123 of the second lens 12 to limit the position of the second lens 12; after assembly, the second light emitting surface 122 of the second lens 12 protrudes from the first central hole 41.

[0058] refer to Figure 7 The edge of the bracket 5 is provided with a first light-transmitting area 52, and the edge of the decorative member 4 is provided with a first light-transmitting through hole 42 corresponding to the first light-transmitting area 52, and the first light-transmitting through hole 42 is arranged along the arc direction;

[0059] The circuit board 23 of the light-emitting portion 2 is provided with a second lamp bead 22 corresponding to the first light-transmitting area 52, and the second lamp bead 2 can be an LED.

[0060] The light of the second lamp bead 22 passes through the first light-transmitting area 52 and the first light-transmitting through hole 42 and then radiates to the lampshade 3 and finally to the outside. The light of the second lamp bead 22 can be used as auxiliary light such as driving light and decorative light.

[0061] refer to Figure 6 and Figure 7 The decorative member 4 is provided with a first flange 43, the lampshade 3 is provided with a first side edge 31, and the rear shell 6 is provided with an annular groove 62 capable of accommodating the first flange 43 and the first side edge 31; the end surface of the first side edge 31 abuts against the surface of the first flange 43 away from the annular groove 62, which can further limit the axial position of the decorative member 4 and further stabilize the decorative member 4;

[0062] A convex buckle 32 is provided on the outer side of the first side edge 31, and a concave buckle 61 is provided on the annular groove 62; the lampshade 3 is clamped to the rear housing 6 through the cooperation of the convex buckle 32 and the concave buckle 61;

[0063] A glue groove 33 for accommodating glue is disposed on the outer side of the first side edge 31 , and the lampshade 3 and the rear shell 6 can be re-fixed by glue; thus, the lampshade 3 and the rear shell 6 are doubly fixed by snap-fitting and glue.

[0064] The headlight can be applied to vehicles such as electric bicycles, electric vehicles, and electric scooters.

[0065] 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 creative concept of the present invention, which all belong to the protection scope of the invention.

Claims

1. A dual-lens lighting assembly, characterized in that: It comprises a light-emitting portion (2), a first lens (11) and a second lens (12) which are arranged in sequence; The first lens (11) comprises a first light incident surface (111) and a first light emitting surface (112), wherein the first light incident surface (111) is a plane, and the first light emitting surface (112) is a three-dimensional arc surface; The second lens (12) comprises a second light incident surface (121) and a second light emitting surface (122), wherein the second light incident surface (121) is a plane and the second light emitting surface (122) is a three-dimensional arc surface.

2. A dual-lens lighting assembly according to claim 1, characterized in that: The second light emitting surface (122) comprises a first meridian (1221) and a second meridian (1222), and the curvature variation degree of the first meridian (1221) is greater than the curvature variation degree of the second meridian (1222).

3. A dual-lens lighting assembly according to claim 2, characterized in that: The ratio of the height (H1) to the span (W1) of the first meridian (1221) is greater than the ratio of the height (H2) to the span (W2) of the second meridian (1222); Wherein, the height (H1) of the first meridian (1221) is equal to the height (H2) of the second meridian (1222); and the span (W1) of the first meridian (1221) is smaller than the span (W2) of the second meridian (1222).

4. A dual-lens lighting assembly according to claim 2, characterized in that: The ratio of the height (H3) of the second light emitting surface (122) to the total span (W3) is between 0.35 and 0.45; The ratio of the height (H4) of the first light emitting surface (112) to the total span (W4) is between 0.45 and 0.

55.

5. A dual-lens lighting assembly according to claim 1, characterized in that: The light-emitting part (2) comprises a first lamp bead (21) and a circuit board (23); the first lamp bead (21), the first lens (11) and the second lens (12) are arranged in sequence; The first lamp bead (21) corresponds to the first light incident surface (111).

6. A dual-lens lighting assembly according to claim 5, characterized in that: The first lamp bead (21) and the first lens (11) are both arranged close to the bottom of the first light incident surface (111).

7. A dual-lens lighting assembly according to claim 5, characterized in that: The first lens (11) and the second lens (12) are arranged to be tilted, and the first lamp bead (21) and the second lens (12) are arranged to be tilted, and the tilt angle (θ) is between 5 degrees and 10 degrees.

8. A headlight, characterized in that: A dual-lens lighting assembly comprising any one of claims 1 to 7, further comprising a lampshade (3), a decorative piece (4), a bracket (5) and a rear housing (6); The outer side of the first lens (11) is provided with a lug (113), and the lug (113) is provided with a convex column (114); the circuit board (23) of the light-emitting part (2) is provided with a slot (231) matched with the convex column (114); The decorative piece (4) is provided with a first center hole (41), and the bracket (5) is provided with a second center hole (51), the second center hole (51) is capable of accommodating a flange (123) of a second lens (12), and an edge portion of the first center hole (41) abuts against the flange (123).

9. A headlight according to claim 8, characterized in that: The edge of the bracket (5) is provided with a first light-transmitting area (52), and the edge of the decorative element (4) is provided with a first light-transmitting through hole (42) corresponding to the first light-transmitting area (52); The circuit board (23) of the light-emitting portion (2) is provided with a second lamp bead (22) corresponding to the first light-transmitting area (52).

10. The headlight according to claim 8, characterized in that: The decorative element (4) is provided with a first flange (43), the lampshade (3) is provided with a first side edge (31), and the rear shell (6) is provided with an annular groove (62) capable of accommodating the first flange (43) and the first side edge (31); A convex buckle (32) is provided on the outer side of the first side edge (31), and a concave buckle (61) is provided on the annular groove (62); A glue groove (33) for containing glue is provided on the outer side of the first side edge (31).

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