Low beam module of car lamp

Abstract

A low-beam module of a car lamp comprises a lamp holder and a lampshade, and the low-beam module is installed on the side, facing the lampshade, of the lamp holder. The low beam module comprises a circuit board arranged on the inner bottom face of the lamp holder, a light-emitting chip is installed on the circuit board, the silica gel lens is arranged above the light-emitting chip, the silica gel lens comprises a hemisphere part, a columnar part and an inverted frustum part which are integrally connected from top to bottom, and a vertical face and an arc face are formed on the two sides of the columnar part respectively. A cavity is machined in the center of the bottom of the frustum part and used for containing the light-emitting chip, the inner top face of the cavity hunches up downwards to form an arc-shaped light-in face, the surface of the hemispherical part forms an arc-shaped light-out face, and a light source formed by the light-emitting chip enters the silica gel lens along the inner wall face of the cavity and then is scattered out along the arc-shaped light-out face. A light source formed by the light-emitting chip in the structure enters the frustum part, is firstly collected in the columnar part and then is diffused and emitted in the hemispherical part, and the light source is collected and then diffused in the same medium, so that the attenuation of light during propagation is reduced, the light utilization rate is improved, and the illumination effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a low beam module of car light. BACKGROUND

[0002] Car light is one of the indispensable accessories of motor vehicle, including low beam, high beam, turn signal and so on, with the multiple change of car body model, the position of car body front surface for installing car light is also less and less, and the existing car light structure is complex, accessory is various, not only is inconvenient to assemble, and the light emitting area is also less and less, even so, car light still needs to meet the brightness, light type and irradiation angle of regulation and specification to ensure the safety of driving. SUMMARY

[0003] In view of the above problems, the utility model provides a low beam module of car light.

[0004] In order to realize the above object, the utility model provides a low beam module of car light, including lamp holder, lamp shade, the side of lamp holder towards lamp shade installs low beam module;

[0005] The low beam module includes the circuit board arranged on the inner bottom surface of the lamp holder, the light emitting chip is installed on the circuit board, the silica gel lens is arranged above the light emitting chip, the silica gel lens is pressure bonded on the circuit board through the support, the silica gel lens comprises the hemispherical part, the cylindrical part and the inverted frustum part connected integrally from top to bottom, the cross section of the cylindrical part is semicircular, the cylindrical part forms vertical surface and circular arc surface on both sides respectively, the cavity is processed at the center of the bottom of the frustum part for accommodating the light emitting chip, the lower part of the frustum part is abutted on the circuit board, and the closed space is formed in the cavity, the cavity is conical structure, the top surface of the cavity is arched downward to form the arc light entrance surface, the surface of the hemispherical part forms the arc light exit surface, and the light source formed by the light emitting chip is shot into the silica gel lens along the inner wall surface of the cavity and is emitted along the arc light exit surface.

[0006] As a further improvement of the utility model, the radius of the cylindrical part gradually increases from the hemispherical part to the frustum part, and the radius of the upper part of the cylindrical part matches the radius of the hemispherical part.

[0007] As a further improvement of the utility model, the diameter of the frustum part gradually decreases from top to bottom.

[0008] As a further improvement of the utility model, the inner diameter of the cavity gradually increases from top to bottom, the central axis of the cavity is inclinedly arranged, and the central axis of the cavity is inclined from bottom to top to the vertical surface.

[0009] As a further improvement of the utility model, the boss is provided on the connecting part of the cylindrical part and the hemispherical part and the vertical surface, the front and back width of the boss gradually decreases from top to bottom, and the thickness of the boss gradually increases from top to bottom.

[0010] As a further improvement of the utility model, the limit block is symmetrically arranged at the connecting part of the upper part of the arc surface and the vertical surface.

[0011] As a further improvement of the utility model, the wire hole is formed in the bottom of the lamp holder, the wire is connected to the circuit board after passing through the wire hole, and the other end of the wire is connected to the external power supply.

[0012] As a further improvement of the utility model, the positioning groove is arranged on the support, the silica gel lens is arranged in the positioning groove, and the hemispherical part extends out of the positioning groove.

[0013] The utility model has the advantages of:

[0014] In the structure, the silica gel lens with the integral structure is used to replace multiple accessories such as the light collecting cup, the light guide member and the lens, the positioning and installation are convenient, the light source formed by the light emitting chip is first condensed in the cylindrical part after entering the frustum part, then diffused in the hemispherical part, the light source is first condensed and then diffused in the same medium, the attenuation of the light during propagation is reduced, the light utilization rate and the illumination angle are improved, and the illumination effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the assembly structure diagram of the low beam module of the utility model one kind of car light;

[0016] Figure 2 It is the front view of silica gel lens 4;

[0017] Figure 3 It is the side view of silica gel lens 4;

[0018] Figure 4 It is the light path schematic diagram of the low beam module of the utility model one kind of car light.

[0019] In the drawing: 1, lamp holder;11, wire hole;2, circuit board;3, light emitting chip;4, silica gel lens;41, hemispherical part;411, arc light-out surface;42, cylindrical part;421, vertical surface;422, arc surface;43, boss;44, limit block;45, frustum part;46, cavity;47, arc light-in surface;5, support;51, positioning groove;6, wire;7, lampshade. CONCRETE IMPLEMENTATION

[0020] As Figure 1 shown, the low beam module of the utility model one kind of car light includes lamp holder 1, lampshade 7, and the side of lamp holder 1 towards lampshade 7 is installed low beam module.

[0021] The low beam module includes a circuit board 2 arranged on the bottom surface of the lamp holder 1, a wire hole 11 is arranged on the bottom of the lamp holder 1, the electric wire 6 is connected to the circuit board 2 after passing through the wire hole 11, the other end of the electric wire 6 is connected to an external power supply, a light emitting chip 3 is arranged on the circuit board 2, a silica gel lens 4 is arranged above the light emitting chip 3, the silica gel lens 4 is press-connected to the circuit board 2 through a support 5, the support 5 is provided with a positioning groove 51, the silica gel lens 4 is matched and arranged in the positioning groove 51, a hemispherical part 41 extends out of the positioning groove 51, the support 5 is made of a light shielding material and forms a covering for the lower part of the silica gel lens 4, the silica gel lens 4 includes the hemispherical part 41, a columnar part 42 and an inverted frustoconical part 45 which are integrally connected from top to bottom, the cross section of the columnar part 42 is semicircular, vertical faces 421 and circular arc faces 422 are respectively formed on the two sides of the columnar part 42, the radius of the columnar part 42 gradually increases from the hemispherical part 41 to the frustoconical part 45, the radius of the upper part of the columnar part 42 matches the radius of the hemispherical part 41, the diameter of the frustoconical part 45 gradually decreases from top to bottom, a cavity 46 is arranged at the center of the bottom of the frustoconical part 45 for accommodating the light emitting chip 3, the lower part of the frustoconical part 45 abuts against the circuit board 2, and a closed space is formed in the cavity 46, the cavity 46 is in a conical structure, the inner diameter of the cavity 46 gradually increases from top to bottom, the central axis of the cavity 46 is arranged obliquely, the central axis of the cavity 46 is inclined from bottom to top to the vertical face 421, the inner top face of the cavity 46 is arched downward to form an arc-shaped light entrance face 47, an arc-shaped light exit face 411 is formed on the surface of the hemispherical part 41, the light source formed by the light emitting chip 3 is incident into the silica gel lens 4 along the inner wall face of the cavity 46 and is emitted along the arc-shaped light exit face 411, a boss 43 is arranged on the connecting part of the columnar part 42 and the hemispherical part 41 and on the vertical face 421, the front-to-back width of the boss 43 gradually decreases from top to bottom, the thickness of the boss 43 gradually increases from top to bottom, and the limit blocks 44 are symmetrically arranged at the connecting part of the upper part of the circular arc face 422 and the vertical face 421.

[0022] In the structure, the silica gel lens in the integral structure is used to replace multiple accessories such as the light collecting cup, the light guide member and the lens, the positioning and installation are convenient, the light source formed by the light emitting chip is first condensed in the columnar part after being incident into the frustoconical part, and then is diffused in the hemispherical part, the light source is first condensed and then diffused in the same medium, the attenuation of the light in the propagation is reduced, the light utilization rate and the illumination angle are improved, and the illumination effect is ensured.

[0023] In specific use, the present application is described in combination with the drawings for the convenience of understanding the present application:

[0024] In assembly, the circuit board with the light emitting chip welded is placed on the bottom surface of the lamp holder, and then the silica gel lens is placed in the positioning groove of the support, the hemispherical part of the upper part of the silica gel lens extends out of the positioning groove, the remaining part of the silica gel lens is located in the positioning groove to form a shielding effect, the limiting block is arranged on the cylindrical part of the silica gel lens for limiting the circumferential rotation of the silica gel lens, the conical part of the lower part of the silica gel lens is elastically pressed on the circuit board, the light emitting chip is just placed in the cavity at the bottom of the conical part, the cavity is a closed space, has good waterproof and moisture-proof effect, the edge of the support can be fixed with the circuit board and the lamp holder through screws, the silica gel lens is positioned conveniently as a whole and is not easy to fall out; in work, the light source formed by the light emitting chip is shot into the silica gel lens along the inner wall of the cavity, and is shot out along the arc-shaped light-out surface, the conical part as a whole has the effect of a reflecting cup, the light source enters the conical part along the arc-shaped light-in surface and the side wall of the cavity, and then directly penetrates the conical part to enter the cylindrical part or is reflected on the outer wall of the conical part to enter the cylindrical part, the light source is totally collected in the cylindrical part, then the light source is directly shot into the hemispherical part or is reflected on the side wall of the cylindrical part to be shot into the hemispherical part, and finally is shot out in a divergent manner along the arc-shaped light-out surface of the hemispherical part.

[0025] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A low beam module of a vehicle lamp, characterized in that: The lamp comprises a lamp holder (1), a lampshade (7), a low beam module is arranged on the side of the lamp holder (1) facing the lampshade (7); The low beam module comprises a circuit board (2) arranged on the inner bottom surface of the lamp holder (1), a light emitting chip (3) is arranged on the circuit board (2), a silica gel lens (4) is arranged above the light emitting chip (3), the silica gel lens (4) is press-connected on the circuit board (2) through a support (5), the silica gel lens (4) comprises a hemispherical part (41), a columnar part (42) and an inverted frustum part (45) which are integrally connected from top to bottom, the cross section of the columnar part (42) is semicircular, vertical faces (421) and circular arc faces (422) are respectively formed on the two sides of the columnar part (42), a cavity (46) is arranged at the center of the bottom of the frustum part (45) for accommodating the light emitting chip (3), the lower part of the frustum part (45) abuts on the circuit board (2), and a closed space is formed in the cavity (46), the cavity (46) is in a conical structure, the inner top surface of the cavity (46) is arched downward to form an arc-shaped light inlet face (47), and an arc-shaped light outlet face (411) is formed on the surface of the hemispherical part (41), the light source formed by the light emitting chip (3) is incident into the silica gel lens (4) along the inner wall surface of the cavity (46) and is emitted along the arc-shaped light outlet face (411).

2. The low beam module of claim 1, wherein: The radius of the columnar part (42) gradually increases from the hemispherical part (41) to the frustum part (45), and the radius of the upper part of the columnar part (42) matches the radius of the hemispherical part (41).

3. The low beam module of claim 1, wherein: The diameter of the frustum part (45) gradually decreases from top to bottom.

4. The low beam module of claim 1, wherein: The inner diameter of the cavity (46) gradually increases from top to bottom, the central axis of the cavity (46) is inclined, and the central axis of the cavity (46) is inclined from bottom to top to the vertical face (421).

5. The low beam module of claim 1, wherein: A boss (43) is arranged at the joint of the columnar part (42) and the hemispherical part (41) and on the vertical face (421), the front-to-rear width of the boss (43) gradually decreases from top to bottom, and the thickness of the boss (43) gradually increases from top to bottom.

6. The low beam module of claim 1, wherein: Limiting blocks (44) are symmetrically arranged at the joint of the upper part of the circular arc face (422) and the vertical face (421).

7. The low beam module of claim 1, wherein: A wire hole (11) is arranged at the bottom of the lamp holder (1), a wire (6) passes through the wire hole (11) and is connected to the circuit board (2), and the other end of the wire (6) is connected to an external power supply.

8. The low beam module of claim 1, wherein: A positioning groove (51) is arranged on the support (5), the silica gel lens (4) is arranged in the positioning groove (51), and the hemispherical part (41) extends out of the positioning groove (51).

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