Light distribution structure of projection lamp

Abstract

The utility model discloses a light distribution structure of a projection lamp, which belongs to the technical field of projection lamps and comprises a thick-wall light shielding plate, the upper end face of the thick-wall light shielding plate is a light shielding face, and the side face of the thick-wall light shielding plate is a distance light emitting face. A light condenser is arranged at the lower end of the thick-wall shading plate, a circuit board is arranged at the lower end of the light condenser, and an LED particle lamp is arranged on the circuit board and located at the lower end of the light condenser. Switching of low beam and high beam can be achieved, the light shading and light gathering effects are achieved, the overall structure is simple, and the manufacturing cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of projection lamp, concretely relates to a projection lamp light distribution structure. BACKGROUND

[0002] The statements in this section merely provide background information related to the utility model and do not necessarily constitute prior art.

[0003] The automobile projection lamp module is mainly divided into single-function projection lamp and multi-function projection lamp. The most common multi-function projection lamp is double-function projection lamp, containing high beam and low beam, that is, the projection lamp has double light function, and the projection lamp module realizes the double light function by electromagnetic valve and light shield plate cooperation, and the high beam and low beam reflectors are designed separately, when switching the high beam and low beam, the light shield plate is moved to the low beam reflector position or the high beam reflector position through the electromagnetic valve, and then the switching between the high beam and low beam is realized. The cooperation and positioning of the light shield plate of this structure are complex, resulting in complex overall structure and high manufacturing cost. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model provides a projection lamp light distribution structure, which can realize the switching of high beam and low beam, play the roles of light shielding and light condensing, has simple overall structure and effectively reduces the manufacturing cost.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A projection lamp light distribution structure, comprising a thick-wall light shield plate, the upper end face of the thick-wall light shield plate is a light shielding face, and the side face of the thick-wall light shield plate is a high beam light emitting face; a light condenser is arranged at the lower end of the thick-wall light shield plate, a circuit board is arranged at the lower end of the light condenser, an LED particle lamp is arranged on the circuit board, and the LED particle lamp is located at the lower end of the light condenser.

[0007] Further, the thick-wall light shield plate comprises a first light shielding piece and a second light shielding piece, and the first light shielding piece and the second light shielding piece are integrated structures.

[0008] Further, the light shielding face comprises a first light shielding face and a second light shielding face.

[0009] Further, the first light shielding face is located on the upper surface of the first light shielding piece, and the second light shielding face is located on the upper surface of the second light shielding piece.

[0010] Further, the thickness of the second light shielding piece is greater than the thickness of the first light shielding piece.

[0011] Further, a plurality of round holes are arranged at one end of the first light shielding piece and the second light shielding piece.

[0012] Further, the high beam light emitting face is an arc face.

[0013] Further, the light concentrator is fixedly connected with the lower surface of the thick-wall light shielding plate, and a plurality of light concentrators are arranged at intervals.

[0014] Further, the LED particle lamp is arranged at intervals.

[0015] Further, the LED particle lamp is arranged at intervals.

[0016] Compared with the prior art, the projection lamp light distribution structure has the advantages and positive effects that:

[0017] The thick-wall light shielding plate has a light shielding surface, the light shielding surface comprises a first light shielding surface and a second light shielding surface, the light shielding is realized through cooperation of the first light shielding surface and the second light shielding surface, and then the low beam light type is realized, that is, the thick-wall light shielding plate plays a light shielding role according to the light source position when the low beam is lighted; the light of the LED is focused through the light concentrator on the thick-wall light shielding plate, the focused light is emitted through the thick-wall light shielding plate, the light collecting and guiding role is played when the high beam is lighted, and then the high beam light type is realized, and finally the switching of the low beam and the high beam is realized, and the light shielding and light collecting roles are played.

[0018] The original metal light shielding plate, the high beam reflector and the electromagnetic valve are removed, the switching of the high beam and the low beam is realized through cooperation of the thick-wall light shielding plate, the light concentrator and the LED particle lamp, the overall structure is simple, and the manufacturing cost is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings constituting a part of the specification of the present application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0020] Figure 1 is a perspective view of the light distribution structure of the projection lamp of the present application;

[0021] Figure 2 is a front view of the light distribution structure of the projection lamp of the present application;

[0022] Figure 3 is a top view of the light distribution structure of the projection lamp of the present application;

[0023] In the drawings: 1, thick-wall light shielding plate; 11, first light shielding piece; 12, second light shielding piece; 2, first light shielding surface; 3, light concentrator; 4, circuit board; 5, LED particle lamp; 6, high beam light emitting surface; 7, second light shielding surface. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed description is exemplary and is intended to further explain the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0025] The existing projection lamp module needs to realize the dual light function by cooperating with the electromagnetic valve and the light shield plate, and the near light and the far light reflector are designed separately. When switching between the near light and the far light, the electromagnetic valve moves the light shield plate to the near light reflector position or the far light reflector position, thereby realizing the switching between the near light and the far light. The cooperation and positioning of the light shield plate in this structure are complex, resulting in a complex overall structure and high manufacturing cost.

[0026] The present application will be described in detail below with reference to the drawings. The projection lamp light distribution structure disclosed in the present embodiment comprises a thick-wall light shield plate 1, the upper end surface of the thick-wall light shield plate 1 is a light shielding surface, and the side surface of the thick-wall light shield plate 1 is a far light emitting surface 6, as shown in the figure. Figure 1 The lower end of the thick-wall light shield plate 1 is provided with a condenser 3, the lower end of the condenser 3 is provided with a circuit board 4, the circuit board 4 is provided with an LED particle lamp 5, and the LED particle lamp 5 is located at the lower end of the condenser 3.

[0027] The thick-wall light shield plate 1 has a light shielding surface, which comprises a first light shielding surface 2 and a second light shielding surface 7. The light shielding is realized by the cooperation of the first light shielding surface 2 and the second light shielding surface 7, thereby realizing the near light type. When the thick-wall light shield plate 1 is lit in the near light, it plays a light shielding role according to the position of the light source. The light of the LED is focused by the condenser 3 on the thick-wall light shield plate 1, and the focused light is emitted through the thick-wall light shield plate 1, which plays a role of light condensation and light guidance when the far light is lit, thereby realizing the far light type. Finally, the switching between the near light and the far light is realized, and the roles of light shielding and light condensation are played.

[0028] The light of the near light source is emitted on the upper surface of the thick-wall light shield plate. Since the light shield plate has a certain thickness, the unusable light is blocked, partially absorbed, partially reflected and refracted to the harmless area, forming a clear light-dark cutoff line. The far light source is vertically placed with the thick-wall condenser. The light enters the light-dense medium from the light-lean medium, forms total reflection in the thick-wall light shield plate, and is finally guided out of the light-emitting surface to form far light illumination.

[0029] The condenser is a prior art, which is called a collimating lens. The light source is placed at the focal point, the light is transmitted in the lens, and the lens interface of the parabolic structure can reflect the light emitted by the light source, so that the light is parallelly guided out of the light. The near light and the far light have different light sources and ports, and the switching is controlled by the on-off of the different ports.

[0030] The thick-wall light shielding plate 1 comprises a first light shielding piece 11 and a second light shielding piece 12, and the first light shielding piece 11 and the second light shielding piece 12 are in an integrated structure. The light shielding surface comprises a first light shielding surface 2 and a second light shielding surface 7. The first light shielding surface 2 is located on the upper surface of the first light shielding piece 11, and the second light shielding surface 7 is located on the upper surface of the second light shielding piece 12. The thickness of the second light shielding piece 12 is greater than the thickness of the first light shielding piece 11. The thick-wall light shielding plate 1 is made of plastic material, the end portions of the first light shielding surface 2 and the second light shielding surface 7 are connected, and the first light shielding surface 2 and the second light shielding surface 7 jointly cooperate to achieve the light shielding effect, thereby realizing the low beam light type.

[0031] As shown in Figure 3 , a plurality of round holes are arranged at one end of the first light shielding piece 11 and the second light shielding piece 12. The high beam light emitting surface 6 is an arc surface. The round holes are the light distribution structures of the light concentrator, so that the light of the light source can enter the light concentrator for transmission in a high efficiency without reflection, and is directed into parallel light.

[0032] The light concentrator 3 is fixedly connected to the lower surface of the thick-wall light shielding plate 1, and a plurality of light concentrators 3 are arranged at intervals. The light concentrator 3 focuses the light of the LED, and the focused light is emitted through the thick-wall light shielding plate 1, thereby playing a role of light concentration and light guide when the high beam is lighted. Each light concentrator 3 performs light concentration and light guide on one LED lamp.

[0033] A plurality of LED particle lamps 5 are arranged at intervals. The LED particle lamp 5 is installed on the circuit board 4, and the LED particle lamp 5 is electrically connected to the circuit board 4. The LED particle lamp 5 is an LED lamp, and the LED is a light-emitting diode, which is a solid-state semiconductor device capable of converting electrical energy into visible light. The core of the LED is a semiconductor wafer, one end of which is attached to a support, one end is the negative electrode, and the other end is connected to the positive electrode of the power supply, so that the entire wafer is encapsulated by epoxy resin.

[0034] The original metal light shielding plate, high beam reflector and electromagnetic valve are removed, and the high beam and low beam switching is realized through the cooperation of the thick-wall light shielding plate 1, the light concentrator 3 and the LED particle lamp 5, so that the overall structure is simple, and the manufacturing cost is effectively reduced.

[0035] Although the specific embodiments of the utility model are described in combination with the drawings, the description is not a limitation on the protection scope of the utility model, and those skilled in the art should understand that various modifications or deformations made by those skilled in the art on the basis of the technical solutions of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. A projection lamp light distribution structure, characterized in that: It includes a thick-walled light shielding plate, the upper end surface of the thick-walled light shielding plate is a light shielding surface, and the side surface of the thick-walled light shielding plate is a high-beam light-emitting surface; a concentrator is set at the lower end of the thick-walled light shielding plate, a circuit board is set at the lower end of the concentrator, an LED particle lamp is set on the circuit board, and the LED particle lamp is located at the lower end of the concentrator.

2. The light distribution structure of a projection lamp according to claim 1, wherein: The thick-walled light shielding plate includes a first light shielding member and a second light shielding member, and the first light shielding member and the second light shielding member are an integrated structure.

3. The light distribution structure of a projection lamp according to claim 2, wherein: The light-shielding surface includes a first light-shielding surface and a second light-shielding surface.

4. The light distribution structure of a projection lamp according to claim 3, wherein: The first light-shielding surface is located on the upper surface of the first light-shielding member, and the second light-shielding surface is located on the upper surface of the second light-shielding member.

5. The light distribution structure of a projection lamp according to claim 3, wherein: The thickness of the second light shielding member is greater than that of the first light shielding member.

6. The light distribution structure of a projection lamp according to claim 3, wherein: A plurality of circular holes are provided at intervals on one end of the first light shielding member and the second light shielding member.

7. The light distribution structure of a projection lamp according to claim 1, wherein: The high beam emitting surface is a curved surface.

8. The light distribution structure of a projection lamp according to claim 1, wherein: The concentrator is fixedly connected to the lower surface of the thick-walled light shielding plate, and a plurality of concentrators are arranged at intervals.

9. The light distribution structure of a projection lamp according to claim 1, wherein: The LED particle lamps are arranged in a plurality of intervals.

10. The light distribution structure of a projection lamp according to claim 9, characterized in that: The LED particle lamp is installed on a circuit board, and the LED particle lamp is electrically connected to the circuit board.

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