CN207815206U - A kind of light guide position lamp using total reflection entering light - Google Patents

Abstract

The utility model discloses a kind of light guide position lamps using total reflection entering light, including LED light group and light guide；It is characterized in that, the LED light group is located at light guide end rear；LED light group includes LED light；The end throw light that LED light passes through the light guide；An inclined surface is formed on the front end face of the end of the light guide；The incident angle of the throw light in the inclined plane meets the condition that throw light forms total reflection on inclined surface, so that throw light is conducted along lightguide length direction.It is preferred that the back side of light guide along its length is formed with zigzag interrupted shape reflecting surface.The utility model has the beneficial effects that it is simple in structure, compact, fault point is few, low energy consumption, saves arrangement space, taillight lights that luminous spacing is small, and the dark space of light guide is few, and evenly, moulding is more attractive for visual effect, and indicating effect is apparent.

Description

A light guide position light using total reflection light input

technical field

The utility model relates to a vehicle lamp structure, in particular to a light guiding position lamp utilizing total reflection light input.

Background technique

Car lights include headlights, tail lights and position lights. Existing car lights include halogen lamps, LED lights and the like. The car light is not only the functional part of the vehicle, but also its appearance. The shape of a car light is like human eyes, which can not only convey its spirit and connotation, but also the finishing touch of the whole car design, reflecting the car's taste. The significance of its shape design is to show the temperament and culture of the car. Due to the superior characteristics of low energy consumption and high brightness, LED lights have been used more and more widely. At present, the position lights of most vehicles have generally adopted light guide LED lights, including LED light sets and light guides. The light guides are illuminated by irradiating LED light into the light guides, and the light guides provide light display position information. The LED lamp group is composed of multiple LED lamps and PCB boards, and the light is transmitted into the light guide through a coupler between the light guide and the LED lamp group. However, this method increases the coupler components, which not only complicates the structure, but also increases failure points and energy loss. For this reason, further improvement needs to be carried out to existing LED vehicle position lamp.

Contents of the invention

The purpose of this utility model is to address the deficiencies of the prior art and provide a light guide position light that utilizes total reflection to enter light. The position light forms a light total reflection structure at the light incident end of the light guide, so that all incident light is transmitted in the light guide. , thereby avoiding setting up a coupler, simplifying and compacting the lamp structure, reducing failure points, saving energy consumption, and further improving the excellent characteristics of LED lamps.

In order to achieve the above object, the utility model adopts the following technical solutions.

A light guide position light utilizing total reflection light, comprising an LED light group and a light guide; it is characterized in that the LED light group is located behind the end of the light guide; the LED light group includes LED lights; the LED light passes through the end of the light guide Projecting light; an inclined surface is formed on the front end surface of the end of the light guide; the incident angle of the projecting light on the inclined surface satisfies the condition that the projecting light forms total reflection on the inclined surface, so that the projecting light along the length of the light guide direction conduction.

In the utility model adopting the foregoing technical solution, by setting a reflective inclined surface at the incident end of the light guide, the inclined surface forms a specific incident angle with the projected light of the LED lamp, so that the incident angle of the projected light on the inclined surface satisfies the requirements of the projected light on the slope. The condition of total reflection on the surface provides the most basic conditions for the transmission of projected light along the length of the light guide. Compared with the existing light-guide LED lights with couplers, the structure is simplified and compacted, and the failure points and energy consumption are reduced. The shape is more beautiful, and the indication effect is obvious; the excellent characteristics of the light guide LED position light are further improved.

Preferably, the LED lamp group further includes a PCB board; the LED lamp is arranged through the PCB board, and the axis of the LED lamp is perpendicular to the installation reference plane of the PCB board; the light guide has an installation check surface, and the installation check surface is aligned with the PCB board The installation reference plane of the board is parallel; the inclined surface and the installation checking surface are inclined at an angle of α, and the included angle of α is 25°-35°. To facilitate the light guide installation and angle check, and ensure that the total reflection can be formed after installation at the correct position and angle.

Further preferably, the PCB board is fixedly connected to the housing, and the housing has a cavity structure, and the mouth of the cavity of the housing is fixedly connected to the lamp housing; the PCB board is arranged between the decorative ring and the housing, and the decorative ring Located at the back of the light guide, the light guide is fixedly connected with the decorative ring and the light shield through screws, and the light shield forms a shield for the end of the light guide and the LED lamp. Thus, a vehicle position lamp with stable structure and obvious indicating effect is formed.

Preferably, a zigzag intermittent reflective surface is formed on the back of the light guide along the length direction. The light is continuously transmitted in the length direction of the light guide to achieve the purpose of lighting up the entire light guide.

The utility model has the beneficial effects of simple and compact structure, less fault points, low energy consumption, saving layout space, small light-emitting spacing of the tail lights, less dark areas of the light guide, more uniform visual effect, more beautiful shape, and better indication effect. obvious.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a sectional view of A-A in Fig. 1 of the present utility model, in which, the direction of the arrow starting from the LED lamp is the propagation direction of the light in the light guide.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings, but the utility model is not limited to the scope of the embodiments.

Referring to Fig. 1 and Fig. 2, a light guide position light utilizing total reflection light input includes an LED lamp group and a light guide 5; it is characterized in that the LED lamp group is located behind the end of the light guide 5; the LED lamp group includes an LED lamp 4 The LED lamp 4 projects light through the end of the light guide 5; an inclined surface 5a is formed on the front end surface of the end of the light guide 5; The condition of total reflection is formed on the surface, so that the projection light is transmitted along the length direction of the light guide 5 .

Wherein, the LED lamp group also includes a PCB board 7; the LED lamp 4 is arranged through the PCB board 7, and the axis of the LED lamp 4 is perpendicular to the installation reference plane of the PCB board 7; the light guide 5 has an installation check surface 5b, the The installation calibration surface 5b is parallel to the installation reference plane of the PCB 7; the inclined surface 5a and the installation calibration surface 5b are inclined at an angle α, and the angle α is 25°-35°. The PCB board 7 is fixedly connected to the housing 2, the housing 2 has a cavity structure, and the mouth of the cavity of the housing 2 is fixedly connected to the lamp housing 1; the PCB board 7 is arranged between the bezel 6 and the housing 2 Between, the bezel 6 is located behind the light guide 5, the light guide 5 is fixedly connected with the bezel 6 and the light shield 3 through screws, and the light shield 3 forms a shield for the end of the light guide 5 and the LED lamp 4. The back surface of the light guide 5 along the length direction is formed with a zigzag discontinuous reflective surface.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (4)

1. a kind of light guide position lamp using total reflection entering light, including LED light group and light guide (5)；It is characterized in that, the LED Lamp group is located at light guide (5) end rear；LED light group includes LED light (4)；LED light (4) is projected by the end of the light guide (5) Light；It is formed with an inclined surface (5a) on the front end face of the end of the light guide (5)；The throw light is in the inclined surface (5a) On incident angle meet the condition that throw light forms total reflection on inclined surface so that throw light is along light guide (5) length It conducts in direction.

2. the light guide position lamp according to claim 1 using total reflection entering light, which is characterized in that the LED light group is also Including pcb board (7)；The LED light (4) is arranged by pcb board (7), installation base of LED light (4) axis perpendicular to pcb board (7) Quasi- face；The light guide (5) has installation check face (5b), which checks face (5b) and the datum clamp face of pcb board (7) is flat Row；The inclined surface (5a) tilts with the installation check face (5b) in α angle shapes, which is 25 °~35 °.

3. the light guide position lamp according to claim 2 using total reflection entering light, which is characterized in that the pcb board (7) is solid Surely on connection shell (2), shell (2) is in curved cavity, and the cavity oral area of shell (2) is fixedly connected with lamp housing (1)；The PCB Plate (7) is located between decorative circle (6) and shell (2), and decorative circle (6) is located at the light guide (5) rear, and light guide (5) passes through screw and decorations Circle (6) is fixedly connected with hood (3), and the light guide (5) end and the LED light (4) are blocked in hood (3) formation.

4. the light guide position lamp according to claim 1 using total reflection entering light, which is characterized in that light guide (5) edge The back side of length direction is formed with zigzag interrupted shape reflecting surface.