CN104678736A

CN104678736A - Light guide ring for dial illumination

Info

Publication number: CN104678736A
Application number: CN201510119516.2A
Authority: CN
Inventors: 徐勤东; 冯钢; 吕端秋; 赵立欣; 柳辉
Original assignee: Aerospace Hi Tech Holding Group Co Ltd
Current assignee: Aerospace Hi Tech Holding Group Co Ltd
Priority date: 2015-03-18
Filing date: 2015-03-18
Publication date: 2015-06-03

Abstract

The invention discloses a light guide ring for dial illumination, belongs to the technical field of dial illumination, and aims to solve a problem of low utilization rate of light due to a fact that existing dial illumination needs to adopt at least two light-emitting diodes as light sources. The light guide ring comprises a bent tube and a light guide tube, wherein the light guide tube forms an annular light guide ring, two ends of the light guide tube are simultaneously communicated with a tail end of the bent tube, a head end of the bent tube is a light inlet end surface, and a toothed opening with an outward sharp end is formed in an inner ring connecting point at the joint of the two ends of the light guide tube; N astigmatic openings are formed in an outer surface of an inner ring of the light guide tube, the opening depths of the N astigmatic openings are gradually increased to two sides along the circumference from the toothed opening, and N is an integer greater than 16 and smaller than 32. The light guide ring is used for dial illumination.

Description

The guide-lighting ring of dial illuminance

Technical field

The present invention relates to the guide-lighting ring of dial illuminance, belong to dial illuminance technical field.

Background technology

Existing dial illumination system, needs to use multiple light source to meet brightness of illumination requirement, such as, uses at least two LED to throw light on, otherwise brightness can wretched insufficiency.

In recent years, occurred the guide-lighting ring for dial illuminance, it, by by the light of two light emitting diodes homogenous diffusion in ring-shaped light path, makes light be uniformly distributed in guide-lighting ring, meets the lighting requirement of dial plate.But this guide-lighting ring needs within it ring surface and external annular surface to design the breach meeting scattering requirement respectively, the dimensional parameters which results in guide-lighting ring is too much, the problem of processing technology complexity.

Summary of the invention

The present invention seeks to need to adopt at least two light emitting diodes as light source to solve existing dial illuminance, the problem that the utilization factor of light is low, provides the guide-lighting ring of a kind of dial illuminance.

The guide-lighting ring of dial illuminance of the present invention, it comprises bend pipe and light pipe, light pipe forms the guide-lighting ring of annular, the two ends of described light pipe are communicated with the end of bend pipe simultaneously, the head end of bend pipe is light inlet face, the profile of tooth gap that the inner ring tie point place of the connection, two ends of light pipe tapers off to a point outside;

The interior ring outer surface of light pipe arranges N number of astigmatism gap, the gap degree of depth of N number of astigmatism gap by profile of tooth gap circumferentially both sides in increasing progressively gradually, N be greater than 16 and be less than 32 integer.

The angle of adjacent two astigmatism gap centers and the light pipe line of centres is 15 ° to 17.4 °.

The center of any one astigmatism gap that the center of profile of tooth gap is adjacent and the angle of the light pipe line of centres are 15 ° to 17.4 °.

The gap depth range of described astigmatism gap is 1mm to 2mm.

By counterclockwise, between first astigmatism gap initial by profile of tooth gap and second astigmatism gap, then two additional gap are set.

By counterclockwise, between the 7th the astigmatism gap initial by profile of tooth gap and the 8th astigmatism gap, a more additional gap is set.

The gap depth range of described additional gap is 1mm to 2mm.

The guide-lighting ring of dial illuminance of the present invention is when reality uses, and only need a LED light source, light is transmitted on the light inlet face of bend pipe head end by this light source, and this bend pipe directs light in light pipe, realizes illumination.

Advantage of the present invention: the present invention only needs employing LED to provide light source, make this light source by the gap design on light pipe, form a perfect scattered light line structure, thus achieve and only gap is set at the inner ring surface of light pipe, even if the object of the high efficiency transmission of light, it can meet the brightness requirement of dial illuminance, improve light pipe efficiency and cost-saving while, simplify the processing technology of light pipe.

The present invention makes brightness of illumination uniformity, the luminance difference of its effective coverage within 5%,

Accompanying drawing explanation

Fig. 1 is the structural representation of the guide-lighting ring of dial illuminance of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the upward view of Fig. 1;

Fig. 4 is the perspective view of the guide-lighting ring of dial illuminance of the present invention.

Embodiment

Embodiment one: present embodiment is described below in conjunction with Fig. 1 to Fig. 4, the guide-lighting ring of dial illuminance described in present embodiment, it comprises bend pipe 1 and light pipe 2, light pipe 2 forms the guide-lighting ring of annular, the two ends of described light pipe 2 are communicated with the end of bend pipe 1 simultaneously, the head end of bend pipe 1 is light inlet face, the profile of tooth gap 2-1 that the inner ring tie point place of the connection, two ends of light pipe 2 tapers off to a point outside;

The interior ring outer surface of light pipe 2 is arranged N number of astigmatism gap 2-2, the gap degree of depth of N number of astigmatism gap 2-2 by profile of tooth gap 2-1 circumferentially both sides in increasing progressively gradually, N be greater than 16 and be less than 32 integer.

In present embodiment, described bend pipe 1 about becomes semicircular ring shape, and its two ends extend respectively to outside.Light pipe 2 adopts light total reflection principle, and source light enters bend pipe 1 from light inlet face, enter light pipe 2, then astigmatism gap 2-2 spaced apart on light pipe 2 is to the reflection of light, enters lighting space, illuminates dial plate through bend pipe 1 generation reflection and deflection.

Astigmatism gap 2-2 in light pipe 2, ring outer surface is non-homogeneous setting, to meet the astigmatism prescriptions to light source.

Embodiment two: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further embodiment one, and the angle of adjacent two astigmatism gap 2-2 centers and light pipe 2 line of centres is 15 ° to 17.4 °.

Embodiment three: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further embodiment one or two, and the center of any one astigmatism gap 2-2 that the center of profile of tooth gap 2-1 is adjacent and the angle of light pipe 2 line of centres are 15 ° to 17.4 °.

Embodiment four: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further embodiment one, two or three, and the gap depth range of described astigmatism gap 2-2 is 1mm to 2mm.

Embodiment five: present embodiment is described below in conjunction with Fig. 1, present embodiment is described further embodiment one, two, three or four, by counterclockwise, between first astigmatism gap 2-2 and second the astigmatism gap 2-2 initial by profile of tooth gap 2-1, then two additional gap 2-3 are set.

Embodiment six: present embodiment is described below in conjunction with Fig. 1, present embodiment further illustrates embodiment five, by counterclockwise, between the 7th astigmatism gap 2-2 and the 8th the astigmatism gap 2-2 initial by profile of tooth gap 2-1, a more additional gap 2-3 is set.

Additional gap 2-3 needs to arrange according to the paths situation of reality, with supplementary light.

Embodiment seven: present embodiment is described below in conjunction with Fig. 1, present embodiment further illustrates embodiment five or six, and the gap depth range of described additional gap 2-3 is 1mm to 2mm.

In the present invention, light pipe 2 adopts transparent acrylic PMMA material to make, and its outer annular diameter is 72mm, and the pipeline diameter of light pipe 2 is 4mm.In astigmatism gap 2-2, the angle of general adjacent gap center and light pipe 2 circle center line connecting is 17.4 °, and indivedual adjacent gap center is not consistent with the angle of light pipe 2 circle center line connecting.And gap is relative to its center line, part is symmetrical, and part is asymmetric.

Claims

1. the guide-lighting ring of dial illuminance, it is characterized in that, it comprises bend pipe (1) and light pipe (2), light pipe (2) forms the guide-lighting ring of annular, the two ends of described light pipe (2) are communicated with the end of bend pipe (1) simultaneously, the head end of bend pipe (1) is light inlet face, the profile of tooth gap (2-1) that the inner ring tie point place of the connection, two ends of light pipe (2) tapers off to a point outside;

The interior ring outer surface of light pipe (2) is arranged N number of astigmatism gap (2-2), the gap degree of depth of N number of astigmatism gap (2-2) by profile of tooth gap (2-1) circumferentially both sides in increasing progressively gradually, N be greater than 16 and be less than 32 integer.

2. the guide-lighting ring of dial illuminance according to claim 1, it is characterized in that, the angle of adjacent two astigmatism gap (2-2) centers and light pipe (2) line of centres is 15 ° to 17.4 °.

3. the guide-lighting ring of dial illuminance according to claim 1, it is characterized in that, the center of any one astigmatism gap (2-2) that the center of profile of tooth gap (2-1) is adjacent and the angle of light pipe (2) line of centres are 15 ° to 17.4 °.

4. the guide-lighting ring of dial illuminance according to claim 1, it is characterized in that, the gap depth range of described astigmatism gap (2-2) is 1mm to 2mm.

5. the guide-lighting ring of the dial illuminance according to claim 1,2,3 or 4, it is characterized in that, by counterclockwise, between first astigmatism gap (2-2) initial by profile of tooth gap (2-1) and second astigmatism gap (2-2), then two additional gap (2-3) are set.

6. the guide-lighting ring of dial illuminance according to claim 5, it is characterized in that, by counterclockwise, between the 7th the astigmatism gap (2-2) initial by profile of tooth gap (2-1) and the 8th astigmatism gap (2-2), a more additional gap (2-3) is set.

7. the guide-lighting ring of dial illuminance according to claim 6, it is characterized in that, the gap depth range of described additional gap (2-3) is 1mm to 2mm.