CN201434337Y

CN201434337Y - A reflector for a lighting device

Info

Publication number: CN201434337Y
Application number: CN2009200027352U
Authority: CN
Inventors: 辻昭久; 前田洋二
Original assignee: TSUJIKO CO Ltd
Current assignee: TSUJIKO CO Ltd
Priority date: 2008-01-22
Filing date: 2009-01-20
Publication date: 2010-03-31
Anticipated expiration: 2019-01-20
Also published as: JP3140639U

Abstract

The utility model relates to a reflector for a lighting device, the object thereof is characterized by providing a reflector for a lighting device and the lighting device with the reflector for the lighting device, wherein the reflector is used for effectively reflecting the light emitted from a cathode-ray tube light source with equal potential lines to the direction as required. The reflector for the lighting device and the lighting device with the reflector for the lighting device are characterized in that a groove is formed on a reflector made of foam plastic, the shape of the wall face ofthe groove is in a parabolic cylinder, once a cathode-ray tube and an outer electrode type discharging tube power source with equal potential lines are arranged at the focus position of the wall faceof the parabolic cylinder, the light emitted from the light source is reflected into highly effective reflecting light beam by the wall face of the parabolic cylinder.

Description

The lighting device reflector

Technical field

The utility model relates to reflector that is used in lighting device and the lighting device with this reflector.

Background technology

In recent years, in order to effectively utilize tellurian resource, energy-conservationization of seeking instrument.Luminous efficiency is a problem in lighting device especially.For light source, the high light sources of luminous efficiency such as fluorescent lamp, cathode-ray tube, outer electrode formula discharge tube have been developed.

Patent documentation 1: Japanese documentation is opened flat 5-62911 communique in fact

The utility model content

Utility model problem to be solved

But, even the luminous efficiency height of light source if can not effectively utilize the light that is sent, then can't be realized energy-conservation, efficient on the whole.Specifically, even use light source,, then can't improve the illumination efficiency of lighting device integral body if use is bad reflector of emission effciency or the reflector that is difficult to reflex to the catoptrical direction of needs with identical luminous efficiency.Particularly in, also do not find the reflector that to control reverberation effectively and can make with cheap material at present with line sources such as a plurality of cold cathode ray tubes, the outer electrode formula discharge tube lighting device of so-called area source that side by side configuration forms as light source.

Designers of the present utility model find when accessing beyond thought good parallel rays at the groove that parabolic shape is set on the foamed plastics and near its focus during the illuminating source of configuration fine rule shape.Once there was preconception to think originally: because the surface of foamed plastics has concavo-convex and can not obtain good like this parallel rays.But, in fact but obtained unexpected high-quality parallel rays.

Therefore, the purpose of this utility model is to provide the lighting device that the light from light source reflexed to the direction that needs efficiently and have a cheap manufacturing cost with reflector and the lighting device that comprises this reflector.

The means of dealing with problems

First technical scheme of the present utility model is the lighting device reflector of a kind of use at lighting device, it is characterized in that, have wall and be shaped as the groove (below be called " parabolic cylinder groove ") of parabolic cylinder, when the focal position at the described wall that is shaped as parabolic cylinder (below be called " parabolic post jamb face ") is provided with line source, from the light of described line source by described parabolic post jamb face reflection becoming parallel rays.

Alternative plan of the present utility model has following feature on the basis of first scheme: lighting device is a foamed plastics with the material of reflector.

The foamed plastics light weight has that cost is low, also has the advantage of light weight the time and do not carry out surface treatment and also stand practical reflection efficiency.

Third party's case of the present utility model has following feature on the basis of first scheme: described parabolic cylinder groove is made metallic plate or plastic plate bending.

Have following feature on the basis of any scheme of cubic case of the present utility model in first to the 3rd: described groove has been set up in parallel a plurality of.

Have following feature on the basis of any scheme of the 5th scheme of the present utility model in first to fourth: described line source is the cold cathode ray tube or the outer electrode formula discharge tube of minor diameter.

The 6th scheme of the present utility model is a kind of lighting device, comprises the described lighting device reflector of any scheme in the of the present utility model the first to the 5th.

By comprising this lighting device reflector, can produce the lighting device that thin also its whole face can irradiate uniform light efficiently.

The 7th scheme of the present utility model is the back lighting device of crystal device at a kind of night, comprises the described lighting device reflector of any scheme in the of the present utility model the first to the 5th.

By comprising this lighting device reflector, whole can irradiate uniform light efficiently when can make slimming night crystal device back lighting device.

Description of drawings

Fig. 1 illustrates lighting device that embodiment 1 of the present utility model the relates to side view that roughly constitutes with reflector;

Fig. 2 is the side view of roughly direction of the light of the focal position 114 that is illustrated in the parabolic cylinder 105 of Fig. 1 situation that is provided with line source;

Fig. 3 illustrates lighting device that embodiment 1 of the present utility model the relates to side view that roughly constitutes with reflector;

Fig. 4 is the side view of roughly direction of the light of the focal position 114 that is illustrated in the parabolic cylinder 105 of Fig. 3 situation that is provided with line source;

Fig. 5 is the stereogram of the lighting device that relates to of embodiment 1 with reflector;

Fig. 6 is the stereogram of the lighting device that relates to of embodiment 2 with reflector.

The specific embodiment

Lighting device reflector according to the utility model relates to can reflect as uniform parallel rays the light from light source to desirable direction, realize lighting device efficiently.And, particularly foamed plastics because except quality is very light, processing also is easy to, therefore can use widely.By a plurality of the practical lighting devices that relate to are disposed side by side with reflector, come whole face is shone uniformly.Therefore the parabolic shape that can realize ideal can improve reflection efficiency.

Below, with reference to accompanying drawing, illustrate to be used to implement mode of the present utility model.

[embodiment 1]

Fig. 1 illustrates lighting device that embodiment 1 of the present utility model the relates to side view that roughly constitutes with reflector.

In Fig. 1, the 103rd, lighting device is with reflector, the 115th, parabolic cylinder groove, the 105th, parabolic post jamb face.In addition, 114 is the focal position of parabolic post jamb face 105, is the position that light source is set.Lighting device is formed by foamed plastics with reflector 103.Foamed plastics cheap and processing easily, the therefore groove 105 that can have the parabolic cylinder shape with low-cost production.Lighting device is parabolical described parabolic cylinder groove 105 with being formed with more than one section on the reflector 103.These a plurality of parabolic cylinder grooves can change disposition interval or change parabolical expanded configuration according to purpose.

Fig. 2 is the side view that is illustrated in the roughly direction of light under the situation that line source is set on the focal position 114 of parabolic post jamb face 105 of Fig. 1.

In Fig. 2,124 are arranged on the line source of focal position 114.The light that illuminated device reflects to the direction that is parallel to each other with the reflector reflection in the light that 101 expression line sources 124 send.The light that does not have illuminated device to penetrate in the light that 101 expression line sources 124 send with the reflector reflection.Since parabolic post jamb face 105 be shaped as parabolic shape, so in case line source 124 is arranged on the parabolic focus position, from line source 124 irradiations and incide parabolic 105 reverberation and just become light parallel to each other 102.A is the set of parallel rays 102.

Though can think usually to be difficult to obtain efficiently reflection ray with firsting impressions are strongest, in fact obtain standing practical reflection ray owing to the air spots of foamed plastics is smooth.

And, because the foamed plastics quality is little, if therefore will be that the lighting device of material uses in lighting device with reflector with the foamed plastics, just can the light lighting device of workmanship.And because lighting device is to be to be hung in ceiling etc. under a lot of situations, so light weight is very important.

[embodiment 2]

Fig. 3 illustrates lighting device that embodiment 2 of the present utility model the relates to side view that roughly constitutes with reflector.

The lighting device that relates to for embodiment 2 of the present utility model is with the situation of reflector, and described parabolic cylinder groove is made metallic plate, plastic plate bending.Manufacturing is undertaken by for example punch process or mould process.

In Fig. 3, the 303rd, the lighting device that embodiment 2 relates to is that parabolic cylinder groove, 105 is parabolic post jamb face with reflector, 315.In addition, 114 is the focal position of parabolic post jamb face 105, is the position that light source is set.Lighting device for example is made of metallic plate with reflector 303.

Fig. 4 is the side view of roughly direction that is illustrated in the light of the situation that line source is set on the focal position 114 of parabolic post jamb face 105 of Fig. 2.

In Fig. 4, the light that illuminated device reflects to the direction that is parallel to each other with the reflector reflection in the light that 102 expression line sources 124 send.The light that does not have illuminated device to penetrate in the light that 101 expression line sources 124 send with the reflector reflection.Since parabolic post jamb face 105 be shaped as parabolic shape, so in case line source 124 is arranged on the parabolic focus position, from line source 124 irradiations and incide parabolic 105 reverberation and just become light parallel to each other 102.A is the set of parallel rays 102.

Fig. 5 is the stereogram of the lighting device that relates to of embodiment 1 with reflector.

Can obtain reflection ray more efficiently by using little cold cathode ray tube or the outer electrode formula discharge tube of diameter.

Claims

1. a lighting device reflector is characterized in that,

Have wall be shaped as parabolic cylinder groove, be the parabolic cylinder groove, when at the described wall that is shaped as parabolic cylinder, be the focal position of parabolic post jamb face when line source is set, from the light of described line source by described parabolic post jamb face reflection becoming parallel rays.

2. lighting device reflector as claimed in claim 1 is characterized in that,

Lighting device is a foamed plastics with the material of reflector.

3. lighting device reflector as claimed in claim 1 is characterized in that,

Described parabolic cylinder groove is made metallic plate or plastic plate bending.

4. as each the described lighting device reflector in the claim 1 to 3, it is characterized in that described groove has been set up in parallel a plurality of.

5. as each the described lighting device reflector in the claim 1 to 3, it is characterized in that described line source is the cold cathode ray tube or the outer electrode formula discharge tube of minor diameter.

6. lighting device reflector as claimed in claim 4 is characterized in that, described line source is the cold cathode ray tube or the outer electrode formula discharge tube of minor diameter.

7. a lighting device is characterized in that, has as each the described lighting device reflector in the claim 1 to 6.

8. the back lighting device of a liquid crystal indicator is characterized in that, has as each the described lighting device reflector in the claim 1 to 6.