CN201407520Y

CN201407520Y - Annular light source lamp

Info

Publication number: CN201407520Y
Application number: CN2009200725284U
Authority: CN
Inventors: 郭超; 陈育明; 李维德
Original assignee: Shanghai Hongyuan Lighting & Electric Equipment Co Ltd
Current assignee: Shanghai Hongyuan Lighting & Electric Equipment Co Ltd
Priority date: 2009-05-19
Filing date: 2009-05-19
Publication date: 2010-02-17
Anticipated expiration: 2019-05-19

Abstract

The utility model relates to an annular light source lamp, which comprises an annular light source and a reflector lamp shade, the reflecting of the reflector lamp shade is a curve rotating surface which is formed through rotating an optically-designed arch curve corresponding to a central shaft by 360 degrees, thereby forming an annular reflecting cavity. An annular light source is located in theannular reflecting cavity, and the central shaft penetrates through the geometric center of the annular light source. The annular light source lamp of the utility model improves the light energy availability ratio of the lamp, increases the lighting range of the lamp, and is suitable for the annular light-emitting body whose head and tail are connected and a light-emitting body group which is distributed round a central shaft of the light-emitting body group in an annular shape.

Description

The annular light source light fixture

Technical field

The utility model relates to lighting field, relates in particular to a kind of annular light source light fixture.

Background technology

In the prior art, the lampshade of annular light source lamp is a convex surface, as shown in Figure 1, the central point A of lampshade 1 is the peak on whole lampshade 1 outer surface, annular light source 2 is arranged in the lampshade 1, and the light (representing with three light a, b, c among the figure) that annular light source 2 penetrates penetrates lampshade 1 after lampshade 1 inner surface repeatedly reflects.The shortcoming of annular light source lamp is in the prior art, and the light that light source penetrates will could penetrate lampshade through the reflection more than twice or twice, because the certain luminous energy of reflection meeting loss each time, so the luminous energy utilization rate of this light fixture is low.

The utility model content

The purpose of this utility model is to provide a kind of annular light source light fixture, and the light that light source penetrates just can penetrate lampshade through after the primary event, and the luminous energy loss is little, has improved the luminous energy utilization rate of light fixture.

To achieve the above object, the utility model provides a kind of annular light source light fixture, comprises annular light source and lampshade, and the reflective surface of lampshade is a curved-line surface of revolution, promptly by revolving three-sixth turn through the relative central shaft of ogive curve of optical design and form, thereby form an annular reflection chamber; And described annular light source is positioned at described annular reflection chamber, and described central shaft passes the geometric center of described annular light source.

In the above-mentioned light fixture, the geometric center direction of the described annular light source of mediad of described lampshade depression forms one about the axisymmetric concave curved surface in described center.

In the above-mentioned light fixture, the end of described concave curved surface is most advanced and sophisticated.

In the above-mentioned light fixture, the end of described concave curved surface is a flush end.

In the above-mentioned light fixture, the end of described concave curved surface is positioned at the below of the geometric center of described annular light source.

In the above-mentioned light fixture, the reflective surface of described reflector is a reflectivity more than or equal to 60% high reflectance face.

In the above-mentioned light fixture, the outermost of described annular light source to the minimum distance d of lampshade more than or equal to central shaft to 10% of the distance D of lampshade, i.e. d 〉=0.1D.

Annular light source light fixture of the present utility model, the reflective surface of lampshade is a curved-line surface of revolution, promptly by revolving three-sixth turn through the relative central shaft of ogive curve of optical design and forming, the central shaft of lampshade overlaps with the central shaft of annular light source, the light that makes annular light source penetrate just can penetrate reflector after the reflective surface primary event of lampshade,, can not significantly reduce luminous energy, improve the efficiency of light energy utilization of light fixture greatly because of the reflection loss through repeatedly reflection; And the reflective surface of lampshade forms the annular reflection chamber, and annular light source is arranged in the annular reflection chamber, can increase the irradiation scope of light fixture greatly; The reflective surface of lampshade is the high reflectance face, can reduce luminous energy because of the refraction loss, has improved the efficiency of light energy utilization of light fixture.

Description of drawings

Annular light source light fixture of the present utility model is provided by following embodiment and accompanying drawing.

Fig. 1 is the sectional view of light fixture in the prior art.

Fig. 2 is the stereogram of the utility model annular light source light fixture.

Fig. 3 is the sectional view of the utility model annular light source light fixture.

Fig. 4 is the light path schematic diagram of the utility model annular light source light fixture.

The specific embodiment

Below with reference to Fig. 2～Fig. 4 annular light source light fixture of the present utility model is described in further detail.

As shown in Figure 2, the utility model annular light source light fixture comprises lampshade 3 and the annular light source 2 that is arranged in the lampshade 3.

As shown in Figure 3, the reflective surface of lampshade 3 is a curved-line surface of revolution, promptly by revolving three-sixth turn through the ogive curve 31 relative central shafts 32 of optical design and form, thereby forms an annular reflection chamber; And annular light source 2 just is positioned at this annular reflection chamber, and central shaft 32 passes the geometric center of annular light source 2.

One end of described ogive curve 31 can be positioned on the central shaft 32, and like this, ogive curve 31 is that fulcrum is rotated and forms curved-line surface of revolution to be positioned at end points on the central shaft 32 just.So the central authorities of lampshade 3 just cave in down to the geometric center direction of annular light source 2, form a concave curved surface 34 about central shaft 32 symmetries, at this moment, the end 33 of concave curved surface 34 is most advanced and sophisticated (as shown in Figure 2).Certainly, this end also can be positioned at outside the central shaft 32, and the end 33 of concave curved surface 34 is flush end (as shown in Figure 3) like this.In addition, the end 33 of concave curved surface 34 often is positioned at the below of the geometric center B of annular light source 2.

In addition, the reflective surface of lampshade 3 is the high reflectance face, and its reflectivity is more than or equal to 60%.For improving the reflectivity of lampshade 3 reflective surfaces, can polish oxidation or vacuum coating processing to reflective surface, also can directly adopt the wafer processes of highly reflective material to form.

Safe in utilization for guaranteeing, the outermost of described annular light source 2 to the minimum distance d of lampshade 3 more than or equal to central shaft 32 to 10% of the distance D of lampshade 3, i.e. d 〉=0.1D.

Above-mentioned annular light source 2 can be end to end ring-type illuminator, also can be the illuminator group that distributes ringwise around its central shaft 32.

As shown in Figure 4, the light (representing with four light a, b, c, e among the figure) that the annular light source 2 of the utility model light fixture penetrates just penetrates lampshade 3 after reflective surface reflection once, reduced the luminous energy loss, improved the efficiency of light energy utilization of light fixture, because the reflective surface of the lampshade 3 of the utility model light fixture forms the annular reflection chamber, increased the illumination range of light fixture again.

Claims

1, a kind of light fixture comprises annular light source, it is characterized in that, also comprises:

Lampshade, its reflective surface are curved-line surface of revolution, promptly by revolving three-sixth turn through the relative central shaft of ogive curve of optical design and form, thereby form an annular reflection chamber; And

Described annular light source is positioned at described annular reflection chamber, and described central shaft passes the geometric center of described annular light source.

2. light fixture as claimed in claim 1 is characterized in that, the geometric center direction depression of the described annular light source of mediad of described lampshade forms one about the axisymmetric concave curved surface in described center.

3. light fixture as claimed in claim 2 is characterized in that, the end of described concave curved surface is most advanced and sophisticated.

4, light fixture as claimed in claim 2 is characterized in that, the end of described concave curved surface is a flush end.

5, light fixture as claimed in claim 2 is characterized in that, the end of described concave curved surface is positioned at the below of the geometric center of described annular light source.

6, light fixture as claimed in claim 1 is characterized in that, the reflective surface of described reflector is a reflectivity more than or equal to 60% high reflectance face.

7, light fixture as claimed in claim 1 is characterized in that, the outermost of described annular light source to the minimum distance d of lampshade more than or equal to central shaft to 10% of the distance D of lampshade, i.e. d 〉=0.1D.