CN2729530Y

CN2729530Y - Shading plate

Info

Publication number: CN2729530Y
Application number: CN 200420117731
Authority: CN
Inventors: 林生
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-21
Filing date: 2004-10-21
Publication date: 2005-09-28
Anticipated expiration: 2014-10-21

Abstract

The utility model discloses a shading plate, comprising a plate body. The plate body is provided with a light hole and the edge of the plate body is provided with an opening. The distance D between the inner edges of the opening is smaller than the diameter d of the light source shaded by the dark slide. The density of the light hole arranged on the plate body or the diameter of the light hole enlarges gradually outward along the axle wire of the plate body, and the opening enlarges gradually from the inner to the outer. The boundary of the outer edge or the inner edge is preferentially designed as the shape of alternate tooth and the plate body is designed as a non-transparent plate body which is provided with a reflecting surface. The middle of the plate body is provided with a reinforcing rib, and the reinforcing rib is a protrusion or a recessed part and is provided with a light hole. The plate body is a curved surface which is symmetrical with the axle wire. The plate body is preferentially assembled by the indent curved surface or the outer salience curved surface. The utility model can make the light source pass through the dark slide and illuminate on the display panel and has better light even degree, and the utilization ratio of the light reaches 70 percent to 90 percent and the energy-saving effect is very obvious. The shading plate has better effect when applied in the advertisement of lamp box and the other field of illumination combining with the reflecting plate.

Description

Shadow shield

[technical field]

The utility model relates to a kind of shadow shield, relates in particular to the shadow shield that a kind of luminaire is used.

[background technology]

Present lighting engineering mainly is to consider how to improve the utilization rate of light source, how to make lower-powered light source reach the effect of better illumination as far as possible, but on the more shading technology that the is lost in imperfection of luminous energy, this does not cause the attention that people are enough.For example, existing lamp box advertisement has used several fluorescent lamps just can reach the illuminating effect of expection, though like this light all spend neither be fine.Add common shadow shield (being generally transparent or semitransparent) on fluorescent lamp, the hacures that occur because of shadow shield then can occur, and light loss is also bigger, this is an insoluble always technical barrier in the industry.

At the prior art above shortcomings, the utility model is proposed.

[summary of the invention]

The technical problems to be solved in the utility model is that existing shadow shield light source utilization rate is lower, and the hacures problem that is difficult to avoid that occurs in the occlusion process provides that a kind of light utilization efficiency is higher, the even unblanketed shadow shield of illumination.

For achieving the above object, the basic design of technical scheme provided by the utility model is as follows:

A kind of shadow shield comprises plate body, has loophole on the plate body, and there is opening at the plate body edge.

Distance D between the described opening inner edge is less than its shading source diameter d.

The density of the loophole on above-mentioned plate body outwards increases gradually from the plate body axis, perhaps the diameter of loophole outwards increases gradually from the plate body axis, and such design makes the light transmittance of light transmission part of shadow shield of the present utility model increase gradually to both sides from the shadow shield longitudinal axis.

Wherein said opening increases from inside to outside gradually, further improves the optical illumination uniformity.

For better improving the optical illumination uniformity, preferably outer rim border or the inner edge border with described opening is designed to staggered dentation.

Utilize the angle of optical efficiency to consider from raising, preferably plate body is designed to have the opaque plate body of reflective surface.

In the middle of the described plate body reinforcement is arranged, described reinforcement is a projection or recess, has loophole on it.

Described plate body is the curved surface shape of symmetrical axis.Preferably, described plate body forms for being connected by inner sunken face or outer convex surface.

Plate body of the present utility model can be designed to become with level respectively the inclined-plane of α=5 °-60 ° of angles from plate body longitudinal axis both sides.

The beneficial effects of the utility model are:

Specify the shading principle of the utility model shadow shield below in conjunction with accompanying

drawing

9,10,11,12.

Fig. 9 is the utility model shadow shield light path principle figure, as shown in Figure 9, a light part of launching by light source 4 by loophole 2 and opening 6 direct irradiations at (shown in light among the figure 9,10) on the display board 8, make display board 8 identical with the illuminance at display board 8 other positions like this, improved the uniformity of optical illumination over against the illuminance of the part of light source 4.A part of in addition light then is reflected in (shown in light among the figure 11) on the reflector 12 by the reflecting part of shadow shield, then through baffle reflection on display board 8, made full use of luminous energy, reach the purpose of energy-saving illumination.

Figure 10 is another optimal way, be characterized on opening inner edge distance D, having made a large amount of work at shadow shield, find when the distance D of opening inner edge during less than the diameter of light source, can solve the problem (this is that this area has problem to be solved and that be difficult to overcome fully all the time) of shade effectively, make illumination more even.As shown in figure 11, when shadow shield opening inner edge distance D 1 〉=d1, the light M, the N that launch from light source 4 are incident upon on the display board 8 through opening inner edge 6 and loophole 2, have then formed a zone that does not have light to intersect, and promptly the shadow region 13.

And shown in the light path principle figure of Figure 10 the utility model shadow shield, when the diameter d 2 of light source 4 during greater than the distance D 2 between the opening inner edge 6 of shadow shield 1, the

light

9,10 at the two ends of light source 4 is by opening inner edge 6 and loophole 2, its light not zone of intersection (being shadow region 13) drops between shadow shield 1 and the display board 8, thereby avoided the formation in shadow region 13 well, make that the illuminance of entire display panel 8 is more even, better illuminating effect is arranged.

In addition, light utilization efficiency of the present utility model is higher, and energy-saving effect is obvious, and light utilization efficiency reaches between the 70-90%, below by specifying in conjunction with the accompanying drawings.

Figure 12 is the practical application effect light path principle figure of two-sided illumination, two sides at light source 4 all is provided with shadow shield of the present utility model, its direct projection light and reflection ray all are radiated on the display board 8 effectively, improved the uniformity of optical illumination, improve light utilization efficiency when having reached a better illumination effect again preferably, lowered light loss.

By above principle analysis as can be known, the utility model has the better illumination effect, and energy-saving effect is obvious, and the utility model is applied in the lamp box advertisement in conjunction with reflector and neutralizes and have good especially effect in other lighting fields.

[description of drawings]

Fig. 1 is the front view of the utility model embodiment 1;

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

Fig. 3 is the front view of the utility model embodiment 2;

Fig. 4 is the sectional view of Fig. 3;

Fig. 5 is the front view of the utility model embodiment 3;

Fig. 6 is the sectional view of Fig. 5;

Fig. 7 is the front view of the utility model embodiment 4;

Fig. 8 is the sectional view of Fig. 7;

Fig. 9 is a shadow shield light path principle figure of the present utility model;

Figure 10 is the light path principle figure of another embodiment shadow shield of the utility model;

Shade formed light path principle figure when Figure 11 was practical application;

Figure 12 is a shadow shield practical application effect light path principle figure of the present utility model.

[specific embodiment]

Below in conjunction with accompanying drawing the utility model specific embodiment is described in detail:

Embodiment 1:

As shown in Figure 1 and Figure 2, the utility model shadow shield comprises that one has the opaque plate body 1 of reflective surface, have loophole 2 on the plate body 1, there is opening 3 at plate body 1 edge, and remainder is a reflective surface, and the distance D between the inner edge 6 of opening 3 is less than the diameter d in its shading source 4, the outer rim 5 of opening 3 is in alignment, 6 one-tenth uneven staggered dentations of inner edge, such structural design are in order can better to weaken shade, to reach better light and all spend effect.The density of the loophole 2 on the plate body 1 outwards increases gradually from the axis of plate body 1, such design makes the light transmittance of the utility model shadow shield increase gradually to both sides from the shadow shield axis, form the mild transition of luminous intensity, guarantee that further light all spends, guarantee the illumination effect of uniform.In the middle of the plate body 1 protruding reinforcing rib 7 is arranged, reinforcement 7 is a pointed shape, has loophole on it, has both increased the intensity of the utility model shadow shield, can use under long light source occasion, and its surperficial loophole has also guaranteed translucent effect.

Embodiment 2:

As shown in Figure 3 and Figure 4, on the basis of embodiment 1, the outer rim 5 of present embodiment opening 3 is uneven staggered dentation, its inner rim 6 is in alignment, the diameter of the loophole 2 on the plate body 1 outwards increases gradually from the axis of plate body 1, and the shaped design of the plate body 1 of present embodiment becomes symmetrical axis arc-shaped curved surface shape in addition.Because the particular design of the shading plate body of present embodiment, make the light launched from light source 4 reflex to direction (shown in L1, L2 among Fig. 4) away from light source through the reflector segment of shadow shield, the light that can reflect does not return the phenomenon of light source itself, has reduced light loss to greatest extent.Therefore the light utilization efficiency of present embodiment is very high.

Embodiment 3:

As shown in Figure 5 and Figure 6, on the basis of embodiment 1, the outer rim 5 of present embodiment opening 3 and inner edge 6 are uneven staggered dentation, and the density of the loophole 2 on the plate body 1 and diameter all outwards increase gradually from the axis of plate body 1.The opening 3 of present embodiment is designed to become with level the angle between α=5 °-60 ° in addition, in the middle of the plate body 1 protruding reinforcing rib 7 is arranged, and reinforcement 7 is an arc, has loophole on it, and present embodiment has preferably adopted 15 ° of angles.

Embodiment 4:

As shown in Figure 7 and Figure 8, on the basis of embodiment 1, the outer rim 5 of present embodiment opening 3 and inner edge 6 are uneven staggered dentation, plate body 1 in the present embodiment be designed to from symmetrical axis by inner sunken face A1, A2, A3 and outside the curved surface that is combined to form of convex surface A4, the inner sunken face of combination and the number of outer convex surface can be not limited to the qualification of the utility model embodiment and accompanying drawing in conjunction with reflecting plate or actual conditions specific design, combination.

This seems simple decision design to shadow shield of the present utility model less than the light source diameter by opening inner edge distance D, has improved shadow shield light source utilization rate, has avoided the hacures problem that occurs in the occlusion process, makes illumination more even.

In the above-described embodiments, described light source is a line source, can be T5, T6 fluorescent lamp or CCFL or other.

Its split shed 3 increases from inside to outside gradually, can be designed to U-shaped or V-arrangement, and such design has better translucent effect.

Those skilled in the art can carry out other change and modification after reading the utility model patent specification, but these changes and modification are all within the claim protection domain that the utility model awaits the reply.

Claims

1, a kind of shadow shield comprises plate body, it is characterized in that: have loophole on the plate body, there is opening at the plate body edge.

2, shadow shield according to claim 1 is characterized in that: the distance (D) between the described opening inner edge is less than its shading source diameter (d).

3, shadow shield according to claim 2 is characterized in that: the density of the loophole on the described plate body or the diameter of loophole outwards increase gradually from the plate body axis.

4, shadow shield according to claim 2 is characterized in that: described opening increases from inside to outside gradually.

5, shadow shield according to claim 2 is characterized in that: the outer rim border of described opening or inner edge border are staggered dentation.

6, shadow shield according to claim 2 is characterized in that: described plate body is the opaque plate body with reflective surface.

7, shadow shield according to claim 2 is characterized in that: reinforcement is arranged in the middle of the described plate body.

8, shadow shield according to claim 7 is characterized in that: described reinforcement is a projection or recess, has loophole on it.

9, according to the described shadow shield of arbitrary claim among the claim 1-8, it is characterized in that: described plate body is the curved surface shape of symmetrical axis.

10, shadow shield according to claim 9 is characterized in that: described plate body forms for being connected by inner sunken face or outer convex surface.