CN2401777Y

CN2401777Y - Photopermeable lampshade for spotlight

Info

Publication number: CN2401777Y
Application number: CN99243622U
Authority: CN
Inventors: 陈学智
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-24
Filing date: 1999-08-24
Publication date: 2000-10-18
Anticipated expiration: 2009-08-24

Abstract

The utility model relates to a transparent lampshade used for luminescence windows of floodlights. Compared with present transparent lampshades, the utility model a has better optical property, namely the transparent lampshade is divided into a plurality of areas, each of the areas is composed of prism groups with different angles and arrangement directions, the angle of a prism is used for controlling the refraction directions of lamp light, the arrangement direction of the prism is used for controlling illumination areas, and thereby, irradiation uniformity can be improved, or the illumination of some one appointed area can be improved, or the effective rate of irradiation can be improved.

Description

The transparent lamp shade that uses on the Projecting Lamp

The utility model relates to the transparent lamp shade that uses on the light fixture, particularly the transparent lamp shade that uses on the Projecting Lamp luminescence window.

Flood lighting of Shi Yonging or floodlight fixture in the market, its luminescence window all adopts plate glass as transparent lamp shade, for being that the light that light source sends is not done any correction with the light fixture, shine fully and require the field of illumination according to the distribution curve flux of transmitter decision and crevice projection angle, therefore its feature is that crevice projection angle is limited, and irradiation distance is far away, in irradiated zone, near the local brightness height of central point, dark away from the place of central point; And irradiation at short distance, the field of illumination is little, and we can clearly be seen that this point from its distribution curve flux, and particularly under relatively shorter irradiation distance condition, this point is just more obvious.Another problem is the uniformity, because there is crevice projection angle in transmitter, want in the zone of a regulation, to improve the uniformity, particularly use one group of lamp to realize that the satisfied illumination and the uniformity have only two ways, the one, the increasing irradiation distance, enlarge the irradiation area of every lamp, make the illumination between the light fixture complementary than being easier to, with the raising uniformity, but because the distance increasing, illumination can decay, so should use the bigger lamp of power ratio; Another way is under the condition that does not change projection distance, increases the quantity of lamp, even the irradiation area of every lamp is smaller like this, but because how quantity also can play compensation preferably, to improve the uniformity.That a kind of all meaning with high power of these two ways exchanges the uniformity for.In sum, adopt plate glass relatively to be fit to telecurie irradiation, for example vertical plane wall illumination, the illumination of building body as the Projecting Lamp of transparent lamp shade; And, for example be used for the ceiling area lighting in places such as factory building, shop to in-plant irradiation, it is unable to do what one wishes then to seem.

The purpose of this utility model is to provide the transparent lamp shade that uses on a kind of transparent lamp shade, particularly Projecting Lamp, makes it have bigger field of illumination, reaches the uniformity preferably.

The purpose of this utility model realizes by following measure: the surface rolling of transparent lamp shade is become rough shape, its cross section indention, each tooth promptly forms a prism, thereby the surface that makes transparent lamp shade becomes a prism group, as Fig. 1, shown in 2, the light that sends in the lamp body is strengthened on the A direction owing to the refraction of prism group, B and B ' direction are constant substantially, for the C direction, light has two trends, and a part is invested the D direction through the refraction of prism, another part since incidence angle more than or equal to critical angle, so light is reflected back toward in the lamp body, thereby be suppressed, therefore invest C direction light and be suppressed substantially.D direction illumination will be decayed accordingly owing to the refraction of prism.Therefore as can be seen, because the effect of prism makes light by these prisms the time, mainly invested A, B, B ', D direction.The transparent lamp shade of Projecting Lamp is divided into several zones, and each zone is made of all different prism group of angle, orientation respectively.The angle difference of prism can be controlled the angle of light refraction; The difference of prism arrangement direction can play the illumination that improves a certain direction, suppresses the effect of another direction illumination simultaneously, being adjusted at the distribution curve of irradiated area light, thereby improving the uniformity or makes light have more directionality.Because transparent lamp shade is glass or polyester material, therefore can be easy to rolling.

Advantage of the present utility model is, owing to can be repaired to the projecting direction of light, therefore can or improve its uniformity according to the applied environment of light fixture, be convenient to finish the combination of light fixture, or the direction of illumination of finishing light, improve some regional illumination according to designing requirement, suppress some regional illumination, improve the rate of going and offering one's services of light projector.

Fig. 1 is a structure principle chart of the present utility model

Fig. 2 is the cutaway view of Fig. 1 along the M-M direction

Fig. 3 is the structural representation of the utility model embodiment 1

Fig. 4 is the cutaway view of Fig. 3 along the N-N direction

Fig. 5 is the structural representation of the utility model embodiment 2

Fig. 6 is the cutaway view of Fig. 5 along the P-P direction

Fig. 7 is the cutaway view of Fig. 5 along the Q-Q direction

Fig. 8 is the side view of the utility model embodiment 3

Fig. 9 is the inner surface subregion schematic diagram of the utility model embodiment 3

Figure 10 is the outer surface subregion schematic diagram of the utility model embodiment 3

Figure 11 is the cutaway view in a, c among the embodiment 3, d zone

Figure 12 is the cutaway view in b zone among the embodiment 3

Below in conjunction with drawings and Examples the utility model is described in detail: embodiment 1:

With reference to the accompanying drawings 3, transparent lamp shade is divided into four zones with diagonal, the orientation of prism group is parallel with the limit of being faced separately in each zone, and prism group angle direction is symmetry each other, as shown in Figure 4, as can be seen, when light passes prism, because the effect at refraction angle, make the field of illumination to around enlarge, illumination strengthens, in vertical direction since have part light to around refraction, therefore be attenuated at this direction light intensity, make the illumination of whole field of illumination be tending towards even.Embodiment 2:

With reference to the accompanying drawings 5, transparent lamp shade is divided into three zones, each zone is the prism group, i.e. m and m ₁, m ₂, wherein prism group m and prism group m ₁, m ₂Arrangement mode is orthogonal, and prism group m ₁With prism group m ₂Be parallel to each other, but the angle direction of mirror rib is symmetrical, so as shown in Figure 6 light is at A ₁, A ₂Direction is strengthened, B ₁Direction intensity is constant, and B ₂Direction is suppressed, the decay of D direction.This lamp is fit to be installed in the intersection of ceiling and vertical plane wall, is fit to three directional lightings.Embodiment 3:

Present embodiment will provide a kind of transparent lamp shade, has comparatively complicated compound mode, so that better embody the special-effect of prism group, particularly make the light projector irradiation that better directionality is arranged, with reference to the accompanying drawings 8, be the side view of this lampshade, surface and outer surface all give subregion within it, as Fig. 9, shown in 10, with reference to the accompanying drawings 9, the inner surface of transparent lamp shade is divided into four zones, regional a be positioned at transparent lamp shade around, regional b is positioned at the center of lampshade, zone c, zone d lays respectively at the both sides of regional b, zone a is made of some row arcs, as shown in figure 11, purpose be levelling to around the light that penetrates of diffusion repair and enter in the lampshade, zone b is that some row prism arrangement form, as shown in figure 12, because regional b is near light source, so utilize the refraction of prism that light is repaired; Zone c and regional d are still by some row circular arcs and constitute, as shown in figure 11, its purpose is still finishing diffusion light, this shows that the subregion purpose of inner surface is that light is once adjusted in transparent lamp shade, is beneficial to outer surface to the control once more of light direction.With reference to the accompanying drawings 10, outer surface is divided into four zones, i.e. e, f, g ₁, g ₂The district, wherein regional e be positioned at lampshade around, corresponding with the regional a of inner surface, the partitioned mode of outer surface is substantially the same manner as Example 2, regional f, g ₁, g ₂Be some row prisms and constitute the prism group of regional f and regional g ₁, g ₂The prism group perpendicular, g ₁And g ₂Its orientation of prism group in zone is opposite, and its radiation modality is substantially the same manner as Example 2, and different is that owing to the finishing of inner surface to light, the effect of its irradiation will be enhanced.

Claims

1, a kind of transparent lamp shade that is used for using on the Projecting Lamp is characterized in that: the surface rolling of transparent lamp shade is become rough shape, and its cross section indention, each tooth promptly form a prism, prism group of the whole formation of lampshade.

2, transparent lamp shade according to claim 1, it is characterized in that: square transparent lamp shade is divided into four zones with diagonal, the arrangement of each interior prism group in zone is parallel with the limit of being faced separately, and prism group angle direction is with respect to the center line symmetry of square transparent lamp shade.

3, transparent lamp shade according to claim 2, it is characterized in that: transparent lamp shade is divided into three zones, and each zone is prism group m, m and m, and wherein prism group m is vertical with prism group m, m, prism group m and prism group m are parallel to each other, but the angle direction of prism is symmetrical.

4, transparent lamp shade according to claim 1, it is characterized in that: the inner surface and the outer surface of transparent lamp shade are all given subregion, wherein inner surface is divided into four zones, the zone a be positioned at transparent lamp shade around, constitute by some row arcs, regional b is positioned at the center of transparent lamp shade, it is a prism group, zone c and regional d are positioned at the both sides of regional b, are made of some row circular arcs; Outer surface is divided into four zones, zone e is made of some row arcs, be positioned at lampshade around, and it is corresponding with the regional a of inner surface, zone f, g, g constitute by some row prisms, and corresponding with regional b, c, the d of inner surface, the prism group of regional f is vertical mutually with the prism group of regional g, g, the prism group of zone g and regional g is parallel to each other, but its angle direction is symmetrical.