JPH03112002A - Shade for illuminating fixture - Google Patents

Abstract

PURPOSE:To simplify a structure by using the outer side forming a hollow shade as an outer hull and the inner side as a reflecting plate portion. CONSTITUTION:The outside face of a shade main body 1 with a hollow section 2 forms a shade outer hull 3, the inside face serves as a reflecting plate portion 4, the main body 1 has necessary two functions, thus its structure is simplified. A lightweight shade for an illuminating fixture with high economical efficiency and high strength is obtained.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a shade for a lighting fixture.

[Prior Art] Conventionally, a shade A shown in FIG. 7 has generally been provided as a shade A attached to a lighting device PC6 such as an arm-type stand. This shade is constructed by arranging an aluminum reflective plate 4 on the inner surface of a plastic shade main body 3 whose bottom surface is open.

[Problems to be Solved by the Invention] However, in the conventional example as described above, when configuring the shade A, an aluminum reflective plate 4 is attached to the plastic shade body 3 which is a separate member. In other words, the shade A is composed of two members, the plastic shade body 3 and the aluminum reflective plate 4, which requires time and effort to assemble and is expensive. There is. For this reason, it is possible to simplify the structure by eliminating the reflector 4 and subjecting the inner surface of the shade body 3 to a surface treatment such as aluminum vapor deposition to form the reflector part 4'';
The shape of the shade body 3 is determined by the design, and the reflection plate part 4', which requires consideration of the light distribution state, can be formed by depositing aluminum on the inner surface of the shade body 3, which is formed with emphasis on design. There was a problem in that it was unreasonable and it was not possible to obtain good light distribution. Therefore, as shown in FIG. 8, considering the light distribution state on the inner surface, r! ! It is also possible to form a shade body 3 having a reflecting plate portion 4' on the inner surface by forming a J-curved surface 17 and applying aluminum vapor deposition to the concave curved surface 17. Then, the wall thickness is different between the center part and the end part, and as a result, there is a problem that sink marks 18 occur in the molded product and the appearance becomes unsightly.Moreover, since the thickness is within the range, the material cost is high and it is necessary to reduce the weight. There was a problem that the shade was heavy.

The present invention is an attempt to solve the above problems, and its purpose is to simplify the structure, keep costs low, reduce weight, and reduce high cost. To provide a luminaire shade with strength.

[Means for Solving the Problems] In order to achieve the above object, the shade A of the lighting fixture according to the present invention has a hollow part 2 formed inside the shade body 1 so that the shade body 1 has an outer surface 1a and an inner surface 1b. The outer side 1a of the shade body 1 is made into a shade outer shell 3, and the inner side 1b of the shade body 1 is made into a reflecting plate portion 4.

[Function 1] A hollow part 2 is provided inside the shade body 1, and the outer side 1a of the shade body 1 is used as the shade outer shell 3, and the inner side 1b of the shade body 1 is used as the reflective plate part 4, thereby forming the shade A. The shade outer electric wires 3 and the reflector portion 4 are integrally formed, which simplifies the structure and reduces costs. In addition, there is a hollow ff inside the shade body 1.
Sade A formed by forming 1s2
The weight of the lamp can be reduced, and the temperature rise on the outer surface of the shade A caused by the lamp 5 can be suppressed to a low level due to the presence of the hollow part 2. Furthermore, since the shade shell 3 and the reflector portion 4 are integrated into a double structure, the strength is increased.

[Example 1 Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 1 is a partially cutaway side view showing a shade A of the present invention. This shade A is a lighting equipment 6 such as an arm type stand.
It is attached to the lighting fixture 6 so as to cover the outside of the lighting fixture 5 installed in the lighting fixture 6. That is, the connecting screw part 7 is formed in the upper part of the shade A, which is formed in the shape of a conical tube with an open bottom surface, and when the lamp 5 is positioned inside the shade A, the connecting screw part 7 is connected to the illumination body 6a. It can be attached to the lighting fixture 6 in a state where it covers the lamp 5 by connecting it to the connecting screw part 6b provided in the. This shade A mainly consists of a shade body 1 made of plastic. A hollow portion 2 is formed inside the shade body 1 so that the outer surface side 1a and the inner surface side 1b of the shade body 1 are integrally continuous. At this time, the hollow part 2 is the shade body 1
is formed inside the shade body 1 so that the wall thickness is approximately the same throughout, and the outer surface side 1a of the shade body 1
Also, this is to prevent sink marks from occurring on the inner surface side 1b. The outer surface side 1a of the shade body 1 formed in the hollow part 2 is used as a shade outer shell 3, and the inner surface side 1b of the shade body 1 is used as a reflector part 4. At this time, the inner surface 1b of the shade body 1 has an optically designed concave curved shape, and by applying a surface treatment such as aluminum vapor deposition to this concave curved surface 1b', the illumination from the lamp 5 is reflected downward. A reflector portion 4 is formed. Further, the outer surface side 1a of the shade main body 1, which is the shade outer shell 3, has a design-like shape.

In this way, the hollow part 2 is provided inside the shade body 1, and the outer side 1a of the shade body 1 is used as the shade outer shell 3, and the inner side 1b of the shade body 1 is used as the reflective plate part 4. When forming A, there is no need to attach a separately formed reflector to the inner surface of the shade shell 3, and the retrofitting of the reflector can be omitted, simplifying the structure and reducing costs. It is possible to do so. In addition, a highly designed outer shell shape can be freely obtained without being influenced by the shape of the reflector, and since the hollow part 2 is formed inside the shade body 1, it can be used to cover the lamp 5. When attached to the lighting fixture 6, the outer surface of the shade A (the shade outer shell 3) is
It is possible to suppress the rise in surface temperature of
Further, although the shade A has a double structure with the hollow part 2 interposed in between the shade outer shell 3 and the reflection plate part 4, the strength can be increased. Furthermore, the presence of the hollow portion 2 makes it possible to reduce the weight of the shade A formed.

Figure @2 shows another embodiment of the present invention, in which the external shape of the shade A attached to the lighting fixture 6 suspended from the ceiling 8 is used as the prototype. It is. The hollow portions 2 are provided at a plurality of locations at regular intervals over the circumferential direction of the shade body 1, as shown in Figure t53. In these cases, as shown in FIG.
0, and the shade body 1 is also attached to the lighting body body 6a by a screwdriver 10.

Next, the formation of the shade body 1 with the hollow portion 2 provided therein will be described in detail. In each of the above embodiments, the shade body 1 is molded by a molding method as disclosed in Japanese Patent Publication No. 57-14968, and is molded in a molding apparatus B as shown in FIG. This device is constructed by installing a controller 12 and a soot unit 13 close to the device body 11, and a high-pressure gas supply pipe 13a led out from the soot unit 13 is connected to a nozzle installed in the device body 11. It is connected to 14. Then, the device body 1
1, the molten resin a is injected into the mold cavity 15 as shown in FIG. 6(a), and then into the mold cavity 15 through the nozzle 14 as shown in FIG. 6(b). A high-pressure gas is injected into the injected molten resin a to form a hollow part 2, and the molten resin a in the mold cavity 15 is
expand. After cooling and solidifying the molten resin a in the mold cavity 15 as shown in FIG. 6(c), the high-pressure gas is recovered or discharged, and the process is performed as shown in FIG. 6(cl). The molded product is taken out from the mold cavity 15 to form a shade body 1 having a hollow portion 2 therein.

[Effects of the Invention] As described above, the shade of the lighting device of the present invention has a hollow part formed inside the shade body so that the outer side and the inner side of the shade body are integrally continuous, and the outer side of the shade body is connected to the shade outer shell. In addition, since the inner surface of the shade body is a reflective plate part, in other words, the shade body and the reflective plate part that make up the shade are integrally formed, and unlike conventional cases, there is a separate reflector plate on the shade body. There is no need to provide a
By forming a hollow part in the shade main body, it is possible to reduce the weight of the formed shade, and the presence of the hollow part can also suppress the rise in temperature of the outer surface of the shade caused by the lamp. Furthermore, the shade body and the reflector part are integrated into a double structure, which increases the strength.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of one embodiment of the present invention, and FIG.
The figure is a cross-sectional view of another embodiment, FIG. 3 is a bottom view of the same with a part omitted, FIG.
The figure is a schematic explanatory diagram of the molding device, Fig. 6 (a) (b) (c)
(d) is an explanatory view for explaining the molding state, FIG. 7 is a partially broken side view of a conventional example, and FIG. 8 is a partially broken side view of another conventional example, where A is a shade; is the shade body, 1
a is the outer surface side, 1b is the inner surface side, 2 is the hollow part, 3 is the shade outer shell, and 4 is the reflective plate part.

Claims (1)

[Claims] [1] A hollow part is formed inside the shade body so that the outer side and the inner side of the shade body are integrally continuous, and the outer side of the shade body is used as the shade outer shell, and the inner side of the shade body is used as the reflective plate part. A shade of lighting equipment characterized by: