JPH0282402A - lampshade - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a lampshade for a hanging tubular fluorescent lamp luminaire made of a hollow plastic structural plate.

[Conventional technology]

Traditional ceiling hanging tubular fluorescent light fixture lampshades are
It is generally produced by molding using polystyrene, acrylic, etc. as a material, and the method of manufacturing by cutting and bending a flat plate is the Utility Model Publication No. 57-25 [No. 15,
Utility Model No. 60-62705, Utility Model No. 60-168206
For example, the number etc. In addition, as for the processed laminated structure board, Utility Model Application No. 56-70905 and Utility Model Application No. 61-2621
There is No. 4.

[Problem to be solved by the invention]

Among the above two types of molding, those made by molding have many advantages, such as being able to form any shape, being small in size, and being able to be colored in any color.However, on the other hand, molded products Because of this, molds are required and costs are high, and the material itself is weak against impact and easily cracks and chips when subjected to impact. In addition, in the case of the conventional lampshade made by bending a flat plate, in the case of Utility Model Application Publication No. 57-2505, it was impossible to construct the entire lampshade from a single flat plate. In other cases, the product cannot support the pressure load by itself during storage, and therefore requires strict packaging to protect it from the pressure load.

In addition, all conventional lampshades using laminated structural boards are designed to produce the effect of light rays passing through the corrugated center core, and the corrugated center core deforms due to the pressure load during storage. Strict packaging was necessary to avoid this.

The object of the present invention is to eliminate the drawbacks of the prior art described above, to be able to easily manufacture the structure by cutting and bending without using a mold, and to improve the compressive strength and durability of the hollow plastic structure plate itself as a material. Using compression characteristics,
A lampshade that can withstand shocks such as drops during handling and pressure loads during storage with simple packaging, and also has sufficient light transmittance by utilizing the translucency of the material itself. is to provide.

[Means to solve the problem]

The above purpose is to form a hollow plastic structural board into a roughly cross-shaped top plate with a roughly square top plate in the center and four rectangular side plates that are bendably connected along the four peripheries of the top plate. This is accomplished by cutting out a member, folding it along the ruled lines, and joining the abutting parts of the side edges of the side plates to obtain a bottomless square box, which is then used as a lampshade.

[Effect]

A lampshade made of a hollow plastic structural plate can be easily manufactured from a flat hollow plastic structural plate by punching and bending. Therefore, it is possible to form the required shape without using a mold. In addition, since the material itself of this lampshade has cushioning properties, there is a very small possibility of damage such as cracking or chipping due to external impact during transportation. It has sufficient support capacity even for cumulative pressure loads.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described with reference to FIG. 1 and subsequent figures.

FIG. 1 shows the structure of a lampshade according to one embodiment of the present invention. First, from a hollow plastic laminate, a substantially cross-shaped member consisting of a substantially square top panel 1 and side panels 2 bendably connected by ruled lines 5 on each side of the top panel 1 as shown in FIG. 2 is cut and fitted. The side plates 4 are bent in the same direction according to the ruled lines 6, and the vertical twilled portions where the side plates 2 butt are joined to form the joint portion 4, so that the entire body has the shape of a bottomless box. Furthermore, a main body insertion hole 5 is provided approximately at the center of the top plate portion 1.

The side panels can be joined together using adhesives, which do not use separate materials, and ultrasonic welding.
An example of this method is shown in FIG. 6, which is a framework method (see FIG. 4) in which fitting notches 6 are provided and assembled using the elasticity of the material.
As shown in FIG. 5, holes 7 for member fixing claws are provided at key points in the side plate 2 of the approximately cross-shaped member, and the hinge portion 9 as shown in FIG. 6 allows the member to be bent. Using the fixing member 8 with the fixing claw 10 on the surface that
The basic method is to assemble and form a lampshade as shown in the figure, but there is also a groove f1511 as shown in Figure 8.
It is also possible to join by inserting the lower end of the side plate 2 into the groove 11 using a grooved fixing member 12 having a groove, or by pasting a tape 12 which also serves as a decoration as shown in FIG.

According to this example, it is possible to easily create a lampshade without using a mold for molding, which is safe in the conventional method, and moreover, the hollow plastic structure that is the material has characteristics similar to corrugated poles. Therefore, by using the lampshade as an outer box, the lampshade itself can support the compressive load during storage, and the material itself can absorb the shock caused by handling, so it can be handled with only simple packaging. It is.

Note that the shape of the lampshade is not limited to cutting off the lower end of the side plate 2, as shown in FIG.
A lower flap 15 is provided on the edge opposite to the top plate part 1, and is connected so as to be foldable along a ruled line B, and is joined by a fixing member 14 with L legs shown in FIG. 11 to form a shape as shown in FIG. 12. Good too.

In addition, although the top plate part 1 and the side plate 2 are basically connected to each other, as shown in FIG.
It is also possible to reduce the amount of material used by combining and joining as shown in the figure.

〔Effect of the invention〕

According to the present invention, there is no need for a mold for molding, which was indispensable in the conventional method for making lampshades, and by utilizing the cushioning properties of the material, the product can withstand external forces such as drops with simple packaging. In addition, by utilizing the compression resistance of the material, it is possible to realize a packaging that can easily withstand the pressure load during storage at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a lampshade according to an embodiment of the present invention, FIG. 2 is a developed view thereof, FIG. A perspective view of the completed state, FIG. 5 is a developed view of the lampshade when a fixing member is used, FIG. 6 is a perspective view of the fixing member, FIG. 7 is a perspective view of the completed state, and FIG. 8 is a grooved fixing member. , FIG. 9 is a perspective view of an example of a completed product with tape joints, FIG. 10 is a developed view of an example with a lower flange, FIG. 11 is a perspective view of a fixing member with L legs, and FIG. 12 is a perspective view of the example. Fig. 13 is a perspective view of the completed state;
FIG. 4 is a perspective view showing the situation during assembly. 5... Body insertion hole, 6... Notch for fitting, 7... Hole for member fixing claw, 8... Fixing member, 9... Hinge portion, 10... Fixing claw.

Claims (1)

[Claims] 1. It consists of a flat plate made of a translucent hollow plastic structure board, an almost square top plate part, and a total of four rectangular side plates connected so that they can be bent by ruled lines on each of the four sides of the top plate part. A lampshade characterized in that a substantially cross-shaped member is cut out, four side plates are bent along ruled lines, and the abutted ridges on the sides of the side plates are joined to each other.