JPH0512107U - Lighting equipment translucent cover - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a structure that allows the operator to select the number of power lines to be released. The first groove 1 of the H-shaped structure is provided in the main body 7, and the first groove 1 and the second groove 1a of the H-shaped groove have the same groove length and width on both sides facing each other. In addition, the length b dimension of the central groove connecting the opposing grooves on both sides, including the groove width on both sides, is the same as the groove length on both sides, and even if the width a is similar, the length is the same. ing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a translucent cover in a lighting fixture.

[0002]

[Prior Art]

 In the conventional technology, coating from the outer surface, grain pattern on the mold, or injection of foaming gas into the molding material pellets.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technique, the coating is a secondary process, which is costly and has a drawback that only the outer surface can be formed. Also, in the case of mold wrinkles, unless the depth of the wrinkles to be attached to the male / female mold is made shallow, there are many problems such as biting into the mold at the time of molding, and each method also produces a silk-like pattern and texture. There was a drawback that I could not. Furthermore, as a method closer to the present invention, a foaming agent may be kneaded into the molding material pellets. In this case, however, the foaming agent is difficult to escape from the pellets, so that it easily remains in the molded product and the surface However, there was a drawback that it was hard to form a silk-like silver ribbon pattern because it was difficult to appear in.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention sprinkles a transparent material with a foaming agent and performs injection molding.

[0005]

[Action]

 The mixing ratio of the foaming agent to the pellet of the transparent molding material was 0. It is coated with 9 to 1.3% as much as possible, and this is injection molded so that when heated in the cylinder of the molding machine, the material temporarily becomes gas faster than it melts. The material is injected sooner and the material is slightly delayed, which causes a large amount of foaming gas to flow to the outside of the product, resulting in a large silver strip on the outside of the product. It becomes a silk-like pattern.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. First, as shown in FIG. 2, a suitable adhesive 5 is adhered to the material pellets 4, and a powder-like foaming agent 6 adsorbed on the outside thereof is charged into the hopper 7 of the molding machine. The charged material is heated. When heated by the plate 8, it is gradually softened by the screw 9 and becomes 6'as shown in FIG. 5. At this time, the foaming agent is heated faster than the pellet, and the softening temperature is higher than that of the pellet. Since the foaming agent is slightly gasified, and when the foaming agent is being gasified, when the gas is injected into the molds 10 and 11, the foaming gas 6'is better than the pellet 4'as shown in FIG. Pellets 4 ″ that entered the mold quickly and were completely softened while still attached to the mold wall were extruded later, and as shown in FIG. 6, the foaming gas passed through the walls of the molds 10 and 11 and the softened pellets flowed through the central part. As shown in Fig. 7, the foam gas trajectory 5 "is formed. It flows to the streak on the surface 3 of the goods, ing and silver line pattern of silk style. Incidentally, in the case of molding the material pellets 4 into which the foamed gas 4'is kneaded as shown in FIG. 3 by a conventional method close to this method, it flows in the mold as shown in FIG. Therefore, since the foaming gas 4'is difficult to escape to the wall surface of the mold, the surface state as shown in FIG. 9 is obtained and the desired silk-like silver ribbon pattern cannot be obtained.

[0007]

[Effect of the device]

 Since the present invention is configured as described above, a silk-like silver band pattern can be roughly formed on the inner and outer surfaces of the molded product, and the conspicuous shade can be added to the transmitted light due to the unevenness of the silver pattern.

[Brief description of drawings]

FIG. 1 is a front view of a light-transmitting cover which is completed by the present invention.

FIG. 2 is a cross-sectional view of a state in which a foaming agent is sprinkled on the outer surface of the material pellet for making FIG.

FIG. 3 is a plan view of a prior art pellet.

FIG. 4 is a cross-sectional view showing a material flow state when a molding machine and a mold are molded by the molding method of the present invention.

5 is a partially enlarged view of FIG.

6 is a partially enlarged view of FIG.

FIG. 7 is a plan view showing a surface state formed in FIG.

FIG. 8 is a plan view showing a flow state of a material when the material is molded with a conventional material pellet.

FIG. 9 is a plan view showing a surface state formed in FIG.

FIG. 10 is a cross-sectional view showing a conventional painting operation.

11 is a front view of the conventional technique completed by working in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Translucent cover 2 ... Silk-like silver ribbon pattern due to unevenness 3 ... Surface between 2 and 2 4 ... Material pellet 4 '... Slightly softened pellet 4 "... Completely softened pellet flow 5 ... Adhesive 6 ...
Foaming agent

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display area B29K 105: 04 105: 20 B29L 31:34 4F

Claims (1)

[Scope of utility model registration request] 1. A powder-like foaming agent is added to the outer periphery of pellets of a thermoplastic material such as transparent styrene resin in a range of 0.9-1.
3% was sprinkled and molded to roughen the silk-like silver ribbon pattern on the inner and outer surfaces of the translucent cover, and the conspicuous yin and yang was imparted to the transmitted light due to the irregularities of the silver ribbon pattern. Lighting equipment translucent cover characterized by.