JP3068322U - Fluorescent sheet - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a fluorescent sheet which is excellent in waterproofness and has few troubles such as short circuit. SOLUTION: A fluorescent part 10 and a pair of plastic layers 20 located on the front and rear sides so as to sandwich the fluorescent part 10 are provided.
21 and an electric wire cover 30 having therein a metal wire 31 for conduction with the fluorescent portion 10, and a pair of plastic layers 2.
0, 21 and the electric wire cover 30 are integrated into a fluorescent sheet.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fluorescent sheet having a light emitting function, and more particularly, to a fluorescent sheet having excellent prevention properties.

[0002]

[Prior art]

 Today, fluorescent sheets are indispensable in our daily life. The fluorescent sheet has a light-emitting function and can be manufactured in various arbitrary forms. For this reason, the use of fluorescent sheets makes it easy to achieve special shapes and visual aesthetics.

[0005] The structure of the conventional fluorescent sheet shown in FIGS. 5 and 6 is such that the upper and lower layers are formed between the front and back plastic layers 61 and 62 around the fluorescent section 60 by using hot-melt plastic. The insulating cover 70 is fused, a set of copper foils 71 is placed at intervals in the insulating cover 70, and extends from one end of the set of copper foils 71 into the fluorescent section 60. Thereby, mutual conduction is possible between the fluorescent portion 60 and the copper foil 71. The opposite end of the pair of copper foils 71 is connected to the terminal 72. The terminal 72 circumscribes the electric wire and is connected to the power supply. With this structure, when the power is supplied, the fluorescent section 60 emits light.

[0004]

[Problems to be solved by the invention]

 However, the conventional fluorescent sheet has the following disadvantages. Although the two plastic layers 61, 62 and the insulating cover 70 are manufactured by hot-melt plastic, they are pressed against each other, but the adhesion at the time of pressing is not robust. Therefore, a gap is generated between the two plastic layers 61 and 62 and the insulating cover 70. When this gap is large and the fluorescent sheet is installed outdoors, the humidity in the air is very easily condensed to form water droplets, or water from rainfall enters through the gap. As a result, the fluorescent sheet is seen as a failure such as a short circuit.

[0005] In order to improve the above disadvantages, an object of the present invention is to provide a fluorescent sheet excellent in waterproofness.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a fluorescent sheet according to the present invention includes a fluorescent part, a pair of plastic layers located on the front and back sides so as to sandwich the fluorescent part, and an electric wire having therein a metal wire for conducting the fluorescent part. A cover is provided so that a pair of plastic layers and the wire cover are integrally connected. For this reason, there is no gap between a pair of plastic layers and the wire cover, and the phosphor sheet is excellent in waterproofness. Therefore, a failure such as a short circuit is unlikely to occur.

According to a second aspect of the present invention, in the fluorescent sheet according to the first aspect, a pair of the plastic layer and the electric wire cover are made of the same material. For this reason, the heat fusion between the two is easier and stronger, and gaps are less likely to be generated. Therefore, failure is less likely to occur.

[0008]

[Embodiment of the invention]

 As shown in FIGS. 1, 2 and 3, the embodiment of the fluorescent sheet according to the present invention mainly includes plastic layers 20 and 21 covering the front and back surfaces of the fluorescent section 10, and a set of plastic layers. At the joint surface with the electric wire cover 30, the upper jig 40 and the lower jig 50 are pressed together by high frequency technology. The upper jig 40 and the lower jig 50 used for the compression have a double arc shape as shown in FIG.

At the time of the high-frequency compression operation shown in FIG. 3, thermal fusion occurs between the plastic wire cover 30 and the plastic layers 20 and 21 by high frequency. As a result, as shown in FIG. 4, the plastic electric wire cover 30 and the plastic layers 20, 21 are integrally connected. A metal wire 31 is provided inside each wire cover 30. The ends of the pair of metal wires 31 are in contact with the fluorescent section 10. Further, a single plastic layer 22 (see FIG. 1) is pressed on the fluorescent section 10. The opposite side of the electric wire cover 30 is capable of conducting with the terminal 32 mutually.

Since the plastic layers 20, 21 and the plastic electric wire cover 30 are made of the same material, heat fusion h occurs during the compression by the high-frequency technology, so that they are integrated. As a result, there is no gap between the plastic layers 20 and 21 of each layer and the plastic electric wire cover 30 in which moisture enters. In this way, the occurrence of failures such as short-circuiting of the circuit due to the ingress of moisture from the outside into the fluorescent portion 10 is reduced.

[0011]

[Effect of the invention]

 According to the present invention, a fluorescent sheet excellent in waterproofness can be provided.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of an embodiment of a fluorescent sheet according to the present invention.

FIG. 2 is a local plan view of the back surface of the fluorescent sheet of FIG. 1;

FIG. 3 is a local cross-sectional view showing a state immediately before high-frequency compression is performed by an upper jig and a lower jig between a plastic layer of the fluorescent sheet of FIG. 1 and an electric wire cover.

4 is a local cross-sectional view showing a state after high-frequency compression has been performed between a plastic layer of the fluorescent sheet of FIG. 1 and an electric wire cover by an upper jig and a lower jig.

FIG. 5 is a plan view of a conventional fluorescent sheet.

6 is a local cross-sectional view showing a state after high-frequency compression is performed between a plastic layer and a wire cover of the fluorescent sheet of FIG. 5 by an upper jig and a lower jig.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Fluorescent part 20 Plastic layer 21 Plastic layer 22 Plastic layer 30 Electric wire cover 31 Metal wire 32 Terminal 40 Jig 50 Lower jig 60 Cold light piece 61 Plastic layer 62 Plastic layer 70 Insulation cover 71 Copper foil 72 Terminal

Claims (2)

[Utility model registration claims] 1. A method according to claim 1, further comprising: a fluorescent section; a pair of plastic layers positioned on the front and back sides of the fluorescent section so as to sandwich the fluorescent section; A fluorescent sheet, wherein the plastic layer of the above and the electric wire cover are integrally joined. 2. The fluorescent sheet according to claim 1, wherein said pair of plastic layers and said electric wire cover are made of the same material.