JP3081980U - Cover tube for fluorescent tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical fluorescent light that can use the insect repellent effect of the prior art as it is, can also prevent the occurrence of contamination due to dust and the like, and can suppress an increase in equipment costs and maintenance management costs. Provide a tube cover tube. SOLUTION: The fluorescent tube cover tube of the present invention is a laminated sheet formed by polymerizing and bonding two transparent polyester resin film substrates having a thickness of 25 μm or more via an adhesive layer containing an ultraviolet absorber. Both sides are joined to form a cylinder, and at least one of the film bases is provided with an antistatic property, so that not only the insect repellent effect is high but also the stain on the fluorescent tube cover itself. Thus, the life of the fluorescent tube can be maintained long without lowering the lighting efficiency.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent tube cover tube, and more particularly, to a tubular cover tube that is attached to a fluorescent tube to protect the fluorescent tube from contamination by insects and dust.

[0002]

[Prior art]

 Conventionally, lighting devices using fluorescent tubes have been used in factories and the like, but such lighting devices are often provided at high positions such as ceilings, and it is desired that maintenance and management be easy. On the other hand, fluorescent tubes emit ultraviolet light, so in the summer, for example, insects are attracted by the ultraviolet light and gather near the lighting equipment, contaminating the lighting equipment, equipment and raw materials near it, and improving product quality. And other problems.

In order to cope with such a problem, it has been proposed to apply a heat-shrinkable film containing an ultraviolet absorbent to a fluorescent tube and use it for illumination. However, although this method has a good insect repellent effect, it has the drawback of high equipment and maintenance costs.

[0004]

[Problems to be solved by the invention]

 Therefore, the present invention makes use of the insect repellent effect of the prior art using an ultraviolet absorber as it is, and can also prevent the occurrence of contamination due to dust and the like, thereby suppressing an increase in equipment costs and maintenance management costs. It is intended to provide a fluorescent tube cover tube.

[0005]

[Means for Solving the Problems]

 The purpose of the present invention is to join both side edges of a laminated sheet obtained by polymerizing and bonding two transparent polyester resin film substrates having a thickness of 25 μm or more via an adhesive layer containing an ultraviolet absorbent. This can be achieved by a fluorescent tube cover tube characterized by being formed into a cylindrical shape.

Further, in the fluorescent tube cover tube of the present invention, if at least one of the film substrates has an antistatic property, the fluorescent tube cover itself is also prevented from being stained, and the lighting efficiency is reduced. There is an advantage that the life of the fluorescent tube can be kept long without any problem.

[0007]

[Embodiment of the invention]

 As shown in FIG. 1, the fluorescent tube cover tube of the present invention forms a laminated sheet A by bonding a film substrate 1 and a film substrate 1 ′ with an adhesive layer 2, and further forms the laminated sheet A. After cutting to a predetermined width, as shown in FIG. 2, both side edges of the laminated sheet A are joined by using, for example, an adhesive B or the like to produce a tubular fluorescent tube cover tube C. Can be.

[0008] The film substrate 1 used for manufacturing the fluorescent tube cover tube of the present invention is required to have heat resistance and transparency in view of the usage of being attached to the fluorescent tube. In view of ease of handling, appropriate rigidity is required. From such a viewpoint, it is necessary that the thickness of the film substrate 1 be 25 μm or more on the assumption that a polyester resin is selected as a material suitable for the film substrate 1 and that the two are used as a laminated sheet. is there. However, if the thickness is too large, it becomes difficult to handle, so that a thickness larger than about 25 to 40 μm is not preferable.

The above-mentioned film substrate 1 is prepared by forming a film by mixing an ionic or non-ionic antistatic agent as necessary, or by applying a paint containing an antistatic agent to the surface. , It is preferable to use. The antistatic surface of the film substrate 1 may be exposed on the front surface side of the fluorescent tube cover tube, or may be hidden toward the joining surface to form the fluorescent tube cover tube.

In manufacturing the fluorescent tube cover tube of the present invention, the film substrate 1 ′ used in combination with the film substrate 1 also has the required performance as described above. Is the same as Therefore, the same polyester resin can be used as the film substrate 1 and the film substrate 1 '.

The adhesive layer 2 for bonding the film substrate 1 and the film substrate 1 ′ is formed by a method such as applying an adhesive containing an ultraviolet absorber onto the film substrate 1. However, the adhesive used here is preferably a solution-type adhesive compatible with the polyester resin, and particularly, a heat-melting adhesive such as an acrylic adhesive can be preferably used. The thickness of the adhesive layer 2 formed of such an adhesive is not particularly limited, but is preferably about 10 to 40 μm.

As the ultraviolet absorber to be mixed in the adhesive, for example, a benzotriazole-based, benzophenone-based, salicylic acid-based, or cyanoacrylate-based one can be appropriately selected and used. It is desirable that the amount of the ultraviolet absorber be appropriately selected in consideration of the thickness of the adhesive layer 2, the expected intensity of ultraviolet light, and the usage time of the fluorescent tube cover tube. The weight is preferably about 1 to 10 g per 1 m ^{2 of the} laminated sheet A.

The laminated sheet A used for manufacturing the fluorescent tube cover tube of the present invention is obtained by applying the above-mentioned adhesive layer 2 on the above-mentioned film substrate 1 and then applying the above-mentioned film substrate 1 ′ thereon. They can be produced by polymerizing them and bonding them together, for example, by heating using a hot roll or the like. If the film base material 1 and the film base material 1 'used as the material at this time are, for example, a roll-shaped long one, the laminated sheet A to be produced naturally becomes a long one. The width of the sheet A can be trimmed to a predetermined value corresponding to the standard size of the fluorescent tube cover tube as the final product.

Next, the above-mentioned laminated sheet A is placed on, for example, a horizontal molding table, and an adhesive B is applied to one surface of the left and right side edges in an elongated manner in the longitudinal direction of the laminated sheet A. Then, the other of the left and right side edges is turned inward, and the back surface is turned upward. Then, one of the side edges is turned inward, and the surface coated with the adhesive B is applied. When the left and right side edges are joined by, for example, applying heat by using a hot roll or the like, the laminated sheet A becomes a tubular cover tube C.

Further, the cover tube C thus formed is cut to have a predetermined length to obtain a fluorescent tube cover tube. The length of the fluorescent tube cover tube of the present invention and the diameter of the circular cross section thereof are determined. It was appropriate that the diameters were 1195 mm and 55 mm for a 40 W fluorescent tube and 2355 mm and 68 mm for a 110 W fluorescent tube, respectively.

[0016]

[Effect of the invention]

 The fluorescent tube cover tube of the present invention is formed into a tubular shape using a laminated sheet in which a polyester resin film base material is bonded with an adhesive containing an ultraviolet absorber, and a fluorescent tube cover having an insect repellent function is provided. Since it can be manufactured in a timely manner according to the shape and dimensions of the fluorescent tube to be attached, and it is easy to add an antistatic function, a fluorescent tube cover that has both insect-proof and anti-fouling properties Can be provided economically even in a variety of small production environments.

[Brief description of the drawings]

FIG. 1 is a sectional view of a laminated sheet used for a fluorescent tube cover tube of the present invention.

FIG. 2 is an external view of the fluorescent tube cover tube of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 film base 1 ′ film base 2 adhesive layer A laminated sheet B adhesive C fluorescent tube cover tube

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI // F21W 131: 40 F21W 131: 40 F21Y 103: 00 F21Y 103: 00

Claims (2)

[Utility model registration claims] 1. A laminated sheet obtained by polymerizing and bonding two transparent polyester resin film base materials having a thickness of 25 μm or more via an adhesive layer containing an ultraviolet absorber in the longitudinal direction of the laminated sheet. Characterized in that the two side edges of the laminated sheet are joined and formed into a cylindrical shape by an adhesive provided along,
Cover tube for fluorescent tube. 2. The fluorescent tube cover tube according to claim 1, wherein at least one of the film substrates has antistatic performance.