JP4588133B2 - Fluorescent tube cover sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cover sheet for a fluorescent lamp tube.
[0002]
[Prior art]
Fluorescent lamps are used in very large quantities for reasons such as low electricity bills for the amount of light and high temperatures.
However, this fluorescent lamp also has drawbacks. This is because a relatively large amount of ultraviolet rays are emitted. That is, the dye is faded by ultraviolet rays. That is, printed matter, clothes, food, advertisement postings and others.
Further, the wavelength of electromagnetic waves that can be identified by flying insects (such as chili mosquitoes, moths, etc.) is mostly in the ultraviolet region shorter than the human visible light region. Therefore, when a fluorescent lamp is turned on in a factory or store with a lot of insects, not only the flying insects that have phototactic properties gather in the light, but also the carnivores that prey on those insects. For example, cocoon.
[0003]
When insects gather in this way, not only food factories and grocery stores but also ordinary stores are very annoying.
In particular, when spiders come, it creates a nest and gives a very bad impression.
[0004]
If the ultraviolet rays that can be identified by insects are cut off, they are visible to humans, but they are the same as darkness for insects. Therefore, products that cut off the ultraviolet rays of fluorescent lamps have recently been sold.
For example, there is a cylindrical body made of an ultraviolet absorber. A fluorescent lamp tube is put in this tube, and both ends are taken out for use.
There is also a type that is attached to a plate glass in front of a fluorescent lamp.
Of course, any type of visible light must pass through.
[0005]
[Problems to be solved by the invention]
However, all the conventional ones have the following drawbacks.
First, it takes time and effort to wear a cylindrical one. In other words, it is necessary to remove the fluorescent lamp tube once, put it in a tube, and reattach the fluorescent lamp tube. Further, since the tube is not in close contact with the fluorescent lamp tube, the visible light transmittance is lowered. For this reason, a fluorescent lamp tube in which a sheet is adhered in advance is also known. Since this is brought into close contact with each other at the factory, it is inevitably expensive.
[0006]
The type that is attached to a glass plate that is used as an inexpensive and simple one cannot be used for a glass plate that does not have a glass plate in front of a fluorescent lamp.
[0007]
[Means for Solving the Problems]
Therefore, the present inventor has completed the cover sheet of the present invention as a result of earnest research, and the feature thereof is a plastic sheet having an ultraviolet absorbing ability, which is used for natural winding around a fluorescent lamp tube, It is in the point of heat setting in a cylindrical shape.
[0008]
Here, the plastic sheet having an ultraviolet absorbing ability includes a normal plastic sheet mixed with an ultraviolet absorbent, a plastic itself having an ultraviolet absorbing ability, and a sheet having both functions.
The ultraviolet absorber is usually one that absorbs ultraviolet rays and converts them into heat energy. For example, there are triazole type, salicylic acid ester type and acrylonitrile type.
As the resin itself, (meth) acrylic and the like are generally said to absorb ultraviolet rays to some extent.
[0009]
Any plastic may be used as long as it is transparent or translucent and can be heat-set. Examples thereof include PET (polyethylene terephthalate), polyvinyl chloride, polyolefins such as polyethylene and polypropylene, acrylic resins such as MMA, and polyamides.
[0010]
Heat setting refers to forming a sheet so that a predetermined state is natural by heating. In many cases, the heating temperature may be lower than the heat seal temperature. Usually, it is about 120-150 degreeC. Further, the predetermined shape is preferably a cylindrical shape thinner than the fluorescent lamp tube.
As a production method, a method of winding a plastic sheet around an iron pipe (which may be an iron bar or the like) slightly thinner than a fluorescent lamp tube and heating it, a method of heating the wound material in a thin tube, and the like are free. The width of the sheet may be about the length of the fluorescent lamp tube, and the length is about the circumference of the fluorescent lamp tube.
The heating time is a time during which the plastic is heat set, and is not particularly limited.
[0011]
As an example of a specific manufacturing method, a sheet (single layer type) that has come out of an extruder is cut into a predetermined length. Wrap it around an iron pipe, put it in a cylinder that is thicker and thinner than the fluorescent lamp tube, and pull out the core pipe. And let the inside of a heater pass. When the heat can be set, cool water is sprayed or immersed in cold water to cool. That's it!
[0012]
The sheet of the present invention may be composed of multiple layers. Then, the difference in heat shrinkage may be used so that it can be more easily formed into a predetermined shape. In the case of two layers, the same plastic with a difference in thickness, the one with a different stretch ratio, or another plastic with a difference in thermal shrinkage are preferable.
Moreover, you may use the layer (The thing which has another function is also possible) without a difference in heat shrink as one or an intermediate | middle layer.
[0013]
For example, when two layers of PET 10μ and 50μ are used and heat-set, the thinner one shrinks more, so the thin one becomes the inside and becomes a cylinder. In the same manner, when two layers are formed with a four-fold stretch and a two-fold stretch, the four-fold stretch becomes the inside and becomes a cylindrical shape. Of course, even in these cases, it is better to wrap around the iron pipe or the like.
[0014]
When two layers are used, they are usually bonded with an adhesive, but an ultraviolet absorber may be mixed in the adhesive.
[0015]
The thickness of the sheet of the present invention may be about 25 μ to 500 μ.
Further, the sheet of the present invention may be colored to provide a translucent colored fluorescent lamp.
[0016]
Usually, since the fluorescent lamp tube irradiates light only in one direction, it is better to reflect the light on the opposite side as much as possible and irradiate it in a predetermined direction. For this reason, in the present invention, aluminum may be affixed to about half the area of the sheet. For example, an aluminum foil is pasted or aluminum is vapor deposited.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, based on an embodiment of the present invention, the present invention will be described in more detail.
FIG. 1 is a perspective view showing an example of the sheet 1 of the present invention. By heat setting, it is shaped to be wound twice so that the inner diameter becomes about 2 cm. For fluorescent lamp tubes with an outer diameter of about 3 cm. In this example, the material of the sheet 1 is PET and has a two-layer structure.
This may be wound around a fluorescent lamp tube, or a fluorescent lamp tube may be inserted therein.
[0018]
FIG. 2 shows a method of simply winding the sheet 1 of the present invention around the fluorescent lamp tube 2. This is where the present invention is wound upside down (in this figure, the inside is the inside, but the opposite is also possible), and it is pressed against the fluorescent lamp tube and rewound. In this way, it can be easily wound around a fluorescent lamp tube already mounted.
Since the present invention sheet 1 itself tends to have a heat-set shape (thin cylindrical shape), it does not wrap around the fluorescent lamp tube.
[0019]
In the case where aluminum is affixed in half, after winding, the sheet should be turned so that the aluminum part is just on the opposite side. Of course, since it is not bonded, it can be turned easily.
[0020]
【The invention's effect】
1) Because it is heat-set, it is very easy to attach to a fluorescent lamp tube.
2) Even if the fluorescent lamp is turned on, insects do not come. This is particularly useful in food factories, vending machines, coin laundry, and the like.
3) There is no discoloration of surroundings due to ultraviolet rays. Since the food, such as cream, does not change color, the product value is also increased.
4) Human health is also reduced because UV rays are cut for humans.
5) Since it is covered with film, it will prevent the fragments from scattering when the fluorescent lamp tube breaks.
6) Can be used for coloring and various decorations.
7) It is possible to improve the illuminance with aluminium.
8) Printing a certain pattern eliminates the shadow that occurs in fluorescent lamp tubes of internally illuminated signboards.
9) Since it is in close contact with the fluorescent lamp tube, it can also be used for fluorescent lamp equipment that uses a special holder with an existing reflector.
10) A specific wavelength filter may also be laminated so that only a specific wavelength is irradiated for agriculture or industry.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a sheet of the present invention.
FIG. 2 is a perspective view showing a case where an example of the sheet of the present invention is attached.
[Explanation of symbols]
1 Invention sheet 2 Fluorescent lamp tube

Claims (1)

It is a plastic sheet having an ultraviolet absorbing ability, and is heat-set by cutting the plastic sheet having an ultraviolet absorbing ability from the extruder into a predetermined length, winding it around a pipe or a rod and heating it to 120 to 150 ° C. And a fluorescent lamp tube cover sheet characterized by being configured to naturally wrap around the fluorescent lamp tube.

Images