JP2005122906A - Fluorescent lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact fluorescent lamp having a single base with improved safety. <P>SOLUTION: Scattering of broken glass pieces is prevented by covering an area ranging from an end part of the arc tube on the other side of the base to the base by a heat-shrinkable tube as shown in the figure. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fluorescent lamp having a tube on the surface of a fluorescent lamp and having a glass piece scattering prevention function.

Since most of fluorescent lamps are made of glass, there is a risk that glass will break and glass pieces will scatter when dropped or impacted from high places. As a fluorescent lamp in which a tube is coated on the surface of the lamp in terms of safety so that the glass piece does not scatter even when the fluorescent lamp is broken, there is a lamp as disclosed in, for example, JP-A-6-275236.
Until now, in addition to fluorescent lamps in which tubes are covered with straight and round tube fluorescent lamps, fluorescent lamps in which tubes are covered are also required for compact fluorescent lamps with single caps, which have been in increasing demand in recent years.

The single-piece compact fluorescent lamp is mainly used as a table lamp at home and as a ceiling lamp for store lighting for business use. When a single-piece compact fluorescent lamp is used as a ceiling lamp, the lamp is fixed to the fixture at the base part due to its structure. Therefore, when replacing the lamp, the risk of falling is higher than other lamps. When the single-piece compact fluorescent lamp is damaged by an impact such as dropping, the glass pieces are scattered around and there is a safety problem.
The problem to be solved by the present invention is to provide a one-piece compact fluorescent lamp having a scattering prevention function.

  The fluorescent lamp having the glass piece scattering prevention function of the present invention is a one-piece compact fluorescent lamp in which arc tubes are arranged in parallel, and the range from the end of the arc tube tube on the side opposite to the cap to the cap portion is a heat shrinkable tube. By using and covering, even when the lamp is broken, the glass pieces are not scattered around, and the safety can be improved.

  Furthermore, the fluorescent lamp having a glass piece scattering prevention function of the present invention uses a heat shrinkable tube that is cylindrical and open on both sides.

  The fluorescent lamp having the glass piece scattering preventing function of the present invention can prevent the glass piece from scattering by the heat-shrinkable tube coated on the lamp surface even when the lamp is broken.

  FIG. 1 is an external view of a single-piece compact fluorescent lamp having a glass piece scattering prevention function. For example, in the case of FPL36 as the single-piece compact fluorescent lamp 1, a FPL36 is covered with a cylindrical heat-shrinkable tube 2 having an outer diameter of 50 mm, which is made of, for example, PET (polyethylene terephthalate). Then, the lamp is heated and shrunk from both ends, and the lamp and the tube are brought into close contact with each other. Thereafter, in order to expose the misuse prevention groove, a range of 14.2 mm from the bottom of the base part to the arc tube side is cut out to form an uncoated portion 3. Further, on the bulb head side opposite to the base, an extra tube not covered with the lamp is cut off with the tube uncoated portion 4 left.

  The fluorescent lamp having a glass piece scattering prevention function manufactured in this way can be expected to have an effect of preventing scattering when it is broken, and the misuse prevention groove of the base is not covered with a tube, so it can be easily mounted on an instrument. be able to.

  In addition, it is obvious that a fluorescent lamp having a glass piece scattering prevention function can be obtained in the same procedure with other single-piece compact fluorescent lamps.

One Example of the external view of the fluorescent lamp which has a glass piece scattering prevention function of this invention is shown.

Explanation of symbols

  1 ··· One-piece compact fluorescent lamp, 2 ··· Heat-shrinkable tube, 3, 4 ··· Tube uncoated part.

Claims (2)

  In a single-piece compact fluorescent lamp having a structure in which arc tubes are arranged in parallel and one end of the tube is joined, the arc tube from the end of the arc tube on the side opposite to the cap from the end of the cap on the pin side of the cap A fluorescent lamp having a glass piece scattering prevention function characterized in that a range of up to 14.2 mm is coated on the side with a heat-shrinkable tube. 2. The fluorescent lamp having a glass piece scattering prevention function according to claim 1, wherein a heat shrinkable tube having a cylindrical shape and open on both sides is used.

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