JPH0732801U - Small light - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a compact illumination lamp having a small and lightweight and robust structure, which can use a small dry battery of AA size or less. [Structure] An opening portion 14 in which a power supply line is drawn is provided in the cylinder of a commercially available flashlight in which a dry battery 4 is housed in a cylindrical cylinder 3.
The power supply line is connected to two metal conductors, and a plurality of LED lamps 13 are connected between the two metal conductors.
The metal conductor to which the ED lamp is connected is covered with a plastic cylindrical cover 12, and the plastic cylindrical cover is fitted and locked to the dry battery storage portion of the cylindrical body of the commercial flashlight.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an indicator light having a lamp housed in a cylindrical red cylinder used at a road construction site at night, and more particularly to a compact and lightweight compact indicator light.

[0002]

[Prior art]

 FIG. 2 shows an example of the structure of a conventional illumination lamp. The lower half of the indicator light 20 is a commercially available flashlight 21 used as it is, and two AA type dry batteries 23 are housed in a cylindrical body 24. A commercially available flashlight switch is used as the switch 25. The mini-lamp of the flashlight is removed, and in its place, metal conductors 26 and 27 in which three LED lamps are connected in parallel are connected. The metal conductors 26 and 27 to which the LED lamp 13 is connected in parallel are covered with a cylindrical transparent plastic cover, and a red fluorescent film 18 is inserted in the cover 29. Then, the cylindrical plastic cover 29 is fixed to the lower half portion 21 by attachment or the like at a threaded portion 30 of the head of the flashlight.

The operation of such an indicator light is as follows. That is, when the slide type switch 25 is turned on similarly to the operation of the flashlight, the LED lamp 13 connected in parallel by the metal conductors 26 and 27 emits light instead of the miniature lamp of the flashlight. The light emitted from the LED lamp is scattered by the red fluorescent film 18, and the entire cylindrical plastic cover 29 appears to emit red light from the outside of the indicator lamp 20.

[0004]

[Problems to be solved by the device]

 However, as the brightness and efficiency of LED lamps increase, it is necessary to use a small-sized indicator light of the same shape that uses small dry batteries of AA size or less, instead of AA dry batteries as shown in the conventional technology. Is coming. However, the threaded portion 30 of the head of a flashlight using a commercially available AA battery is significantly smaller than that portion of the AA type, and especially the axial length is shortened. For this reason, if the cylindrical transparent plastic cover is fixed at the threaded portion 30 by adhesion or the like, the adhesive strength is weak because the axial length of the threaded portion 30 is short. Therefore, when bending stress acts between the cylindrical body 24 for accommodating the dry battery 23 corresponding to the handle and the plastic cover 29, the adhesive is peeled off at the fixed portion 30 or the plastic cover 29 is bent with respect to the cylindrical body 24. Damage such as crushing will occur.

The present invention has been made in view of the above problems of the prior art, and provides a compact illumination lamp having a small and lightweight and robust structure, which can use a small dry battery of AA size or less. The purpose is to

[0006]

[Means for Solving the Problems]

 The small-sized indicator light of the present invention is provided with an opening for pulling out a power source line in the barrel of a commercially available flashlight for accommodating a dry battery in a cylindrical barrel body, and the power source line is connected to two metal conductors. A plurality of LED lamps are connected between the metal conductors of the book, and the metal conductor to which the LED lamps are connected is covered with a plastic cylindrical cover, and the plastic cylindrical cover covers the dry cell of the commercial flashlight cylinder. It is characterized by being fitted and locked to the part.

[0007]

[Action]

 With the above configuration, the plurality of LED lamps emit current due to the current flowing from the dry batteries. Since the plastic cylindrical cover is fitted and locked to the battery storage part of the commercially available flashlight cylinder, the plastic cylinder cover and the plastic cylinder cover, which is the handle of the indicator light, are It has a strong structure against bending stress. That is, the conventional problem that the breakage is likely to occur at the connecting portion between the cylindrical portion of the flashlight and the plastic cylindrical cover portion is solved.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. The lower half of the small light 1 is a commercially available flashlight 2. However, unlike the conventional illumination lamp shown in FIG. 2, metal conductors 26 and 27 in which three LED lamps 13 are connected in parallel are arranged at the bottom portion of the flashlight 2. Two AA size batteries 4 are stored in the flashlight barrel 3, and the head part 6 of the flashlight is screwed with the cover 6 so that the miniature lamp 5 is firmly in contact with the connection conductor of the dry battery. It is fixed. The slide type switch 7 is a switch of a commercially available flashlight. The spring 10 at the bottom of the flashlight is also used as it is, and the AA dry battery 4 is fixed to the lower portion of the cylindrical body 3 by screwing with the cover 6. Therefore, the dry battery 4 can be pulled out and replaced by removing the cover 6, as in the case of a commercially available flashlight.

In the flashlight 1 of the present embodiment, an opening portion 14 is provided in the barrel 3 of the flashlight, and the + and-side power lines of the flashlight are drawn out. The power supply line is connected and fixed to the metal conductors 26 and 27 in which the LED lamps 13 are connected in parallel. Therefore, when the switch 7 is turned on, a current flows from the dry cell 4 to the LED lamp 13 and the LED lamp 13 emits light. When the switch 7 is turned off, the LED lamp 13 is turned off. A red fluorescent film 18 is inserted in the plastic cylindrical cover 12.

The plastic cylindrical cover 12 is fitted and fixed to the tubular body 3 of the battery housing portion of the flashlight via the spacer 11. The spacer 11 may be made of rubber or a material having elasticity such as a magic tape as long as it can lock the plastic cylindrical cover 12 to the cylindrical body 3.

The miniature lamp of the head portion of the flashlight 2 does not emit light due to the voltage drop of the LED lamp 13. Therefore, even if the switch 7 is turned on, there is no current consumption in the mini lamp portion.

In the small-sized light of this embodiment, a commercially available flashlight is provided with an opening, the + and-side power supply lines are taken out from the opening, and the LED lamps are connected to a metal conductor connected in parallel. Then, it is covered with a transparent plastic cylindrical cover in which a red fluorescent film or the like is inserted, and the transparent cylindrical plastic cover is deeply inserted into the cylindrical portion of the flashlight, and a spacer 11 is used to fit and lock it. Therefore, the small-sized flashlight of the present invention can be manufactured by a simple process using an inexpensive commercially available flashlight.

Although the above-mentioned embodiment uses the AA type dry battery, it is needless to say that the present invention can be applied to an indicator light using the AA type dry battery or the like. As described above, various modifications can be made without departing from the gist of the present invention.

[0014]

[Effect of device]

 As explained above, due to the higher brightness and higher efficiency of LED lamps, the size of AA batteries or batteries smaller than that can be used to achieve the same brightness as conventional lighting. A compact and lightweight indicator light with a long battery life has been realized, and because the plastic cylindrical cover is a mating type, the length of the mating part makes it compact and extremely robust.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of a small-sized illumination lamp according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a structure of a conventional illumination lamp.

[Explanation of symbols]

 1 Small illumination light 2 Commercially available flashlight 3 Cylindrical body 4 AA dry cell 5 Miniature light bulb 6 Cover 7 Switch 12 Plastic cylinder cover 13 LED lamp 14 Opening 18 Fluorescent film

Claims (2)

[Scope of utility model registration request] 1. A commercially available flashlight in which a dry battery is housed in a cylindrical body is provided with an opening in which a power line is drawn out, the power line being connected to two metal conductors. A plurality of LED lamps are connected between the conductors, and the metal conductor to which the LED lamps are connected is covered with a plastic cylindrical cover, and the plastic cylindrical cover is fitted to the dry battery storage portion of the commercial flashlight cylinder. A small light that is turned off. 2. The small illumination lamp according to claim 1, wherein the dry battery has a size of AA type or smaller.