JP3023031U - Flashing rod-shaped light emitter - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a safe blinking rod-shaped light-emitting body that emits light of any color without any electric energy applied to the light-emitting part itself, without heating. [Structure] A concentrating xenon flash lamp with a reflecting mirror 5 having a main optical axis facing at least one end surface of a rod-shaped transparent body 2 having a white diffuse reflection layer surface 3 on a part of its side surface and having a smooth surface. And a light-emitting rod-shaped light emitter with an optical filter inserted in this gap as necessary.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a novel rod-shaped illuminator, and more particularly to a rod-shaped illuminator that can be handled safely without any voltage being applied to the illuminator and does not cause heat generation. Provide a luminous body suitable for lighting, interior lighting equipment, outdoor illuminated signboard, night warning signboard, etc.

[0002]

[Prior art]

 Until now, neon tubes and fine fluorescent tubes have been used for rod-shaped light emitters. A high voltage had to be applied to make the neon tube emit light, specialized knowledge was required for the installation work, it could only be used in places where it could not be touched by the human body, and a great deal of cost was required for maintenance. And Although it is possible to make a fluorescent tube emit light at a relatively low voltage compared to a neon tube, the glass tube is easily damaged, the temperature of the tube wall rises, and the length and emission color cannot be freely selected. There wasn't. There is also a method of arranging and lighting a small tungsten lamp or light emitting diode that can be driven at a low voltage of 24 V or less for linear illumination, but these are only intermittent bright points, and they are connected in a line or rod shape. It was not possible to obtain a luminescent material, the range of luminescent color selection was narrow, the wiring was complicated, and maintenance was troublesome.

[0003]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and, in addition, to provide an instantaneous light rod-shaped light-emitting body that emits scattered light even with arbitrary color light.

[0004]

[Means for Solving the Problems]

 As a result of earnest studies by the present inventors in order to achieve the above-mentioned object, a part of the longitudinal surface of a glass round bar or an acrylic resin square bar or a transparent resin polygonal bar such as polystyrene or polycarbonate having a smooth surface. A white diffuse reflection layer, which is continuous or intermittent in the longitudinal direction, is provided, and when the light source with a concentrating xenon flash lamp with a reflecting mirror is arranged with an interval so that the main optical axis faces the end face of the bar, it is turned on. We found that a transparent rod instantly reflected light in the shape of a rod, and that an excellent blinking rod-shaped luminous body was obtained.

Thus, according to the present invention, since the light source and the body of the light emitter are not in contact with each other, there is no heat transfer from the light source and the temperature rise is small. The light emitter itself is an electrical insulator, and there is no fear of electric shock. A blinking rod-shaped luminous body is obtained. Furthermore, if a filter such as colored glass is appropriately inserted in this gap, a flashing rod-shaped light-emitting body showing any color light can be obtained.

As the rod-shaped body, the ratio of the minor axis or short side of the cross section to the major axis or long side is approximately 1 to 3 or less, and the length is preferably 10 times or more of the minor axis or short side, and a plate outside this range. When a wide white diffuse reflection layer is provided on the side surface on the long side of the bar, most of the incident light is reflected by the diffuse reflection layer in the vicinity of the incident end face and emitted from the rod body, and up to a long distance from the incident end face. It does not emit light, and the incidence efficiency of light from the xenon flash lamp to the rod is also reduced.

In a xenon flash lamp with a reflecting mirror that produces a focused beam that is close to a parallel beam, the distance between the lamp and the transparent rod can be separated by a considerable distance, but it can be used for focusing lamps or divergent lamps. Therefore, if the interval is set so that the spread of the main beam is close to the cross-sectional area of the bar, the luminous efficiency of the bar increases. The optimum interval depends on the cross-sectional shape of the rod, the refractive index, and the light-collecting performance of the flash lamp used, but is approximately 5 mm to 10 cm, and the incident light component above the critical angle that causes total internal reflection at the air interface inside the rod. Is adjusted appropriately so that

To make the white diffuse reflection layer of the present invention, a commercially available white paint or printing ink is applied to a part of the side surface of the bar, or a fine joint layer is provided by the method of Japanese Patent No. 1872167. it can.

If a reflective layer is provided on a part of the side surface of the transparent rod with a uniform width from the light incident end face to the tip of the rod, the luminance near the light incident portion is high and the luminance gradually decreases as the distance increases. If the vicinity of the light section is made thin and becomes thicker toward the tip, the entire rod can emit light uniformly. It is possible to emit light according to the shape of the reflective layer by providing an intermittent pattern or providing a reflective layer only in a part of the longitudinal direction.

[0010]

[Action]

 Light from an appropriately condensed light source enters the transparent rod through the air gap from the end face, and incident light that exceeds the critical angle of the rod is repeatedly totally reflected at the air interface on the side face of the rod and directed to the non-incident end side. The incident light that entered the white diffuse reflection layer provided on a part of the side surface and was scattered and reflected in this process is rich in scattered reflection components below the critical angle and is emitted from the side surface of the rod to the air. Is emitted. When observed from the side, it looks as if the entire bar is emitting light uniformly. Appropriate light-collecting ability is effective for efficiently introducing the light from the light source into the transparent rod, and the gap between the transparent rod and the light source blocks the conduction heat and is used as a cooling air flow path for the light source. Yes, it also provides insertion space such as colored filters and heat absorption filters.

If a reflecting material is provided on the end face opposite to the incident end face, the light emission brightness of the rod increases, and if light-collecting xenon flash lamp light sources are provided at both ends of the transparent rod, the emission brightness is further increased. It is improved, and a blinking rod-shaped luminous body having a length of about 30 m is obtained. The transparent rod can be deformed by bending if necessary, or multiple rods can be joined and branched within a limit angle where the incident light keeps total reflection.

[0012]

【Example】

 Example 1 Five polymethylmethacrylates each having a side length of 15 mm and a length of 2 m were prepared, and a commercially available white coating material was applied to one side surface of each square bar to a thickness of 120 μm and dried. Five acrylic rods were joined with dichloromethane to form a rod body having a length of 10 m. Polish one end face smoothly and attach the attached mirror to the Xenon flash lamp MF T3227 manufactured by Elebum Co., Ltd., so that the main optical axis goes to the center of the square rod from a distance of 8 mm from the polished end face of the square rod. A 100 microfarad capacitor, which was installed and charged at 330V, was discharged to emit light. The side surface of the square rod emitted a flash of light uniformly, and the light emitting shape was also deformed according to the bending deformation of the square rod. By inserting a coloring filter into this gap, the emission color could be adjusted freely.

Example 2 A white paint is partially coated on the side surface of a polycarbonate rod having a diameter of 30 mm and a length of 1 m, and the width is about 10 mm and the length is about 5 cm at intervals of about 5 cm parallel to the longitudinal direction. A white scattering reflection layer was provided and one end face was polished. A flash unit of a commercially available single-use camera was installed at a distance of 4 cm from the polished end face, the optical axis of the flash unit was opposed to the end face, a red colored film was attached to the gap, and a 150 microfarad capacitor charged to 270 V was discharged. It was The rods flashed in red depending on the shape of the reflective layer, and could be visually recognized even at a distance of 1 km at night.

[0014]

[Effect of device]

 The rod-shaped light emitting device of the present invention is a cold light source that can efficiently capture the radiated light from the light source into the transparent rod material and is highly efficient. Moreover, the light emitting part is completely cut off from the light source part and there is no risk of electric shock during use. Also, by attaching a colored filter, arbitrary colored light can be obtained and maintenance is easy.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a flashing rod-shaped light emitting device of the present invention.

FIG. 2 is a cross-sectional view showing an example of a blinking rod-shaped light emitting device provided with a filter insertion portion of the present invention.

FIG. 3 is a cross-sectional view showing an example of a white diffuse reflection layer provided in the blinking light-emitting luminous body of the present invention and an external view seen from the side.

[Explanation of symbols]

 1 Flashing luminous tube 2 Transparent rod 3 White diffused reflection layer 4 Filter insertion part 5 Reflector

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Claims (2)

[Scope of utility model registration request] 1. A xenon flash lamp with a condensing reflecting mirror is provided at least on one end surface of a rod-shaped transparent body having a smooth surface having a white irregular reflection layer surface on a part of its side surface so that its main optical axis faces the same. A blinking rod-shaped luminous body arranged. 2. The blinking rod-shaped luminous body according to claim 1, wherein an optical filter insertion portion is provided in a gap between the xenon flash lamp light source and the end face of the transparent rod.