JP2002033007A - Electronic emission lamp and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To overcome the problems of an electronic emission lamp used for lighting the underwater in the underwater work for example which is dangerous to the worker handling the lamp to which high voltage electricity is supplied, and is expensive at the cost of severe seal for preventing electric leakage. SOLUTION: Many LEDs are fixed to slender electronic substrate in almost the same direction, the electronic substrate is put into a slender transparent cylinder, and a space between the cylinder and the electric substrate is integratedly filled with a filler of transparent synthetic resin to prevent electric leakage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic light-emitting lamp which is suitable as an underwater light-emitting lamp for performing a water leak test using light in water and for inspecting the presence or absence of a surface flaw.

[0002]

2. Description of the Related Art Conventionally, inspection of an object to be inspected has been performed by immersing the object in a water tank, projecting light from above the water surface, and visually inspecting for the occurrence of air bubbles. Therefore, a method of inspecting the light source by placing the light source in water was adopted because there was a problem that the inspection light was lowered or an inspection error was easily caused.
The electronic light-emitting lamp 90 used therein is such that an incandescent lamp 92 is placed in a spherical glass container 91, and the socket 93 of the incandescent lamp 92 and the glass container 91 are made of rubber cushioning material. In addition to the above, it is fixed by using a boot and a seal is provided at the outlet of the electric wire, and this is sunk into an inspection water tank together with a high-voltage electric wire connected to a power supply.

[0003]

However, in order to prevent leakage from the socket or the electric wire of the incandescent light bulb which is lit at a high voltage into the inspection tank, the electric light is transmitted between the electric light bulb and the electric wire and the glass container surrounding them. Since it has a complicated seal structure, it is liable to be damaged when subjected to vibration or impact, and may be leaked due to flooding inside. In addition, the number of parts is large and manufacturing and assembling are not easy, so that it is extremely expensive. In addition, if the bulb burns out during use, the inspection work is interrupted and the replacement work takes a long time.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to accommodate an elongated electronic substrate in which a large number of light emitting diodes are mounted in substantially the same direction in an elongated transparent cylinder. The problem can be solved by filling the space between them with a filler made of a transparent synthetic resin and integrating them. There, one end of the tubular body is closed with a closing lid, and the other end of the electric wire connected to the electronic board is pulled out through the closing lid to the outside. Preferably, it is supported on the outer surface of the closing lid. Also, a step of preparing an electronic board on which a large number of light emitting diodes are mounted, and a transparent cylinder having a predetermined length, and inserting the electronic board into the cylinder; And a step of injecting a filler made of a transparent synthetic resin between them.

[0005]

In an electronic light emitting lamp, a filler made of a transparent synthetic resin is filled between a transparent cylinder and an electronic substrate housed therein, and light emitted from the light emitting diode emits light between the filler and the cylinder. Is projected to the outside. The electronic substrate is buried in the filler and reinforced by the cylindrical body and the filler to increase the strength. The electric wire connected to the electronic board passes through the filler and is taken out through the through hole of the closing lid. The electric wire is covered by the electric wire protection tube near the through hole, so that it cannot be bent at a sharp angle. At the time of manufacturing, a large number of light emitting diodes are mounted on the electronic substrate prepared in advance, and the positions of the light emitting diodes are determined with respect to each other. When such an electronic board is placed inside the transparent cylinder whose one end is closed by the closing lid, the space formed around the electronic board opens to the side of the cylinder without the closing lid, and the transparent composite A cavity into which the resin is to be injected is formed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes an electronic light emitting lamp. An electronic light emitting lamp 10 includes a number of light emitting diodes 12, 1
Electronic substrate 11 composed of an elongated substrate 11a to which the electronic substrate 11 is attached, and a transparent cylinder 1 containing the electronic substrate 11
3, and a space left between the cylindrical body 13 and the electronic substrate 11 is filled with a filler 14 made of a transparent synthetic resin.

The light emitting diodes 12 are arranged in parallel with the short side of the substrate 11a to form a pair, and a large number of the light emitting diodes 12 are arranged in parallel (longitudinal direction) with the long side.
The light emitting surfaces of the respective light emitting diodes 12 are mounted so as to be directed in substantially the same direction. As shown in FIG. 2, the type of the light emitting diode 12 is a red diode 12r only at each pair at both ends in the longitudinal direction, and a white diode 12w at the rest.

The cylindrical body 13 is a commercially available transparent synthetic resin tube,
Alternatively, the glass tube is cut to a required length, and one of its ends is closed by a closing lid 16. The closing lid 16 is provided with a through hole 16a at the center, through which an electric wire 15 connected to the electronic board 11 is inserted. The electric wire 15 is connected to an external power supply (not shown) through a remote controller (not shown). Reference numeral 16b denotes an electric wire protection tube attached to the closing lid 16, which is fitted and adhered to a concave portion 16f provided on the outer surface of the closing lid 16. Therefore, the electric wire 15 is connected to the closing lid 16.
The wire 15 is not bent at a sharp angle outside of the wire, and even if it is repeatedly bent, the electric wire 15 itself is not damaged and its life can be extended.

The electric wire 15 is not limited to the one connected to an external power supply, but may have a configuration in which a dry battery 17 is built in and does not need to be connected to an external power supply. That is, as shown in FIG.
Can be detachably attached by screws, and the dry battery 17 and the changeover switch 19 are accommodated in an empty space 18 formed therebetween.

Here, the changeover switch 19 turns on and off the power supply and the white and red light emitting diodes 12w and 12r.
And is provided to switch between. Reference numeral 19a denotes an operator of the changeover switch 19, the outer surface of which is a rubber cover 16
d is covered so as not to be flooded. Reference numeral 21 denotes a packing, which seals between the closing lid 16 and the battery case 16c so as not to leak water.

Next, a method for manufacturing the electroluminescent lamp 10 will be described. First, an electronic substrate 11, a cylindrical body 13, and a filler 14 are prepared as members constituting the electronic light emitting lamp 10. The light emitting diode 12 is attached to the electronic substrate 11 in advance and wired, and the electric wire 15 is connected thereto. In the example of FIG. 2, a closing lid 16 is attached to the electric wire 15. The material of the filler 14 is selected from materials having high transparency that can be adhered to the electronic substrate 11 and the cylindrical body 13 or the synthetic resin forming the outer shell of the light emitting diode 12. For example, epoxy resin and acrylic resin are suitable.

When all the parts are completed, the electronic substrate 1
1 is connected to the cylindrical body 13 with the unconnected side of the electric wire 15 first.
Then, the closing lid 16 fitted to the electric wire 15 is finally pushed into the inner surface of the end of the cylindrical body 13 by hand. Thus, the electronic substrate 11 is held at a predetermined position in the cylindrical body 13.

Next, the tubular body 13 is held upright with the closing lid 16 side down. As a result, a cavity for the filler 14 is formed on the inner surface of the cylindrical body 13 so that the closed lid 16 side is the bottom and the opening side is the injection side. A liquid filler 14 is injected into the cavity from the upper end of the cylindrical body 13 to bury the electronic substrate 11 therein. Therefore, filler 1
When the resin 4 is hardened, the relative position between the electronic substrate 11 and the cylinder 14 is fixed, and water does not enter the interior of the cylinder 13.

The method of using the thus-produced electroluminescent lamp 10 will be described with reference to FIG. The electronic light emitting lamp 10 is put near the inner wall surface of the test water tank 30 filled with water, and is placed on the bottom of the water tank 31 with the center part turned in a lit state. Next, the fuel tank of the motorcycle, which is the inspection object 32, is put into water, and the pressurized air is pumped into the inspection object 32. Then, only the white diode 12w is turned on, and the reflected light on the surface of the inspection object 32 is observed to check for the presence of scratches and irregularities on the surface.

When one test is completed, the changeover switch 1
9 to light the red diode 12r. As a result, if air bubbles come out of the inspection object 32, the light impinges on the air bubbles and reflects the air bubbles.
This makes it easier to inspect the watertightness and eliminates the risk of electric shock even if there is a leak.

The application of the electronic light-emitting lamp 10 according to the present invention is not limited to the above-described inspection apparatus, but may be applied to all kinds of lighting such as a diver, a deep-sea exploration boat, and the like, which are operated underwater or subjected to severe impact. Available.

[0017]

According to the first aspect of the present invention, an electronic light emitting lamp 1 is provided.
In spite of using a light emitting diode which can provide bright illumination with low power as a light source of 0, the light emitting diode is covered with a cylindrical body and a filler, and is resistant to collision and other external impacts. In addition, even when this is used in water, it is possible to safely work underwater without immersion in the electronic substrate 11 or conversely, leakage of electricity into the water. According to the invention of claim 2, the wire protection tube 16b that covers the wire 15 connected to the light source of the electroluminescent lamp 10 and prevents damage is attached to the outlet side of the closing lid 16, so that the life of the wire 15 can be reduced with a simple structure. Can be stretched. According to the invention of claim 3, the electronic substrate 11
When filling the transparent resin as the filler 14 around the
Since the cylindrical body 13 to which the closing lid 16 is attached forms a space into which the filling material 14 is to be poured, that is, a cavity, a special mold is not required for filling the filling material 14 and equipment investment is reduced. And so on.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a front view of an electroluminescent lamp.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a partial sectional view showing a modification of FIG. 2;

FIG. 5 is a sectional view of an inspection device using an electronic light emitting lamp.

FIG. 6 is a sectional view showing a conventional electroluminescent lamp.

[Explanation of symbols]

 Reference numeral 10: electronic light-emitting lamp 11: electronic substrate 11a: substrate 12: light-emitting diode 12r: red light-emitting diode 12w: white light-emitting diode 13: tubular body 14. ··· Filler 15 ··· Electric wire 16 ··· Closed lid 16a ··· Through hole 16b ··· Electric wire protection tube 16c ··· Battery case 16d ··· Rubber cover 16f ··· Recess 17. ··· Dry cell 18 ··· Empty room 19 ··· Changeover switch 19a ··· Operator 21 ··· Packing 30 ··· Water tank 31 ··· Water tank 32 ···

Claims (3)

[Claims] An elongated electronic substrate in which a large number of light emitting diodes are mounted in substantially the same direction is accommodated in an elongated transparent cylindrical body, and a space created between the cylindrical body and the electronic substrate is transparently synthesized. An electronic light-emitting lamp that is integrated with both by filling it with a resin filler. 2. The electronic device according to claim 1, wherein one end of the cylindrical body is closed with a closing lid, and the other end of the electric wire connected to the electronic board is drawn out through the closing lid. An electronic light-emitting lamp in which the space between the electric-wire protection tubes that cover the housing is closed and supported on the outer surface of the lid. 3. A step of preparing an electronic board on which a large number of light emitting diodes are mounted, and a transparent cylinder having a predetermined length, and inserting the electronic board into the cylinder. Injecting a filler made of a transparent synthetic resin between the substrate and the substrate.