JP2003068103A - Aircraft obstruction light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aircraft obstruction light that has blinking performance capable of satisfying standards as various obstruction lights and especially middle and high intensity obstruction lights, and can light reflection type light emitting diodes sequentially or alternately, can reduce power consumption and is small via an improvement in a blinking method of a light emission part. SOLUTION: The obstruction light comprises: the light emission part comprising the reflection type light emitting diodes having a concave reflecting surface opposed to a light emitting surface of a light emitting device to reflect light emitted by the light emitting device and a radiating surface for radiating out the reflected light substantially parallel, a support disposed in a substantially cylindrical lighting fixture body, and many light emitting diode arrays mounted along the overall circumference of the support; and a power source part disposed in the lighting fixture body. The power source part comprises a light emission control circuit for lighting a plurality of lighting blocks independent in circuitry sequentially in order of circular array, so that the radiated light from the light emission part provides sequential lighting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aviation obstruction light in which reflection type light emitting diodes are arranged in a planar shape or a conical surface shape and are sequentially or alternately lit.

[0002]

2. Description of the Related Art Conventionally, as an aviation obstruction light, Japanese Patent Laid-Open No. 4-14
Japanese Patent No. 4001 and Japanese Utility Model Laid-Open No. 4-102113 are disclosed. This kind of aviation obstruction light is constructed such that a plurality of light emitting diodes are attached to the outer peripheral surface of a conical cylindrical light emitting diode support in a planar or conical shape, and light is emitted from the light emitting diodes toward the outside. Has been done.
Further, a cooling mechanism is added to prevent deterioration of the light emitting diode and reduction in efficiency due to heat generation when the aviation obstruction light is turned on. For example, an intake port and an exhaust port are provided so as to penetrate the inner surface of the light emitting diode array attached to the lamp body,
Further, cooling fins are provided on the inner surface thereof, and a forced air cooling fan is provided.

Further, a heat radiating plate is provided on the top surface or the bottom surface of the light emitting device through a light emitting diode support having a high thermal conductivity, and the heat radiating property is improved so that a large number of light emitting diodes are used for construction illuminators (rotation Lights) and aviation obstruction lights for low altitude have been put to practical use. As the light emitting diode used in this type of aviation obstruction light, a bullet-shaped lens type light emitting diode is used, and a large number of light emitting diodes are arranged and used on a circuit board.

Further, as disclosed in Japanese Unexamined Patent Publication No. 7-235203 or Japanese Unexamined Patent Publication No. 7-228603, when a rotating lamp or an aviation obstruction lamp is operated by blinking, a large number of light emitting diodes arranged in a conical shape are arranged. A method of drawing more attention is used by moving the light emitting points by sequentially lighting each column or each block. A light emission control circuit for sequentially controlling lighting is housed in the lamp body.

As mentioned above, illuminators and aviation obstruction lights using light emitting diodes have been put into practical use. In particular, aviation obstruction lights are used as low obstruction / medium / high intensity obstruction lights.
It is necessary to properly use the obstacles depending on the height above the ground, and the aviation obstacle light specifications standardize the required light intensity and lighting method. At present, the aviation obstruction light using the above-mentioned light emitting diode only satisfies the specifications of the low intensity aviation obstruction light. This is because the lighting system for medium- and high-intensity aviation obstruction lights is different from that for low-altitude aviation obstruction lights, and it is mandatory to repeat blinking.

[0006] Among these, when using a light emitting diode for a high intensity aviation obstruction lamp, there are practically serious obstacles. The luminous intensity performance of the light emitting diode is too low for the required luminous intensity standard, and a large number of light emitting diodes must be used. For this reason, the shape of the illuminator body to be housed becomes too large and many light emitting diodes are used, so there is no superiority compared to conventional obstacle lamps for incandescent bulbs from the viewpoint of reducing power consumption, In some cases, high-luminance aviation obstruction lights that use diodes cannot be put to practical use. Therefore, an incandescent light bulb or a xenon flash lamp is currently used as a light source of a high-intensity aviation obstruction light. This is technically easy to flicker and highly practical, but the life of these light sources is about several hundred hours to several thousand hours, and there is a practical problem in terms of maintenance such as maintenance and inspection.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and has a blinking performance capable of satisfying the standards of various aviation obstruction lights, in particular, medium and high intensity aviation obstruction lights. An object of the present invention is to provide a small-sized aviation obstruction light that is equipped with the above-mentioned light emitting device and has an improved blinking method so that the reflection type light emitting diodes can be sequentially or alternately lit, power consumption can be reduced.

[0008]

In order to achieve the above object, the present invention provides a concave reflecting surface which is provided to face the light emitting surface of a light emitting element and which reflects light emitted from the light emitting element, and the reflected light. A reflection type light emitting diode having a radiation surface that radiates to the outside in a substantially parallel manner, a support disposed in a substantially cylindrical lamp body, and a plurality of light emitting diode arrays mounted along the entire circumference of the support. In an aviation obstruction light consisting of a light emitting part and a power supply part arranged in the lamp body, the power supply part includes a light emission control circuit for sequentially lighting a plurality of circuit-independent lighting blocks in a circular array order, It is characterized in that the emitted light from the light emitting unit is sequentially turned on. Also, a reflection type light emitting diode having a concave reflecting surface provided facing the light emitting surface side of the light emitting element to reflect light emitted from the light emitting element, and a radiation surface for radiating the reflected light to the outside substantially in parallel. A light-emitting portion including a support body disposed in the substantially cylindrical lamp body, a plurality of light-emitting diode arrays mounted along the entire circumference of the support body, and a power supply portion disposed in the lamp body. In the aviation obstruction light, the power supply unit includes a light emission control circuit that alternately lights a plurality of circuit-independent lighting blocks in a circular array order, and is configured to alternately emit light emitted from the light emitting unit. And

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION As a first technical means for solving the above problems, a reflection type light emitting diode is used. This type of light emitting diode is disclosed in Japanese Patent Laid-Open No. 1-2302.
No. 74. The light emitting element, the pair of lead frames, the concave reflecting surface, and the flat reflecting surface are integrally resin-molded, and the light emitted from the light emitting element is reflected by the reflecting surface to form parallel light. It is designed to radiate from the emitting surface to the outside. Using this light emitting diode, a plurality of light emitting diode arrays arranged on a circuit board are arranged in a plane or conical surface to form a light emitting section. Then, it is possible to comply with the standard of the radiant intensity distribution of various aviation obstacle lights.

As a second technical means, the middle and high intensity aviation obstruction lights are obliged to flicker, and when a light emitting diode is used, the driving voltage of the light emitting diode can be turned on at a low voltage of about several volts. This enables the circuit configuration such as the blinking circuit. This is because in the case of an incandescent light bulb, flashing lighting promotes evaporation of the tungsten filament, resulting in a noticeable decrease in luminous intensity and deterioration of life. This is because stable characteristics can be obtained.

When the light emitting diodes are used by blinking and lighting, unlike the conventional incandescent light bulb system and light emitting diode system, the average power consumption is improved while securing the same visual recognition performance as when blinking and lighting all at once. It is desired to reduce it. Specifically, by arranging a large number of light emitting diodes arranged in a circuit into several blocks and sequentially lighting or alternately lighting each block, blinking recognition (visual effect) that is the same as blinking due to collective blinking is obtained. To be

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an aviation obstruction light of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view of a reflective light emitting diode according to the present invention. In the figure, reference numeral 1 denotes a light emitting element, which is mounted on one lead frame 2a through a conductive resin 3 and the other lead frame 2b.
Are electrically connected to each other by a wire 4. Then, the light emitting element with the lead frame is integrally molded by molding with the light transmissive resin 5. Further, a concave reflecting surface 6 is provided so as to face the light emitting surface side of the light emitting element, and is configured to reflect the light emitted from the light emitting element. In addition,
The surface of the concave reflecting surface is formed as a reflecting surface by metal evaporation, and an overcoat layer is formed to protect the evaporation surface. The reflecting surface is designed to meet the specifications of the aviation obstruction light, the light emitted from the light emitting element is reflected by the reflecting surface, and the parallel light is emitted from the flat emission surface 7 to the outside.

A large number of the reflection type light emitting diodes 11 described above are arranged and mounted on the circuit board 21 shown in FIG. 2 to form a light emitting diode array 22. The light emitting diode array is mounted on a circular or conical support 33 arranged inside the lamp body 32 of the aviation obstruction light 31 shown in FIG. In order that the light emitted from each light emitting diode of each light emitting diode array can be uniformly radiated to the outside of the lamp, the emission surface of each light emitting diode is configured to face outward, and this array is formed on the outer surface of the support. It is installed in 46 rows all around.

The outer surface of the lamp body 32 is sealed by a transparent plastic cover 34 to form a light emitting portion 35.
Further, a power source storage section 36 made of aluminum die casting or the like is formed below the light emitting section of the lamp body, and a power source section 37 for blinking control is stored and fixed.

The power supply section is composed of a light emission control circuit 41 as shown in FIG. The light emitting diode array of the 46 columns is divided into 3 blocks in order to blink the blocks in several blocks, and is connected to the lighting circuit in sequence so that the light emitting diode can blink. Figure 4
Among them, D1, D2, and D3 are light-emitting diode arrays divided into three blocks, and the electrical connection in each block is a series connection circuit part in which a circuit in which a resistance for energizing current is connected in series to the light-emitting diodes is used. It is configured by connecting in parallel.

IC1 to IC3 are circuits for controlling the lighting time. The output of IC1 turns on Q1 and the circuits D1 and D2 are turned on. When IC1 times out, IC2 is triggered and IC2 is output, Q2 turns on, and D
Circuits 2 and D3 light up. When IC2 times out, IC3 is triggered, IC3 is output, and Q
3 is turned on, and the D2 and D1 circuits are lit. Such a cycle is repeated and the lights are sequentially turned on.

When the aviation obstruction light of the sequential lighting system was visually observed from a distant horizontal direction as described above, it was confirmed that a blinking lighting state was obtained regardless of the sequential lighting system. It was also verified that the average effective power consumption of the light emitting diode array was about 2/3 as compared with the case of collective blinking.

Next, another embodiment will be described. When the blinking state was confirmed by sequentially increasing the number of lighting blocks in the above configuration, it was found that the blinking recognition was lowered and the light emission source was moved and visually recognized in the sequential lighting of 7 blocks or more. Further, in the above-mentioned configuration, when the number of lighting blocks is set to an even number (4 blocks) and the alternating lighting method is performed for each block, the same visibility as that of collective blinking is obtained as in the first embodiment, and the power consumption is reduced. Was about 1/2 of the conventional one.

Since the aviation obstruction light according to the present invention is required to obtain the blinking standard of medium- and high-intensity aviation obstruction lights, that is, a clear blinking state, a reflection type light emitting diode having a narrow emission angle is used and the obstruction light is blocked. By the sequential lighting or the alternating lighting method for each, the same effect as the blinking effect due to the collective lighting of the incandescent light bulb can be obtained. The sequential lighting method of the light emitting diode array is well known, but in this case, there is only the effect of causing the viewer to recognize the light emitting source that moves by sequential lighting and alerting the viewer.

As described above, the aviation obstruction light according to the present invention uses the reflection type light emitting diode and is a blinking type, and a large number of light emitting diode arrays are divided into several blocks and are sequentially turned on or alternately. By adopting lighting, power consumption can be reduced compared to the collective lighting method such as incandescent light bulbs without losing visibility due to blinking lighting of aviation obstruction lights, and it is possible to obtain a small medium / high brightness aviation obstruction light. it can.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a reflective light emitting diode according to an embodiment of the present invention.

FIG. 2 is a plan view and a side view of the light emitting diode array.

FIG. 3 is a partial cross-sectional side view of the same aviation obstruction light.

FIG. 4 is a light emission control circuit diagram according to the sequential lighting method.

[Explanation of symbols]

1 Light emitting element 5 Light-transmitting resin 6 concave reflective surface 7 Radiating surface 11 Reflective LED 22 Light emitting diode array 31 Aviation Obstacle Light 32 lamp body 35 Light emitting part 37 Power Supply

Continued front page    (72) Kenji Ikoma, Inventor             3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture             Kansai Electric Power Co., Inc. (72) Inventor Kenichiro Nomura             3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture             Kansai Electric Power Co., Inc. (72) Inventor Hitoshi Furusawa             Stock Market Association, 4-3 Osaki, Shinagawa-ku, Tokyo             Inside Sankosha (72) Inventor Shigeru Yamazaki             5-8-27 Ginza, Kumagaya City, Saitama Prefecture (72) Inventor Miyuki Hatanaka             3-9-10 Midorigaoka, Ogawa Town, Hiki District, Saitama Prefecture (72) Inventor Kei Sato             3808 Minota, Konosu, Saitama Alice A202 F term (reference) 3K080 AA08 AA15 AB01 BA07 CC06

Claims (2)

[Claims] 1. A reflection type having a concave reflecting surface provided facing the light emitting surface of the light emitting element to reflect light emitted from the light emitting element, and a radiation surface for radiating the reflected light to the outside in substantially parallel. A light-emitting part including a light-emitting diode, a support body arranged in a substantially cylindrical lamp body, a plurality of light-emitting diode arrays mounted along the entire circumference of the support body, and a power supply section arranged in the lamp body In the aviation obstruction light, the power supply unit includes a light emission control circuit that sequentially lights a plurality of circuit-independent lighting blocks in a circular array order, and is configured to sequentially emit light emitted from the light emitting unit. Aviation obstacle lights. 2. A reflection type having a concave reflection surface provided facing the light emitting surface side of the light emitting element and reflecting the light emitted from the light emitting element, and a radiation surface for radiating the reflected light to the outside in a substantially parallel manner. A light-emitting part including a light-emitting diode, a support body arranged in a substantially cylindrical lamp body, a plurality of light-emitting diode arrays mounted along the entire circumference of the support body, and a power supply section arranged in the lamp body In the aviation obstruction light, the power supply unit includes a light emission control circuit that alternately lights a plurality of circuit-independent lighting blocks in the order of circular arrangement, and is configured so that light emitted from the light emitting unit is alternately lighted. Aviation obstacle lights.