JP2000285702A - Airplane warning light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by decreasing the number of part items, facilitate manufacture, facilitate handling by reducing weight and reduce the maintenance and control cost by decreasing power consumption. SOLUTION: A first group of LEDs 1 are mounted on the lower face of an upper substrate 2 to emit light downward respectively, and a second group of LEDs 1 are mounted on the upper face of a lower substrate 3 arranged below the upper substrate 2 at an interval to emit light upward respectively. A reflection light distribution controller 5 is provided between the upper substrate 2 and the lower substrate 3. The reflection light distribution controller 5 reflects at least most of the light emitted from the first group of LEDs 1 of the upper substrate 2 and at least most of the light emitted from the second group of LEDs 1 of the lower substrate 3, and controls the vertical light distribution of the light emitted from the first group and second group of LEDs 1 and sent to the outside via a globe 4 as desired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aviation obstacle light, and more particularly to an aviation obstacle light having a large number of light emitting elements as light sources.

[0002]

2. Description of the Related Art Aviation obstruction lights are lights installed on buildings such as high-rise buildings, power transmission towers, and large chimneys to notify aircraft of the existence of obstacles. The aviation obstruction light is configured to emit a main beam having a predetermined luminous intensity (for example, 30 cd) or more in a direction above a horizontal by a predetermined angle (for example, 7.5 °).

Conventionally, for example, Japanese Utility Model Laid-Open No. 4-102113
As disclosed in Japanese Unexamined Patent Application Publication No. H11-264, an aviation obstruction light including a large number of LEDs arranged along a cylindrical surface and a globe provided to cover the large number of LEDs is known. .

In such an aircraft obstruction light, an extremely large number of LEDs are used in order to secure a sufficient luminance, and each LE
D is disposed so as to extend from the horizontal in the direction above the predetermined angle, and the light emitted from the LED passes through the glove as it is and is emitted to the outside.

[0005]

However, in the conventional aviation obstruction light, the entire light emitted from each LED is
It has not been effectively used to form the light intensity distribution required for aviation obstruction lights, and a significant portion of the light emitted from each LED is either unnecessary or does not require much luminosity as aviation obstruction lights It was also released in an upward or downward direction.

[0006] For this reason, in the conventional aviation obstacle lights, LED
Unless the number is extremely large, the light intensity distribution required for an aviation obstacle light cannot be obtained. Since the number of LEDs is very large, the number of parts increases, and the production is troublesome and expensive. When many LEDs are used, it is necessary to efficiently radiate the heat generated from the LEDs to the outside in order to extend the life of the LEDs. However, since the number of LEDs is large and the amount of heat generated is large, the heat radiation structure The weight of the aviation obstruction light is increased due to the increase in the weight of the aviation obstacle light and the number of parts. Furthermore, since the number of LEDs is very large, power consumption is large, and maintenance costs such as electricity costs are large,
It was uneconomic.

In the conventional aviation obstruction light, since a large number of LEDs are arranged along the cylindrical surface, one row or one line is formed on a large number of strip-shaped substrates extending long in the axial direction of the cylindrical surface. A plurality of rows of LEDs are mounted, and these band-shaped substrates are juxtaposed over the circumference of the cylindrical surface. Since a large number of substrates are used in this way, the number of components is increased from this point, and the wiring is complicated, which requires a lot of trouble in manufacturing and is expensive.

Further, in the conventional aviation obstruction light, since a large number of LEDs are arranged along the cylindrical surface and a large number of LEDs are covered by the globe, the heat generated from the LEDs can be efficiently radiated to the outside. Was difficult.

The present invention has been made in view of such circumstances, and has a small number of parts, is easy to manufacture, and is inexpensive.
It is an object of the present invention to provide an aviation obstruction light that can be reduced in weight and is easy to handle, consumes less power, and reduces maintenance costs.

[0010]

According to a first aspect of the present invention, there is provided an aviation obstacle light including a plurality of light emitting elements, wherein the aviation obstacle light includes a plurality of light emitting elements. An upper substrate on which the first group of light emitting elements are respectively mounted so as to emit light downward, and a lower substrate disposed at a distance from the upper substrate at a lower distance,
The light emitting device further includes a lower substrate on which the remaining second group of light emitting elements of the multiple light emitting elements emit light upward, a globe, and a reflection light distribution control unit. The reflection light distribution control unit is provided between the upper substrate and the lower substrate, and is at least most of light emitted from the first group of light emitting elements and emitted from the second group of light emitting elements. At least most of the light is reflected, and the vertical light distribution of light emitted from the first and second groups of light emitting elements and emitted to the outside through the globe is controlled to a desired light distribution. Things.

According to the first aspect, at least most of the light emitted from the many light emitting elements is not directly emitted to the outside through the globe, but is reflected by the reflection light distribution control unit. After that, the light is emitted outside through the glove. Therefore, the light distribution control unit can adjust the light distribution of the light emitted from the many light emitting elements in accordance with the light intensity distribution required for the aviation obstacle lamp. Therefore, as compared with the related art, light emitted from each light emitting element can be used more effectively to form a light intensity distribution required for an aircraft obstacle light. As a result, a light intensity distribution required for an aircraft obstacle light can be obtained with a smaller number of light emitting elements than in the related art, and the number of light emitting elements can be significantly reduced.

As described above, according to the first aspect, the number of light-emitting elements can be greatly reduced, so that the number of components is reduced, the manufacture is facilitated, and the cost is reduced. Further, since the number of light emitting elements is reduced and the amount of heat generated is reduced, the weight of the heat radiating structure can be reduced. It is easy to handle such as when installing to the. Further, since the number of light emitting elements is reduced, power consumption is reduced, and maintenance costs such as electricity bills are reduced, which is economical.

According to the first aspect, since a large number of light emitting elements are divided into two groups and mounted on the upper substrate and the lower substrate, respectively, the number of substrates on which the light emitting elements are mounted is reduced to two. In addition, the upper substrate and the lower substrate can be configured as flat plates. As described above, the number of substrates can be significantly reduced as compared with the conventional case. Therefore, the number of components can be reduced, wiring can be simplified, manufacturing can be facilitated, and cost can be reduced.

Further, according to the first aspect, since a large number of light-emitting elements are not disposed near the globe but are disposed at the upper and lower parts, heat generated from the light-emitting elements is reduced. Heat can be efficiently radiated to the outside.

An aviation obstruction light according to a second aspect of the present invention comprises:
In the aviation obstruction light according to the first aspect, the reflection light distribution control unit controls the light distribution such that the luminous intensity in a direction approximately 7.5 ° upward with respect to the horizontal direction is the largest. is there.

It is preferable that the reflection light distribution control unit controls the light distribution as in the second mode, since the light distribution becomes easy to be visually recognized from the aircraft.

An aviation obstruction light according to a third aspect of the present invention comprises:
In the aviation obstruction light according to the first or second aspect, at least a part of the light emitted from the light emitting elements of the second group of light emitting elements mounted near the outer periphery of the lower substrate is the reflected light distribution. The light is emitted outside without being reflected by the control unit.

As in the third aspect, at least a part of the light emitted from the light emitting element mounted near the outer periphery of the lower substrate is emitted outside without being reflected by the reflection light distribution control unit. By doing so, a desired luminous intensity can be ensured even in an upper portion forming a relatively large angle with respect to the horizontal direction, which is preferable.

An aviation obstruction light according to a fourth aspect of the present invention comprises:
The aviation obstruction light according to any one of the first to third aspects, further comprising: an upper radiator for radiating heat of the upper substrate to the outside; and a lower radiator for radiating heat of the lower substrate to the outside. It is.

By providing the upper heat radiating portion and the lower heat radiating portion as in the fourth aspect, the heat generated from the light emitting element can be more efficiently radiated to the outside, and the life of the light emitting element can be further extended. it can.

An aviation obstruction light according to a fifth aspect of the present invention comprises:
In the aviation obstruction light according to any one of the first to fourth aspects, (1) a current limiting resistor that limits a current flowing through the first group of light emitting elements is an upper space with respect to the upper substrate, (2) the second group is disposed in a space that is substantially thermally separated from a space in which the first and second groups of light emitting elements and the reflection light distribution control unit are disposed; A current limiting resistor that limits the current flowing through the light emitting element of
A space below the lower substrate and substantially thermally separated from a space in which the first and second groups of light emitting elements and the reflective light distribution control unit are disposed; It is arranged in.

According to the fifth aspect, the first group and the second group
The first space and the lower space are each substantially thermally separated from the space in which the light emitting elements of the group are disposed.
Since the current limiting resistor for the light emitting element of the group and the current limiting resistor for the light emitting element of the second group are provided, the atmosphere of the light emitting element is heated by heat generated from the current limiting resistor. And the heat generated from the current limiting resistor is hardly conducted to the light emitting element. Therefore, the temperature of the light emitting element can be further suppressed, and the life of the light emitting element can be further extended.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an aircraft obstruction light according to an embodiment of the present invention will be described with reference to FIG. FIG.
1 is a partially cutaway schematic front view showing an aviation obstacle light according to the present embodiment.

The aviation obstruction light according to the present embodiment includes an LED 1 as a number of light emitting elements, an upper substrate 2, a lower substrate 3 provided at a distance below the upper substrate 2, a globe 4, A reflection light distribution control unit 5 provided between the upper substrate 2 and the lower substrate 3 is provided.

As the upper substrate 2 and the lower substrate 3, a disk-shaped substrate having thermal conductivity such as an aluminum substrate is used. On the lower surface of the upper substrate 2, a first group of LEDs 1 of the large number of LEDs 1 is mounted so as to emit light downward. On the upper surface of the lower substrate 3, the remaining second group of LEDs 1 of the large number of LEDs 1 are mounted so as to emit light upward.

The upper substrate 2 is made of a metal material (thermally conductive material) and has a lower surface (a disk portion 8 described later) of an upper substrate
The lower substrate 3 is mounted on an upper surface (an upper surface of a disk portion 10 described later) of a lower substrate support member 7 made of a metal material (thermally conductive material). The upper substrate support member 6 includes a lower disk portion 8 and a cylindrical portion 9 integrally projecting upward from the disk portion 8. On the outer periphery of the cylindrical portion 9, a male screw portion 9a into which a nut 13 described later is screwed is formed. The lower substrate support member 7 includes a disk portion 10 and a radiation fin 11 formed to protrude downward from an outer peripheral portion of the disk portion 10. The radiating fins 11 are provided intermittently in the circumferential direction and are provided in two rows at intervals in the radial direction, but are not limited to such a configuration. In the present embodiment, the lower substrate supporting member 7 constitutes a lower heat radiating portion that radiates heat of the lower substrate 3 to the outside.

Screw holes are formed in the centers of the disk portions 8 and 10 of the support members 6 and 7, respectively, and male screw portions formed at both ends of the pipe-like column 12 are screwed into these screw holes. Thus, the support members 6 and 7 are integrally connected via the support 12. The support 12 is made of a metal material from the viewpoint of strength, but may be made of a material having no thermal conductivity. It is to be noted that the substrates 2 and 3 include
Is formed through the hole. In the vicinity of both ends of the column 12, communication holes 12a and 12
b is formed.

The reflection light distribution control unit 5 is fixed to the support 12 while being inserted through the support 12. Reflection light distribution control unit 5
Is a first group of LEDs 1 on the upper substrate 2 as shown in FIG.
And at least most of the light emitted from the second group of LEDs 1 of the lower substrate 3 is reflected by the first and second groups of LEDs 1 via the globe 4. The vertical light distribution of the light emitted to the outside is controlled to a desired light distribution. In the present embodiment, the reflection light distribution control unit 5 is a rotating body around the support 12, and the entire surface is a reflection surface. The reflection light distribution control unit 5 is, for example, performing surface polishing on a solid body of aluminum, performing surface polishing by molding using a sheet metal, or depositing aluminum or the like on the surface of a resin member, Can be manufactured.

In the present embodiment, the reflection light distribution control unit 5
It is designed so that the luminous intensity in a direction approximately 7.5 ° above the horizontal direction is the highest. As shown in FIG. 1, a part of the light emitted from the LEDs 1 mounted near the outer periphery of the lower substrate 3 of the second group of LEDs 1 mounted on the lower substrate 3 is reflected by the reflection light distribution controller 5. The size of the reflection light distribution control unit 5, the size of the lower substrate 3, and the arrangement of the LEDs 1 are determined so that the light is emitted to the outside without being reflected by the LED. However, in the present invention, it is not always necessary to set in this way.

The globe 4 is made of, for example, a resin-made red transparent member, and is formed on a cylindrical portion which is slightly tapered upward (not necessarily tapered) and a lower end portion of the cylindrical portion. A flange portion and an upper horizontal portion directed inward from the upper end of the cylindrical portion. An insertion hole through which the cylindrical portion 9 of the upper substrate supporting member 6 is inserted is formed in the upper horizontal portion, and the upper horizontal portion is engaged with the outer peripheral portion of the disk portion 8 of the upper substrate supporting member 6. The upper horizontal part of the globe 4 is provided with a nut 1
By being screwed into the nut 3, the nut 3 is held between the nut 13 and the outer peripheral portion of the disk portion 8. In addition, the glove 4 is pressed downward by the nut 13,
The flange at the lower end of the globe 4 is the lower substrate support member 7.
Is pressed against the outer periphery. The O-ring 14 keeps the space between the upper horizontal portion of the globe 4 and the disk portion 8 watertight. The flange portion at the lower end of the globe 4 may be fixed to the outer peripheral portion by a ring-shaped pressing plate screwed to the outer peripheral portion of the lower substrate support member 7 through the flange portion. The gap between the flange at the lower end of the globe 4 and the outer peripheral portion of the lower substrate support member 7 is O
It is kept watertight by a ring 15. This glove 4
Thereby, the mounting space A for the first group and the second group of LEDs 1 and the reflection light distribution control unit 5 is defined from the outside.

The cylindrical portion 9 of the upper substrate supporting member 6 has a cup which closes the internal space B of the cylindrical portion 9 and has a lower opening made of a metal material (thermally conductive material) which covers the cylindrical portion 9 and the nut 13. A cover member 16 is fixed by screws 17. Between the cylindrical portion 9 and the cover member 16,
A ring-shaped packing 18 for keeping the internal space B of the cylindrical portion 9 watertight is provided. In the present embodiment, the cover member 16 and the upper substrate supporting member 6 constitute an upper heat radiating portion that radiates heat of the upper substrate 2 to the outside.

A support 19 for supporting the lower substrate supporting member 7 is provided below the lower substrate supporting member 7. The support body 19 is integrally formed of a metal material (thermally conductive material), and has a cup-shaped upper support body 20 that is opened upward.
It has a rectangular column-shaped lower support 21 having a space C open to the outside on the near side of the paper in FIG. Space C
Is closed in a watertight manner by a closing plate 23 fixed by screws 22 and a packing (not shown). The upper flange portion of the upper support 20 and the disk portion 10 of the lower substrate support member 7 are fixed by screws (not shown). The space between them is kept watertight by a ring-shaped packing 24.

A flange 25 is provided below the lower support 21.
Is formed, and a bolt insertion hole 26 is formed in the flange portion 25, so that it can be fixed to a pedestal or the like at a location where the aviation obstruction light is attached. The space D and the space C inside the cup-shaped upper support 20 opened upward are communicated with each other through a communication hole 27. The space C communicates with the outside through the lower surface of the lower support 21 via the communication hole 28.

As can be understood from the above description, the space B
Are the first group and second group of LEDs 1 and the reflection light distribution control unit 5
Is an upper space with respect to the space A in which
The space A is a space substantially thermally separated from the space A. Since the upper substrate supporting member 6 made of a heat conductive material is interposed between the space A and the space B, the upper substrate supporting member 6 acts as a heat shield, so that the space A and the space B are thermally connected. In effect. The space D is a space below the space A in which the first group and the second group of the LEDs 1 and the reflection light distribution control unit 5 are provided, and is substantially thermally thermally connected to the space A. The space is separated into Since the lower substrate supporting member 7 made of a heat conductive material is interposed between the space A and the space D,
The space A and the space D are thermally substantially separated by the lower substrate supporting member 7 acting as a heat shield.

In the space D, a current limiting resistor 30 for limiting the current of the second group of LEDs 1 mounted on the lower substrate supporting member 7 and a power supply circuit board on which a power supply circuit (parts of which are not shown) are mounted. 31 are provided. Further, in the internal space B of the cylindrical portion 9 of the upper substrate support member 6, the upper substrate 2
Is provided with a substrate 33 on which a current limiting resistor 32 for limiting the current of the first group of LEDs 1 mounted thereon is mounted. In the space C, a terminal block 34 is provided.

Although not shown in the drawing, a power supply line is externally inserted into the communication hole 28 and connected to the terminal block 34. The terminal block 34 and the power supply circuit board 31 are connected by electric wires. The power supply circuit board 31 and the lower board 3 are connected by an electric wire via the lower end of the column 12 and the communication hole 12b. The lower end of the column 12, the inside of the column 12, and the communication hole 12a are provided between the power supply circuit board 31 and the upper substrate 2.
Are connected by electric wires. The power supply circuit board 31 and the board 33 are connected by wires passing through the lower end of the column 12, the inside of the column 12, and the upper end. The board 33 and the upper board 2 are connected by an electric wire via the upper end of the column 12 and the communication hole 12a. By these connections, a predetermined electric circuit is formed, and when a predetermined current flows through the first and second groups of LEDs 1, the LEDs 1 are turned on.

According to the aviation obstruction light according to the present embodiment configured as described above, at least most of the light emitted from the first and second groups of LEDs 1 is directly transmitted to the outside via the globe 4. Instead, the light is reflected by the reflection light distribution control unit 5 and then emitted to the outside via the globe 4. Therefore, the light distribution control unit 5 controls the LE.
The light distribution of the light emitted from D1 can be adjusted according to the light intensity distribution required for the aviation obstacle light. For this reason, the light emitted from each LED 1 can be used effectively to form the light intensity distribution required for the aviation obstruction light, as compared with the related art. As a result, a light intensity distribution required for an aviation obstacle light can be obtained with fewer LEDs 1 than in the related art, and the number of LEDs 1 can be significantly reduced.

As described above, according to the present embodiment, LE
Since the number of D1s can be greatly reduced, the number of parts is reduced, manufacturing is easy, and the cost is low.

By the way, the heat generated from the first group of LEDs 1 mounted on the upper substrate 2 is radiated to the outside from the upper substrate supporting member 6 and the cover member 16 constituting the upper heat radiating portion.
Heat generated from the second group of LEDs 1 mounted on the lower substrate 3 is radiated to the outside from the radiating fins 11 through the disk portion 10 of the lower substrate supporting member 7 constituting the lower radiating portion. Therefore, the heat generated from the LED 1 is efficiently radiated, and the number of the LEDs 1 is reduced as described above to reduce the amount of heat generated. Therefore, the thickness of the support members 6 and 7 constituting the heat radiating structure is reduced. The weight can be reduced, and the number of parts is reduced, so that the weight of the entire aviation obstruction light is reduced, which facilitates handling when installed at a high place.

Furthermore, since the number of LEDs 1 is reduced, power consumption is reduced, and maintenance costs such as electricity bills are reduced, which is economical.

According to the present embodiment, a large number of LEs
D1 is divided into two groups and mounted on the upper substrate 2 and the lower substrate 3, respectively.
The number of 3 can be two, and the upper substrate 2 and the lower substrate 3 can be configured as flat plates. As described above, the number of the substrates 2 and 3 can be significantly reduced as compared with the conventional case. In this regard, the number of components is reduced, the wiring is simplified, the manufacturing is facilitated, and the cost can be reduced. it can.

Further, in the present embodiment, a part of the light emitted from the LED 1 mounted near the outer periphery of the lower substrate 3 of the second group of LEDs 1 mounted on the lower substrate 3 is reflected and distributed. Since the light is emitted to the outside without being reflected by the portion 5, a desired luminous intensity can be ensured even in an upward direction at a relatively large angle with respect to the horizontal direction.

Further, according to the present embodiment, the first
An upper space B and a lower space D that are thermally substantially separated from the space A in which the group 1 and the second group of LEDs 1 are disposed.
Respectively, a current limiting resistor 32 for the first group of LEDs 1
Also, since the current limiting resistors 30 for the LED 1 of the second group are provided, the atmosphere of the LED 1 is not heated by the heat generated from the current limiting resistors 32, 30, and the current limiting resistor 32 , 30 is LED
1 is hardly conducted. Therefore, LED1
Is further suppressed, and the life of the LED 1 can be further extended.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. For example, in the present invention, another light emitting element may be used instead of the LED 4.

[0045]

As described above, according to the present invention,
The number of parts is small, the manufacturing is easy and inexpensive, the weight can be reduced, the handling is easy, and the power consumption is low and the maintenance cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway schematic front view showing an aviation obstacle light according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 LED 2 upper substrate 3 lower substrate 4 globe 5 reflection / light distribution controller 6 upper substrate support member 7 lower substrate support member 12 support 30, 32 current limiting resistor

Claims (5)

[Claims] 1. An aviation obstruction light including a plurality of light emitting elements, wherein: an upper substrate on which a first group of light emitting elements of the plurality of light emitting elements are respectively mounted so as to emit light downward; A lower substrate disposed at a distance below the upper substrate, the lower substrate being mounted such that the remaining second group of light emitting elements of the plurality of light emitting elements respectively emit light upward. A substrate, a globe, and at least a majority of light emitted from the first group of light emitting elements and light emitted from the second group of light emitting elements, provided between the upper substrate and the lower substrate. A reflection distribution that reflects at least a large part of light emitted from the first and second groups of light emitting elements and controls the vertical distribution of light emitted to the outside through the globe to a desired light distribution. And a light control unit. Aviation obstacle lights. 2. The light distribution control unit according to claim 1, wherein the reflection light distribution control unit controls the light distribution such that the luminous intensity in a direction approximately 7.5 ° above the horizontal direction is maximized. The aviation obstruction light described. 3. A light-emitting element of the second group of light-emitting elements mounted near an outer periphery of the lower substrate without being reflected by the reflection light distribution control unit. The aviation obstacle light according to claim 1 or 2, which is emitted to the outside. 4. The apparatus according to claim 1, further comprising: an upper heat radiator for radiating heat of the upper substrate to the outside; and a lower heat radiator for radiating heat of the lower substrate to the outside. Aviation obstruction light as described in. 5. A current limiting resistor for limiting a current flowing to the first group of light emitting elements is an upper space with respect to the upper substrate, wherein the first and second groups of light emitting elements and the reflection wiring are provided. A current limiting resistor provided in a space substantially thermally separated from a space in which the light control unit is provided, and configured to limit a current flowing through the second group of light emitting elements; The space below
The light emitting device of the first and second groups and the reflection light distribution control unit are disposed in a space that is thermally substantially separated from the space in which the reflection light distribution control unit is disposed. 1 to 4
An aviation obstruction light according to any of the above.