JP2004124442A - Aircraft beacon light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aircraft beacon light capable of decreasing a light leak from a light source to easily partition an inside space and at the same time, securing the inside space enabling a component to easily attached and detached. <P>SOLUTION: The aircraft beacon light 1 includes an aircraft beacon light body 2 having a lower light body 7 for covering an upper light body 6 equipped with a plurality of light projection windows 10 and the lower part of the upper light body 6, a plurality of light sources 3 arranged to the lower light body 6 so that light can be emitted from the light projection windows 10 and a shading plate 4 located between the light sources 3 to partition the inside space of the aircraft beacon light body 2 and rotatably placed with one side end as a fulcrum when the upper light body 6 and the lower light body 7 are not covered. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aeronautical beacon light having a plurality of light sources for emitting radiation in different directions.
[0002]
2. Description of the Related Art Some aeronautical traffic lights embedded in roads such as runways and taxiways at airports project in two directions. In some of the aeronautical beacon lamps, two light sources can be turned on independently of each other, and are housed in independent partitioned spaces (for example, see Patent Document 1).
[0003]
FIG. 7 shows a partial cross-sectional view of the aerial sign lamp of Patent Document 1, and FIG. 8 shows a bottom view of the upper lamp body. The aerial sign lamp 50 is formed by integrally forming a partition wall portion 52 protruding downward from the upper lamp body 51, and as shown in FIG. 7, a component storage space (internal space) 54 of the lower lamp body 53 is formed. It is partitioned by the partition wall 52. The partition wall portion 52 is not formed for the purpose of preventing light leakage between two light sources (not shown), but as a result, prevents interference due to light leakage between the light sources.
[0004]
[Patent Document 1]
JP-A-2000-314113 (pages 5 to 6, FIGS. 1 and 8)
[0005]
In Patent Document 1, since the partition wall 52 is formed integrally with the upper lamp body 51, the structure of the upper lamp body 51 is complicated as shown in FIG. It has the disadvantage of weight. Further, as shown in FIG. 7, since the corner 52 a of the partition wall 52 is not located at or near the bottom 55 of the lower lamp 53, there is a possibility that light leaks from the light source from the bottom 55. is there.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide an aerial signage lamp capable of reducing light leakage of a light source, easily dividing an internal space, and securing an internal space in which components can be easily attached and detached.
[0007]
According to a first aspect of the present invention, there is provided an aerial sign lamp comprising an upper lamp having a plurality of light emitting windows on an upper surface and a lower lamp covering a lower portion of the upper lamp. A traffic light having a main body; a plurality of light sources disposed in a lower light body so that light can be emitted from a light projecting window; And a light-shielding plate rotatably disposed around one side end as a fulcrum when the body and the lower lamp body are not covered with each other.
[0008]
In the present invention and the following inventions, each configuration is as follows unless otherwise specified.
[0009]
The light source may be any one that emits light, and is not particularly limited, such as a halogen lamp, an incandescent lamp, a fluorescent lamp, an HID lamp, or a light emitting diode. Further, the light source may be provided with a reflecting mirror.
[0010]
“At the time when the upper lamp body and the lower lamp body are not covered” means a state in which the upper lamp body is removed from the lower lamp body.
[0011]
According to the present invention, the light-shielding plate is formed so as to be able to reduce light leakage from each other and to be rotatable around one side end, so that the light-shielding plate does not become an obstacle, Parts can be easily attached and detached.
[0012]
The invention of an aerial beacon light according to claim 2 is an aerial beacon light body having an upper lamp body having a plurality of floodlight windows on an upper surface and a lower lamp body covering a lower part of the upper lamp body; A plurality of light sources disposed on the lower lamp body so that light can be emitted from the window; a light shielding plate disposed between the light sources and disposed to partition the interior space of the aerial sign light; And a holding member for holding.
[0013]
According to the present invention, since the light-shielding plate is held by the holding member, the light-shielding plate can be easily attached and detached. Can be easily performed.
[0014]
According to a third aspect of the present invention, there is provided the aerial signage lamp according to the first or second aspect, wherein a concave groove for inserting an upper edge portion of the light shielding plate is provided on an inner surface of the upper lamp body. Features.
[0015]
The concave groove may be provided in the upper lamp body itself. Further, a member having a concave groove may be provided on the inner surface of the upper lamp body.
[0016]
According to the present invention, since the upper edge of the light-shielding plate is inserted into the groove, light from the light source hardly passes through the groove. , Light leakage from each other light source is prevented.
[0017]
Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described.
[0018]
1 to 4 show a first embodiment of the present invention. FIG. 1 is a partially cut-away schematic sectional view of an aeronautical sign light installed on a base, and FIG. 2 is a plan view of an upper light body. FIG. 3 is a plan view of the lower lamp body with the light shielding plate provided, and FIG. 4 is a plan view of the lower lamp body with the light shielding plate turned.
[0019]
In FIG. 1, an aerial traffic light 1 includes an aerial traffic light main body 2, a light source 3, and a light shielding plate 4. The aerial sign lamp 1 is installed on a base 5 buried in a road surface G.
[0020]
The aerial sign lamp body 2 is composed of an upper lamp body 6 and a lower lamp body 7, and the lower part of the upper lamp body 6 is water-tightly covered with the upper part of the lower lamp body 7 by a waterproof packing (not shown).
[0021]
The upper lamp body 6 is formed in a substantially disk shape, and has a bulging portion 8 and a light guide groove 9 on the upper surface as shown in FIG. The bulging portion 8 is formed on the upper surface of the upper lamp body 6 in the form of a truncated cone having a circular flat top surface in the center and a conical slope extending from the top surface to the periphery of the upper lamp body 6. A pair of the light guide grooves 9 are alternately arranged at point-symmetric positions about the center of the upper lamp body 6. The light guide groove 9 opens at the slope of the truncated cone of the bulging portion 8, and communicates with the internal space of the main body 2 of the aerial sign lamp, and a light projecting window 10 is formed at the communicating portion. That is, the upper lamp body 6 includes the plurality of light emitting windows 10 on the upper surface. The light projecting window 10 has a prism 11 fixed thereto in a watertight manner. A plurality of bolt insertion holes 12 for connecting the upper lamp body 6 and the lower lamp body 7 to form the aerial sign lamp body 2, and a base member 5 on the periphery of the upper lamp body 6. And a plurality of bolt insertion holes 13 for fixing the bolt holes.
[0022]
The lower lamp 7 has a dish shape, and as shown in FIG. 3, a bolt insertion hole 14 and the like facing the bolt insertion hole 12 of the upper lamp are formed in the peripheral portion. Then, as shown in FIG. 1, the upper lamp 6 is covered by a stud bolt (not shown), and forms an internal space in cooperation with the upper lamp 6. Also, a terminal block (not shown) for connecting to the base 5 to obtain power is provided.
[0023]
The lower light body 7 is provided with the light source 3 having two reflectors 16 and connected to a lighting device (not shown) by a lead wire 17.
[0024]
As shown in FIG. 1 or FIG. 3, the lower light body 7 is provided with a light-shielding plate 4 that is located between the light sources 3 and that partitions the internal space of the aeronautical sign light body 2. The light-shielding plate 4 is made of a substantially rectangular metal thin plate, and is partially notched in order to avoid a stepped portion of the lower lamp 7, a protrusion such as a screw, or an interference portion of the upper lamp 6. ing. An insertion hole is provided at one side end of the light shielding plate 4, and the shaft rod 18 is inserted through the insertion hole. Then, both ends of the shaft rod 18 are fixed to the inner wall on the side of the lower lamp body 7 by screws, an adhesive, or welding. As a result, the light shielding plate 4 is integrated with the lower lamp body 7 via the shaft rod 18 and can rotate around one side end as a fulcrum. That is, when the upper lamp body 6 and the lower lamp body 7 are not covered with each other, the other side end of the light shielding plate 4 can be lifted to the upper side of the lower lamp body 7, and the light shielding plate can be removed from the internal space of the lower lamp body 7. 4 is removed and the compartment of the internal space disappears. Then, the other side end of the light shielding plate 4 is held by a holding member 19 provided on the lower lamp body 7 as shown in FIG. Thereby, the light shielding plate 4 is fixed to the lower light body 7.
[0025]
Further, as shown in FIG. 1, a light shielding member 21 provided with a concave groove 20 along the longitudinal direction of the light shielding plate 4 is attached to the inner surface of the upper lamp body 6. The concave groove 20 is formed in a substantially longitudinal dimension of the light shielding plate 4 and inserts an upper edge portion of the light shielding plate 4. At this time, the larger the depth of the concave groove 20 is, the better it is, and the smaller the width is, the better. However, when the upper lamp body 6 is covered with the lower lamp body 7, an appropriate The dimensions are set in advance.
[0026]
The base 5 on which the aeronautical traffic light 1 is installed has a bottomed cylindrical shape whose upper part is open, and is buried in the road surface G. The aerial sign lamp 1 is required to be thin, and is formed so that the depth from the road surface G is 40 mm.
[0027]
Next, the operation of the first embodiment of the present invention will be described.
[0028]
Of the light emitted from the light source 3, the light incident on the light projecting window 10 of the upper lamp body 6 is emitted from the light projecting window 10 to the outside of the aircraft sign light main body 2. However, the leakage light that has not entered the light projecting window 10 is reflected by components disposed in the inner surface of the upper lamp 6, the inner surface of the lower lamp 7, and the internal space of the flight sign light main body 2. Then, of the leaked light, light directed to the other light emitting window 10 is generated.
[0029]
The light emitted from the light emitting window 10 is easy to see if it is the light from the light source 3 disposed opposite to the light emitting window 10, but the light leaked from the other light source 3 is emitted. In this case, the leaked light is likely to be scattered light, which impairs visual recognition. However, since the light shielding plate 4 is provided between the light sources 3 so as to partition the internal space of the aircraft sign light body 2, the light shielding plate 4 suppresses light leakage from the light sources 3 to each other.
[0030]
In particular, a light blocking member 21 having a concave groove 20 is provided on the inner surface of the upper lamp body 6. As shown in FIG. 1, the light source 3 is mainly located in the internal space of the upper lamp 6 and is close to the inner surface of the upper lamp 6. Thereby, even if the light shielding plate 4 is located between the light sources 3, if the light shielding member 21 is not provided on the inner surface of the upper lamp 6, the distance between the light source 3 and the inner surface of the upper lamp 6 is short. Therefore, light leaks easily from a gap between the inner surface of the upper lamp body 6 and the upper edge of the light shielding plate 4. However, if the light shielding member 21 is provided on the inner surface of the upper lamp body 6, even if there is a gap between the upper edge of the upper lamp body 6 and the inner wall of the concave groove 20, the light from the light source 3 will be in the concave groove 20. And the light that enters the concave groove 20 has an optical path of 180 ° in the concave groove 20, so that the light does not easily leak to the other light source 3 side. That is, the light shielding member 21 having the concave groove 20 prevents light leaking from the light source 3 on the inner surface side of the upper lamp body 6.
[0031]
Although a gap is formed between the lower edge of the light shielding plate 4 and the bottom of the lower lamp 7, the distance between the light source 3 and the bottom of the lower lamp 7 is large, and Since the components such as the support legs of the socket 15 and the lead wires 17 are provided, light leaked from the gap is small. In addition, the light leaked from the gap is hard to reach the light emitting window 10 because the light emitting window 10 is located far away from the gap.
[0032]
Further, since the light shielding plate 4 is rotatably disposed with one side end as a fulcrum, when the upper lamp body 6 and the lower lamp body 7 are not covered with each other, that is, when the upper lamp body 7 and the upper lamp body 7 are uncovered. 4, the light shielding plate 4 is removed from the internal space of the lower lamp body 7 by lifting the other side end upward, as shown in FIG. As a result, there is no partition in the internal space of the lower light body 7, and the light-shielding plate 4 does not become an obstacle, so that the light source 3 and other components can be easily attached and replaced. Further, one side end of the light shielding plate 4 is integrally attached to a shaft rod 18 fixed to the inner side wall of the lower lamp body 7, so that when the upper lamp body 6 and the lower lamp body 7 are covered with each other. In addition, the necessity of disposing the light shielding plate 4 on the lower light body 7 is prevented. Further, since the light shielding plate 4 has a simple structure made of a thin plate, the body 2 of the aeronautical indicator light is reduced in weight and can be manufactured at low cost.
[0033]
Next, a second embodiment of the present invention will be described.
[0034]
5 and 6 show a second embodiment of the present invention. FIG. 5 is a plan view of a lower lamp body of an aeronautical sign lamp, and FIG. 6 is a plan view of the lower lamp body in a state where a light shielding plate is provided. It is. The same parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof is omitted.
[0035]
The lower lamp body 23 shown in FIG. 5 has a lower groove 24 as a holding member provided in a lower step 24 and an upper step 25 on the bottom surface side. The width (gap) of the concave groove 26 is slightly larger than the thickness of the light shielding plate 27, and the depth is appropriately set so that the light shielding plate 27 can be held. The light-shielding plate 27 is formed in the same shape as the light-shielding plate 4 shown in FIGS. 3 and 4, and does not have an insertion hole at one side end.
[0036]
As shown in FIG. 6, the lower edge of the light shielding plate 27 is inserted into the concave groove 26 to hold the light shielding plate 27. As a result, the light shielding plate 27 partitions the internal space of the aircraft sign light body 2 and suppresses light leakage from the light sources 3.
[0037]
Further, since the light shielding plate 27 is inserted and held in the concave groove 26, the light shielding plate 27 is easily removed by lifting the lower lamp body 7 upward from the bottom side. This eliminates the division of the internal space of the lower lamp body 7 and the light-shielding plate 27 does not become an obstacle, so that components such as the light source 3 can be easily attached and detached.
[0038]
According to the first aspect of the present invention, the light shielding plate is formed so as to be able to reduce the leakage light from each light source and to be rotatable around one side end as a fulcrum. Does not become an obstacle, and components such as a light source can be easily attached and detached.
[0039]
According to the second aspect of the present invention, the light-shielding plate is held by the holding member, so that the light-shielding plate can be easily attached and detached. Parts can be easily attached and detached.
[0040]
According to the third aspect of the present invention, since the upper edge of the light shielding plate is inserted into the groove, light from the light source hardly passes through the groove. Light leakage from the light sources on the inner surface side of each other can be prevented.
[Brief description of the drawings]
FIG. 1 is a partially cut-away schematic cross-sectional view of an aeronautical sign lamp installed on a base according to a first embodiment of the present invention.
FIG. 2 is a plan view of the upper lamp body.
FIG. 3 is a plan view of the lower lamp body in a state where a light shielding plate is provided.
FIG. 4 is a plan view of the lower lamp body in a state where the light shielding plate is rotated.
FIG. 5 is a plan view of a lower light body of an aeronautical sign light showing a second embodiment of the present invention.
FIG. 6 is a plan view of the lower lamp in a state where a light shielding plate is provided.
FIG. 7 is a partial cross-sectional view of the aeronautical sign light of Patent Document 1.
FIG. 8 is a bottom view of the upper lamp.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Air traffic sign light, 2 ... Air traffic sign light body, 3 ... Light source, 4, 27 ... Light shielding plate, 20 ... Groove, 26 ... Groove as a holding member

Claims (3)

An aerial traffic light body having an upper lamp body having a plurality of floodlight windows on an upper surface and a lower lamp body covering a lower part of the upper lamp body;
A plurality of light sources arranged in the lower lamp body so that light can be emitted from the light emitting window;
A light-shielding plate positioned between the light sources to partition an internal space of the body of the aerial sign lamp, and rotatably disposed around one side end as a fulcrum when the upper lamp and the lower lamp are not covered;
An air traffic sign light comprising: An aerial traffic light body having an upper lamp body having a plurality of floodlight windows on an upper surface and a lower lamp body covering a lower part of the upper lamp body;
A plurality of light sources arranged on the lower lamp body so that light can be emitted from the light emitting window;
A light-shielding plate disposed between the light sources and arranged to partition the internal space of the traffic light;
A holding member for holding the light shielding plate;
An air traffic sign light comprising: The aerial sign lamp according to claim 1, wherein a concave groove for inserting an upper edge portion of the light shielding plate is provided on an inner surface of the upper lamp body.

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