Airplane warning light

Abstract

To provide an airplane warning light that can prevent water caused by condensation from accumulating in an inner part.SOLUTION: An airplane warning light 10 comprises a light source 59, a globe 13, and a case 11. The globe 13 contains the light source 59. In the case 11, the light source 59 is arranged on an upper side, the globe 13 is attached via packing 67, and a drain hole 46 for establishing communication between an inner part and an outer part is comprised on a lower side.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] FIELD OF THE INVENTION An embodiment of the present invention relates to an aviation obstruction light. [Background technology]

[0002] Conventionally, aviation obstruction lights installed outdoors at high altitudes have a completely sealed structure to prevent rainwater from getting in. With such aviation obstruction lights, there is a risk that moisture will get inside the housing over time, causing condensation and resulting in water accumulation inside the housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-204433 Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the present invention is to provide an aviation obstruction light that can prevent water from condensing inside the housing. [Means for solving the problem]

[0005] The present invention relates to an aircraft obstruction light, and is provided with a light source, a globe, and a housing. The globe contains the light source. The housing has the light source disposed on an upper side and the globe attached via a packing, and a drain hole on a lower side that connects the inside and outside of the housing. [Effects of the Invention]

[0006] According to the aviation obstruction light of the embodiment, it is expected that water accumulation due to condensation inside the housing can be prevented. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of an aviation obstruction light showing one embodiment. [Figure 2] FIG. 2 is a perspective view of the same aviation obstruction light with the wiring cover removed. [Figure 3] FIG. 2 is a cross-sectional view of the same aviation obstruction light. [Figure 4] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment will be described below with reference to the drawings.

[0009] To ensure the safety of aircraft navigation, aviation obstruction lights are installed on structures at a height of 60m or more above ground or water surface. There are two types of aviation obstruction lights: low-altitude obstruction lights that emit a constant light, and medium-altitude obstruction lights that emit a bright, dimming light.

[0010] As shown in Figures 1 to 4, the aviation obstacle light 10 comprises a housing 11, a light source unit 12 installed on the upper side of the housing 11, a globe 13 that contains the light source unit 12 and is attached to the upper side of the housing 11, and a circuit unit 14 and terminal block 15 for turning on the light source that are arranged within the housing 11.

[0011] The housing 11 comprises an upper housing 20 made of metal and a lower housing 21 made of metal, and is configured by combining the upper housing 20 and the lower housing 21 vertically. The housing 11 is installed in a predetermined installation location in a building using the lower housing 21.

[0012] The upper housing 20 has a cylindrical tube portion 23 that is open on the upper surface side, and a connecting flange portion 24 that protrudes from the periphery of the lower side of the tube portion 23.

[0013] The interior of the upper housing 20 is provided with a first housing section 25, which is a cylindrical upper housing housing section that is open at the top. An inner wall surface 26 that slopes downward so that the diameter decreases, is provided on the inner circumferential surface of the first housing section 25, and a partition section 27, which is an upper-side partition section, is provided on the bottom surface of the first housing section 25 between the first housing section 25 and the lower housing 21. A circular communication hole 28, for example, is provided in the center of the partition section 27. The upper surface of this partition section 27 may be provided as an inclined surface that slopes downward toward the central communication hole 28. A male thread section 29, which is a threaded portion onto which the globe 13 is screwed, is provided on the outer periphery on the upper side of the cylindrical section 23, and an attachment step 30, on the inside of which the light source section 12 is attached, is provided.

[0014] The lower housing 21 includes an upper body portion 32 and a lower body portion 33 each having a generally rectangular cylindrical shape, a connecting flange portion 34 protruding from the periphery on the upper side of the upper body portion 32, and an installation flange portion 35 protruding from the periphery on the lower side of the lower body portion 33. The installation flange portion 35 is provided with a plurality of installation holes 36 for installation at an installation location with bolts or the like.

[0015] The upper body 32 and the lower body 33 are each a substantially rectangular cylindrical shape, with the outer shape of the side periphery of the upper body 32 being larger than that of the lower body 33. A substantially rectangular cylindrical second housing section 37 and a third housing section 38 serving as a lower housing section are provided inside each of the upper body 32 and the lower body 33, and a partition section 39 serving as a lower partition section is provided between these upper and lower housing sections 37, 38. A circular communication hole 40, for example, is provided in the center of the partition section 39. The upper surface of the partition section 39 may be an inclined surface that slopes downward toward the central communication hole 40.

[0016] An opening 41 through which the third housing section 38 opens is provided on one side of the lower body section 33, and a metal wiring cover 42 that closes the opening 41 is detachably attached via a packing 42a. The third housing section 38 widens toward the opening 41, and at least the bottom surface of the third housing section 38 is formed as an inclined surface that slopes downward toward the opening 41.

[0017] A lead-in hole 43 that communicates with the underside of the lower housing 21 is formed in the center of the bottom surface of the third housing section 38 of the lower housing 21. A power line 44 that supplies external power is led into the housing 11 through a packing 45 that is fitted into the lead-in hole 43.

[0018] A drain hole 46 that communicates with the underside of the lower housing 21 is formed in the bottom surface of the third housing section 38 of the lower housing 21. The drain hole 46 is located in a different position from the central inlet hole 43, and is located near the opening 41 of the lower housing 21, at a position below the downward slope on the bottom surface of the third housing section 38 toward the opening 41. A filter 47 is arranged on the upper surface side of the drain hole 46, which allows water to pass from inside the third housing section 38 to the drain hole 46 and prevents foreign objects such as insects from entering from the outside.

[0019] On the underside of the lower housing 21, a peripheral edge 48 protrudes downward from the periphery of the installation flange 35, a hole edge 49 protrudes downward from the periphery of the lead-in hole 43, a hole edge 50 protrudes downward from the periphery of each installation hole 36, and a rib 51 protrudes downward from between the hole edge 49 of the lead-in hole 43 and the hole edge 50 of each installation hole 36. The undersides of the peripheral edge 48, the hole edge 49, 50 and the rib 51 are flush with each other and form an installation surface on which the aviation obstruction light 10 is installed on the installation surface at its installation location.

[0020] A plurality of spaces 52 are defined on the underside of lower housing 21 by rib portion 51. A communication groove 53 that connects adjacent spaces 52 is provided in part of the underside of rib portion 51, and a drain groove 54 that connects to one of spaces 52 is formed in part of the underside of peripheral edge portion 48. A recess 55 that is recessed into lower body portion 33 is formed on the underside of lower housing 21 around lead-in hole 43 and hole edge portion 50. Drain hole 46 is connected to one of spaces 52 that is connected to drain groove 54.

[0021] The housing 11 is formed by combining the connecting flange portion 24 of the upper housing 20 and the connecting flange portion 34 of the lower housing 21 via an annular packing 56, and connecting and fixing them with a plurality of screws 57. In the housing 11, the first housing portion 25 of the upper housing 20 and the second housing portion 37 of the lower housing 21 are in communication with each other via a communication hole 28. The communication hole 28 of the upper housing 20 and the communication hole 40 of the lower housing 21 are arranged substantially coaxially.

[0022] The light source section 12 also includes a light source 59, a lens 60 facing the light source 59, and a light source mounting section 61 on the upper surface of which the light source 59 and the lens 60 are mounted.

[0023] The light source 59 is configured as a light source module in which a plurality of light-emitting elements 63 are mounted in the center of the upper surface of a disc-shaped substrate 62. The lower surface of the substrate 62 is placed on the light source mounting portion 61 and fixed with screws. The light-emitting elements 63 may be, for example, a surface-mounted LED or a chip-type LED. One or more (for example, five or ten) light-emitting elements 63 are used depending on the brightness required for the aviation obstruction light 10. When a plurality of light-emitting elements 63 are used, they are densely arranged in the center of the substrate 62 and configured as a single pseudo light source.

[0024] The lens 60 is integrally formed from, for example, a transparent resin such as acrylic resin or glass, and controls the direction of light emitted from the light emitting element 63. The lens 60 is attached to the light source attachment portion 61 facing the light emitting element 63.

[0025] The light source mounting portion 61 is made of metal, and its peripheral portion is placed on the mounting step 30 of the upper housing 20 and fixed with screws. The light source 59 is disposed on the upper surface side of the light source mounting portion 61. A light source mounting base 64 protrudes upward from the center of the light source mounting portion 61, on which a board 62 of the light source 59 is placed and fixed with screws. A cutout 65 is provided in part of the peripheral portion of the light source mounting portion 61, through which a supply line that supplies lighting power from the circuit portion 14 to the light source 59 is inserted. The upper surface of the light source mounting portion 61 may be inclined downward toward the cutout 65.

[0026] The globe 13 is made of a translucent material, such as a resin, and is formed in the shape of a cap with an open bottom. An internal thread 66 is formed on the inner peripheral surface of the bottom of the globe 13, and is threaded onto the external thread 29 of the upper housing 20. The globe 13 is attached to the upper side of the housing 11 via an annular packing 67, and faces the light source unit 12 including the light source 59 and the lens 60.

[0027] Furthermore, the circuit unit 14 converts external power supplied from outside into a predetermined lighting power and supplies it to the light source 59, lighting up the light emitting element 63 of the light source 59. The circuit unit 14 is housed in a power supply case 69 made of resin, and is attached to the underside of the light source attachment part 61 by this power supply case 69.

[0028] A surge absorber (SPD: Surge Protective Device) (not shown) that absorbs lightning surges is connected to the external power input side of the circuit unit 14. This surge absorber is disposed in the second housing portion 37 of the lower housing 21, for example, but may also be disposed in the first housing portion 25 of the upper housing 20.

[0029] The terminal block 15 is disposed in the third housing portion 38 of the lower housing 21. The terminal block 15 has a first connection portion 71 to which the power supply line 44 drawn into the housing 11 is connected, and a second connection portion 73 to which a wiring 72 for connection with the circuit portion 14 is connected, and relays the electrical connection between the first connection portion 71 and the second connection portion 73.

[0030] The wiring 72 electrically connects the circuit unit 14 arranged on the upper side of the housing 11 with the terminal block 15 arranged on the lower side of the housing 11, and is arranged by passing through the communication holes 28, 40 of the multiple partition walls 27, 39. The wiring 72 contacts a part of the edge of the upper communication hole 28 and is arranged obliquely from the contact position toward the lower communication hole 40 so as to diametrically cross the communication holes 28, 40 in a top view. The wiring 72 passing through the lower communication hole 40 may be in contact with the edge of the communication hole 40 (the edge opposite to the contact position of the edge of the communication hole 28 with which the wiring 72 contacts).

[0031] Next, the operation of the aircraft obstruction light 10 will be described.

[0032] External power supplied by power line 44 is input to circuit section 14 via terminal block 15 and wiring 72, and circuit section 14 turns on light source 59, and light from light source 59 is emitted to the outside through lens 60 and globe 13.

[0033] Incidentally, there are aviation obstruction lights that have a completely sealed structure using packing to prevent rainwater from entering, but over time the packing absorbs external moisture and it enters the inside of the housing, causing the moisture to condense inside the housing 11, which can result in the accumulation of condensed water.

[0034] The aircraft obstruction light 10 of this embodiment can drain water that has condensed inside the housing 11 to the outside through the drain holes 46.

[0035] When the light source 59 of the obstacle light 10 is turned on, the light source 59 and the circuit section 14 become heat sources, and the temperatures of the light source mounting section 61 to which the light source 59 and the circuit section 14 are attached and the upper side of the housing 11 to which the light source mounting section 61 is attached increase. On the other hand, when the light source 59 is switched from the on state to the off state, the temperatures of the light source mounting section 61 and the upper side of the housing 11 decrease, and this temperature change makes it easy for condensation to form on the light source mounting section 61 and the upper side of the housing 11.

[0036] Water produced by condensation on the upper surface of the light source mounting portion 61 flows from the cutout portion 65 of the light source mounting portion 61 along the inner wall surface 26 of the first housing portion 25 onto the partition wall portion 27, or part of the water turns into droplets and falls onto the partition wall portion 27. Water produced by condensation on the lower surface of the light source mounting portion 61 flows along the inner wall surface 26 of the first housing portion 25 onto the partition wall portion 27, or part of the water turns into droplets and falls onto the partition wall portion 27. Water produced by condensation on the upper side of the first housing portion 25 of the housing 11 flows along the inner wall surface 26 of the first housing portion 25 onto the partition wall portion 27.

[0037] The water on the partition wall portion 27 flows or drops from the insertion hole 28 into the lower housing 21. Some of the water on the partition wall portion 27 flows down along the wiring 72 that contacts the edge of the insertion hole 28 into the third housing portion 38 of the lower housing 21. Some of the water on the partition wall portion 27 flows from the inner circumferential surface of the insertion hole 28 to the lower surface side of the partition wall portion 27, turning into droplets that fall onto the partition wall portion 39 on the lower side or fall into the third housing portion 38 through the insertion hole 40, or flow down along the inner circumferential surface of the second housing portion 37 onto the partition wall portion 39. Some of the water on the partition wall portion 39 flows down into the third storage portion 38 along the wiring 72 that contacts the insertion hole 40, or flows from the inner surface of the insertion hole 40 to the underside of the partition wall portion 39 and falls into the third storage portion 38 as droplets, or flows down through the inner wall surface of the third storage portion 38 to the bottom surface of the third storage portion 38.

[0038] The water that reaches the bottom surface of the third storage section 38 flows toward the drain hole 46 due to the inclination of the bottom surface of the third storage section 38, passes through the filter 47, and is drained from the drain hole 46 to the outside.

[0039] In this way, water due to condensation occurring in the upper part of the housing 11 is drained to the outside through a drainage path that passes through the insertion holes 28, 40 of the partition walls 27, 39 and leads to the drainage hole 46. A part of this drainage path is shared with the wiring path through which the wiring 72 is inserted.

[0040] The water drained from the drain hole 46 enters a space 52 through a recess 55 on the bottom surface of the lower housing 21, flows down or drops onto the installation surface of the installation location of the aviation obstruction light 10, and flows out to the outside through a drain groove 54.

[0041] As described above, in the aviation obstruction light 10 of this embodiment, water generated by condensation inside the housing 11 can be drained to the outside through the drainage holes 46, thereby preventing water from accumulating inside the housing 11.

[0042] Since the light source 59 and the circuit section 14, which are heat sources, are concentrated on the upper side of the housing 11, it is possible to identify areas where water is likely to form due to condensation and to easily design drainage paths.

[0043] The wiring 72 that passes through the insertion holes 28, 40 of the partition sections 27, 39 inside the housing 11 is arranged diagonally from a position where it contacts part of the edge of the upper communication hole 28 toward the lower communication hole 40 so as to diametrically cross the communication holes 28, 40 when viewed from above, so that water on the partition section 27 can flow down the wiring 72 to the lower side of the housing 11, reducing the amount of water on the partition section 27 that falls as droplets.

[0044] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0045] 10. Aviation Obstruction Lights 11. Housing 13 Gloves 14 Circuit section 27 Bulkhead 28 Communication hole 46 Drain hole 59 Light source 61 Light source mounting part 67 Gasket 72 Wiring

Claims

1. a light source; a globe containing the light source; a housing in which the light source is disposed on an upper side and the globe is attached via a packing, and which has a drain hole on a lower side that connects the inside and the outside; An aviation obstruction light characterized by comprising:

2. a light source mounting portion attached to an upper side of the housing, on whose upper surface the light source is disposed; a circuit section disposed on a lower surface side of the light source attachment section and configured to turn on the light source; 2. The aviation obstruction light according to claim 1, further comprising:

3. The interior of the housing is provided with a partition wall that divides the housing into upper and lower sections, and the partition wall is provided with a communication hole through which a wire connected to the circuit section is inserted, and the wire is disposed obliquely from a position where the wire contacts a part of the edge of the communication hole toward the lower side of the housing so as to cross the communication hole in a diameter direction in a top view.

3. An aircraft obstruction light according to claim 1 or 2.

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