Aircraft beacon

Abstract

To provide an aviation obstruction light equipped with a reflecting plate having a desired curvature.SOLUTION: The lighting fixture is provided with a light source 60, a reflecting plate 71 reflecting light of the light source 60, and a guide 91 having a curved shape and guiding the curve of the reflecting plate 71, and both long side parts of the reflecting plate 71 are held by the guide 91.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an aviation obstruction light. [Background technology]

[0002] Conventionally, to prevent aviation accidents, aviation obstacle lights have been installed on tall buildings such as skyscrapers and radio towers. Patent Document 1 discloses an aviation obstacle light that is installed on a tall building and uses a reflector to emit light in a direction along the installation surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-82360 Summary of the Invention [Problem to be solved by the invention]

[0004] Some obstruction lights emit light perpendicular to the installation surface, and the optical characteristics of such lights, such as beam angle and light intensity, are regulated by the Civil Aviation Bureau. To meet these regulations, the reflector angle, which affects the beam angle and light intensity of the obstruction light, must be accurate.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide an aircraft obstruction light having a reflector with a desired curvature. [Means for solving the problem]

[0006] The aviation obstruction light of the present invention comprises a light source, a reflector that reflects light from the light source, and a curved guide that guides the curvature of the reflector, and both long sides of the reflector are held by the guides. [Effects of the Invention]

[0007] According to the present invention, an aircraft obstruction light having a reflector with a desired curvature can be provided. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing the appearance of an aviation obstruction light according to an embodiment of the present invention. FIG. [Figure 2] FIG. 1 is a plan view showing an aviation obstruction light with the cover removed. [Figure 3] FIG. 3 is a vertical cross-sectional view of the aviation obstruction light taken along line III-III in FIG. 2. [Figure 4] FIG. 2 is a perspective view showing the main configuration of an aviation obstruction light with the housing omitted. [Figure 5] FIG. 2 is a perspective view showing a light output unit of an aircraft obstruction light. [Figure 6] FIG. 2 is an exploded view showing a state in which the reflector portion is separated from the light output unit of the aircraft obstruction light. [Figure 7] FIG. 2 is an exploded view of a reflector portion of the light output unit. [Figure 8] FIG. 2 is a perspective view showing a non-reflective surface of a reflector portion of the light output unit. DETAILED DESCRIPTION OF THE INVENTION

[0009] The aviation obstruction light comprises a light source, a reflector that reflects light from the light source, and a curved guide that guides the curvature of the reflector, with both long sides of the reflector being held by the guides.

[0010] To satisfy the regulations of the Civil Aviation Bureau, the reflection angle must be finely adjusted, and when using a reflector to reflect the light of the light source, the reflector must have the desired curvature. In this aircraft obstruction light, the reflector is curved to a curvature corresponding to the guide rod by a guide curved to a predetermined shape, and only both long sides of the reflector are held by the guide. Therefore, the reflector curves along the curved shape of the guide rod, and the reflector can be curved to the desired curvature, allowing the reflection angle to be finely adjusted.

[0011] The aviation obstruction light may have a plurality of guides, each having a support part supporting one end of the guide, and a holding part provided on the support part for holding the light source so as to face the reflective surface of the reflector, and a rod member attached to one long side of the reflector near the one end of the guide, along the one long side, on the side of the reflective surface, and the one long side of the reflector may be clamped by the holding part and the support part via the rod member. A rod member is attached along one long side of the reflector, and the long side is clamped by the holding part and the support part via the rod member, so that a uniform clamping force is applied over the entire range of the long side. Also, it is possible to prevent changes in the curvature of the reflector due to bending the long side of the reflector for fixing it to the guide, and the reflector can be curved accurately as desired.

[0012] The aviation obstruction light has the other long side of the reflector guided by the guide and extending from the other end of the guide, and is provided with a front clamping portion and a back clamping portion that clamp the other long side of the reflector from the reflective surface and the non-reflective surface opposite the reflector, respectively, and the other long side of the reflector may be fixed to the other end of the guide via the back clamping portion. The other long side of the reflector is clamped by the front clamping portion and the back clamping portion while projecting from the other end of the guide, and is fixed to the other end of the guide via the back clamping portion, so that a uniform clamping force is applied over the entire range of the other long side. The curvature of the reflector does not change when the other long side of the reflector is bent or screwed to fix it to the guide, and the reflector is fixed to the guide with the desired curvature, thereby achieving the desired optical characteristics.

[0013] Fig. 1 is a diagram showing the appearance of an aviation obstruction light 1 of this embodiment. Fig. 1A is a front view of the aviation obstruction light 1, Fig. 1B is a plan view of the aviation obstruction light 1, and Fig. 1C is a side view of the aviation obstruction light 1.

[0014] The aircraft obstruction light 1 includes a housing 20 that is rectangular in plan view. An opening 21 is formed in one wall of the housing 20, and the opening 21 is covered by a rectangular lid 10 that has approximately the same dimensions as the one wall of the housing 20. A transparent window 11 is provided in the lid 10 at a position corresponding to the opening 21 in the housing 20.

[0015] In the housing 20, legs 30 for fixing the housing 20 to an installation surface are provided on the outer surface of the opposing wall that faces the one wall. The legs 30 are provided at both ends in the length direction of the opposing wall. In addition, heat dissipation fins 40 are provided between the two legs 30 on the outer surface of the opposing wall of the housing 20. In the following description, for convenience, the opposing direction between the one wall and the opposing wall of the housing 20 is referred to as the up-down direction.

[0016] FIG. 2 is a plan view showing the aviation obstruction light 1 with the cover 10 removed, FIG. 3 is a longitudinal cross-sectional view of the aviation obstruction light 1 taken along line III-III in FIG. 2, and FIG. 4 is a perspective view showing the main configuration of the aviation obstruction light 1 with the housing 20 omitted.

[0017] The housing 20 houses two light-emitting units 100A and 100B, each with different optical characteristics of emitted light, such as beam angle and light intensity. Despite their different optical characteristics, the light-emitting units 100A and 100B have substantially the same configuration. In addition, a light-shielding portion 50 is provided near the opening 21 of the housing 20 to prevent light from a light source 60 (described later) from being directly visible from outside the housing 20.

[0018] A support block 24 (support portion) that supports the light output units 100A and 100B is provided on the inner surface of the opposing wall of the housing 20. The support block 24 has a flat rectangular parallelepiped shape extending in the longitudinal direction of the opposing wall and is made of a metal with good thermal conductivity, such as aluminum. A step is formed along the longitudinal direction of the support block 24 on one surface of the support block 24 that faces the window 11. Specifically, a convex portion 242 that is convex in cross section is formed in the center of the width of the support block 24, and the upper surface of the convex portion 242 is a roughly mountain-shaped reflective surface. A holding portion 80 that holds the light source 60 is provided in the center of the upper surface of the convex portion 242. The support block 24 and the holding portion 80 are integrally formed (see FIG. 5).

[0019] A plurality of insertion grooves 241 into which guides 91, which will be described later, are inserted are formed in the protrusion 242 of the support block 24. The plurality of insertion grooves 241 are formed at equal intervals in the longitudinal direction of the support block 24. Each insertion groove 241 has a shape corresponding to the lower end of the guide 91, and is formed from the edge of the protrusion 242 toward the center. A plurality of screw holes 243 (see FIG. 6) for fixing a reflector unit 70, which will be described later, are formed in the upper surface of the protrusion 242 between the insertion grooves 241.

[0020] An opening is formed in the opposing wall of the housing 20, and the other surface of the support block 24 opposite the protrusion 242 abuts against the heat dissipation fins 40 through the opening. Heat generated in the light-emitting units 100A and 100B is transferred to the heat dissipation fins 40 through the support block 24 and is air-cooled by the heat dissipation fins 40.

[0021] The light sources 60 for the two light-emitting units 100A and 100B are held in the holding portion 80. The holding portion 80 is made of a metal with good thermal conductivity, such as aluminum, and is provided in the center of the protrusion 242 of the support block 24 along the longitudinal direction of the support block 24, as described above.

[0022] The holding portion 80 has both widthwise edge portions cut away, and inclined surfaces 82 are formed along the length of the holding portion 80. The inclined surfaces 82 are inclined toward the center of the support block 24. In other words, the distance between the inclined surfaces 82 becomes shorter the further downward.

[0023] Further, protrusions 81 are provided near the lower edges of each inclined surface 82 and along the lower edges of the inclined surfaces 82. More specifically, notches 83 are formed by cutting out both edges in the width direction below the holding portion 80 in a rectangular cross-sectional shape, and the upper portion adjacent to the notches 83 forms the protrusions 81. That is, the protrusions 81 are provided a predetermined distance above the upper surface of the convex portion 242 of the support block 24 and parallel to the convex surface.

[0024] The light output units 100A and 100B include a light source 60, a reflector portion 70 that reflects light from the light source 60, and a frame 90 that fixes the reflector portion 70.

[0025] The light-emitting unit 100A will be described in detail below. The light-emitting unit 100B has the same configuration as the light-emitting unit 100A, so the components of the light-emitting unit 100B are given the same reference numerals as the corresponding components of the light-emitting unit 100A, and detailed descriptions will be omitted.

[0026] Fig. 5 is a perspective view showing the light emitting unit 100A of the aircraft obstruction light 1. For convenience, Fig. 5 shows only the holding portion 80 and the light emitting unit 100A, and the holding portion 80 is shown in vertical cross section.

[0027] The light source 60 has a plurality of LEDs 61, a substrate 62 on which the LEDs 61 are mounted, and a fixing portion 63 to which the substrate 62 is fixed. The light source 60 is provided such that the upper long side of the fixing portion 63 is aligned with the upper long side of the holding portion 80.

[0028] The fixing portion 63 has a length approximately equal to that of the inclined surface 82 and has a shape of a long, thin rectangular thick plate with one side slightly larger than the mounting surface of the board 62. The fixing portion 63 is made of a metal with good thermal conductivity such as aluminum, and the board 62 is screwed to the one side of the fixing portion 63. The fixing portion 63 is screwed to the inclined surface 82 of the holding portion 80. A protrusion 81 is disposed near the lower long side of the fixing portion 63. Silicon grease may be applied between the fixing portion 63 and the holding portion 80.

[0029] The substrate 62 is made of insulating resin and has a long, narrow rectangular shape extending along the length of the support block 24. The LEDs 61 are arranged in series at equal intervals in the center of the mounting surface of the substrate 62 along the length of the substrate 62.

[0030] With the above configuration, light from the light source 60 (LED 61) is emitted toward the reflector portion 70. In other words, the holder 80 holds the substrate 62 via the fixing portion 63 so that the mounting surface of the substrate 62 faces a reflecting surface 711 (described later) of the reflector portion 70, i.e., so that light from the LED 61 irradiates the reflecting surface 711.

[0031] Fig. 6 is an exploded view showing a state in which the reflector portion 70 is separated from the light-emitting unit 100A of the aircraft obstruction light 1. For convenience, Fig. 6 shows only the holding portion 80, the support block 24, and a part of the light-emitting unit 100B.

[0032] The frame 90 has a plurality of guides 91. Each guide 91 has a curved shape and guides the curvature of a reflector 71 (described later) of the reflector unit 70. That is, the reflector 71 is guided by the plurality of guides 91 to maintain a state in which it is curved to a desired curvature. At this time, the plurality of guides 91 hold the reflector 71 from the non-reflecting surface 712 side opposite to the reflecting surface 711 of the reflector 71 facing the light source 60.

[0033] As described above, the lower end of each guide 91 is inserted into and fixed in the corresponding insertion groove 241 of the protrusion 242, and multiple guides 91 are arranged side by side at equal intervals over a range from near one end to near the other end in the longitudinal direction of the protrusion 242. Each guide 91 is curved in the shape of the same parabola, and is arranged so that the focus of the parabola is located on the light source 60 side. On the other end side of each guide 91, the tip is bent in a direction away from the light source 60 and protrudes parallel to the opposing wall of the housing 20.

[0034] As described above, one end portion of the lower side of the plurality of guides 91 is fixed to the protrusion 242, so that the protrusion 242 (support block 24) and the plurality of guides 91 form a comb shape in plan view.

[0035] FIG. 7 is an exploded view of the reflector portion 70 of the light-emitting unit 100A, and FIG. 8 is a perspective view showing a non-reflecting surface 712 of the reflector portion 70 of the light-emitting unit 100A. The reflecting plate section 70 includes a reflecting plate 71, an intervening bar 72 (a rod member), a front clamping section 73, and a rear clamping section 74.

[0036] The reflector 71 is made of a bendable rectangular metal plate and has a roughly semi-cylindrical shape. The longitudinal dimension (axial direction) of the reflector 71 is slightly longer than the length of the protrusion 242 (support block 24) (see FIG. 5), and extends along the longitudinal direction of the support block 24, i.e., the direction in which the multiple guides 91 of the frame 90 are arranged side by side. As described above, the bending of the reflector 71 is guided by the multiple guides 91 of the frame 90, and therefore the reflector 71 is curved with the same radius of curvature as the guides 91.

[0037] The reflector 71 has a mirror-finished reflecting surface 711 and a non-reflecting surface 712 opposite the reflecting surface 711. As described above, the reflecting surface 711 of the reflector 71 faces the mounting surface of the substrate 62 of the light source 60, and reflects the light emitted from the LED 61 toward the window 11.

[0038] An intervening bar 72 is attached to the reflecting surface 711 at one of the lower long sides 713 of the reflecting plate 71. The intervening bar 72 is a square metal bar that extends along the one long side 713. The length of the intervening bar 72 is slightly shorter than the dimension of the one long side 713. For example, silicone grease is applied between the intervening bar 72 and the one long side 713.

[0039] Furthermore, a plurality of through holes 713a are formed in one long side portion 713 at positions corresponding to the interposition bar 72. The through holes 713a are formed at predetermined intervals along the one long side portion 713. The lower end portion (one long side portion 713) of the reflecting plate 71 may be fixed to the upper surface of the protrusion 242 using the through holes 713a and the screw holes 243 of the protrusion 242.

[0040] The dimension of the intervening bar 72 in the up-down direction is approximately equal to the distance between the upper surface of the convex portion 242 and the protruding portion 81 of the holding portion 80, and the intervening bar 72, together with one long side portion 713, is interposed between the upper surface of the convex portion 242 and the protruding portion 81. In other words, one long side portion 713 of the reflecting plate 71 is sandwiched between the protruding portion 81 of the holding portion 80 and the convex portion 242 via the intervening bar 72 (see FIG. 5).

[0041] The other long side 714 of the reflector 71 is clamped by the front clamping portion 73 and the back clamping portion 74, and while being clamped by the front clamping portion 73 and the back clamping portion 74, the other long side 714 of the reflector 71 is screwed to the other end of the plurality of guides 91 via the back clamping portion 74. The other long side 714 of the reflector 71 is guided by the guide 91 and protrudes upward from the tip of the other end of the guide 91. The front clamping portion 73 is arranged on the reflective surface 711 side of the other long side 714, and the back clamping portion 74 is arranged on the non-reflective surface 712 side. The front clamping portion 73 and the back clamping portion 74 clamp the other long side 714 that rises upward without bending it.

[0042] Front clamping portion 73 is made of metal and has a band shape, and is provided along the other long side portion 714. Front clamping portion 73 abuts against reflective surface 711 of the other long side portion 714. The length of front clamping portion 73 is equal to the length of the other long side portion 714.

[0043] The rear clamping portion 74 has a substantially L-shape in vertical cross section and extends along the other long side 714 of the reflector 71. The length of the rear clamping portion 74 is equal to the length of the front clamping portion 73. The rear clamping portion 74 has a first fixing portion 741 fixed to the other end of the guide 91 and a second fixing portion 742 fixed to the other long side 714.

[0044] The second fixing portion 742 is made of metal, has a band shape, and is provided along the other long side portion 714. The second fixing portion 742 abuts against the non-reflective surface 712 of the other long side portion 714. The second fixing portion 742 is disposed at a position corresponding to the front clamping portion 73 in the thickness direction of the reflector 71. The length of the second fixing portion 742 is equal to the length of the other long side portion 714.

[0045] Of the two long sides of the second fixing portion 742, the first fixing portion 741 is connected to the lower long side. The first fixed portion 741 is substantially strip-shaped and protrudes from the second fixed portion 742 substantially parallel to the opposing wall of the housing 20. The first fixed portion 741 and the second fixed portion 742 are integrally formed.

[0046] In the second fixing portion 742, an adhesive, for example, is applied to the contact surface that contacts the other long side portion 714, and the second fixing portion 742 is adhered to the non-reflective surface 712 of the other long side portion 714. In addition, in the front clamping portion 73, an adhesive, for example, is applied to the contact surface that contacts the other long side portion 714, and the front clamping portion 73 is adhered to the reflective surface 711 of the other long side portion 714. In this way, the other long side portion 714 is clamped between the front clamping portion 73 and the back clamping portion 74.

[0047] The first fixing portion 741 is fixed to the tip portion of the upper side (other end side) of each guide 91. For example, an adhesive is applied to the lower surface of the first fixing portion 741, and the tip portion of the upper side (other end side) of each guide 91 is adhered to it. However, this is not limitative, and the tip portion of each guide 91 may be welded to the lower surface of the first fixing portion 741. As a result, the rear clamping portion 74 is fixed to the other end of the guide 91 , and the other long side portion 714 of the reflecting plate 71 is fixed to the other end of the guide 91 via the rear clamping portion 74 .

[0048] As described above, the light-emitting units 100A and 100B in the aviation obstruction light 1 have substantially the same configuration, but the curvatures of the reflectors 71 are slightly different. The curvature of the reflector 71 of the light-emitting unit 100A is slightly larger than the curvature of the reflector 71 of the light-emitting unit 100B.

[0049] Since the curvature of the reflector 71 is different in this way, the light output units 100A and 100B have different emission ranges of reflected light in the intersecting direction that intersects with the length direction of the reflector 71. The light output unit 100A has a wider emission range of reflected light in the intersecting direction than the light output unit 100B.

[0050] In the aviation obstruction light 1 of this embodiment, as described above, one long side 713 of the reflector 71 is clamped by the protrusion 81 and the convex portion 242 of the holding portion 80 via the intervening bar 72, so that a uniform clamping force is applied over the entire range of the one long side 713.

[0051] Therefore, for example, the fixing work of the reflector 71 is simplified compared to when screws are fastened locally, and there is no need to worry about deformation of the reflector 71 due to stress concentration, and the reflector 71 can be curved accurately as desired.

[0052] Furthermore, in the aircraft obstruction light 1 of this embodiment, as described above, only the two long sides of the reflector 71 are fixed to the frame 90. This increases the degree of freedom in bending and deforming the reflector 71. Furthermore, since the bending of the reflector 71 is guided by the guides 91 of the frame 90, the reflector 71 can be bent accurately as desired.

[0053] If the other long side portion 714 of the reflector 71 is bent and then directly fixed to the other end portion of the guide 91, the curvature of the reflector 71 may change, and desired optical characteristics may not be obtained. In contrast, in the aircraft obstacle light 1 of this embodiment, the other long side portion 714 of the reflector 71 is guided by the guide 91 and extends upward, and in this state, the other long side portion 714 is fixed to the other end portion of the guide 91 using the front clamping portion 73 and the back clamping portion 74 without being bent. Therefore, a uniform clamping force is applied over the entire range of the other long side portion 714, which prevents the curvature of the reflector 71 from changing and obtains desired optical characteristics.

[0054] The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the claims, not by the above meaning, and is intended to include all modifications within the meaning and scope of the claims.

[0055] The matters described in each embodiment can be combined with each other. Furthermore, the independent claims and dependent claims described in the claims can be combined with each other in any and all combinations, regardless of the reference format. Furthermore, the claims use a format in which a claim references two or more other claims (multiple claim format), but this is not limited to this. A multiple claim (multi-multi claim) that references at least one other multiple claim may also be used. [Explanation of symbols]

[0056] 1. Aviation Obstruction Lights 60 light source 61 LED 70 Reflector section 71 Reflector 72 Intervening Bar 73 Front clamping part 74 Back clamping part 80 Holding part 83 Cutout 90 frames 91 Guide 100A, 100B Idemitsu unit 711 Reflective surface 712 Non-reflective surface 713 One long side 714 Other long side

Claims

1. A light source and a reflector that reflects light from the light source; a guide for guiding the curvature of the reflector, An aviation obstruction light in which both long sides of the reflector are held by the guide.

2. the guide is plural; a support portion for supporting one end of each guide; a holder provided on the support and holding the light source so as to face the reflective surface of the reflector; a rod member is attached to one long side of the reflecting plate near the one end of the guide on the reflecting surface side along the one long side, 2. The aircraft obstruction light according to claim 1, wherein the one long side of the reflector is clamped between the holding portion and the support portion via the rod member.

3. the other long side of the reflector is guided by the guide and protrudes from the other end of the guide, a front clamping portion and a back clamping portion that clamp the other long side portion of the reflector from a reflective surface and a non-reflective surface opposite to the reflective surface, respectively; 3. The aircraft obstruction light according to claim 1, wherein the other long side of the reflector is fixed to the other end of the guide via the rear clamping portion.

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