JP2021039908A - Aircraft warning light - Google Patents

Abstract

To provide an aircraft warning light which can efficiently guide light toward a desired light emission direction.SOLUTION: An aircraft warning light 10 comprises: a light body 12 including an emission port 35; a first lens 25 provided at the emission port 35; a light emitting device 62 provided in the light body 12; and a supporting part 57 for holding the light emitting device 62 so that an optical axis a of the light emitting device 62 is directed upward relative to a middle point in an upper and lower direction of the first lens 25.SELECTED DRAWING: Figure 1

Description

An embodiment of the present invention relates to an aviation indicator lamp whose light source is a light emitting element.

Conventionally, aviation indicator lights include embedded aviation indicator lights embedded in road surfaces such as airport runways and taxiways. In the case of this aviation indicator light, a light body having an outlet is installed on the road surface. A lens is provided at the outlet of the lamp body, and a light emitting element is provided inside the lamp body. Then, the light of the light emitting element passes through the lens and is emitted from the exit port in a desired emission direction.

In such an aviation indicator lamp, if a part of the light transmitted through the lens is blocked by a lamp body or the like, it is not possible to efficiently extract the light in a desired emission direction.

Therefore, there is a demand for an aviation indicator lamp that can efficiently extract light in a desired emission direction.

Japanese Unexamined Patent Publication No. 2015-65045

An object of the present invention is to provide an aviation indicator lamp capable of efficiently extracting light in a desired emission direction.

The aviation indicator lamp of the embodiment has a lamp body having an exit port, a lens provided at the exit port, a light emitting element provided inside the lamp body, and a state in which the optical axis of the light emitting element faces the upper side of the middle of the lens in the vertical direction. Is provided with a support portion for supporting the light emitting element.

According to the aviation indicator lamp of the embodiment, it can be expected that light can be efficiently extracted in a desired emission direction.

It is sectional drawing of the aviation indicator light which shows one Embodiment. It is an exploded perspective view of the lamp body of the aviation indicator lamp of the same as above. It is a perspective view of the lamp body and the adjustment ring of the same as above. It is explanatory drawing explaining the relationship between the lamp body and the adjustment ring, and the optical axis of the light emitting element provided in the lamp body.

Hereinafter, one embodiment will be described with reference to the drawings.

FIG. 1 shows an embedded aviation indicator light 10 embedded in a road surface such as an airport runway or taxiway. The aviation indicator light 10 includes an installation body 11 embedded in the road surface and a light body 12 mounted on the installation body 11.

The installation body 11 includes a bottomed and cylindrical base 15, and an annular adjusting ring 16 mounted on the base 15. The base 15 and the adjusting ring 16 are made of, for example, metal. The base 15 is provided with a bottomed and cylindrical base body and a cylindrical spacer for adjusting the embedding depth mounted on the base body, and an adjustment ring 16 is provided on the base body. Is attached. Then, the installation body 11 is embedded and installed so that the peripheral portion of the upper surface of the adjustment ring 16 is substantially the same height as the road surface. A connection cable from a constant current control device (CCR) (not shown) is drawn into the installation body 11 to be embedded and installed.

The adjusting ring 16 is rotatably attached to the installation body 11 (Zama) within a range of a predetermined angle, and the orientation of the lamp body 12 attached to the adjusting ring 16 can be adjusted.

At the center of the adjusting ring 16, an opening 17 into which the lamp body 12 is fitted from above is formed so as to penetrate vertically. A step portion 18 that supports the lamp body 12 is formed on the peripheral edge of the opening 17 of the adjustment ring 16. An inclined surface 19 is formed on the upper surface of the adjusting ring 16 so as to be inclined downward from the inner peripheral portion to the outer peripheral portion of the adjusting ring 16.

As shown in FIGS. 1 and 3, at least one position on the upper surface of the adjusting ring 16 is formed with an exit groove 20 extending from the inner peripheral portion to the outer peripheral portion of the adjusting ring 16. The bottom surface of the exit groove 20 is formed so as to be inclined so as to rise diagonally from the inner peripheral portion of the adjusting ring 16 toward the outer peripheral portion, and both side surfaces thereof are formed from the inner peripheral portion of the adjusting ring 16 to the outer peripheral portion. It is formed in an inclined shape so as to expand each other toward the portion. The outer peripheral portion of the bottom surface of the exit groove 20 is formed at the same height as the outer peripheral portion of the adjusting ring 16.

A protruding portion 21 projects from the bottom surface of the exit groove 20. The protrusion 21 is formed in a flat plate shape along the radial direction of the adjusting ring 16. The protrusion 21 is one in the present embodiment, and is provided at the center in the direction along the circumferential direction of the adjusting ring 16 in the exit groove 20, that is, in the left-right direction. The protruding portion 21 is projected so as to divide the exit groove 20 in the left-right direction. The upper surface of the protrusion 21 is provided parallel to the inclined surface 19 on the upper surface of the adjusting ring 16. In addition, for example, two or more projecting portions 21 may be provided in the left-right direction of the exit groove 20.

In the present embodiment, the exit groove 20 and the protrusion 21 are provided at two positions symmetrically on the circumference of the adjustment ring 16.

Further, as shown in FIGS. 1 to 3, the lamp body 12 includes an upper lamp body 23 and a lower lamp body 24 arranged on the lower side of the upper lamp body 23. A first lens 25, which is a lens, a light source unit 26, and a lighting unit (not shown) are provided in the lamp body 12.

The upper lamp body 23 is made of metal, for example, and is formed in a disk shape. A substantially flat upper surface portion 29 is formed in the center of the upper surface of the upper lamp body 23, and the peripheral portion of the upper surface of the upper lamp body 23 is inclined downward from the outer peripheral portion of the upper surface portion 29 to the outer peripheral portion of the upper lamp body 23. An inclined surface 30 is formed. Then, in a state where the lamp body 12 is attached to the adjustment ring 16, the inclined surface 30 of the upper lamp body 23 and the inclined surface 19 of the adjustment ring 16 become substantially continuously inclined surfaces at substantially the same inclination angle.

A plurality of mounting recesses 31 that open on the upper surface side and the outer peripheral side of the upper lamp body 23 are formed in the peripheral portion of the upper lamp body 23, and an insertion hole 32 that penetrates in the vertical direction is provided at the bottom of these mounting recesses 31. ing. The upper lamp body 23 is attached to the installation body 11 by fastening parts such as bolts that penetrate the insertion hole 32 and the lower lamp body 24 and are screwed to the adjustment ring 16.

At the center of the lower surface of the upper lamp body 23, an inner inclined surface 33 is formed, which has a low central portion and is inclined so as to be high from the central portion toward the peripheral portion. The inner inclined surface 33 is provided so as to be inclined toward the exit port 35, which will be described later.

A ring-shaped lens arranging portion 34 on which the ring-shaped first lens 25 is arranged is formed around the lower surface of the upper lamp body 23.

An outlet 35 is provided at least at one of the peripheral portions of the upper lamp body 23. The exit port 35 is opened so as to communicate with the inner lower surface of the upper lamp body 23, that is, the lens arrangement portion 34 and the outer upper surface. The exit port 35 is formed so that the width along the circumferential direction of the upper lamp body 23, that is, the width in the left-right direction is wider than the width in the up-down direction.

An emission groove 36 is formed on the outside of the emission port 35 at at least one position around the upper surface of the upper lamp body 23. The bottom surface of the exit groove 36 is formed so as to be inclined so as to rise diagonally from the exit port 35 toward the outer peripheral portion of the upper lamp body 23, and both side surfaces thereof are formed from the outlet port 35 to the upper lamp body 23. It is formed in an inclined shape so as to expand each other toward the outer peripheral portion. Then, with the lamp body 12 attached to the adjustment ring 16, the bottom surface and both side surfaces of the emission groove 36 of the upper lamp body 23 and the bottom surface and both side surfaces of the emission groove 20 of the adjustment ring 16 are at substantially the same inclination angle, respectively. The surface is almost continuously inclined.

A protrusion 37 projects from the bottom surface of the exit groove 36. The protruding portion 37 projects to the outside of the exit port 35 so as to divide the exit port 35 in the left-right direction. The protrusion 37 is formed in a flat plate shape along the radial direction of the upper lamp body 23. The protrusion 37 is one in the present embodiment, and is provided at the center of the emission groove 36 in the direction along the circumferential direction of the upper lamp body 23, that is, in the left-right direction. The upper surface of the protrusion 37 is formed on the same surface as the inclined surface 30. Then, with the lamp body 12 attached to the adjusting ring 16, the protruding portion of the upper lamp body 23 and the protruding portion 21 of the adjusting ring 16 are linearly arranged along the radial direction of the lamp body 12. As with the protruding portion 21 of the adjusting ring 16, two or more protruding portions 37 may be provided in the left-right direction of the exit groove 20.

In the present embodiment, the exit port 35 and the exit groove 36 are provided at two positions symmetrically on the circumference of the upper lamp body 23, similarly to the exit groove 20 of the adjustment ring 16.

The lower lamp body 24 is made of metal, for example. The lower lamp body 24 has a flange portion 39 and a tubular portion 40 projecting from the lower surface side of the flange portion 39. The flange portion 39 is formed in a disk shape, and the peripheral portion is fitted and attached to the lower surface side of the upper lamp body 23. A plurality of insertion holes 41 through which fastening parts such as bolts for inserting the insertion holes 32 of the upper lamp body 23 are inserted are provided in the peripheral portion of the flange portion 39. Further, an opening 42 through which the light source unit 26 is inserted is formed in the center of the flange portion 39. A plurality of mounting holes 43, which are mounting portions for mounting the light source unit 26, are formed at the edge of the opening 42 of the flange portion 39.

The lower surface side of the tubular portion 40 of the lower lamp body 24 is opened, and an accommodating portion 44 for accommodating the light source unit 26 and the lighting unit is formed inside. A lower lamp cover (not shown) is attached to the lower surface side of the cylinder 40.

Further, the first lens 25 is made of glass, for example, and has a ring shape. The first lens 25 is arranged in a state of being sandwiched between the lens arrangement portion 34 of the upper lamp body 23 and the upper surface of the flange portion 39 of the lower lamp body 24 via a packing (not shown). The first lens 25 is provided so as to face the exit port 35 or inside the exit port 35.

An incident surface 47 on which light from the light source unit 26 is incident is formed on the inner peripheral surface side of the first lens 25, and an exit surface 48 on which light incident from the incident surface 47 is emitted toward the exit port 35 on the outer peripheral surface side. Is formed. The exit surface 48 faces the exit port 35 and is exposed to the outside from the exit port 35. The first lens 25 is a prism that bends the incident light in a predetermined direction and emits it.

The incident surface 47 is formed as a concave surface that is linear in the vertical direction and curved in the circumferential direction. The vertical direction of the incident surface 47 is inclined so that the upper side is located closer to the center of the upper lamp body 23 than the lower side.

The exit surface 48 is formed as a convex surface that is linear in the vertical direction and curved in the circumferential direction. The vertical direction of the exit surface 48 is inclined so that the upper side is located closer to the center of the upper lamp body 23 than the lower side. The inclination angle of the exit surface 48 is larger than the inclination angle of the entrance surface 47.

Further, the light source unit 26 includes a light source unit main body 51, a light emitting module 52, and a second lens 54 as an optical component 53.

The light source unit main body 51 has a unit plate 56 and a support portion 57 provided at the center of the upper surface of the unit plate 56. The unit plate 56 and the support portion 57 are made of, for example, metal. The unit plate 56 and the support portion 57 may be separate or integrated.

A plurality of insertion holes 58 are provided in the peripheral portion of the unit plate 56. Then, the peripheral portion of the unit plate 56 is arranged on the lower surface side of the flange portion 39 of the lower lamp body 24, and fastening parts such as bolts for inserting the insertion hole 58 are screwed into the mounting hole 43 of the flange portion 39. , The unit plate 56 is attached to the lower surface side of the flange portion 39.

The support portion 57 is a convex portion having a trapezoidal cross-sectional shape in the direction facing the outlet 35. The upper side of the support portion 57 is arranged inside the upper lamp body 23 through the opening 42 provided in the flange portion 39 of the lower lamp body 24. On the upper side of the support portion 57, a side surface 59 facing the exit port 35 is provided. The side surface 59 is provided in a flat shape. The side surface 59 is provided long in the left-right direction corresponding to the shape of the outlet 35. The side surface 59 is inclined so that the upper side faces the outlet 35 and is located closer to the center side of the support portion 57 (or the center side of the upper lamp body 23) than the lower side.

The light emitting module 52 includes a substrate 61 and a light emitting element 62 mounted on the substrate 61. The substrate 61 is formed in a rectangular shape that is long in the left-right direction. The substrate 61 is attached so that the back surface side opposite to the front surface side on which the light emitting element 62 is mounted is in surface contact with the side surface 59 of the support portion 57.

As the light emitting element 62, for example, a semiconductor light emitting element such as an LED element or an EL element is used. In the case of LED elements, a method of mounting an SMD (Surface Mount Device) package with a connection terminal on which an LED element is mounted on a substrate 61, or a method of mounting a plurality of LED chips on a substrate 61 and a sealing member containing a phosphor. A COB (Chip On Board) method or the like covered with is used.

A plurality of light emitting elements 62 are mounted on the substrate 61. The plurality of light emitting elements 62 are arranged side by side in the left-right direction along the longitudinal direction of the substrate 61. When the exit port 35 has a protrusion 37 protruding to the outside of the exit 35 so as to divide the exit 35 in the left-right direction, the plurality of light emitting elements 62 may have the exit 35 (first) on both sides of the protrusion 37 in the left-right direction. It faces the lens 25) of. In this case, when the number of protruding portions 37 is one (odd number), it is preferable that the number of light emitting elements 62 is an even number such as two, four, or six, and the same number is arranged on both sides of the protruding portion 37 in the left-right direction. .. When the number of protruding portions 37 is two (even numbers), it is preferable that the number of light emitting elements 62 is an odd number such as three or nine, and the same number is arranged on both sides of each protruding portion 37 in the left-right direction.

The light emitting element 62 has an optical axis a in a direction perpendicular to the center of the light emitting surface of the light emitting element 62. The light emitting element 62 is supported by the support portion 57 so that the optical axis a faces upward from the middle in the vertical direction of the first lens 25. That is, by arranging the substrate 61 on which the light emitting element 62 is mounted on the side surface 59 of the support portion 57, the light emitting element 62 is in a state where the optical axis a faces the upper side of the first lens 25 in the vertical direction rather than the middle. It is supported. The state in which the optical axis a of the light emitting element 62 is directed toward the upper side of the first lens 25 in the vertical direction is that the light directed from the light emitting element 62 toward the optical axis a is incident on the first lens 25. It is in a state of being incident on the upper side of the surface 47 in the vertical direction.

The optical component 53 collects the light of the light emitting element 62, and the second lens 54 is used in the present embodiment. The second lens 54 is made of glass or a transparent resin. The second lens 54 is provided with one lens unit 64 for one light emitting element 62. When a plurality of light emitting elements 62 are provided side by side on the substrate 61, the plurality of lens portions 64 are integrally provided by the lens connecting portion 65. The second lens 54 is provided between the light emitting element 62 and the first lens 25, and collects the light of the light emitting element 62 and causes it to enter the first lens 25. The optical axis of the second lens 54 coincides with the optical axis a of the light emitting element 62. Therefore, the second lens 54 collects light so that the optical axis a of the light emitting element 62 faces upward from the middle in the vertical direction of the first lens 25. Further, the lens unit 64 is configured so that the light distribution in the left-right direction about the optical axis is wider than the light distribution in the up-down direction. The lens portion 64 is formed in a substantially truncated cone shape, but is formed in an elliptical truncated cone shape so that the light distribution in the horizontal direction centered on the optical axis is wider than the light distribution in the vertical direction. ing. As the optical component 53, a reflector that collects the light of the light emitting element 62 may be used.

A plurality of bosses 66 are provided on the lens connecting portion 65. The tip portions of the plurality of bosses 66 are in contact with the substrate 61, and the facing positions of the lens portion 64 and the light emitting element 62 are kept constant. Then, the screw 67 for inserting the boss 66 is screwed to the support portion 57, so that the second lens 54 and the substrate 61 are integrally attached to the side surface 59 of the support portion 57, and the back surface side of the substrate 61 is the support portion 57. It is pressed so as to be in close contact with the side surface 59 of the.

Further, the lighting unit, for example, rectifies the alternating current constant current supplied from the constant current control device (CCR), converts it into a predetermined constant voltage and supplies it to the light emitting element 62, and lights the light emitting element 62.

Then, in the aviation indicator lamp 10 configured in this way, the light of the light emitting element 62 to be lit is collected by the second lens 54, incident on the first lens 25, and bent by the first lens 25. The light is emitted from the exit port 35 in a desired emission direction.

FIG. 4 shows an explanatory diagram illustrating the relationship between the lamp body 12 and the adjusting ring 16 and the optical axis a of the light emitting element 62 provided in the lamp body 12.

Light directed from the light emitting element 62 in the direction of the optical axis a passes through the second lens 54 having the same optical axis, and is above the intermediate virtual line b, which is in the middle of the first lens 25 in the vertical direction. It is incident on the incident surface 47 of the first lens 25, and is emitted from the exit surface 48 in a desired emission direction, for example, in the 0 ° to 5 ° direction, preferably in the 0 ° direction (the 0 ° direction is shown in FIG. 4). The lens. At this time, the light directed from the light emitting element 62 toward the optical axis a is bent when it is incident on the incident surface 47 of the first lens 25 and when it is emitted from the exit surface 48, and is emitted in a desired emission direction. To.

The angle at which the light directed from the light emitting element 62 in the direction of the optical axis a is incident on the incident surface 47 of the first lens 25 is such that the lower angle of the light (optical axis a) is smaller than the upper angle. .. The angle emitted from the exit surface 48 of the first lens 25 is such that the lower angle of the light (optical axis a) is smaller than the upper angle.

By the way, in the desired exit direction from the exit port 35, the outer peripheral portion of the bottom surface of the exit groove 20 of the adjustment ring 16 is at the highest position, and the light emitted from the exit port 35 in the desired exit direction is blocked by shading. It becomes a part.

The position where the light directed from the light emitting element 62 in the direction of the optical axis a is bent by the first lens 25 and emitted from the emission surface 48 is on the upper side of the intermediate virtual line b which is the middle in the vertical direction of the emission surface 48. Since it is located above the light-shielding height virtual line c, which is the highest position on the bottom surface of the exit groove 20 of the adjustment ring 16, the light bent in the 0 ° direction by the first lens 25 is also the lamp body 12. The light can be emitted in a desired emission direction without being blocked by the adjustment ring 16. That is, the upper side of the first lens 25 is located above the highest position on the bottom surface of the exit groove 20 of the adjustment ring 16.

Then, for example, since the angle of incidence of the aircraft on the runway is about 3 °, good visibility of the light of the aviation indicator light 10 is ensured for the operator of the aircraft.

Further, since the light of the light emitting element 62 is collected by the second lens 54 provided between the light emitting element 62 and the first lens 25 and incident on the first lens 25, the light of the light emitting element 62 Is efficiently incident on the first lens 25.

Further, since the second lens 54 spreads the light distribution in the left-right direction centered on the optical axis of the second lens 54 more than the light distribution in the up-down direction, the light emitted from the exit port 35 is in the left-right direction. It spreads in the horizontal direction, and good visibility of the light of the aviation indicator light 10 from a wide range in the horizontal direction is ensured.

In addition, if the tires of an aircraft passing over the aviation indicator light 10 or the snowplow of a snowplow that removes snow on the runway collide with the first lens 25 from the outlet 35, the first lens 25 may be damaged. However, since the protruding portion 37 and the protruding portion 21 of the adjusting ring 16 are projected to the outside of the outlet 35, the tire and the snow remover are prevented from colliding with the first lens 25, and the first lens is prevented from colliding with the first lens 25. 25 are protected.

When the projecting portion 37 projects to the outside of the exit port 35 in this way, the light of the light emitting element 62 may be blocked by the projecting portion 37, but the light emitting element 62 emits light on both sides of the projecting portion 37 in the left-right direction. Since it faces 35 (first lens 25), the light of the light emitting element 62 is incident on the first lens 25 without being blocked.

In this case, when the number of protrusions 37 is one (odd number), the number of light emitting elements 62 is an even number such as two, four, six, etc., and the same number is arranged on both sides of the protrusion 37 in the left-right direction. The same amount of light can be taken out from the outlet 35 which is divided into two by one protrusion 37. Further, when the number of protruding portions 37 is two (even numbers), the number of light emitting elements 62 is an odd number such as three or nine, and the same number is arranged on both sides of each protruding portion 37 in the left-right direction, so that two protrusions are formed. The same amount of light can be taken out from each of the exit ports 35 divided into three by the unit 37.

According to the aviation indicator lamp 10 configured in this way, the optical axis a of the light emitting element 62 is in a state of facing upward from the middle in the vertical direction of the first lens 25, so that the first lens 25 The light emitted from the upper side of the lens in a desired emission direction can be emitted without being blocked by the lamp body 12 or the adjusting ring 16, and the light can be efficiently taken out in the desired emission direction.

Further, since the second lens 54 provided between the light emitting element 62 and the first lens 25 can collect the light of the light emitting element 62 and efficiently incident the light on the first lens 25. Light can be efficiently extracted in a desired emission direction.

Further, since the optical axis of the second lens 54 coincides with the optical axis a of the light emitting element 62, the light of the light emitting element 62 can be focused along the optical axis a, and efficiency is achieved in a desired emission direction. Light can be taken out well.

Further, since the second lens 54 has a wider light distribution in the horizontal direction about the optical axis than the light distribution in the vertical direction, a sufficient light irradiation range in the horizontal direction can be secured.

Further, even when the projecting portion 37 projects to the outside of the exit port 35, the light emitting element 62 faces the exit port 35 (first lens 25) on both left and right sides of the projecting portion 37, so that the light emitting element 62 The light can be prevented from being blocked by the protrusion 37, and the light can be efficiently taken out in a desired emission direction.

The first lens 25 does not have to have a ring shape, and may be individually arranged at the outlet 35 of the upper lamp body 23.

Although some 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 implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 Aviation sign light
12 lamps
The first lens, which is the 25 lens
35 Exit
37 Overhang
53 Optical parts
57 Support
62 Light emitting element a Optical axis

Claims (4)

With a lamp with an outlet;
With the lens provided at the outlet;
With the light emitting element provided in the lamp body;
With a support portion that supports the light emitting element so that the optical axis of the light emitting element faces upward from the middle in the vertical direction of the lens;
An aviation indicator light characterized by being equipped with. The aviation indicator lamp according to claim 1, further comprising an optical component that is provided between the light emitting element and the lens and that collects the light of the light emitting element. The aviation indicator lamp according to claim 2, wherein the optical component has a light distribution in the left-right direction centered on an optical axis wider than a light distribution in the up-down direction. The lamp body has a protruding portion that protrudes to the outside of the outlet so as to divide the outlet in the left-right direction.
The aviation indicator lamp according to any one of claims 1 to 3, wherein the light emitting element faces the outlet on both sides of the protruding portion in the left-right direction.

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