Runway embedded flashing device and heat conductive material

Abstract

To provide a novel runway-embedded flash light device that is lightweight, long in life, high in effective luminous intensity, capable of switching light intensity, small in power consumption, and superior in heat dissipation.SOLUTION: A runway-embedded flash light device 1 includes a cylindrical body 10, a ceiling member 11, a light guide member 12, an LED flash light source 13, and a heat conductive member 17. The cylindrical body 10 can be embedded in a runway 2, the ceiling member 11 is arranged at an upper opening part of the cylindrical body 10 so that it can be exposed to a runway surface, and the light guide member 12 is arranged at a flash light irradiation window. The LED flash light source 13 is so arranged as to irradiate the light guide member 12 arranged at the flash light irradiation window with flash light, the light guide member 12 can emit the flash light, emitted by the LED flash light source 13, to the outside through the flash light irradiation window, and the heat conductive member 17 is arranged in the cylindrical body 10 to come into contact with the LED flash light source 13, at least a part of the other part of the heat conductive member 17 being in contact with the ceiling member 11.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a runway-embedded flashing device and a heat-conducting member. [Background technology]

[0002] Conventionally, marker lights that emit beacon light have been buried under the road surface as guide signs for aviation runways (see, for example, Patent Document 1). These recessed marker lights buried under the road surface sometimes use discharge lamps containing xenon as a flashing light source. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-228103 Summary of the Invention [Problem to be solved by the invention]

[0004] However, flashing devices using xenon flashing light sources have problems such as being heavy, having a short lifespan, low effective luminous intensity, not being able to switch between high, medium and low luminous intensities, and consuming large amounts of power. Furthermore, runway-mounted flashing devices are required to have excellent heat dissipation capabilities for the heat generated by the flashing light source.

[0005] Therefore, an object of the present invention is to provide a new runway-mounted flashing device that is lightweight, has a long life, has high effective luminous intensity, is switchable in luminous intensity, consumes little power, and has excellent heat dissipation properties. [Means for solving the problem]

[0006] In order to achieve the above object, the runway embedded flashing device of the present invention comprises: The lamp includes a cylindrical body, a ceiling member, a light guide member, an LED flashlight source, and a heat conduction member. The cylindrical body is embeddable in a runway; the ceiling member is disposed at an upper opening of the cylindrical main body in a state in which the ceiling member can be exposed to a runway surface when the cylindrical main body is embedded in the runway, The ceiling member is provided with a window for flashlight irradiation, the light guide member is disposed in the flashlight irradiation window, the LED flashlight source is disposed within the cylindrical body in a state capable of emitting a flashlight toward the light-guiding member disposed in the flashlight emission window; the light guide member allows the flash emitted from the LED flashlight source to be emitted to the outside through the flashlight irradiation window, the heat conduction member includes a plate-shaped heat sink and a heat pipe, and is disposed within the cylindrical body; a portion of the plate-shaped heat sink contacts the LED flash light source, and at least a portion of another portion of the plate-shaped heat sink contacts the ceiling member; The heat pipe is attached so that the entire heat pipe is in contact with the plate-shaped heat sink, with one end of the heat pipe positioned on the LED flash light source side. It is characterized by: [Effects of the Invention]

[0007] The runway-embedded flashing device of the present invention is lightweight, has a long life, has high effective luminous intensity, is switchable in luminous intensity, consumes little power, and has excellent heat dissipation properties. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an exploded perspective view showing the configuration of an example of a runway-embedded flash device according to the first embodiment. [Figure 2] FIG. 2 is a perspective view from above showing an example of the cylindrical main body and ceiling member of the runway-embedded flash device of the first embodiment. [Figure 3] FIG. 3 is a perspective view from below showing an example of the cylindrical main body and ceiling member of the runway-embedded flash device of the first embodiment. [Figure 4]FIG. 4 is a perspective view from below showing an example of the cylindrical main body, ceiling member, and heat conduction member of the runway-embedded flash device of the first embodiment. [Figure 5] FIG. 5 is a partially enlarged perspective view showing an example of an LED flashlight source in the runway-embedded flashlight device of the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing an example of an LED flashlight source in the runway-embedded flashlight device of the first embodiment. [Figure 7] FIG. 7 is an exploded perspective view showing an example of the configuration of a runway-embedded flash device according to the second embodiment. [Figure 8] FIG. 8 is a perspective view of the runway-embedded flash device shown in FIG. 7, seen from below. [Figure 9] FIG. 9 is a side view showing an example of the bottom cover member of the runway-embedded flash device of the second embodiment. [Figure 10] FIG. 10 is a schematic perspective view showing an example of the configuration of a runway according to the fourth embodiment. [Figure 11] FIG. 11 is a schematic side view illustrating flash light irradiation in the runway-embedded flash device of the first embodiment. [Figure 12] FIG. 12 is a side view showing an example of a light-guiding member and an LED flashlight source inside the runway-embedded flashlight device shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Next, embodiments of the present invention will be described with reference to Figs. 1 to 12. The present invention is not limited or restricted by the following embodiments. In Figs. 1 to 12, the same parts are denoted by the same reference numerals. The descriptions of the embodiments can be mutually incorporated. In addition, for the sake of convenience, the structures of the parts are shown in simplified form in the drawings, and the dimensional ratios of the parts may be shown schematically and different from the actual ones.

[0010] [Embodiment 1] 1 is an exploded perspective view showing the configuration of an example of a runway-embedded flash device according to this embodiment. As shown in FIG. 1, the runway-embedded flash device 1 includes a cylindrical main body 10, a ceiling member 11, a light-guiding member 12, an LED flashlight source 13, and a heat-conducting member 17.

[0011] The cylindrical main body 10 can be embedded in the runway 2, as will be described later in the fourth embodiment with reference to Fig. 10. The cylindrical main body 10 may be cylindrical, for example, as shown in Fig. 1, or may have a cylindrical shape other than a cylindrical shape, such as an elliptical cylinder or a rectangular cylinder.

[0012] When the cylindrical body 10 is embedded in the runway 2, the ceiling member 11 is arranged at the upper opening of the cylindrical body 10 in a state where it can be exposed to the runway surface.

[0013] The cylindrical main body 10 and the ceiling member 11 may be separate and independent members as shown in Fig. 1, or may be an integrally molded product as shown in Fig. 2. Examples of the integrally molded product include aluminum castings, titanium castings, aluminum alloy castings, and titanium alloy castings, with aluminum castings and titanium castings being preferred because of their light weight, and aluminum castings being particularly preferred because of their low cost. Even when the cylindrical main body 10 and the ceiling member 11 are separate members, the cylindrical main body 10 and the ceiling member 11 can be, as in the case of the integrally molded product, examples of the cylindrical main body 10 and the ceiling member 11 include aluminum castings, titanium castings, aluminum alloy castings, and titanium alloy castings.

[0014] A flashlight window is provided in the ceiling member 11, and a light-guiding member 12 is disposed in the flashlight window. In the runway-embedded flashlight device 1 of this embodiment, for example, there may be two or more flashlight windows, and a light-guiding member 12 may be disposed in each of the flashlight windows. If there are two or more light-guiding members 12, the load on the light-guiding member 12 can be further reduced, and damage can be prevented. For example, as shown in FIG. 1, the flashlight window and the light-guiding member 12 may be divided into two or more pieces by a reinforcing plate member 14, which will be described later. An example of the light-guiding member 12 is a prism lens. The material of the prism lens is not particularly limited, but may be, for example, glass.

[0015] The ceiling member 11 may, for example, include an upper ceiling portion 11a and a lower ceiling portion 11b, and may have a stepped structure in which the upper ceiling portion 11a is positioned rearward of the irradiation direction of the flash irradiation window, and the lower ceiling portion 11b is positioned toward the irradiation direction of the flash irradiation window.

[0016] The runway-embedded flash device 1 of this embodiment may further include, for example, a reinforcing plate member 14, which may be arranged on the outer surface of the lower ceiling portion 11b in a state of standing upright in the vertical direction of the outer surface of the lower ceiling portion 11b. The ceiling member 11 and the reinforcing plate member 14 may be, for example, separate and independent members, or may be an integrally molded product. When the ceiling member 11 and the reinforcing plate member 14 are separate members, the reinforcing plate member 14 may be, for example, an aluminum casting, a titanium casting, an aluminum alloy casting, a titanium alloy casting, or the like, as in the case of the integrally molded product.

[0017] The runway-embedded flashlight device 1 of this embodiment may further include a fixing member 15, for example. The fixing member 15 is disposed on the outer periphery of the ceiling member 11, and may be provided with screw holes for passing screws for fixing the runway 2. The fixing member 15 may have a tapered outer surface that becomes thinner toward the outer periphery. The ceiling member 11 and the fixing member 15 may be separate, independent members, or may be a single-piece molded product. When the ceiling member 11 and the fixing member 15 are separate members, the fixing member 15 may be made of, for example, aluminum casting, titanium casting, aluminum alloy casting, titanium alloy casting, or the like, as in the case of the single-piece molded product. At least one of the ceiling member 11 and the fixing member 15 may have a hole for lifting the runway-embedded flashlight device 1 with a tool, for example.

[0018] LED flashlight source 13 is disposed within cylindrical main body 10 in a state in which it can emit a flash of light toward light-guiding member 12 disposed in the flashlight emission window. Fig. 3 shows an exemplary perspective view of cylindrical main body 10 and ceiling member 11 from below. For example, as shown in Fig. 3, a portion for arranging LED flashlight source 13 may be provided on the inner surface of ceiling member 11 (the surface on the cylindrical main body 10 side) below the flashlight emission window. Light-guiding member 12 allows the flash of light emitted from LED flashlight source 13 to be emitted to the outside from the flashlight emission window.

[0019] An example of the LED flash light source 13 is an LED module. For example, as shown in Fig. 1, the LED flash light source 13 includes a substrate 13a and LEDs 13b, with the LEDs 13b arranged on the substrate 13a. In the example shown in Fig. 1, the number of LED flash light sources 13 is two, but the number of LED flash light sources 13 may be one, or three or more.

[0020] The conditions for mounting the LEDs 13b on the substrate 13a are not particularly limited and can be set appropriately depending on the desired optical characteristics. Figure 1 shows an example in which 72 LEDs 13b are mounted on the substrate 13a, with two rows and columns of 4 × 9 = 36 LEDs.

[0021] The shape of the LEDs 13b is not particularly limited, and is generally square or rectangular. The size of the LEDs 13b is also not particularly limited, and if they are square, the length of one side is, for example, 1.8 to 2.2 mm, 3 to 3.5 mm, or 4 to 5.3 mm. If they are rectangular, the length of the short side is, for example, the same as the length of the square, and the ratio of the short side to the long side is, for example, 1:1 to 3. The width between adjacent LEDs on the mounting surface of the substrate 13a for the LEDs 13b is, for example, 0.2 to 0.5 mm.

[0022] As shown in the partially enlarged perspective view of FIG. 5 and the cross-sectional view of FIG. 6, the LED flashlight source 13 may include a lens member 13c disposed above the LED 13b, which provides a uniform illuminance distribution on the surface illuminated by the flashlight emitted from the LED 13b. Examples of the lens member 13c include a fly's eye lens and an integrator lens. For example, as shown in FIG. 6, dividing the lens member 13c into two or more pieces to prevent it from becoming too large can further reduce the load on the lens member 13c and prevent breakage. It is preferable that the lens member 13c not be too small to avoid loss of light emitted from the flashlight.

[0023] The heat conducting member 17 is disposed inside the cylindrical body 10, with a portion of the heat conducting member 17 in contact with the LED flash light source 13 and at least a portion of the other portion of the heat conducting member 17 in contact with the ceiling member 11. This allows the heat generated by the LED flash light source 13 to be conducted to the ceiling member 11 via the heat conducting member 17 and dissipated to the outside of the device 1. The runway-embedded flash light device 1 of this embodiment has better heat dissipation properties than dissipating heat inside the device 1.

[0024] As shown in FIG. 1, for example, a portion of heat conduction member 17 is in contact with the surface of substrate 13a opposite the side on which LED 13b is mounted. The other portion of heat conduction member 17 may be in contact with any portion of ceiling member 11 as long as at least a portion of it is in contact with ceiling member 11. For example, as shown in FIG. 1, at least a portion of the other portion of heat conduction member 17 may be in contact with the flash irradiation side of ceiling member 11 relative to the flash irradiation window. In this embodiment, for example, at least a portion of the other portion of heat conduction member 17 may be in contact with lower ceiling section 11b. In the embodiment shown in FIG. 1, heat generated by LED flashlight source 13 can be transferred via heat conduction member 17 to the flash irradiation side relative to the flash irradiation window, which can melt accumulated snow that blocks the flash irradiation, for example, on an airplane runway in a cold region. For example, as shown in FIG. 3, the inner surface of ceiling member 11 (the surface on the cylindrical main body 10 side) may be provided with a portion for arranging heat conduction member 17 in addition to the portion for arranging LED flashlight source 13 described above.

[0025] Examples of the thermally conductive member 17 include a plate-shaped heat sink and a heat pipe, and these may be homemade or commercially available. Examples of the material for the plate-shaped heat sink include copper and aluminum. The material for the heat pipe is not particularly limited and may be any known thermally conductive material, specifically metal. Examples of the metal include aluminum and its alloys, magnesium and its alloys, iron and its alloys, copper and its alloys, titanium and its alloys, molybdenum and its alloys, and tungsten and its alloys. Figure 4 is a perspective view from below showing an example of the cylindrical body, ceiling member, and thermally conductive member in a runway-embedded flashlight device of this embodiment. The thermal conduction member 17 may include, for example, a plate-shaped heat sink 17a and a heat pipe 17b, with a portion of one surface of the plate-shaped heat sink 17a in contact with the LED flash light source 13, at least a portion of the other surface of the plate-shaped heat sink 17a in contact with the lower ceiling portion 11b, and one end of the heat pipe 17b positioned on the LED flash light source 13 side and the other end positioned on the lower ceiling portion 11b side. Note that, although Fig. 4 shows an example in which the heat pipe 17b is attached to the other surface of the plate-shaped heat sink 17a (the surface opposite to the surface (one surface) in contact with the LED flash light source 13), the heat pipe 17b may be attached to one surface of the plate-shaped heat sink 17a, or may be attached to both the other surface and one surface of the plate-shaped heat sink 17b. In the embodiment shown in FIG. 4, the heat pipe 17b may be disposed by, for example, cutting out the plate-shaped heat sink 17a in the thickness direction, embedding the heat pipe 17b, and soldering it thereto.

[0026] For example, as shown in FIG. 4, the heat pipe 17b may have a first straight portion extending perpendicular to the irradiation direction (direction of arrow X) and a second straight portion extending in the irradiation direction, and the first straight portion and the second straight portion may be joined to form an L-shape overall, with one end side including the first straight portion and the other end side including the second straight portion.

[0027] The runway-embedded flash device 1 of this embodiment preferably emits an upward flash at an angle α of about 3° with respect to the direction parallel to the runway surface, as shown in Fig. 11. An example of the light-guiding member 12 and LED flash light source 13 inside the runway-embedded flash device 1 shown in Fig. 11 is shown in Fig. 12.

[0028] While a flash device using a xenon flash light source weighs 65 kg or less, specifically about 40 kg, the weight of the runway-embedded flash device 1 of this embodiment is, for example, 18 kg or less, specifically about 11 kg. In this way, this embodiment can provide a lightweight runway-embedded flash device.

[0029] While the lifespan of a flash device using a xenon flash light source is about 500 hours, the runway-embedded flash device 1 of this embodiment can be used, for example, indefinitely. In this way, this embodiment can provide a long-life runway-embedded flash device.

[0030] While the effective luminous intensity of a flash device using a xenon flash light source is 1000 cd or more, specifically about 1200 cd, the effective luminous intensity of the runway-embedded flash device 1 of this embodiment is, for example, 6000 cd or more, specifically about 7000 cd. In this way, this embodiment can provide a runway-embedded flash device with high effective luminous intensity.

[0031] Whereas flash devices using xenon flashlight sources cannot switch the luminous intensity between high, medium, and low, as described above, the runway-embedded flash device 1 of this embodiment has a high effective luminous intensity, and therefore can switch the luminous intensity between, for example, high (e.g., 6000 cd or more), medium (e.g., 1000 cd or more), and low (e.g., 250 cd or more). In this way, this embodiment can provide a runway-embedded flash device with switchable luminous intensities. The high luminous intensity is used, for example, during the day when visibility is poor due to fog or rain, the low luminous intensity is used, for example, at night, and the medium luminous intensity is used, for example, in the evening.

[0032] While the power consumption of a flash device using a xenon flash light source is about 500 W, the power consumption of the runway-embedded flash device 1 of this embodiment is, for example, about 80 W (maximum 114 W at high light intensity, 31 W at medium light intensity, and 24 W at low light intensity). In this way, this embodiment can provide a runway-embedded flash device with low power consumption.

[0033] [Embodiment 2] Fig. 7 is an exploded perspective view showing the configuration of an example of a runway-embedded flash device of this embodiment, and Fig. 8 is a perspective view from below of the runway-embedded flash device shown in Fig. 7. As shown in Figs. 7 and 8, the runway-embedded flash device 1 of this embodiment is similar to the runway-embedded flash device of Embodiment 1, except that it further includes a bottom cover member 16.

[0034] The bottom cover member 16 is disposed in a state where it closes the lower opening of the cylindrical main body 10. Examples of materials for the bottom cover member 16 include aluminum, titanium, aluminum alloys, titanium alloys, and castings thereof.

[0035] Fig. 9 shows a side view of an example of the bottom cover member 16. For example, as shown in Fig. 9, the bottom cover member 16 may include a cable gland 16a and an external earth terminal 16b. Furthermore, if the bottom cover member 16 is attached to at least one of the cylindrical body 10 and the LED flash light source 13 with, for example, a screw 16c and an O-ring (not shown), the runway-embedded flash device 1 can be made waterproof.

[0036] [Embodiment 3] According to the present invention, it is possible to provide a heat conductive member 17 for use in the runway-embedded flash device 1 of embodiment 1 or 2. The heat conductive member 17 of the present invention may include at least one of a plate-shaped heat sink 17a and a heat pipe 17b. The explanations of embodiments 1 and 2 can be applied to the heat conductive member 17 of the present invention.

[0037] [Embodiment 4] Fig. 10 is a schematic perspective view showing the configuration of an example of a runway of this embodiment. Although Fig. 10 shows a simplified schematic view, the runway 2 is formed by embedding the runway-embedded flash device 1 of embodiment 1 or 2 in the runway, with the ceiling member 11 exposed.

[0038] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above-described embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

[0039] A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes. (Appendix 1) The lamp includes a cylindrical body, a ceiling member, a light guide member, an LED flashlight source, and a heat conduction member. The cylindrical body is embeddable in a runway; the ceiling member is disposed at an upper opening of the cylindrical main body in a state in which the ceiling member can be exposed to a runway surface when the cylindrical main body is embedded in the runway, The ceiling member is provided with a window for flashlight irradiation, the light guide member is disposed in the flashlight irradiation window, the LED flashlight source is disposed within the cylindrical body in a state capable of emitting a flashlight toward the light-guiding member disposed in the flashlight emission window; the light guide member allows the flash emitted from the LED flashlight source to be emitted to the outside through the flashlight irradiation window, the heat conducting member is disposed within the cylindrical body; a portion of the heat conducting member contacts the LED flashlight source; At least a part of the other portion of the heat conducting member is in contact with the ceiling member. Runway-mounted flashing device. (Appendix 2) At least a part of the other portion of the heat conduction member is in contact with the ceiling member on the flash irradiation side of the flash irradiation window. A runway-mounted flashing device as described in Appendix 1. (Appendix 3) the LED flashlight source includes a substrate, an LED, and a lens member; The LED is disposed on the substrate; The lens member is disposed above the LED, the lens member is a lens member that makes the illumination distribution of the flash of light emitted from the LED uniform on the illumination surface, A portion of the heat conduction member is in contact with the surface of the substrate opposite to the side on which the LED is mounted. 3. A runway-mounted flashing device as described in paragraph 1 or 2. (Appendix 4) the ceiling member includes an upper ceiling portion and a lower ceiling portion, the upper ceiling portion is disposed rearward of the direction of irradiation of the flashlight irradiation window, the lower ceiling portion is disposed on the irradiation direction side of the flash irradiation window, At least a part of the other portion of the heat conduction member is in contact with the lower ceiling portion. 4. A runway-mounted flashing device according to any one of claims 1 to 3. (Appendix 5) Further, a reinforcing plate member is included, The reinforcing plate member is disposed on the outer surface of the lower ceiling portion in a state of standing upright in a direction perpendicular to the outer surface of the lower ceiling portion. A runway-mounted flashing device as described in Appendix 4. (Appendix 6) The heat conducting member includes at least one of a plate-shaped heat sink and a heat pipe. 6. A runway-mounted flashing device according to any one of clauses 1 to 5. (Appendix 7) the heat conducting member includes a plate-shaped heat sink and a heat pipe; a portion of one surface of the plate-shaped heat sink contacts the LED flashlight source; At least a part of the other portion of one surface of the plate-shaped heat sink is in contact with the lower ceiling portion, The heat pipe is attached to the plate-shaped heat sink with one end thereof positioned on the LED flashlight source side and the other end thereof positioned on the lower ceiling side. A runway-mounted flashing device as described in Appendix 6. (Appendix 8) The heat pipe has a first straight portion extending perpendicular to the irradiation direction and a second straight portion extending in the irradiation direction, the first straight portion and the second straight portion are joined to form an L-shape overall, and the one end side includes the first straight portion and the other end side includes the second straight portion. A runway-mounted flashing device as described in Appendix 7. (Appendix 9) Further, the fixing member is included, the fixing member is disposed on the outer periphery of the ceiling member, The fixing member is provided with a screw hole through which a screw for fixing to the runway is passed. 9. A runway-mounted flashing device according to any one of clauses 1 to 8. (Appendix 10) The ceiling member and the fixing member are integrally molded. A runway-mounted flashing device as described in Appendix 9. (Appendix 11) The cylindrical body and the ceiling member are integrally molded. 11. A runway-mounted flashing device according to any one of claims 1 to 10. (Appendix 12) There are two or more flashlight irradiation windows, and the light guide member is disposed in each of the flashlight irradiation windows. 12. A runway-mounted flashing device according to any one of claims 1 to 11. (Appendix 13) Further, a bottom cover member is included, The bottom cover member is disposed in a state where it closes the lower opening of the cylindrical body. 13. A runway-mounted flashing device according to any one of clauses 1 to 12. (Appendix 14) The bottom cover member includes a cable gland and an external earth terminal. 14. A runway-mounted flashing device as described in Clause 13. (Appendix 15) A thermally conductive member used in a runway-embedded flash device according to any one of appendixes 1 to 14. (Appendix 16) At least one of a plate-shaped heat sink and a heat pipe 16. The thermally conductive member according to claim 15. (Appendix 17) A runway having a runway-mounted flashing device embedded therein as described in any one of appendixes 1 to 14. [Industrial Applicability]

[0040] According to the present invention, it is possible to provide a new runway-mounted flashing device that is lightweight, has a long life, has high effective luminous intensity, is switchable in luminous intensity, consumes little power, and has excellent heat dissipation properties. [Explanation of symbols]

[0041] 1. Runway-mounted flashing devices 2 runways 10 Cylindrical body 11 Ceiling materials 11a Upper ceiling 11b Lower ceiling 12 Light guide member 13 LED flash light source 13a substrate 13b LED 13c Lens material 14 Reinforcement plate member 15 Fixing member 16 Bottom cover member 16a cable gland 16b External ground terminal 16c screw 17 Thermal Conductive Materials 17a Plate-shaped heat sink 17b Heat pipe

Claims

1. The lamp includes a cylindrical body, a ceiling member, a light guide member, an LED flashlight source, and a heat conduction member, The cylindrical body is embeddable in a runway; the ceiling member is disposed at an upper opening of the cylindrical main body in a state in which the ceiling member can be exposed to a runway surface when the cylindrical main body is embedded in the runway, The ceiling member is provided with a window for flashlight irradiation, the light guide member is disposed in the flashlight irradiation window, the LED flashlight source is disposed within the cylindrical body in a state capable of emitting a flashlight toward the light-guiding member disposed in the flashlight emission window, the light guide member allows the flash of light emitted from the LED flashlight source to be emitted to the outside through the flashlight irradiation window, the heat conduction member includes a plate-shaped heat sink and a heat pipe, and is disposed within the cylindrical body; a portion of the plate-shaped heat sink contacts the LED flash light source, and at least a portion of another portion of the plate-shaped heat sink contacts the ceiling member; The heat pipe is attached so that the entire heat pipe is embedded in the plate-shaped heat sink with one end thereof positioned on the LED flash light source side. Runway-mounted flashing device.

2. At least a part of the other portion of the plate-shaped heat sink is in contact with the ceiling member on the flash irradiation side of the flash irradiation window. The runway-mounted flashing device according to claim 1.

3. the ceiling member includes an upper ceiling portion and a lower ceiling portion, the upper ceiling portion is disposed rearward of the direction of irradiation of the flashlight irradiation window, the lower ceiling portion is disposed on the irradiation direction side of the flash irradiation window, At least a part of the other portion of the plate-shaped heat sink is in contact with the lower ceiling portion.

3. The runway-mounted flashing device according to claim 2.

4. The heat pipe has a first linear portion extending perpendicular to the irradiation direction and a second linear portion extending in the irradiation direction, the first linear portion and the second linear portion are joined to form an L-shape overall, and the one end side includes the first linear portion and the other end side includes the second linear portion. The runway-mounted flashing device according to claim 1.

5. A thermally conductive member used in the runway-embedded flash device according to claim 1, comprising a plate-shaped heat sink and a heat pipe.

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