Runway embedded flashing device and heat conductive material

Abstract

To provide a novel runway embedded type flash light device that has light weight, a long life and high effective light intensity, and that can switch light intensity, and also has a small power consumption and superior heat dissipation.SOLUTION: A runway embedded type flash light device 1 includes a cylindrical main body 10, a ceiling member 11, light guide members 12, LED flash light sources 13, and a heat conductive member 17. The cylindrical main body 10 can be embedded in a runaway. The ceiling member 11 is arranged at an upper opening part of the cylindrical main body 10 in a state that the cylindrical main body 10 can be exposed from a runway surface. The ceiling member 11 is provided with a window for flash light irradiation. The light guide member 12 can emit flash light from the LED flash light source 13 outward from the window for flash light irradiation. One part of the heat conductive member 17 contacts the LED flash light source 13 and at least a part of the other part of the heat conductive member 17 contacts the ceiling member 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a runway embedded flash device and a heat conductive member. [Background technology]

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

[0003] [Patent Document 1] JP 2000-228103 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, flash devices using xenon flash sources have problems such as being heavy, having a short life span, low effective luminous intensity, not being able to switch between high, medium and low luminous intensities, and consuming a lot of power. In addition, runway embedded flash devices are required to have excellent heat dissipation properties for the heat generated by the flash source.

[0005] Therefore, an object of the present invention is to provide a new runway embedded flash device that is lightweight, has a long life, has high effective luminous intensity, allows switching of 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 flash 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 conductive 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 flash light 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 emission window, The thermally conductive 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 side of the heat pipe positioned on the LED flash light source side. It is characterized by: Effect of the Invention

[0007] The runway embedded flash 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 description of the drawings]

[0008] [Figure 1] FIG. 1 is an exploded perspective view showing a configuration of an example of a runway embedded flash device according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view seen from above showing an example of a cylindrical main body and a ceiling member in the runway embedded flash device of the first embodiment. [Diagram 3] FIG. 3 is a perspective view showing an example of a cylindrical main body and a ceiling member in the runway embedded flash device of the first embodiment, as viewed from below. [Figure 4]FIG. 4 is a perspective view seen from below showing an example of a cylindrical main body, a ceiling member, and a heat conductive member in the runway embedded flash device of the first embodiment. [Diagram 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 a configuration of an example of a runway embedded flash device of 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 a bottom cover member in the runway embedded flash device of the second embodiment. [Figure 10] FIG. 10 is a schematic perspective view showing a configuration of an example 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 PREFERRED EMBODIMENTS

[0009] Next, an embodiment 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 embodiment. In Figs. 1 to 12, the same parts are given the same symbols. The explanations of the embodiments can be mutually incorporated. In addition, in the drawings, for the convenience of explanation, the structure of each part is shown in an appropriately simplified manner, and the dimensional ratios of each part may be shown diagrammatically, different from the actual ones.

[0010] [Embodiment 1] 1 is an exploded perspective view showing an example of the configuration of a runway embedded flash device of 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 flash light source 13, and a heat conductive member 17.

[0011] The cylindrical main body 10 can be embedded in the runway 2, as described later in the fourth embodiment with reference to Fig. 10. The cylindrical main body 10 may be, for example, a cylinder as shown in Fig. 1, or may be a cylinder other than a cylinder, 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 disposed at the upper opening of the cylindrical body 10 in a state in which it can be exposed to the runway surface.

[0013] The cylindrical 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, titanium alloy castings, etc., with aluminum castings and titanium castings being preferred because they are lightweight, and aluminum castings being particularly preferred because they are inexpensive. Even when the cylindrical body 10 and the ceiling member 11 are separate members, the cylindrical body 10 and the ceiling member 11 may be, as in the case of the integrally molded product, for example, aluminum castings, titanium castings, aluminum alloy castings, titanium alloy castings, etc.

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

[0015] The ceiling member 11 may, for example, have 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 light irradiation window, and the lower ceiling portion 11b is positioned on the irradiation direction side of the flash light 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 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 flash device 1 of this embodiment further includes, for example, a fixing member 15, which is disposed on the outer periphery of the ceiling member 11, and may have a screw hole for passing a screw for fixing to the runway 2. The fixing member 15 may have, for example, a tapered shape with an outer surface inclined so that the thickness becomes thinner toward the outer periphery. The ceiling member 11 and the fixing member 15 may be, for example, separate independent members or may be integrally molded products. When the ceiling member 11 and the fixing member 15 are separate members, the fixing member 15 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. At least one of the ceiling member 11 and the fixing member 15 may have, for example, a hole for pulling up the runway embedded flash device 1 with a tool.

[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 example of cylindrical main body 10 and ceiling member 11 as viewed from below. 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 LED flashlight source 13 at the lower portion of the flashlight emission window. Light-guiding member 12 allows the flash of light emitted from LED flashlight source 13 to be irradiated to the outside from the flashlight emission window.

[0019] An example of the LED flashlight source 13 is an LED module. For example, as shown in Fig. 1, the LED flashlight source 13 includes a substrate 13a and an LED 13b, and the LED 13b is arranged on the substrate 13a. In the example shown in Fig. 1, the number of the LED flashlight sources 13 is two, but the number of the LED flashlight 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 according to the desired optical characteristics. Fig. 1 shows an example in which 72 LEDs 13b are mounted on the substrate 13a in two rows and columns of 4 x 9 = 36 LEDs.

[0021] The shape of the LED 13b is not particularly limited, and is generally a square or a rectangle. The size of the LED 13b is not particularly limited, and in the case of a 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, and in the case of a rectangle, 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. On the mounting surface of the LED 13b of the substrate 13a, the width between adjacent LEDs is, for example, 0.2 to 0.5 mm.

[0022] The LED flashlight source 13 may include a lens member 13c, as shown in the partially enlarged perspective view of FIG. 5 and the cross-sectional view of FIG. 6, and the lens member 13c is disposed above the LED 13b. The lens member 13c may be a lens member that provides a uniform illuminance distribution on the surface irradiated with the flash of light from the LED 13b. Examples of the lens member 13c include a fly-eye lens and an integrator lens. For example, as shown in FIG. 6, the lens member 13c may be divided into two or more pieces so that it is not too large, thereby further reducing the load on the lens member 13c and preventing breakage. It is preferable that the lens member 13c is not too small so that there is no loss in extracting the irradiated flash of light.

[0023] The heat conductive member 17 is disposed within the cylindrical body 10, with a portion of the heat conductive member 17 in contact with the LED flash light source 13, and at least a portion of the other portion of the heat conductive 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 conductive member 17, and dissipated to the outside of the device 1. The runway embedded type flash device 1 of this embodiment has superior heat dissipation properties compared to dissipating heat inside the device 1.

[0024] A portion of the heat conductive member 17 is in contact with the surface of the substrate 13a opposite to the side where the LED 13b is mounted, as shown in FIG. 1. The other portion of the heat conductive member 17 may be in contact with any portion of the ceiling member 11 as long as at least a portion of the other portion is in contact with the ceiling member 11. For example, as shown in FIG. 1, at least a portion of the other portion of the heat conductive member 17 may be in contact with the flash irradiation side of the flash irradiation window in the ceiling member 11. In this embodiment, for example, at least a portion of the other portion of the heat conductive member 17 may be in contact with the lower ceiling portion 11b. In the embodiment shown in FIG. 1, the heat generated by the LED flash light source 13 can be transferred to the flash irradiation side of the flash irradiation window via the heat conductive member 17, and for example, accumulated snow that blocks the flash irradiation on an aircraft runway in a cold region can be melted. 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 conductive member 17 in addition to the portion for arranging LED flashlight source 13 described above.

[0025] The heat conductive member 17 may be, for example, a plate-shaped heat sink, a heat pipe, etc., and may be self-made or a commercially available product. The plate-shaped heat sink may be made of, for example, copper, aluminum, etc. The heat pipe may be made of, for example, any known heat conductive material, and may be, for example, a metal. The metal may be, for example, aluminum and its alloys, magnesium and its alloys, iron and its alloys, copper and its alloys, titanium and its alloys, molybdenum and its alloys, tungsten and its alloys, etc. FIG. 4 is a perspective view from below showing an example of a cylindrical body, a ceiling member, and a heat conductive member in the runway embedded flash device of this embodiment. The heat conductive 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 located on the LED flash light source 13 side and the other end located on the lower ceiling portion 11b side, attached to the plate-shaped heat sink 17a. Note that, although 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) is shown in Fig. 4, 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 in the cutout, and soldering the cutout to the plate-shaped heat sink 17a.

[0026] As shown in FIG. 4, for example, the heat pipe 17b may have a first straight portion extending perpendicular to the irradiation direction (arrow X 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 may include the first straight portion and the other end side may include the second straight portion.

[0027] From the runway embedded flash device 1 of this embodiment, it is preferable that an upward flash be emitted 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 runway embedded flash device 1 of this embodiment weighs, 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, according to this embodiment, it is possible to 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, according to this embodiment, it is possible to provide a runway embedded flash device with high effective luminous intensity.

[0031] A flash device using a xenon flash light source cannot switch the luminance between high, medium, low, etc., whereas the runway embedded flash device 1 of this embodiment has a high effective luminance as described above, and therefore can switch between luminances such as 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 that can switch luminance. The high luminance is used, for example, during the day when visibility is poor due to fog, rain, etc., the low luminance is used, for example, at night, and the medium luminance 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). Thus, according to this embodiment, it is possible to 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 the material for the bottom cover member 16 include aluminum, titanium, an aluminum alloy, a titanium alloy, or a casting 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, by attaching the bottom cover member 16 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 an example of the configuration of a runway of this embodiment. Although shown in a simplified schematic manner in Fig. 10, the runway 2 is one in which the runway-embedded flash device 1 of embodiment 1 or 2 is embedded with the ceiling member 11 exposed.

[0038] Although the present invention has been described above with reference to the embodiment, the present invention is not limited to the above embodiment. 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 may be described as, but is 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 conductive 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 flash light 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 emission window, the heat conducting member is disposed within the cylindrical body; a portion of the heat conductive 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 embedded 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 light irradiation side relative to the flash light irradiation window. 4. A runway-mounted flash 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 an illumination distribution of a flash of light emitted from the LED uniform on an illumination surface, A portion of the heat conductive member is in contact with the surface of the substrate opposite to the LED mounting surface. 3. A runway-mounted flash device as described in claim 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 flashlight irradiation window, At least a part of the other portion of the heat conducting member is in contact with the lower ceiling portion. 4. A runway embedded flash device according to any one of claims 1 to 3. (Appendix 5) Further, the 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 in a vertical direction of the outer surface of the lower ceiling portion. A runway-mounted flash device as described in Appendix 4. (Appendix 6) The thermally conductive member includes at least one of a plate-shaped heat sink and a heat pipe. 6. A runway-mounted flash device according to any one of claims 1 to 5. (Appendix 7) the thermal conduction member includes a plate-shaped heat sink and a heat pipe; A portion of one surface of the plate-shaped heat sink is in contact with the LED flashlight source, At least a part of the other portion of the 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 side positioned on the LED flashlight source side and the other end side positioned on the lower ceiling side. 6. A runway-mounted flash device as described in paragraph 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 as a whole, and the one end side includes the first straight portion and the other end side includes the second straight portion. 7. A runway-mounted flash device as described in appended note 7. (Appendix 9) Further, the fixing member is included, the fixing member is disposed on an outer periphery of the ceiling member, The fixing member is provided with a screw hole through which a screw for fixing to the runway can be passed. 9. A runway embedded flash device according to any one of claims 1 to 8. (Appendix 10) The ceiling member and the fixing member are integrally molded. 10. A runway-mounted flash device as described in paragraph 9. (Appendix 11) The cylindrical body and the ceiling member are integrally molded. 11. A runway embedded flash device according to any one of claims 1 to 10. (Appendix 12) The number of the flashlight irradiation windows is two or more, and the light guide member is disposed in each of the flashlight irradiation windows. 12. A runway embedded flash 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 embedded flash device according to any one of claims 1 to 12. (Appendix 14) The bottom cover member includes a cable gland and an external earth terminal. 14. A runway-mounted flash device as described in claim 13. (Appendix 15) A thermally conductive member for use 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 is included. 16. The thermally conductive member according to claim 15. (Appendix 17) 15. A runway having a runway-embedded flash 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 embedded flash 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 embedded flashing devices 2 Runway 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 earth 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 conductive 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 flash light 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 emission window, The thermally conductive 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 side of the heat pipe positioned on the LED flash light source side. Runway embedded 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.

2. The runway embedded flash 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 flashlight 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. A runway embedded flash device according to claim 2.

4. 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 as a whole, and the one end side includes the first straight portion and the other end side includes the second straight portion.

2. The runway embedded flash device according to claim 1.

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

Images