Runway-embedded flash light device and heat conductive member

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 flash device and a heat conduction member.

Background Art

[0002] Conventionally, as a guiding sign for an airport runway, a marker lamp that irradiates marker light has been buried under the road surface (see, for example, Patent Document 1). In the embedded marker lamp buried under the road surface, a discharge lamp filled with xenon may be used as a flash light source.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, a flash device using a xenon flash light source has problems such as being heavy, having a short lifespan, having a low effective luminous intensity, being unable to switch the luminous intensity such as high, medium, and low, and having a large power consumption. In addition, a runway-embedded flash device is required to have excellent heat dissipation of the heat generated by the flash light source.

[0005] Therefore, an object of the present invention is to provide a new runway-embedded flash device that is light, has a long lifespan, has a high effective luminous intensity, can switch the luminous intensity, has a small power consumption, and has excellent heat dissipation.

Means for Solving the Problems

[0006] To achieve the above object, the runway-embedded flash device of the present invention includes a cylindrical main body, a ceiling member, a light guide member, an LED flash light source, and a heat conduction member, the cylindrical main body is embeddable in a runway, When the cylindrical body is embedded in the runway, the ceiling member is disposed at the upper opening of the cylindrical body in a state where it can be exposed on the runway surface. The ceiling member is provided with a window for flash irradiation. The light guide member is disposed at the window for flash irradiation. The LED flash light source is disposed in the cylindrical body in a state where it can irradiate a flash toward the light guide member disposed at the window for flash irradiation. The flash irradiated from the LED flash light source can be irradiated from the window for flash irradiation to the outside by the light guide member. The heat conduction member includes a plate-shaped heat sink and a heat pipe, and is disposed in the cylindrical body. A part of the plate-shaped heat sink is in contact with the LED flash light source, and at least a part of the other part of the plate-shaped heat sink is in contact with the ceiling member. One end side of the heat pipe is located on the LED flash light source side, and the entire heat pipe is attached so as to be in contact with the plate-shaped heat sink. It is characterized by this.

Effect of the Invention

[0007] The runway-embedded flash device of the present invention is light, has a long life, has a high effective luminous intensity, can switch the luminous intensity, has low power consumption, and has excellent heat dissipation properties.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

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Figure 9

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Figure 11

Figure 12

[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 in any way by the following embodiments. In FIGS. 1 to 12, the same parts are denoted by the same reference numerals. The descriptions of the respective embodiments can be mutually incorporated. Also, in the drawings, for convenience of explanation, there are parts where the structure of each part is appropriately simplified and shown, and the dimensional ratios of each part may be different from the actual ones and may be shown schematically.

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

[0011] The cylindrical main body 10 can be embedded in the runway 2 as will be described later with reference to FIG. 10 in Embodiment 4. The cylindrical main body 10 may be, for example, a cylinder as shown in FIG. 1, or may be a cylindrical shape other than a cylinder such as an elliptical cylinder or a rectangular cylinder.

[0012] The ceiling member 11 is disposed at the upper opening of the cylindrical main body 10 in a state where it can be exposed on the runway surface when the cylindrical main body 10 is embedded in the runway 2.

[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 castings of aluminum, castings of titanium, castings of aluminum alloys, castings of titanium alloys, etc. Since they are lightweight, castings of aluminum and castings of titanium are preferable, and since they are inexpensive, castings of aluminum are particularly preferable. 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 may be, for example, castings of aluminum, castings of titanium, castings of aluminum alloys, castings of titanium alloys, etc., similar to the case of the integrally molded product.

[0014] The ceiling member 11 is provided with a window for flash irradiation, and the light guide member 12 is disposed on the window for flash irradiation. In the runway-embedded flash device 1 of the present embodiment, for example, there are two or more of the windows for flash irradiation, and the light guide member 12 may be disposed on each of the windows for flash irradiation. If there are two or more light guide members 12, the load on the light guide member 12 can be further reduced and breakage can be prevented. The window for flash irradiation and the light guide member 12 may be divided into two or more by, for example, a reinforcing plate member 14 described later, as shown in FIG. 1. Examples of the light guide member 12 include a prism lens. The material of the prism lens is not particularly limited, but is, for example, glass or the like.

[0015] The ceiling member 11 includes, for example, 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 disposed on the rear side of the irradiation direction of the window for flash irradiation, and the lower ceiling portion 11b is disposed on the irradiation direction side of the window for flash irradiation.

[0016] The runway-embedded flash device 1 of the present embodiment further includes, for example, a reinforcing plate member 14, and the reinforcing plate member 14 may be disposed 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 integrally molded products. When the ceiling member 11 and the reinforcing plate member 14 are separate members, examples of the reinforcing plate member 14 include castings of aluminum, castings of titanium, castings of aluminum alloys, castings of titanium alloys, etc., similar to 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. The fixing member 15 is arranged on the outer peripheral side of the ceiling member 11, and the fixing member 15 may be provided with screw holes for passing screws for fixing to the runway 2. The fixing member 15 may be, for example, in a tapered shape with an inclined outer surface so that the thickness becomes thinner toward the outer peripheral side. The ceiling member 11 and the fixing member 15 may be, for example, separate independent members or integrally molded products. When the ceiling member 11 and the fixing member 15 are separate members, examples of the fixing member 15 include castings of aluminum, castings of titanium, castings of aluminum alloys, castings of titanium alloys, etc., similar to 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 lifting the runway-embedded flash device 1 by a tool.

[0018] The LED flash light source 13 is arranged in the cylindrical main body 10 in a state where it can irradiate a flash toward the light guide member 12 arranged on the flash irradiation window. FIG. 3 shows a perspective view from below of an example of the cylindrical main body 10 and the ceiling member 11. For example, as shown in FIG. 3, on the inner surface of the ceiling member 11 (the surface on the side of the cylindrical main body 10), a portion for arranging the LED flash light source 13 may be provided at the lower part of the flash irradiation window. The flash irradiated from the LED flash light source 13 can be irradiated from the flash irradiation window to the outside by the light guide member 12.

[0019] Examples of the LED flash light source 13 include an LED module. The LED flash light source 13 includes, for example, a substrate 13a and LEDs 13b as shown in FIG. 1, and the LEDs 13b are arranged on the substrate 13a. In the example shown in FIG. 1, the number of the LED flash light sources 13 is two, but the LED flash light source 13 may be one or three or more.

[0020] The mounting conditions of the LEDs 13b on the substrate 13a are not particularly limited and can be appropriately set according to the target optical characteristics. FIG. 1 shows an example in which 72 LEDs 13b are mounted on the substrate 13a in two matrices of 4×9 = 36.

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

[0022] The LED flash light source 13 includes, for example, a lens member 13c as shown in the partial enlarged perspective view of FIG. 5 and the cross-sectional view of FIG. 6. The lens member 13c is disposed above the LED 13b, and the lens member 13c may be a lens member that makes the irradiation surface of the flash light emitted from the LED 13b have a uniform illuminance distribution. Examples of the lens member 13c include a fly-eye lens, an integrator lens, and the like. For example, as shown in FIG. 6, by dividing the lens member 13c into two or more so that the lens member 13c does not become too large, the load on the lens member 13c can be further reduced and breakage can be prevented. It is preferable that the lens member 13c is not made too small so that there is no loss in extracting the emitted flash light.

[0023] The heat conduction member 17 is disposed inside the cylindrical main body 10. A part of the heat conduction member 17 is in contact with the LED flash light source 13, and at least a part of the other part of the heat conduction member 17 is in contact with the ceiling member 11. Thereby, the heat generated by the LED flash light source 13 can be transmitted to the ceiling member 11 through the heat conduction member 17 and dissipated to the outside of the device 1. According to the runway-embedded flash device 1 of the present embodiment, the heat dissipation performance is superior to that of dissipating heat inside the device 1.

[0024] A part of the heat conduction member 17 is in contact with the surface of the substrate 13a on the side opposite to the LED 13b mounting side, as shown in FIG. 1 for example. For the other parts of the heat conduction member 17, at least a part thereof may be in contact with the ceiling member 11, and it may be in contact with any part of the ceiling member 11. For example, as shown in FIG. 1, at least a part of the other parts of the heat conduction member 17 may be in contact with the ceiling member 11 on the flash irradiation side rather than the flash irradiation window. In this aspect, for example, at least a part of the other parts of the heat conduction member 17 may be in contact with the lower ceiling part 11b. In the aspect illustrated in FIG. 1, the heat generated by the LED flash light source 13 can be transmitted to the flash irradiation side rather than the flash irradiation window through the heat conduction member 17. For example, in an airport runway in a cold region, the accumulated snow that blocks the flash irradiation can be melted. For example, as shown in FIG. 3, in addition to the arrangement part of the aforementioned LED flash light source 13, an arrangement part of the heat conduction member 17 may be provided on the inner surface (the surface on the cylindrical body 10 side) of the ceiling member 11.

[0025] Examples of the heat conduction member 17 include a plate-shaped heat sink, a heat pipe, etc. It may be made by oneself or a commercially available product may be used. Examples of the material of the plate-shaped heat sink include copper, aluminum, etc. The material of the heat pipe is not particularly limited, and known heat conduction materials can be mentioned. Specific examples include metals. 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, tungsten and its alloys, etc. FIG. 4 is a perspective view from below showing an example of the cylindrical body, the ceiling member, and the heat conduction member in the runway-embedded flash device of the present embodiment. The heat conduction member 17 includes, for example, a plate-shaped heat sink 17a and a heat pipe 17b. A part of one surface of the plate-shaped heat sink 17a is in contact with the LED flash light source 13, and at least a part of the other part of one surface of the plate-shaped heat sink 17a is in contact with the lower ceiling part 11b. The heat pipe 17b may be attached to the plate-shaped heat sink 17a in a state where one end side is located on the LED flash light source 13 side and the other end side is located on the lower ceiling part 11b side. In FIG. 4, an example where 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, but 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 aspect shown in FIG. 4, the heat pipe 17b may be arranged, for example, by notching the plate-shaped heat sink 17a in the thickness direction and embedding it, and soldering or the like.

[0026] The heat pipe 17b has, for example, as shown in FIG. 4, a first straight portion extending in a direction 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-shaped overall shape. 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 strobe device 1 of the present embodiment, for example, as shown in FIG. 11, it is preferable to irradiate an upward strobe with an angle α of about 3° with respect to the direction parallel to the runway surface. In addition, when the light guide member 12 and the LED strobe light source 13 inside the runway-embedded strobe device 1 shown in FIG. 11 are illustrated, it becomes as shown in FIG. 12.

[0028] The weight of the strobe device using a xenon strobe light source is 65 kg or less, specifically about 40 kg, whereas the weight of the runway-embedded strobe device 1 of the present embodiment is, for example, 18 kg or less, specifically about 11 kg. Thus, according to the present embodiment, it is possible to provide a lightweight runway-embedded strobe device.

[0029] The lifespan of the strobe device using a xenon strobe light source is about 500 hours, whereas the runway-embedded strobe device 1 of the present embodiment can be used, for example, indefinitely. Thus, according to the present embodiment, it is possible to provide a long-life runway-embedded strobe device.

[0030] The effective luminous intensity of the strobe device using a xenon strobe light source is 1000 cd or more, specifically about 1200 cd, whereas the effective luminous intensity of the runway-embedded strobe device 1 of the present embodiment is, for example, 6000 cd or more, specifically about 7000 cd. Thus, according to the present embodiment, it is possible to provide a runway-embedded strobe device with a high effective luminous intensity.

[0031] In the strobe device using a xenon strobe light source, it is not possible to switch the luminous intensity such as high, medium, and low, whereas the runway-embedded strobe device 1 of the present embodiment has a high effective luminous intensity as described above. Therefore, for example, it is possible to switch the luminous intensity such as high luminous intensity (for example, 6000 cd or more), medium luminous intensity (for example, 1000 cd or more), and low luminous intensity (for example, 250 cd or more). Thus, according to the present embodiment, it is possible to provide a runway-embedded strobe device capable of switching the luminous intensity. The high luminous intensity is used, for example, in daytime with poor visibility due to fog, rain, etc., the low luminous intensity is used, for example, at night, and the medium luminous intensity is used, for example, at dusk.

[0032] The power consumption of a flash device using a xenon flash light source is about 500 W, whereas the power consumption of the runway-embedded flash device 1 of the present 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 the present 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 the runway-embedded flash device of the present 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 the present embodiment is the same as 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 arranged in a state of closing the lower opening of the cylindrical main body 10. Examples of the material of the bottom cover member 16 include aluminum, titanium, aluminum alloy, titanium alloy, or their castings.

[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 ground 16a and an external ground terminal 16b. Also, if the bottom cover member 16 is attached to at least one of the cylindrical main body 10 and the LED flash light source 13 with, for example, screws 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, the heat conduction member 17 used in the runway-embedded flash device 1 of Embodiment 1 or 2 can be provided. The heat conduction member 17 of the present invention may include at least one of a plate-shaped heat sink 17a and a heat pipe 17b. Regarding the heat conduction member 17 of the present invention, the descriptions of Embodiments 1 and 2 can be incorporated.

[0037] [Embodiment 4] FIG. 10 is a schematic perspective view showing the configuration of an example of the runway according to the present embodiment. In FIG. 10, although schematically and simplifiedly shown, the runway 2 is formed by embedding the runway-embedded flash device 1 of Embodiment 1 or 2 with the ceiling member 11 exposed.

[0038] As described above, the present invention has been described with reference to the embodiments. However, the present invention is not limited to the above embodiments. Various changes 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] Some or all of the above embodiments can be described as follows in the appended claims, but are not limited thereto. (Appended Claim 1) Including a cylindrical main body, a ceiling member, a light guide member, an LED flash light source, and a heat conduction member, The cylindrical main body can be embedded in a runway, The ceiling member is disposed at the upper opening of the cylindrical main body in a state where it can be exposed on the runway surface when the cylindrical main body is embedded in the runway, A flash irradiation window is provided in the ceiling member, The light guide member is disposed at the flash irradiation window, The LED flash light source is disposed in the cylindrical main body in a state where it can irradiate a flash toward the light guide member disposed at the flash irradiation window, The flash irradiated from the LED flash light source can be irradiated from the flash irradiation window to the outside by the light guide member, The heat conduction member is disposed in the cylindrical main body, A part of the heat conduction member is in contact with the LED flash light source, At least a part of the other part of the heat conduction member is in contact with the ceiling member. A runway-embedded flash device. (Appended Claim 2) At least a part of the other part of the heat conduction member is in contact with the ceiling member on the flash irradiation side of the flash irradiation window. The runway-embedded flash device according to Appended Claim 1. (Appended Claim 3) The LED flash light 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 irradiation surface of the flash light emitted from the LED have a uniform illuminance distribution, A part of the heat conduction member is in contact with the surface of the substrate on the side opposite to the LED mounting side, The runway-embedded flash device according to Appendix 1 or 2. (Appendix 4) The ceiling member includes an upper ceiling portion and a lower ceiling portion, The upper ceiling portion is disposed on the rear side with respect to the irradiation direction of the flash 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, The runway-embedded flash device according to any one of Appendices 1 to 3. (Appendix 5) Furthermore, it includes a reinforcing plate member, The reinforcing plate member is disposed on the outer surface of the lower ceiling portion in a state of standing upright in the vertical direction of the outer surface of the lower ceiling portion, The runway-embedded flash device according to Appendix 4. (Appendix 6) The heat conduction member includes at least one of a plate-shaped heat sink and a heat pipe, The runway-embedded flash device according to any one of Appendices 1 to 5. (Appendix 7) The heat conduction member includes a plate-shaped heat sink and a heat pipe, A part of one surface of the plate-shaped heat sink is in contact with the LED flash light 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 in a state where one end side thereof is located on the LED flash light source side and the other end side thereof is located on the lower ceiling portion side, The runway-embedded flash device according to Appendix 6. (Appendix 8) The heat pipe has a first straight portion extending in a direction perpendicular to the irradiation direction and a second straight portion extending in the irradiation direction, and the first straight portion and the second straight portion are joined to form an L-shaped overall shape, with one end side including the first straight portion and the other end side including the second straight portion. The runway-embedded flash device according to Appendix 7. (Appendix 9) Furthermore, it includes a fixing member. The fixing member is disposed on the outer peripheral portion of the ceiling member. The fixing member is provided with screw holes through which screws for fixing to the runway are passed. The runway-embedded flash device according to any one of Appendices 1 to 8. (Appendix 10) The ceiling member and the fixing member are integrally molded products. The runway-embedded flash device according to Appendix 9. (Appendix 11) The cylindrical main body and the ceiling member are integrally molded products. The runway-embedded flash device according to any one of Appendices 1 to 10. (Appendix 12) There are two or more flash irradiation windows, and the light guide members are arranged in each of the flash irradiation windows. The runway-embedded flash device according to any one of Appendices 1 to 11. (Appendix 13) Furthermore, it includes a bottom cover member. The bottom cover member is disposed in a state of closing the lower opening of the cylindrical main body. The runway-embedded flash device according to any one of Appendices 1 to 12. (Appendix 14) The bottom cover member includes a cable ground and an external earth terminal. The runway-embedded flash device according to Appendix 13. (Appendix 15) A heat conduction member used for the runway-embedded flash device according to any one of Appendices 1 to 14. (Appendix 16) Including at least one of a plate-shaped heat sink and a heat pipe The heat conduction member according to Supplementary Note 15. (Supplementary Note 17) A runway in which the runway-embedded flash device according to any one of Supplementary Notes 1 to 14 is embedded.

Industrial Applicability

[0040] According to the present invention, it is possible to provide a new runway-embedded flash device that is light, has a long lifespan, has a high effective luminous intensity, can switch the luminous intensity, has low power consumption, and has excellent heat dissipation properties.

Explanation of Signs

[0041] 1 Runway-embedded flash device 2 Runway 10 Cylindrical main body 11 Ceiling member 11a Upper ceiling part 11b Lower ceiling part 12 Light guide member 13 LED flash light source 13a Substrate 13b LED 13c Lens member 14 Reinforcing plate member 15 Fixing member 16 Bottom cover member 16a Cable ground 16b External earth terminal 16c Screw 17 Heat conduction member 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 embedded in 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