lamp

Abstract

To provide a lamp that can suppress increase in weight and release heat from an LED module.SOLUTION: A lamp includes: an LED module 11 working as a light source; heat transfer means 12; light distribution means; a housing 14 with an opening; and a light-transmissive cover 15. The LED module 11 includes: multiple LEDs; and an LED substrate with a mount surface for mounting the multiple LEDs thereon. The light distribution means is disposed on a light irradiation side of the LED module 11. The LED module 11 and the light distribution means are disposed inside the housing 14. The light-transmissive cover 15 is disposed in the opening of the housing 14. The LED module 11 is disposed while being separated from the housing 14 inside the housing 14. The heat transfer means 12 is disposed so as to be capable of releasing heat from the LED module 11 to the housing 14.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a lamp. [Background technology]

[0002] BACKGROUND ART Flash devices using xenon lamps have conventionally been used at airports and the like to guide landing aircraft to the runway (Non-Patent Document 1). [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] US Department of Transportation, “SPECIFICATION FOR DISCHARGE-TYPE FLASHING LIGHT EQUIPMENT”, [online], September 8, 2010, Federal Aviation of Transportation, [Retrieved January 13, 2017], Internet<URL: https: / / www.faa.gov / documentLibrary / media / Advisory_Circular / 150_5345_51b.pdf> Summary of the Invention [Problem to be solved by the invention]

[0004] If the xenon lamps mentioned above could be replaced with light-emitting diode (LED) lamps, it would be possible to significantly extend their lifespan and reduce power consumption. However, when using LED lamps, the LED modules installed in the LED lamps require heat dissipation.

[0005] To promote heat dissipation from the LED module, it is conceivable to install heat dissipation fins inside the LED lamp. However, there is a standard that the weight of a flash lamp used in a flash device must be 5.5 kg or less in total (Non-Patent Document 1). Therefore, an increase in weight due to the installation of heat dissipation fins, etc. is not desirable.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a lamp that can suppress an increase in weight and can dissipate heat from an LED module. [Means for solving the problem]

[0007] In order to achieve the above object, the lamp of the present invention comprises a housing, a light-transmitting cover, a light distribution means, an LED module as a light source, a heat transfer means, and a heat spreader; the housing has an opening, and the light-transmitting cover is disposed in the opening; the light distribution means and the LED module are disposed inside the housing; the light distribution means is disposed on the light emitting side of the LED module, the LED module is disposed on the light-transmitting cover side of the heat spreader; the heat transfer means is arranged so as to be able to dissipate heat from the LED module to the housing; One end of the heat transfer means is thermally connected to the LED module, and the other end is thermally connected to the housing. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a lamp that can suppress an increase in weight and can dissipate heat from the LED module. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a cross-sectional view showing an example of the configuration of a lamp according to the first embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing an example of another configuration of the lamp of the first embodiment. [Figure 3] FIG. 3 is a cross-sectional view showing an example of the configuration of the lamp of the second embodiment. [Figure 4] FIG. 4 is a perspective view showing an example of installation of the lamp of the first embodiment. [Figure 5] FIG. 5 is a perspective view showing another example of installation of the lamp of the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] In the lamp of the present invention, for example, the heat transfer means has a heat conduction portion and a heat radiation portion, the heat conduction part is arranged to conduct heat from the LED module; The heat dissipation section is disposed in the housing so as to be able to dissipate heat from the LED module.

[0011] In the lamp of the present invention, for example, the heat dissipation portion is formed at one end of the heat transfer means, The other end of the heat transfer means is thermally connected to the LED module.

[0012] In the lamp of the present invention, for example, the heat dissipation portion is thermally connected to the housing.

[0013] In the lamp of the present invention, for example, the heat transfer means includes a heat pipe.

[0014] The lamp of the present invention may further include, for example, a heat spreader. the heat spreader is disposed on the opposite side of the mounting surface with respect to the LED substrate, The heat transfer means is thermally connected to the heat spreader.

[0015] In the lamp of the present invention, for example, the space within the housing surrounded by the LED module, the housing, and the heat transfer means is a wiring accommodating section that accommodates wiring connected to the LED module.

[0016] In the lamp of the present invention, for example, the housing has a connection portion that can be connected to wiring outside the lamp, The wires housed in the wire housing are connected to the connection portions.

[0017] In the lamp of the present invention, for example, the housing includes a through-hole through which a wire can be introduced from outside the housing into the housing.

[0018] In the lamp of the present invention, for example, the light distribution means includes at least one of a reflector and a lens.

[0019] In the lamp of the present invention, for example, the reflector is cylindrical, The LED module is disposed in the light source side opening of the reflector with the mounting surface facing the light emitting side opening of the reflector.

[0020] The lamp of the present invention is used, for example, in an aircraft landing guidance flashing device.

[0021] The lamp of the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to the following description. In the following Figs. 1 to 5, the same parts are given the same reference numerals, and their description may be omitted. Furthermore, in the drawings, for the sake of convenience, the structure of each part may be shown in an appropriately simplified manner, and the dimensional ratios of each part may be shown schematically and different from the actual ones.

[0022] [Embodiment 1] This embodiment is an example of a lamp used in an aircraft landing guidance flashing device. FIG. 1 shows an example of the configuration of the lamp of this embodiment. As shown in FIG. 1, the lamp 10 of this embodiment includes an LED module 11 as a light source, a heat transfer means 12, a light distribution means 13a, a housing 14 having an opening, and a light-transmitting cover 15. Although not shown, the LED module 11 includes a plurality of LEDs and an LED substrate having a mounting surface (the left surface in FIG. 1) on which the plurality of LEDs are mounted. As shown in FIG. 1, the LED module 11 is disposed away from the housing 14. The heat transfer means 12 is disposed on the opposite side of the mounting surface from the LED substrate (the right side of the LED module 11 in FIG. 1), with one end thermally connected to the LED module 11 and the other end thermally connected to the housing 14. As a result, the heat transfer means 12 is disposed so as to dissipate heat from the LED module 11 to the housing 14. Reflector 13a, which is a light distribution means, is disposed on the light emitting side of LED module 11 (on the left side where the mounting surface is located in FIG. 1). LED module 11, heat transfer means 12, and reflector 13a are disposed inside housing 14. Light-transmitting cover 15 is disposed at the opening of housing 14.

[0023] The LED module 11 may have a plurality of LEDs mounted on the mounting surface of the LED substrate so as to have a brightness comparable to that of a xenon lamp used in a conventional aircraft landing guidance flashing device. The size and material of the LED substrate, the number of LEDs, and other factors are not particularly limited. In the lamp 10 of this embodiment, the LED module 11 is separated from the housing 14 by the heat transfer means 12, but the LED module 11 may be disposed so as not to come into direct contact with the housing 14. The LED module 11 may also be disposed separated from the housing 14 by, for example, a spacing member. In the lamp 10 of this embodiment, the LED module 11 is disposed in the light source-side opening of the reflector 13a with the mounting surface facing the light-emitting opening of the reflector 13a. However, the positional relationship between the LED module 11 and the reflector 13a is not limited thereto; the reflector 13a may be disposed on the light-emitting side of the LED module 11.

[0024] In the lamp 10 of this embodiment, the heat transfer means 12 is a heat pipe. However, any known heat transfer means can be used as long as it is capable of transferring heat. Specific examples of the heat transfer means 12 include a member (heat transfer member) made of a thermally conductive material, a heat pipe, or a combination thereof. The thermally conductive material is not particularly limited and includes known thermally conductive materials, such as metals, ceramics, ceramic-metal composites, and diamond. Examples of metals 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. The heat pipe is not particularly limited and includes, for example, a self-oscillating heat pipe, and commercially available products may be used. In the lamp 10 of this embodiment, there are two heat transfer means 12. However, the number of heat transfer means 12 is not particularly limited and may be one or more.

[0025] The heat transfer means 12 may be disposed in any manner so long as it can dissipate heat from the LED module 11 to the housing 14. For example, as shown in FIG. 1 , one end of the heat transfer means 12 may be thermally connected to the LED module 11, and the other end of the heat transfer means 12 may be thermally connected to the housing 14. In the lamp 10 of this embodiment, one end of the heat transfer means 12 is in direct contact with the LED module 11, but it may also be in indirect contact. In the latter case, for example, a heat diffusion member is interposed between the LED module 11 and the heat transfer means 12, and the heat diffusion member is thermally connected to the LED module 11 and the heat transfer means 12. An example of the heat diffusion member is a heat spreader (integrated heat spreader) made of the aforementioned thermally conductive material.

[0026] In the lamp 10 of this embodiment, the light distribution means is a reflector 13a, but the light distribution means may be any means capable of directing the light emitted by the LED module 11 toward the light-transmitting cover 15 by, for example, reflection, concentration, or diffusion. The light distribution means may be, for example, a reflector as in the lamp 10 shown in Fig. 1, or a lens 13b as shown in Fig. 2. Furthermore, the lamp of the present invention may use a combination of a reflector and a lens as the light distribution means.

[0027] Examples of materials for forming the reflector 13a include metals such as aluminum and its alloys, magnesium and its alloys, and resins such as PC and PBT. The reflector 13a may have a high reflection efficiency improved by, for example, plating the reflective surface or applying a highly reflective coating. For example, in the lamp 10, the reflector 13a may be cylindrical as shown in FIG. 1, and the LED module 11 may be disposed in one opening (light source side opening) of the reflector 13a (on the right side in FIG. 1) so that the mounting surface of the LED module 11 faces the interior of the reflector 13a, i.e., the opening on the light emitting side of the reflector 13a. While FIG. 1 illustrates a cylindrical reflector 13a (e.g., umbrella-shaped) with one opening area narrower than the other, the two opening areas of the reflector 13a may be the same. The cross-sectional shape of the reflector 13a may be arc-shaped as shown in FIG. 1, or linear. The reflector 13a may be disposed on the light emitting side of the LED module 11 by a support member or the like.

[0028] Examples of materials for forming the housing 14 include aluminum and resin. The housing 14 may be formed as a single unit, or may be formed from multiple components. In the latter case, the housing 14 may include, for example, a cylindrical member and a disk-shaped member, and may be formed by arranging the disk-shaped member in an opening of the cylindrical member on the side opposite to the side where the light-transmitting cover 15 is arranged.

[0029] The light-transmitting cover 15 may be made of any material that can transmit most of the light emitted from the LED module 11, such as glass.

[0030] According to the lamp 10 of this embodiment, the heat transfer means 12 is arranged so as to be able to dissipate the heat from the LED module 11 to the housing 14, and therefore the heat from the LED module 11 can be dissipated to the housing 14 without using a heat dissipation fan or the like. Therefore, the lamp 10 of this embodiment can suppress an increase in weight due to the installation of a heat dissipation fan or the like. Furthermore, according to the lamp 10 of this embodiment, there is no need to use a fan or the like, which is a risk of failure, for the conduction of heat within the housing 14, and therefore there is no need to perform maintenance on the inside of the housing 14 for, for example, about 20 to 30 years, which is the useful life of the LED.

[0031] In the lamp 10 of this embodiment, the heat transfer means 12 may include a heat conduction portion and a heat dissipation portion. In this case, it is preferable that the heat conduction portion is arranged to conduct heat from the LED module 11, and the heat dissipation portion is arranged to dissipate heat from the LED module to the housing 14. As a specific example, the heat conduction portion is thermally connected to the LED module 11. Furthermore, the heat dissipation portion is thermally connected to the housing 14, for example. The heat conduction portion and the heat dissipation portion are, for example, thermally connected, more specifically, integrally formed. The heat conduction portion may be, for example, a member capable of conducting heat from the LED module 11 to the heat dissipation portion, such as a heat pipe. The heat dissipation portion may be, for example, a member capable of dissipating heat conducted by the heat conduction portion to the housing 14, such as a heat conduction member.

[0032] When the heat transfer means 12 has the heat conduction portion and the heat dissipation portion, there are no particular limitations on the positions of the heat conduction portion and the heat dissipation portion in the heat transfer means 12. The heat dissipation portion may be formed, for example, at one end of the heat transfer means 12. In this case, the region from the other end of the heat transfer means 12 to the heat dissipation portion may also be referred to as the heat conduction portion. In addition, it is preferable that the other end of the heat transfer means 12 is thermally connected to the LED module 11.

[0033] In this way, by having the heat transfer means 12 have the heat conduction portion and the heat dissipation portion, for example, heat from the LED module 11 can be efficiently conducted from the heat conduction portion to the heat dissipation portion and then from the heat dissipation portion to the housing 14, thereby further improving heat dissipation efficiency. Also, when the heat transfer means 12 has the heat conduction portion and the heat dissipation portion, by adjusting the contact area between the heat dissipation portion and the housing 14, the heat dissipation efficiency can be optimally adjusted according to the amount of heat generated by the LED module 11, thereby further suppressing weight increase.

[0034] The lamp 10 of this embodiment may further include, for example, a heat spreader. In this case, it is preferable that the heat spreader is disposed on the opposite side of the mounting surface of the LED substrate, and the heat transfer means 12 is thermally connected to the heat spreader. The heat spreader may be, for example, a commercially available product. The heat spreader may be formed integrally with the heat transfer means 12. In this case, the heat spreader can also be said to be a heat absorption portion of the heat transfer means 12. In this way, by including the heat spreader, for example, heat from the LED module 11 can be efficiently absorbed and dispersed, and can also be efficiently conducted to the heat transfer means 12, thereby further improving heat dissipation efficiency.

[0035] In the lamp 10 of this embodiment, for example, the space within the housing surrounded by the LED module 11, the housing 14, and the heat transfer means 12 may serve as a wiring housing for housing wiring connected to the LED module 11. Examples of wiring housed in the wiring housing include wiring for supplying power to the LED module 11. The wiring housing may house, for example, all or part of the wiring within the lamp 10. Furthermore, for example, the entirety or part of a single wiring may be housed in the wiring housing. The number of wirings is not particularly limited and may be set appropriately depending on, for example, the amount of power consumed by the LED module 11, and may be one or more. If the lamp 10 includes the heat spreader, the space surrounded by the heat spreader, the housing 14, and the heat transfer means 12 may serve as the wiring housing. Thus, by including the wiring housing, for example, the wiring within the lamp 10 can be concentrated in one location, thereby reducing the space required for wiring. Therefore, for example, the size of the housing 14 can be reduced, thereby further suppressing weight increase.

[0036] Furthermore, in the lamp 10 of this embodiment, for example, the housing 14 may have a connection portion that can be connected to wiring outside the lamp 10. In this case, it is preferable that the wiring housed in the wiring housing be connected to the connection portion. The connection portion is not particularly limited, and a known connector such as a power connector can be used. The connection portion is preferably waterproof to reduce malfunctions when installed outdoors. The connection portion is preferably located adjacent to the wiring housing. In this way, by having the connection portion, for example, even if a malfunction occurs during installation and use of the aircraft landing guidance flash device, the malfunctioning lamp 10 can be replaced with a new lamp 10, allowing the aircraft landing guidance flash device to be immediately usable. Therefore, having the connection portion, for example, facilitates maintenance of the aircraft landing guidance flash device.

[0037] In the lamp 10 of this embodiment, for example, the housing 14 includes a through-hole through which a wire can be introduced from the outside of the housing 14 into the housing 14. The size of the through-hole may be any size as long as the wire can be introduced therethrough.

[0038] Next, an installation example of the lamp 10 of this embodiment will be described with reference to Figures 4 and 5. The lamp 10 of this embodiment may further include, for example, an arm 23 and a leg 21, and may be installed on the ground by the leg 21. The lamp 10 of this embodiment may also include, for example, a cable (wiring) 22 for supplying power to the LED module 11. Furthermore, the lamp 10 shown in Figure 4 may be installed on a pole 31 installed on the ground, as shown in Figure 5.

[0039] The lamp 10 of this embodiment is configured to flash 120 times per minute, for example. When installed at a large airport with multiple runways, for example, 8 to 29 lamps are installed approximately every 30 meters from the direction of aircraft approach toward the runway end. Furthermore, when installed at a small airport with few aircraft takeoffs and landings and only one short runway, the lamps 10 of this embodiment are installed so that two lamps flash (flash) simultaneously, one on each side of the short side of the runway end. Furthermore, when installed at an airport where aircraft cannot approach the runway directly, the lamps 10 of this embodiment are installed at key points on the approach to the runway, for example, every few kilometers. Furthermore, the lamps 10 of this embodiment are configured to have three levels of brightness, for example, in accordance with the standard specifications of the Ministry of Land, Infrastructure, Transport and Tourism. Of these three brightness levels, the brightest, High, is used, for example, during the day when visibility is poor due to fog or rain, the darkest, Low, is used, for example, at night, and the intermediate, Middle, is used, for example, in the evening.

[0040] [Embodiment 2] This embodiment is another example of a lamp used in an aircraft landing guidance flashing device. FIG. 3 is a cross-sectional view showing an example of the configuration of a lamp of this embodiment. As shown in FIG. 3, a lamp 20 of this embodiment has a heat spreader 16, a separator 17, a support member 18, and wiring 19 in addition to the configuration of the lamp 10 of the first embodiment. In the lamp 20 of this embodiment, the space surrounded by the heat spreader 16, the housing 14, and the heat transfer means 12 is the wiring accommodating section. The LED module 11 is separated from the housing 14 by the separator 17, one end of which is connected to the housing 14 and the other end of which is connected to the heat spreader 16. The LED module 11 is disposed on the light source side opening of the reflector 13a, with the mounting surface facing the light emission side opening of the reflector 13a. The heat transfer means 12 includes an integrally formed heat conductive portion 12a and heat dissipation portion 12b. The heat conductive portion 12a is thermally connected to a heat spreader 16 at the end opposite the heat dissipation portion 12b, and the heat dissipation portion 12b is thermally connected to the housing 14. As a result, heat from the LED module 11 is dissipated to the housing 14 via the heat spreader 16, the heat conductive portion 12a, and the heat dissipation portion 12b. Furthermore, the end of the reflector 13a facing the LED module 11 is not connected to the LED module 11. Instead, it is supported by a support member 18, one end of which is connected to the housing 14 and the other end of which is connected to the reflector 13a. The housing 14 has a power connector 14a, which serves as a connection portion, adjacent to the wiring housing portion. The heat spreader 16 is disposed on the opposite side of the mounting surface of the LED substrate of the LED module 11 and is thermally connected thereto. The wiring 19 is connected from the connection portion 14a of the housing 14 to the LED module 11 via the wiring housing portion. Except for this point, the lamp 20 of this embodiment has the same configuration as the lamp 10 of the first embodiment, and the description thereof can be used.

[0041] Examples of materials for forming the separating member 17 include aluminum, resin, etc. The separating member 17 may be any material that can directly or indirectly separate the LED module 11 from the housing 14. Examples of materials for forming the supporting member 18 include aluminum, resin, etc. The supporting member 18 may be any material that can arrange the reflector 13a on the light irradiation side of the LED module 11.

[0042] According to the lamp 20 of this embodiment, since it includes the heat spreader 16 and the heat transfer means 12 has the heat conduction portion 12a and the heat dissipation portion 12b, it is possible to very efficiently dissipate heat from the LED module 11 to the housing 14. Furthermore, since the housing 14 has the connection portion 14a, the lamp 20 can be easily replaced, facilitating maintenance of the aircraft landing guidance flashing device. Furthermore, since it has the wiring accommodating portion, for example, the wiring 19 inside the lamp 20 can be concentrated in one location, thereby reducing the space required for wiring and the size of the housing 14, thereby further suppressing weight increase. Therefore, the lamp 20 of this embodiment is more suitable for use as a lamp for an aircraft landing guidance flashing device.

[0043] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above 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.

[0044] <Additional Notes> Some or all of the above-described embodiments and examples can be described as, but are not limited to, the following supplementary notes. (Appendix 1) The LED module is the light source, a heat transfer means; Light distribution means; a housing having an opening; a light-transmitting cover; the LED module includes a plurality of LEDs and an LED substrate having a mounting surface on which the plurality of LEDs are mounted; the light distribution means is disposed on the light emitting side of the LED module, The LED module and the light distribution means are disposed inside the housing, The light-transmitting cover is disposed in the opening of the housing, the LED module is disposed within the housing and spaced apart from the housing; The lamp is characterized in that the heat transfer means is arranged so as to be able to dissipate heat from the LED module to the housing. (Appendix 2) the heat transfer means has a heat conduction portion and a heat dissipation portion, the heat conduction part is arranged to conduct heat from the LED module; 2. The lamp according to claim 1, wherein the heat dissipation unit is arranged in the housing so as to dissipate heat from the LED module. (Appendix 3) The heat dissipation portion is formed at one end of the heat transfer means, 3. The lamp of claim 2, wherein the other end of the heat transfer means is thermally connected to the LED module. (Appendix 4) 4. The lamp according to claim 2, wherein the heat dissipation portion is thermally connected to the housing. (Appendix 5) 5. The lamp of claim 1, wherein the heat transfer means includes a heat pipe. (Appendix 6) Further, the device has a heat spreader, the heat spreader is disposed on the opposite side of the mounting surface with respect to the LED substrate, 6. The lamp of claim 1, wherein the heat transfer means is thermally connected to the heat spreader. (Appendix 7) A lamp described in any one of Appendices 1 to 6, wherein the space within the housing surrounded by the LED module, the housing, and the heat transfer means is a wiring accommodating section that accommodates wiring connected to the LED module. (Appendix 8) the housing has a connection portion that can be connected to wiring outside the lamp, 8. The lamp of claim 7, wherein the wiring accommodated in the wiring accommodating portion is connected to the connecting portion. (Appendix 9) 9. The lamp according to any one of claims 1 to 8, wherein the housing includes a through hole through which wiring can be introduced from outside the housing to inside the housing. (Appendix 10) 10. The lamp of claim 1, wherein the light distribution means includes at least one of a reflector and a lens. (Appendix 11) the reflector is cylindrical; The lamp according to claim 10, wherein the LED module is arranged in the light source side opening of the reflector with the mounting surface facing the light emitting side opening of the reflector. (Appendix 12) 12. A lamp according to any one of claims 1 to 11 for use in an aircraft landing guidance flasher.

[0045] This application claims priority based on Japanese Patent Application No. 2017-003940, filed January 13, 2017, the disclosure of which is incorporated herein in its entirety. [Industrial Applicability]

[0046] According to the present invention, it is possible to provide a lamp that can suppress an increase in weight and can dissipate heat from the LED module. The lamp of the present invention can be used, for example, in an aircraft landing guidance flashing device. [Explanation of symbols]

[0047] 10, 20 lamps 11 LED modules 12 Heat transfer means 12a Heat conduction part 12b Heat dissipation part 13a Light distribution means (reflector) 13b Light distribution means (lens) 14. Case 14a Connection (power connector) 15 Light-transmitting cover 16 Heat spreader 17 Separation member 18 Support member 19, 22 Wiring 21 Legs 23 Arm 31 Paul

Claims

1. a housing, a light-transmitting cover, a light distribution means, an LED module, a heat transfer means, and legs; the housing has an opening and contains the LED module and the light distribution means therein; the light-transmitting cover is disposed in the opening; the LED module includes a plurality of LEDs and an LED substrate on which the plurality of LEDs are mounted, and is disposed within the housing and spaced apart from the housing; the heat transfer means includes a heat spreader, and is thermally connected to the LED substrate and the housing; the light distribution means includes at least one of a reflector and a lens, is disposed on the light emission side of the LED module, and emits the light emitted from the LED module to the outside through the light-transmitting cover; The leg portion has an arm that supports the housing. A lamp characterized by:

2. 10. The lamp of claim 1, wherein the light source is configured to be capable of flashing multiple times per minute and to have at least three brightness levels: high, medium, and low.

3. a space surrounded by the LED module and the housing within the housing is a wiring accommodating section that accommodates wiring connected to the LED module; the housing has a connection portion made of a waterproof connector connectable to the wiring, the wiring accommodated in the wiring accommodation portion is connected to the connection portion, The lamp according to claim 1 , wherein the housing includes a through-hole through which the wiring can be introduced from outside the housing to inside the housing.

4. The lamp according to any one of claims 1 to 3, which is used in an aircraft landing guidance flashing device.

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