Runway-embedded flashing devices

Abstract

To provide a new runway-embedded flashing device that is light-weight, has long life, has high effective luminous intensity, can switch luminous intensity and has less power consumption.SOLUTION: A runway-embedded flash device 1 of the present invention comprises a cylindrical body 10, a ceiling member 11, a light guide member 12, and an LED flash light source 13. The cylindrical body 10 can be embedded in a runway. The ceiling member 11 is arranged on an upper opening part of the cylindrical body 10 in a state where it can be exposed to a runway surface when the cylindrical body 10 is embedded in the runway. The ceiling member 11 is provided with a window for flash light emission. The light guide member 12 is arranged on the window for flash light emission. The LED flash light source 13 is arranged in the cylindrical body 10 in a state where it can emit flash light toward the light guide member 12 arranged on the window for a flash light source. The light guide member 12 allows the flash light emitted from the LED flash light source 13 to be emitted to the outside from the window for flash light emission.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a runway-embedded flash device.

Background Art

[0002] Conventionally, as a guiding sign for an airport runway, a sign lamp that irradiates sign light has been buried under the road surface (see, for example, Patent Document 1). In the embedded sign 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 luminous intensities, and having a large power consumption.

[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, and has a small power consumption.

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, and an LED flash light source, the cylindrical main body can be embedded in a runway, the ceiling member is arranged 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, The ceiling member is provided with a window for flashing light, and the inner surface of the ceiling member, in the lower part of the window for flashing light, is provided with a section for arranging the LED flashing light source. The light guide member is positioned in the flashing light irradiation window, The LED flashing light source includes an LED module and a plate-shaped lens member, and is positioned within the cylindrical body along the inner surface of the ceiling member in a manner that allows it to emit a flash of light towards the light guide member located in the flashing light illumination window. The light guide member allows the flash emitted from the LED flash source to be projected in only one direction outwards from the flash illumination window. It is characterized by the following: [Effects of the Invention]

[0007] The runway-embedded flashing device of the present invention is lightweight, has a long lifespan, high effective luminous intensity, allows for luminous intensity switching, and consumes little power. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is an exploded perspective view showing the configuration of an example of a runway-embedded flashing device according to Embodiment 1. [Figure 2] Figure 2 is a top-down perspective view showing an example of a cylindrical body and ceiling member in a runway-embedded flashing device according to Embodiment 1. [Figure 3] Figure 3 is a perspective view from below showing an example of a cylindrical body and ceiling member in the runway-embedded flashing device of Embodiment 1. [Figure 4] Figure 4 is a partially enlarged perspective view showing an example of an LED flashing light source in the runway-embedded flashing device of Embodiment 1. [Figure 5] Figure 5 is a cross-sectional view showing an example of an LED flashing light source in the runway-embedded flashing device of Embodiment 1. [Figure 6] Figure 6 is an exploded perspective view showing the configuration of an example of a runway-embedded flashing device according to Embodiment 2. [Figure 7] Figure 7 is a perspective view from below of the runway-embedded flashing device shown in Figure 6. [Figure 8] FIG. 8 is a side view showing an example of a bottom cover member in the runway-embedded strobe device of Embodiment 2. [Figure 9] FIG. 9 is a schematic perspective view showing the configuration of an example of a runway in Embodiment 3. [Figure 10] FIG. 10 is a schematic side view for explaining flash irradiation in the runway-embedded strobe device of Embodiment 1. [Figure 11] FIG. 11 is a side view showing an example of a light guide member and an LED flash light source inside the runway-embedded strobe device shown in FIG. 10.

BEST MODE FOR CARRYING OUT THE INVENTION

[0009] Next, embodiments of the present invention will be described with reference to FIGS. 1 to 11. The present invention is not limited or restricted in any way by the following embodiments. In FIGS. 1 to 11, 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 etc. of each part are 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 the runway-embedded strobe device of the present embodiment. As shown in FIG. 1, the runway-embedded strobe device 1 includes a cylindrical main body 10, a ceiling member 11, a light guide member 12, and an LED flash light source 13.

[0011] The cylindrical main body 10 can be embedded in the runway 2 as will be described later with reference to FIG. 9 in Embodiment 3. 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 arranged 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] As shown in FIG. 1, the cylindrical body 10 and the ceiling member 11 may be separate and independent members, or as shown in FIG. 2, they may be integrally molded products. Examples of the integrally molded products 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 preferred, and since they are inexpensive, castings of aluminum are particularly preferred. 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, 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 products.

[0014] A window for flash irradiation is provided in the ceiling member 11, 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 parts 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.

[0015] The ceiling member 11 may include, 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 flashing device 1 of this embodiment may further include, for example, a reinforcing plate member 14, the reinforcing plate member 14 being positioned on the outer surface of the lower ceiling portion 11b in an upright position vertically to 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 they may be a single molded product. When the ceiling member 11 and the reinforcing plate member 14 are separate members, the reinforcing plate member 14 may be made of, for example, an aluminum casting, a titanium casting, an aluminum alloy casting, a titanium alloy casting, etc., as in the case of a single molded product.

[0017] The runway-embedded flashing device 1 of this embodiment further includes, for example, a fixing member 15, the fixing member 15 being positioned on the outer circumference of the ceiling member 11, and the fixing member 15 may be provided with screw holes for passing screws for fixing it to the runway 2. The fixing member 15 may be, for example, tapered with its outer surface inclined so that its thickness decreases toward the outer circumference. The ceiling member 11 and the fixing member 15 may be, for example, separate and independent members, or they may be a single molded product. If 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, etc., as in the case of a single molded product. At least one of the ceiling member 11 and the fixing member 15 may have a hole for, for example, pulling up the runway-embedded flashing device 1 with a tool.

[0018] The LED flash source 13 is positioned inside the cylindrical body 10 in a manner that allows it to emit a flash of light towards the light guide member 12 located in the flash illumination window. Figure 3 shows a perspective view from below of an example of the cylindrical body 10 and ceiling member 11. For example, as shown in Figure 3, the inner surface of the ceiling member 11 (the surface facing the cylindrical body 10) may have a section for arranging the LED flash source 13 in the lower part of the flash illumination window. The light guide member 12 allows the flash emitted from the LED flash source 13 to be emitted outwards through the flash illumination window.

[0019] Examples of LED flashing light sources 13 include LED modules. The LED flashing light source 13 includes a substrate 13a and LEDs 13b, as shown in Figure 1, with the LEDs 13b arranged on the substrate 13a. In the example shown in Figure 1, there are two LED flashing light sources 13, but there may be one LED flashing light source 13 or three or more.

[0020] The mounting conditions for the LEDs 13b on substrate 13a are not particularly limited and can be set as appropriate according to the desired optical characteristics. Figure 1 shows an example in which 72 LEDs 13b, consisting of two 4×9=36 matrix arrays, are mounted on substrate 13a.

[0021] The shape of LED13b is not particularly limited and is generally square or rectangular. The size of LED13b is not particularly limited; in the case of a square, the length of one side is, for example, 1.8~2.2mm, 3~3.5mm, or 4~5.3mm, and in the case of a rectangle, the length of the shorter side is, for example, the same as the length of the square, and the ratio of the shorter side to the longer side is, for example, 1:1~3. On the mounting surface of LED13b on substrate 13a, the width between adjacent LEDs is, for example, 0.2~0.5mm.

[0022] The LED flash light source 13 includes a lens member 13c, as shown in the partially enlarged perspective view of Figure 4 and the cross-sectional view of Figure 5, for example. The lens member 13c is positioned above the LED 13b, and the lens member 13c may be a lens member that provides a uniform illuminance distribution on the irradiation surface of the flash light emitted from the LED 13b. Examples of the lens member 13c include a fly-eye lens and an integrator lens. For example, as shown in Figure 5, by dividing the lens member 13c into two or more parts so that it does not become too large, the load on the lens member 13c can be further reduced and damage can be prevented. It is preferable that the lens member 13c is not made too small so that there is no loss in the extraction of the irradiated flash light.

[0023] The runway-embedded flashing device 1 of this embodiment may further include, for example, a heat dissipation member 13d, as shown in Figure 5, and the heat dissipation member 13d may be positioned on the substrate 13a of the LED flashing light source 13 on the side opposite to the mounting surface of the LED 13b. In Figure 5, an example is shown where the heat dissipation member 13d is a heat dissipation fin, but it is also possible to dissipate heat using a fan or the like that blows air toward the substrate 13a.

[0024] In this embodiment, it is preferable that the runway-embedded flashing device 1 emits an upward flashing light with an angle α of about 3° with respect to the direction parallel to the runway surface, for example, as shown in Figure 10. An example of the light guide member 12 and LED flashing light source 13 inside the runway-embedded flashing device 1 shown in Figure 10 is shown in Figure 11.

[0025] While a flashing device using a xenon flashing light source weighs 65 kg or less, specifically around 40 kg, the runway-embedded flashing device 1 of this embodiment weighs, for example, 18 kg or less, specifically around 11 kg. Thus, according to this embodiment, a lightweight runway-embedded flashing device can be provided.

[0026] While the lifespan of a flashing device using a xenon flashing light source is approximately 500 hours, the runway-embedded flashing device 1 of this embodiment can be used indefinitely, for example. Thus, according to this embodiment, it is possible to provide a runway-embedded flashing device with a long lifespan.

[0027] While the effective luminous intensity of a flashing device using a xenon flashing light source is 1000 cd or more, specifically around 1200 cd, the effective luminous intensity of the runway-embedded flashing device 1 of this embodiment is, for example, 6000 cd or more, specifically around 7000 cd. Thus, according to this embodiment, it is possible to provide a runway-embedded flashing device with high effective luminous intensity.

[0028] While flashing devices using xenon flashing light sources cannot switch between high, medium, and low luminosity levels, the runway-embedded flashing device 1 of this embodiment has a high effective luminosity, as described above, making it possible to switch between luminosity levels such as high (e.g., 6000 cd or more), medium (e.g., 1000 cd or more), and low (e.g., 250 cd or more). Thus, this embodiment makes it possible to provide a runway-embedded flashing device with switchable luminosity levels. The high luminosity level is used, for example, during the daytime when visibility is poor due to fog, rain, etc., the low luminosity level is used, for example, at night, and the medium luminosity level is used, for example, in the evening.

[0029] While a flashing device using a xenon flashing light source consumes approximately 500W, the runway-embedded flashing device 1 of this embodiment consumes approximately 80W (maximum 114W at high brightness, 31W at medium brightness, and 24W at low brightness). Thus, this embodiment makes it possible to provide a runway-embedded flashing device with low power consumption.

[0030] [Embodiment 2] Figure 6 is an exploded perspective view showing the configuration of an example of a runway-embedded flashing device of this embodiment, and Figure 7 is a perspective view from below of the runway-embedded flashing device shown in Figure 6. As shown in Figures 6 and 7, the runway-embedded flashing device 1 of this embodiment is the same as the runway-embedded flashing device of Embodiment 1, except that it further includes a bottom cover member 16.

[0031] The bottom cover member 16 is positioned to close the lower opening of the cylindrical body 10. Examples of materials for the bottom cover member 16 include aluminum, titanium, aluminum alloy, titanium alloy, or castings thereof.

[0032] Figure 8 shows a side view of an example of the bottom cover member 16. For example, as shown in Figure 8, the bottom cover member 16 may include a cable gland 16a and an external ground terminal 16b. Furthermore, by attaching the bottom cover member 16 to at least one of the cylindrical body 10 and the LED flashing light source 13, for example, with screws 16c and O-rings (not shown), the runway embedded flashing device 1 can be made waterproof.

[0033] [Embodiment 3] Figure 9 is a schematic perspective view showing an example of the configuration of a runway in this embodiment. In Figure 9, although it is schematically simplified, the runway 2 is formed by embedding the runway-embedded flashing device 1 of Embodiment 1 or 2 with the ceiling member 11 exposed.

[0034] Although the present invention has been described above with reference to embodiments, the present invention is not limited to the above embodiments. Various modifications to the structure and details of the present invention can be made, as can be understood by those skilled in the art within the scope of the present invention.

[0035] Some or all of the above embodiments may also be described as follows, but are not limited to the following. (Note 1) It includes a cylindrical body, a ceiling member, a light guide member, and an LED flashing light source. The aforementioned cylindrical body can be embedded in the runway. The ceiling member is positioned at the upper opening of the cylindrical body so as to be exposed to the runway surface when the cylindrical body is embedded in the runway. The ceiling member is provided with a window for flashing light, The light guide member is positioned in the flashing light irradiation window, The LED flashing light source is arranged inside the cylindrical body in such a state that it can emit a flash of light towards the light guide member located in the flashing light illumination window. The light guide member allows the flash emitted from the LED flash source to be projected outwards through the flash illumination window. Runway-embedded flashing device. (Note 2) The cylindrical body and the ceiling member are integrally molded products. Runway-embedded flashing device as described in Appendix 1. (Note 3) The LED flashing light source includes a substrate, an LED, and a lens member. The LED is placed on the substrate, The lens member is positioned above the LED. The aforementioned lens member is a lens member that makes the illumination surface of the flash of light emitted from the LED uniform in terms of illuminance distribution. Runway-embedded flashing device as described in Appendix 1 or 2. (Note 4) Furthermore, it includes a heat dissipation component, The heat dissipation member is positioned on the substrate of the LED flashing light source on the side opposite to the surface on which the LED is mounted. Runway-embedded flashing device as described in Appendix 3. (Note 5) The ceiling member includes an upper ceiling section and a lower ceiling section, The upper ceiling section is positioned rearward from the direction of illumination of the flashing light window. The lower ceiling section is positioned on the side of the flashing light irradiation window that is in the direction of irradiation. A runway-embedded flashing device as described in any of the appendices 1 to 4. (Note 6) Furthermore, including a reinforcing plate member, The reinforcing plate member is positioned on the outer surface of the lower ceiling portion in an upright position in the vertical direction of the outer surface of the lower ceiling portion. Runway-embedded flashing device as described in Appendix 5. (Note 7) The aforementioned flash illumination windows consist of two or more, and the light guide member is arranged in each of the flash illumination windows. A runway-embedded flashing device as described in any of the appendices 1 to 6. (Note 8) Furthermore, including a fixing member, The fixing member is arranged on the outer periphery of the ceiling member. The fixing member is provided with screw holes for passing screws through which screws are used to fix it to the runway. A runway-embedded flashing device as described in any of the appendices 1 to 7. (Note 9) The ceiling member and the fixing member are integrally molded products. Runway-embedded flashing device as described in Appendix 8. (Note 10) Furthermore, including the bottom cover member, The bottom cover member is positioned to close the lower opening of the cylindrical body. A runway-embedded flashing device as described in any of the appendices 1 to 9. (Note 11) The bottom cover member includes a cable gland and an external ground terminal. Runway-embedded flashing device as described in Appendix 10. (Note 12) A runway in which a runway-embedded flashing device described in any of the appendices 1 to 11 is embedded. [Industrial applicability]

[0036] According to the present invention, it is possible to provide a new runway-embedded flashing device that is lightweight, has a long lifespan, high effective luminous intensity, allows for luminous intensity switching, and consumes little power. [Explanation of symbols]

[0037] 1. Runway-embedded flashing device Runway 2 10. Cylindrical body 11 Ceiling components 11a Upper ceiling section 11b Lower ceiling section 12 Light guide member 13 LED flash light source 13a substrate 13b LED 13c lens component 13d Heat dissipation component 14 Reinforcement plate member 15 Fixing member 16 Bottom cover member 16a Cable Gland 16b External ground terminal 16c screw

Claims

1. It includes a cylindrical body, a ceiling member, a light guide member, and an LED flashing light source. The aforementioned cylindrical body can be embedded in the runway. The ceiling member is positioned at the upper opening of the cylindrical body so as to be exposed to the runway surface when the cylindrical body is embedded in the runway. The ceiling member is provided with a window for flashing light, and on the inner surface of the ceiling member, on the side facing the cylindrical body, a portion for arranging the LED flashing light source is provided in the lower part of the flashing light source window, such that the substrate of the LED flashing light source is arranged parallel to the inner surface of the ceiling member. The light guide member is positioned in the flashing light irradiation window, The LED flashing light source includes an LED module and a plate-shaped lens member, and is positioned within the cylindrical body parallel to the inner surface of the ceiling member in a manner that allows it to emit a flash of light towards the light guide member located in the flashing light illumination window. The light guide member allows the flash emitted from the LED flash source to be projected in only one direction outwards from the flash illumination window. Runway-embedded flashing device.

2. The ceiling member includes an upper ceiling section and a lower ceiling section, The upper ceiling section is positioned rearward from the direction of illumination of the flashing light window. The lower ceiling section has a stepped structure positioned on the side of the flash irradiation window that is in the direction of irradiation. The aforementioned stepped structure is in one location. The runway-embedded flashing device according to claim 1.

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