Light shielding cover for floodlight, balloon for floodlight, floodlight, and light shielding method for floodlight

Abstract

To restrict an illumination range in a ballooned projector capable of lighting the whole circumference.SOLUTION: A light shielding cover for a projector comprises a light shielding part that is used in a projector comprising a balloon-shaped part, which is inflated and whose interior is illuminated, and that has a light shielding function; an upper fixing part fixed to the upper side of the balloon-shaped part; and a lower fixing part fixed to the lower side of the balloon-shaped part. When the upper fixing part and the lower fixing part are fixed and the balloon-shaped part is inflated, the surface of the balloon-shaped part is in close contact with at least a partial region of the light shielding part, thereby fixing the light shielding part around the balloon-shaped part.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a floodlight that provides ambient lighting for road construction, building works, various events, and the like, and in particular to a floodlight light-shielding cover used for the floodlight whose interior is illuminated by a lighting unit and inflated by a blower unit, a floodlight balloon equipped with a balloon and a light-shielding cover, a floodlight equipped with a light-shielding cover, and a light-shielding method for a floodlight. [Background technology]

[0002] When floodlights are used to illuminate the surroundings of road construction, building works, and various events, it is preferable that they illuminate a wide area with appropriate brightness. Currently, there are various types of floodlights that take into account various circumstances.

[0003] Patent Document 1 describes a balloon-type lighting device that includes a balloon, a blower for inflating the balloon, and a light source, and illuminates the surroundings with light emitted from the light source to the outside through the balloon. Unlike spotlight-type floodlights, such balloon-type lighting devices have the advantage of illuminating the surroundings uniformly.

[0004] However, when a floodlight is used, if there are houses nearby, excessive illumination of the houses may be a nuisance, i.e., light pollution. In consideration of such a situation, Patent Document 2 discloses the use of an LED panel for a floodlight, which has a high-density LED element area where LED elements are arranged relatively densely and a low-density LED element area adjacent to the high-density LED element area where LED elements are arranged relatively low density. By using such a floodlight, it is possible to make the brightness different between the vicinity of the floodlight and the distant area. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2015-191690 A [Patent Document 2] JP 2019-29155 A Summary of the Invention [Problem to be solved by the invention]

[0006] The floodlight of Patent Document 2 makes it possible to vary the brightness of the light near and far from the floodlight. However, with a balloon-type floodlight that can illuminate the surroundings evenly, the lighting angle becomes important. That is, it is conceivable that one would like to illuminate one direction where construction work is being carried out, but not the other direction where a house is located. However, this cannot be achieved with the floodlight of Patent Document 2. [Means for solving the problem]

[0007] The light-shielding cover for a floodlight according to the present invention has an object to solve the above-mentioned problems, and therefore employs the following configuration. Used in a floodlight having a balloon-shaped portion that expands to illuminate the interior, A light-shielding portion having a light-shielding function; provided above the light-shielding portion, An upper fixing part fixed to an upper side of the balloon-shaped part; provided below the light-shielding portion, A lower fixing part fixed to the lower side of the balloon-shaped part, The upper fixing portion and the lower fixing portion only Fix the The upper and lower fixing parts By moving the light blocking portion located between the light blocking portions, the light blocking range by the light blocking portion can be changed. 、 When the balloon-shaped portion is inflated, the surface of the balloon-shaped portion comes into close contact with at least a partial region of the light-shielding portion, thereby fixing the light-shielding portion to the periphery of the balloon-shaped portion. Shading cover for spotlight.

[0008] Furthermore, the light-shielding cover for a floodlight according to the present invention is When the upper fixing part and the lower fixing part are fixed, The light-shielding portion forms a first side extending from the top to the bottom of the balloon-shaped portion and a second side, and shields a region between the first side and the second side from light.

[0009] Furthermore, the light-shielding cover for a floodlight according to the present invention is At least one of the upper fixing portion and the lower fixing portion is fixed to an internal frame located inside the balloon-shaped portion.

[0010] Furthermore, the light-shielding cover for a floodlight according to the present invention is The lower fixing portion is fixed to a support column that supports the floodlight.

[0011] Furthermore, the light-shielding cover for a floodlight according to the present invention is At least one of the upper fixing portion and the lower fixing portion is fixed to the balloon-shaped portion.

[0012] Furthermore, the light-shielding cover for a floodlight according to the present invention is At least one of the upper fixing portion and the lower fixing portion is extendable between the upper fixing portion and the lower fixing portion. The light-shielding portion has elastic properties and is pulled in the vertical direction. .

[0013] Furthermore, in the light-shielding cover for a floodlight according to the present invention, The light blocking portion has a first region and a second region having higher air permeability than the first region.

[0014] Furthermore, in the light-shielding cover for a floodlight according to the present invention, The rear surface of the light blocking portion has a property of reflecting light.

[0015] In addition, the balloon for a floodlight according to the present invention is Used in a floodlight having a balloon-shaped portion that expands to illuminate the interior, A light-shielding portion having a light-shielding function; provided above the light-shielding portion, An upper fixing part fixed to an upper side of the balloon-shaped part; provided below the light-shielding portion, A lower fixing part fixed to the lower side of the balloon-shaped part, The upper fixing portion and the lower fixing portion only Fix the The upper fixing portion and the lower fixing portion By moving the light blocking portion located between the light blocking portions, the light blocking range by the light blocking portion can be changed. 、 When the balloon-shaped portion is inflated, the surface of the balloon-shaped portion comes into close contact with at least a partial area of ​​the light-shielding portion, thereby fixing the light-shielding portion to the periphery of the balloon-shaped portion.

[0016] Further, the floodlight according to the present invention comprises: A floodlight having a balloon-shaped portion that expands and illuminates the interior thereof, A light-shielding portion having a light-shielding function; provided above the light-shielding portion, An upper fixing part fixed to an upper side of the balloon-shaped part; provided below the light-shielding portion, a lower fixing portion fixed to the underside of the balloon-shaped portion; The upper fixing part and the lower fixing part only Fixed, The upper fixing portion and the lower fixing portion By moving the light blocking portion located between the light blocking portions, the light blocking range by the light blocking portion can be changed. 、 When the balloon-shaped portion is inflated, the surface of the balloon-shaped portion comes into close contact with at least a partial area of ​​the light-shielding portion, thereby fixing the light-shielding portion to the periphery of the balloon-shaped portion.

[0017] Further, a method for shading a floodlight according to the present invention includes the steps of: Used in a floodlight having a balloon-shaped portion that expands to illuminate the interior, A light-shielding portion having a light-shielding function; provided above the light-shielding portion, An upper fixing part fixed to an upper side of the balloon-shaped part; provided below the light-shielding portion, a lower fixing part that is fixed to the underside of the balloon-shaped part; Only the upper fixing portion and the lower fixing portion are fixed, The upper and lower fixing parts By moving the light blocking portion located between the light blocking portions, the light blocking range by the light blocking portion can be changed. 、 When the balloon-shaped portion is inflated, the surface of the balloon-shaped portion is brought into close contact with at least a partial area of ​​the light-shielding portion, thereby fixing the light-shielding portion to the periphery of the balloon-shaped portion. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a diagram showing an entire floodlight according to an embodiment of the present invention. [Diagram 2] FIG. 4 is a diagram showing an internal configuration of a balloon-shaped portion according to the embodiment. [Diagram 3] FIG. [Figure 4] FIG. 2 is a three-dimensional perspective view of a light-shielding cover according to the embodiment. [Diagram 5] 5A to 5C are diagrams for explaining attachment of a light-shielding cover according to the embodiment. [Figure 6] 11A and 11B are diagrams showing how the floodlight is illuminated when the light-shielding cover according to the embodiment is used. [Figure 7] 11A and 11B are diagrams for explaining adjustment of the light-shielding angle when the light-shielding cover according to the embodiment is used. [Figure 8] 4A and 4B are diagrams showing how the floodlight according to the embodiment is stored. [Figure 9] FIG. 13 is a diagram showing the shape of a balloon-shaped portion according to another embodiment. [Figure 10] 13A to 13C are diagrams showing various fixing methods for the upper part of the balloon-shaped portion according to other embodiments. [Figure 11] 13A to 13C are diagrams showing various fixing methods for the lower part of the balloon-shaped section according to other embodiments. [Figure 12] 13A to 13C are diagrams showing various fixing methods for the upper part of the balloon-shaped portion according to other embodiments. [Figure 13] FIG. 13 is a diagram showing a form in which a light-shielding cover according to another embodiment is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Floodlight 1 according to the present invention is used in places such as construction sites and venues where various events are held, and is a device intended to illuminate darkness at night or the like.

[0020] FIG. 1 is a diagram showing the whole floodlight 1 according to this embodiment. The floodlight 1 according to this embodiment is a type that can be transported by a dolly 42, and is configured to include a balloon-shaped portion 10 and an internal frame 20. In FIG. 1, a frame lower portion 21 of the internal frame 20 housed in the balloon-shaped portion 10 can be seen. The external configuration of the floodlight 1 includes the dolly 42, a generator 41, a support 30, and a power feeder 43 that feeds power from the generator 41 to the floodlight 1. The support 30 is made up of unit supports 31a to 31d, and is extendable. FIG. 1 shows the floodlight 1 in use, with the support 30 in an extended state. The floodlight 1 is transported to a construction site or an event venue, and light is projected after the support 30 is adjusted to an appropriate height as shown in FIG. 1.

[0021] FIG. 2 is a diagram showing the internal configuration of the balloon-shaped portion 10 according to this embodiment. As described in FIG. 1, an internal frame 20 is provided inside the balloon-shaped portion 10. The internal frame 20 is configured to include an air blowing section 27 for inflating the balloon-shaped portion 10, and an illumination section 28. The air blowing section 27 takes air into the balloon-shaped portion 10 from below the balloon-shaped portion 10. The illumination section 28 of this embodiment uses six LED panels and illuminates the balloon-shaped portion 10 from the inside. The illumination section 28 can be of various forms, including not only LEDs but also incandescent bulbs, metal halide lamps, etc.

[0022] The internal frame 20 has an upper portion referred to as an upper frame 22 and a lower portion referred to as a lower frame 21. An upper mounting portion 23 made of the same fabric material as the balloon-shaped portion 10 is attached to the underside of the upper frame 22. A peripheral fixing portion 231 (in this embodiment, a fastener) is provided around the periphery of the upper mounting portion 23, which is fixed to the upper portion of the balloon-shaped portion 10. A lower mounting portion 24 is similarly attached to the underside of the lower frame 21. A peripheral fixing portion 241 (in this embodiment, a fastener) is provided around the periphery of the lower mounting portion 24, which is fixed to the lower portion of the balloon-shaped portion 10.

[0023] A balloon storage bag 25 is provided on the upper surface of the frame upper part 22. A storage fastener 251 is provided on the balloon storage bag 25, and the balloon storage bag can be removed from the inside by opening the storage fastener 251. A part of the balloon storage bag is fixed to the frame upper part 22, and when the floodlight 1 is stored, it can cover the balloon-shaped portion 10 and the internal frame 20.

[0024] FIG. 3 is a development view of the light-shielding cover 5 according to this embodiment. The light-shielding cover 5 is configured to have an upper light-shielding cloth 51, a side light-shielding cloth 52, and a lower light-shielding cloth 53. The upper light-shielding cloth 51, the side light-shielding cloth 52, and the lower light-shielding cloth 53 are fan-shaped cloths with a light-shielding function. As the light-shielding function of this embodiment, the upper light-shielding cloth 51, the side light-shielding cloth 52, and the lower light-shielding cloth 53 are black to suppress light transmission. As the light-shielding function, not only this form but also various forms can be adopted. For example, the light-shielding cover 5 can be in various colors other than black. In addition, the colors of the front and back surfaces of the light-shielding cover 5 may be different. For example, by giving the back surface of the light-shielding cover 5 a light-reflecting property (for example, silver color, etc.), the light-shielding performance can be improved and the light reflected on the back surface can be guided to the non-light-shielding part of the balloon-shaped portion 10, and the light quantity of the floodlight 1 can be improved.

[0025] In the upper light-shielding cloth 51, the outer periphery of the sector-shaped portion is fixed to the upper side of the side light-shielding cloth 52 (sewn together in this embodiment). The center of the upper light-shielding cloth 51 is formed in an arc shape, forming unit sides A1 and B1 extending from the central arc portion to the outer periphery. An upper fixing part 55 is provided at one end of the unit side B1. The upper fixing part 55 is configured to have a rubber belt 552 and a locking part 551 on one side, and a belt 554 and a locked part 553 on the other side. When the light-shielding cover 5 is fixed to the floodlight 1, the locking part 551 is fixed to the locked part 553. The upper fixing part 55 is fixed to the upper side of the balloon-shaped part 10. Note that the upper side of the balloon-shaped part 10 may be fixed not only to the upper side of the balloon-shaped part 10 itself, but also to a form that can be fixed to the upper side of the balloon-shaped part 10. In this embodiment, by fixing to the upper part of the internal frame 20, it is possible to fix to the upper side of the balloon-shaped portion 10.

[0026] A storage bag 54 is provided on the upper part of the side shading cloth 52. When the shading cover 5 is removed, the storage bag 54 stores the other components of the shading cover 5 (upper shading cloth 51, side shading cloth 52, lower shading cloth 53, etc.) inside, making it easy to carry. In addition, since the storage bag 54 is fixed to the side shading cloth 52, there is no risk of it being lost. In addition, when attached to the floodlight 1, the storage bag 54 is sandwiched between the balloon-shaped portion 10 and the upper shading cloth 51 or the side shading cloth 52. For this reason, it is preferable to use a material (cloth) having a shading function for the storage bag 54 as well, like the upper shading cloth 51, etc.

[0027] The lower light-shielding cloth 53 has a sector shape and a mesh cloth 53a is provided in the central part. As with the upper light-shielding cloth 51, a lower fixing part 56 is provided in the upper part of the central arc. The lower fixing part 56 is configured with a rubber belt 562, a locking part 561, a belt 564, and a locked part 563. The locking part 561 of the lower fixing part 56 can be connected to the locked part 563. The lower fixing part 56 is fixed to the underside of the balloon-shaped part 10. Note that the underside of the balloon-shaped part 10 may be fixed not only to the underside of the balloon-shaped part 10 itself, but also to a form that can be fixed to the underside of the balloon-shaped part 10. In this embodiment, by fixing to the support 30, it is possible to fix to the underside of the balloon-shaped part 10.

[0028] 4 is a three-dimensional perspective view of the assembled light-shielding cover 5. An upper light-shielding cloth 51, a side light-shielding cloth 52, and a lower light-shielding cloth 53 form the light-shielding section 50. This light-shielding section 50 is located on the surface of the balloon-shaped section 10, and blocks light emitted from the surface of the balloon-shaped section 10 so as not to leak to the outside.

[0029] One end of the upper light shielding cloth 51, the side light shielding cloth 52, and the lower light shielding cloth 53 forms a first side A. The other end of these forms a second side B. As can be seen from FIG. 4, the light shielding cover 5 of this embodiment is shaped so as to be able to cover up to 2 / 3 of the balloon-shaped portion 10. When fixed, the mesh cloth 53a is located below the internal frame 20 so as not to impede the intake of air by the air blowing portion 27. In this way, the light shielding portion 50 is provided with a first region (upper light shielding cloth 51, etc.) and a second region (mesh cloth 53a) that is more breathable than the first region, and is effective in terms of air blowing, waste heat, etc. for a balloon-type floodlight 1 that requires air blowing.

[0030] Fig. 5 is a diagram for explaining the attachment of the light-shielding cover 5 according to this embodiment. Fig. 5(B) shows that the light-shielding cover 5 in this embodiment is attached by fixing its upper and lower parts to the internal frame 20. Fig. 5(A) is a diagram showing the attachment of the upper part. The upper part of the light-shielding cover 5 is attached by arranging the upper fixing part 55 below the upper frame part 22 and connecting the locking part 551 and the locked part 553 to each other.

[0031] On the other hand, the lower part of the light-shielding cover 5 is fixed by joining the locking part 561 and the locked part 563 to each other while sandwiching the support 30 as shown in Fig. 5(B). Fig. 5(C) shows a state in which the light-shielding cover 5 is attached with the balloon-shaped part 10 inflated. As shown in Fig. 5(C), after the light-shielding cover 5 is attached, the light-shielding part 50 can be expanded in the direction shown by the arrow, thereby making it possible to realize a free light-shielding angle for the floodlight 1.

[0032] In this embodiment, the light-shielding cover 5 is fixed by utilizing the expansion of the balloon-shaped portion 10. When the balloon-shaped portion 10 expands due to the air blown by the air blowing portion 27, the light-shielding portion 50 located on the surface of the balloon-shaped portion 10 comes into close contact with the balloon-shaped portion 10, and the light-shielding cover 5 is not easily movable. In particular, since the light-shielding portion 50 is fixed by the upper fixing portion 55 and the lower fixing portion 56, the surface of the balloon-shaped portion 10 and the inner surface of the light-shielding portion 50 come into close contact with each other at the first side A and the second side B formed by the light-shielding portion 50 and in the vicinity thereof. In order to make the surface of the balloon-shaped portion 10 and the inner surface of the light-shielding portion 50 come into close contact with each other, the vertical length of the surface of the balloon-shaped portion 10 is set to be the same as or slightly longer than the vertical length of the light-shielding cover 5, so that the expanding force of the balloon-shaped portion 10 can be used to fix the light-shielding portion 50.

[0033] Furthermore, in this embodiment, the upper fixing part 55 and the lower fixing part 56 are provided with rubber belts 552 and 562, which act in the vertical direction to apply an elastic force, and the surface of the balloon-shaped part 10 and the inner surface of the light-shielding part 50 can be in close contact with each other in the vicinity of the first side A and the second side B. In this way, the upper fixing part 55 and the lower fixing part 56 in this embodiment are provided with an elastic force to ensure sufficient close contact, but the elasticity of either the upper fixing part 55 or the lower fixing part 56 may be limited to one of them. Various forms can be adopted between the upper fixing part 55 and the lower fixing part 56 as long as they have elastic properties that allow them to expand and contract.

[0034] In addition, the length of at least one of the upper fixing part 55 and the lower fixing part 56 may be adjustable. By adjusting the length of at least one of the upper fixing part 55 and the lower fixing part 56, it is possible to adjust the light-shielding part 50 so as to be in close contact with the surface of the balloon-shaped part 10.

[0035] It is considered that the adhesion can be improved not only by the upper fixing part 55 and the lower fixing part 56 but also by the light-shielding part 50. For example, the light-shielding part 50 may have elasticity by sewing rubber to the first side A and the second side B formed by the light-shielding part 50. The first side A and the second side B can expand and contract to allow the light-shielding part 50 to adhere closely to the surface of the balloon-shaped part 10.

[0036] The light-shielding cover 5 can be attached not only when the balloon-shaped portion 10 is inflated as shown in Fig. 5(C) but also when it is deflated. The light-shielding cover 5 can be expanded to a required size when the balloon-shaped portion 10 is deflated, and then the balloon-shaped portion 10 can be inflated, making it easy to adjust the light-shielding angle.

[0037] 6 is a diagram showing the illumination state of the floodlight 1 when the light-shielding cover 5 according to this embodiment is used. The balloon-shaped portion 10 fixed to the upper part of the support 30 is in a state where a part of it is covered with the light-shielding cover 5. The first side A is located at the boundary between the light-shielding cover 5 and the illuminated part of the balloon-shaped portion 10. As described above, in the vicinity of the first side A and the second side B (not shown), the inner surface of the light-shielding portion 50 and the surface of the balloon-shaped portion 10 are in close contact with each other, and the light-shielding cover 5 is not easily moved.

[0038] A sign sheet 44 is provided on the surface of the balloon-shaped portion 10 in this embodiment. The sign sheet 44 is a sheet on which a notice for pedestrians, such as "Construction in progress, sorry for the inconvenience," is printed, and is fixed to the surface of the balloon-shaped portion 10 using a fastener such as a hook-and-loop fastener. Unlike the light-shielding cover 5, the sign sheet 44 is made of a material (such as cloth) that transmits light as much as possible, so as not to interfere with the illumination by the balloon-shaped portion 10 as much as possible.

[0039] Fig. 7 is a diagram for explaining the adjustment of the light-shielding angle when the light-shielding cover 5 according to this embodiment is used. Fig. 7(A) to Fig. 7(D) are plan views seen from above the balloon-shaped portion 10, showing the state in which the light-shielding cover 5 is attached to the balloon-shaped portion 10. The balloon-shaped portion 10 and the light-shielding cover 5 used in Fig. 7(A) to Fig. 7(D) are the same.

[0040] 7(A) shows the light-shielding portion 50 in its most expanded state. In this case, 2 / 3 of the balloon-shaped portion 10 is covered with the light-shielding cover 5, and light is irradiated from the remaining 1 / 3 of the balloon-shaped portion 10. As described above, the balloon-shaped portion 10 and the light-shielding cover 5 are in close contact with each other near the first side A and the second side B.

[0041] Fig. 7(B) shows a state in which half of the balloon-shaped portion 10 is light-shielded. For example, it is possible to change from the state shown in Fig. 7(A) to the state shown in Fig. 7(B) by moving the first side A and the second side B. Even in the state shown in Fig. 7(B), the balloon-shaped portion 10 and the light-shielding cover 5 are firmly attached and fixed in the vicinity of the first side A and the second side B, so that the light-shielding cover 5 will not easily move due to wind or the like.

[0042] FIG. 7(C) shows a state in which about 1 / 4 of the balloon-shaped portion 10 is covered with the light-shielding cover 5. FIG. 7(D) shows a state in which the light-shielding cover 5 is fully retracted. For example, if there is no need for light shielding when using the floodlight 1, it is possible to achieve a wide irradiation angle similar to that in the state in which the light-shielding cover 5 is not attached by fully retracting the light-shielding cover 5 as shown in FIG. 7(D). In addition, since there is no need to remove the light-shielding cover 5, the hassle of removing and attaching the light-shielding cover 5 is reduced, and light shielding can be performed quickly when necessary.

[0043] 7(A) to 7(D), the light-shielding cover 5 according to this embodiment can freely adjust its light-shielding angle. In particular, the light-shielding cover 5 and the balloon-shaped portion 10 are firmly attached to each other in the areas near the first side A and the second side B, and are not easily moved by wind or the like.

[0044] FIG. 8 is a diagram showing how the floodlight 1 according to this embodiment is stored. In this embodiment, the internal frame 20 and the balloon-shaped portion 10 can be stored in the balloon storage bag 26 stored in the balloon storage storage bag 25. When the floodlight 1 is not used, the balloon storage bag 26 is removed from the balloon storage storage bag 25 and the balloon-shaped portion 10 is covered with the balloon storage bag 26, so that the floodlight 1 can be securely protected from rain and dust. At that time, in this embodiment, the light-shielding cover 5 in the attached state can also be stored together. FIG. 8 shows a state in the middle of storage, and as shown in FIG. 8, the balloon-shaped portion 10 and the light-shielding cover 5 are stored in the balloon storage bag 26. After the balloon-shaped portion 10 and the light-shielding cover 5 are covered with the balloon storage bag 26, the fastener 26a provided on the balloon storage bag 26 is closed, so that the balloon-shaped portion 10 and the light-shielding cover 5 can be stored in the balloon storage bag 26 and protected from rain and dust.

[0045] As described above, the light-shielding cover 5 according to this embodiment can block a part of the balloon-type floodlight 1 that illuminates the entire periphery, thereby making it possible to reduce light damage (light pollution) that occurs when working in a residential area, etc. Furthermore, the light-shielding range (angle) can be freely adjusted, making it possible to provide appropriate lighting according to the work site.

[0046] Next, various modifications of this embodiment will be described. (First Modification) In the above embodiment, the balloon-shaped portion 10 has a so-called barrel shape formed by the upper light-shielding cloth 51, the side light-shielding cloth 52, and the lower light-shielding cloth 53. The shape of the balloon-shaped portion 10 is not limited to this barrel shape, and various other shapes can be adopted.

[0047] FIG. 9 shows various shapes of the balloon-shaped portion 10. FIG. 9(A1) and FIG. 9(A2) show an onion shape in which multiple pieces of fabric are joined vertically. FIG. 9(A2) shows a shape that is flatter in the horizontal direction than FIG. 9(A1). FIG. 9(B) shows a UFO shape that has an elliptical shape when viewed from the side. FIG. 9(C) shows a shape called a slim type in which gathers are formed at the top and bottom and the sides are linear. When using a light-shielding cover 5 for these various balloon-shaped portions, it is preferable to use a light-shielding cover 5 that is suitable for the shape in any shape. In particular, the first side A and the second side B can be made to have approximately the same length as the balloon-shaped portion 10 to increase adhesion.

[0048] (Second Modification) In the above embodiment, a belt-type upper fixing part 55 is used and is attached to the frame upper part 22 of the internal frame 20 in which the lighting part 28 and the air blowing part 27 are provided. The light-shielding cover 5 can be fixed at the upper position in not only this manner but also various other manners. Fig. 10 is a diagram showing various methods of fixing the light-shielding cover 5 to the upper part of the balloon-shaped part 10.

[0049] 10(A) shows an example in which the upper part of the light-shielding cover 5 is fixed to the balloon storage bag 25. In this case, the method of fixing the balloon-shaped part 10 to the balloon storage bag 25 can be an upper fixing part 55 having various forms such as a string, a tape, a rubber band, a hook-and-loop fastener, a buckle, a carabiner, or a clip.

[0050] Fig. 10(B) shows a fixing form in which the balloon-shaped portion 10 and the light-shielding cover 5 are directly fixed. As the upper fixing portion 55 for fixing the balloon-shaped portion 10 and the light-shielding cover 5, various forms such as string, tape, rubber, hook-and-loop fastener, buckle, carabiner, clip, etc. can be adopted. Fig. 10(C) shows a form in which the upper portion of the light-shielding cover 5 is fixed to the upper portion of the internal frame 20 by a screw portion 55a. In this example, the fixing strength is increased by fixing the upper two points of the light-shielding cover 5 by clips 55b.

[0051] FIG. 10(D) shows a form in which the balloon-shaped portion 10 is fixed to the upper surface of the upper frame portion 22. Various forms such as strings, tapes, rubber, hook-and-loop fasteners, buckles, carabiners, clips, etc. can be used as the fixing form. In the form shown in FIG. 10(D), a string 55d provided on the light-shielding cover 5 side is fixed to an annular portion 55c provided on the upper surface of the upper frame portion 22. In FIG. 10(E), a hole 55f is provided on the upper portion of the light-shielding cover 5, and the light-shielding cover 5 is hooked onto a protrusion 55e provided on the upper surface of the inner frame 20 for fixing. As described above, various forms are possible for fixing the balloon-shaped portion 10 and the light-shielding cover 5, such as (1) directly fixing the light-shielding cover 5 to the balloon-shaped portion 10 itself, (2) fixing the light-shielding cover 5 to the inner frame 20, and fixing by combining (1) and (2).

[0052] (Third Modification) Figure 11 is a diagram showing various configurations of the lower fixing part 56. Figure 11(A) shows a configuration in which the light-shielding cover 5 is fixed to the support pole 30, similar to the previously described embodiment. The lower fixing part 56 (string 56a in the case of Figure 11(A)) is provided so as to straddle the support pole 30. The lower fixing part 56 may be in various configurations, such as a string, tape, rubber, hook-and-loop fastener, buckle, carabiner, clip, etc.

[0053] FIG. 11(B) shows a form in which the light-shielding cover 5 is fixed to the balloon-shaped portion 10 itself. In this case, the surface of the balloon-shaped portion 10 and the light-shielding cover 5 are directly fixed to each other. As the lower fixing portion 56, various forms such as a string, tape, rubber, hook-and-loop fastener, buckle, carabiner, etc. are conceivable, as described above. FIG. 11(C) shows a form in which a part of the light-shielding cover 5 is fixed by being sandwiched between the internal frame 20. In the case of FIG. 11(C), the fixing strength is further increased by fixing at two places with clips 56b. FIG. 11(D) shows a form in which the lower portion of the internal frame 20 and the light-shielding cover 5 are fixed. In the case of FIG. 11(D), a ring-shaped portion 56c provided at the lower portion of the internal frame 20 and a string 56d on the light-shielding cover 5 side are fixed to each other. As the lower fixing portion 56, a string, tape, rubber, hook-and-loop fastener, buckle, carabiner, etc. can be used. FIG. 11(E) shows a form in which a hole 56f is provided in the lower part of the light-shielding cover 5, and the light-shielding cover 5 is hooked onto a protrusion 56e provided on the lower surface of the inner frame 20 to be fixed.

[0054] In this way, it is possible to adopt various fixing configurations for the lower part of the balloon-shaped portion 10, such as (1) fixing to the support 30, (2) fixing to the balloon-shaped portion 10 itself, (3) fixing to the lower part of the internal frame 20, or fixing by a combination of (1) to (3).

[0055] 12 shows a configuration in which the upper part of the balloon-shaped part 10 and the upper part of the light-shielding cover 5 are sewn together, that is, a configuration in which a sewn part 55g is provided as the upper fixing part 55. By sewing the balloon-shaped part 10 and the light-shielding cover 5 together in this way, it becomes difficult to remove the balloon-shaped part 10 and the light-shielding cover 5, but in this embodiment, as described in FIG. 7, the light-shielding cover 5 can freely adjust its light-shielding angle, so this configuration is also possible. It is also possible to sew the lower part of the balloon-shaped part 10 to the lower part of the light-shielding cover 5.

[0056] (Fourth Variation) In the above embodiment, one light-shielding cover 5 is used for one balloon-shaped portion 10. In addition to this embodiment, multiple light-shielding covers 5 may be used for one balloon-shaped portion 10. FIG. 13 shows an example in which two light-shielding covers 5a and 5b are attached to one balloon-shaped portion 10. In this embodiment, light can be blocked in two directions, in other words, lighting can be provided in two directions. For example, in a construction site such as a narrow alley, it is possible to appropriately block light in two directions, and light pollution can be suppressed for nearby houses. In this way, not only the example in which two light-shielding covers 5a and 5b are used, but also three or more light-shielding covers 5 may be provided to block light and provide lighting in multiple directions.

[0057] (Fifth Variation) The balloon-shaped portion 10 in the above-described embodiment is a type that expands by blowing air, but the balloon-shaped portion 10 is not limited to this type. For example, the balloon-shaped portion 10 may have a mechanical framework inside. The mechanical framework is something that can be mechanically changed from a closed state to an open state, like the framework of an umbrella. In the case of the balloon-shaped portion 10 using such a mechanical framework, the mechanical framework is closed when not in use, such as during transportation. On the other hand, when lighting is performed, the mechanical framework is opened, so that the surface can be inflated, like the balloon-shaped portion 10 in the above-described embodiment. [Explanation of symbols]

[0058] 1: Floodlight 50: Light shielding section 5 (5a, 5b): Shading cover 51: Upper shading cloth 10: Balloon-shaped portion 52: Side shading cloth 20: Internal frame 53: Lower shading cloth 21: Lower frame 53a: Mesh cloth 22: Top of frame 54: Storage bag 23: Upper mounting part 55: Upper fixing part 24: Lower mounting part 56: Lower fixing part 25: Balloon storage bag 231: Peripheral fixing part 26: Balloon storage bag 241: Peripheral fixing part 26a: Zipper 251: Storage zipper 27: Blower section 551: Locking section 28: Lighting unit 552: Rubber belt 30: Post 553: Locked part 31a~31d: Unit support 554: Belt 41: Generator 561: Locking part 42: Cart 562: Rubber belt 43: Power supply line 563: Locked part 44: Sign sheet 564: Belt

Claims

1. Used in a floodlight having a balloon-shaped portion that expands to illuminate the interior, A light-shielding portion having a light-shielding function; an upper fixing portion provided on an upper side of the light blocking portion and fixed to an upper side of the balloon-shaped portion; a lower fixing portion provided below the light-shielding portion and fixed to a lower side of the balloon-shaped portion, By fixing only the upper fixing portion and the lower fixing portion and moving the light-shielding portion located between the upper fixing portion and the lower fixing portion, the light-shielding range by the light-shielding portion can be changed, and when the balloon-shaped portion is inflated, the surface of the balloon-shaped portion comes into close contact with at least a partial region of the light-shielding portion, so that the light-shielding portion is fixed around the balloon-shaped portion. Shading cover for spotlight.

2. Used in a floodlight having a balloon-shaped portion that expands to illuminate the interior, The balloon-shaped portion and a light-shielding cover are provided. The light-shielding cover is A light-shielding portion having a light-shielding function; an upper fixing portion provided on an upper side of the light blocking portion and fixed to an upper side of the balloon-shaped portion; a lower fixing portion provided below the light-shielding portion and fixed to a lower side of the balloon-shaped portion, By fixing only the upper fixing portion and the lower fixing portion and moving the light-shielding portion located between the upper fixing portion and the lower fixing portion, the light-shielding range by the light-shielding portion can be changed, and when the balloon-shaped portion is inflated, the surface of the balloon-shaped portion comes into close contact with at least a partial region of the light-shielding portion, so that the light-shielding portion is fixed around the balloon-shaped portion. Floodlight balloons.

3. A floodlight having a balloon-shaped portion that expands and illuminates the interior thereof, A light-shielding portion having a light-shielding function; an upper fixing portion provided on an upper side of the light blocking portion and fixed to an upper side of the balloon-shaped portion; a lower fixing portion provided below the light-shielding portion and fixed to a lower side of the balloon-shaped portion; By fixing only the upper fixing part and the lower fixing part and moving the light-shielding part located between the upper fixing part and the lower fixing part, the light-shielding range by the light-shielding part can be changed, and when the balloon-shaped part is inflated, the surface of the balloon-shaped part comes into close contact with at least a partial area of ​​the light-shielding part, so that the light-shielding part is fixed around the balloon-shaped part. Floodlight.

4. Used in a floodlight having a balloon-shaped portion that expands to illuminate the interior, A light-shielding portion having a light-shielding function; an upper fixing portion provided on an upper side of the light blocking portion and fixed to an upper side of the balloon-shaped portion; a lower fixing part provided below the light-shielding part and fixed to the lower side of the balloon-shaped part, By fixing only the upper fixing portion and the lower fixing portion and moving the light-shielding portion located between the upper fixing portion and the lower fixing portion, the light-shielding range by the light-shielding portion can be changed, and when the balloon-shaped portion is inflated, the surface of the balloon-shaped portion is brought into close contact with at least a partial area of ​​the light-shielding portion, thereby fixing the light-shielding portion to the periphery of the balloon-shaped portion. How to block the light projector.

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