JP2016046022A - Cloth material for balloon illumination, balloon illumination device and balloon type light projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently emit light emitted from a light source to outside while securing desired glare-proof property.SOLUTION: A cloth material for a balloon illumination is a dry cloth material in which a transparent resin containing inorganic pigment or transparent resin particles having a volume average particle diameter of 0.3-0.4 μm and a refractive index to visible light of 1.7 or less, or a coating mainly comprising the transparent resin is applied to a white fabric thereby to close the fiber clearance of the cloth material. In the cloth material, a whole light transmissivity to incident light is 68% or more, and a parallel light transmissivity is 4% or less.SELECTED DRAWING: None

Description

  The present invention relates to a balloon illumination cloth material, a balloon illumination device using the same, and a balloon type projector.

  A balloon lighting device and a projector that supports the balloon lighting device with a support column can illuminate a relatively wide area, and are generally used as nighttime lighting indoors and outdoors such as construction sites and shelters. Such a balloon illumination device includes a light source inside the balloon, and in a state where the balloon is inflated by a blower, light emitted from the light source through the outer skin of the balloon is emitted to the surroundings (the following patent document) 1).

  The outer skin of the balloon is made of a material that has airtightness that can be inflated by a blower, flame resistance to the heat generated by the internal light source, especially contamination resistance and waterproofing required for outdoor use. In general, cloth materials obtained by applying various coatings to fabrics such as polyester and nylon are used.

JP 2005-150123 A

  Such a balloon lighting device is required to have anti-glare properties so as not to obstruct the field of view of people (pedestrians, automobile drivers, etc.) passing near the place where the balloon lighting device is installed. Yes. Moreover, it is required to suppress noise during operation at night or in residential areas or indoors.

  In order to improve the antiglare property, conventionally, light that has passed through the balloon skin and emitted to the outside is sufficiently scattered, or the transparency of the balloon skin has been lowered. According to this, there is a large amount of light that is diffusely reflected by the balloon skin and not emitted to the outside, and light that is absorbed by the balloon skin and not emitted to the outside, and when trying to obtain high anti-glare properties, the light emitted from the light source to the outside The emission efficiency must be reduced.

  On the other hand, in order to suppress noise during operation of the balloon illumination device, it is effective to use a secondary battery (battery) instead of a generator as a power source for supplying power to a light source or the like. As described above, when the balloon lighting device is driven with the secondary battery as a power source, it is required to make the time during which continuous lighting can be performed by one charge as long as possible. For this, light sources with as low power consumption as possible and LEDs with high luminous efficiency are used, but in order to obtain the desired brightness with low power consumption, the light transmission characteristics of the balloon envelope are improved. Thus, it is necessary to increase the emission efficiency of the light that passes through the outer skin of the balloon and is emitted to the outside.

  Furthermore, the balloon illumination device can exhibit a high information transmission function by displaying character information and images on the balloon skin. In particular, when a projector is built in the balloon, a projected image can be projected on the balloon skin, and a high information transmission function can be added to the balloon illumination device. However, when a projected image is projected on the balloon skin, there is a problem that the projected image projected on the balloon skin becomes unclear depending on the light transmission characteristics of the balloon skin.

  This invention makes it an example of a subject to cope with such a problem. This means that light emitted from the light source can be efficiently emitted to the outside while ensuring the desired antiglare property, bright balloon illumination can be achieved with low power consumption, and clear when projecting images on the balloon skin It is an object of the invention to be able to obtain a simple image.

  In order to achieve such an object, the present invention improves the light transmission characteristics of the balloon illumination cloth material that forms the balloon envelope, thereby allowing the light emitted from the light source to be externally secured while ensuring the desired antiglare property. The balloon illumination cloth material of the present invention is a cloth material obtained by applying and drying a transparent resin or a paint mainly composed of a transparent resin on a white cloth, The light transmittance is 68% or more, and the parallel light transmittance is 4% or less.

  According to such a balloon illumination cloth material, the light emitted to the outside is effectively scattered and the desired anti-glare property is ensured while suppressing irregular reflection and light absorption that cannot be taken out to the outside. However, the efficiency of light emitted from the light source to the outside has been improved, and a clear image can be obtained even when a projected image is projected on the balloon skin, realizing bright balloon illumination with low power consumption. Is possible.

It is explanatory drawing which showed an example of the balloon illuminating device which used the cloth material for balloon illumination which concerns on embodiment of this invention for the balloon outer_layer | skin. (A), (b) is explanatory drawing which shows the structural example of the balloon illumination cloth material which concerns on embodiment of this invention. (A), (b) is explanatory drawing which showed the floodlight (balloon type floodlight) provided with the balloon illuminating device.

  Embodiments of the present invention will be described below. A balloon illumination cloth material according to an embodiment of the present invention is a cloth material obtained by applying and drying a transparent resin or a paint mainly composed of a transparent resin on a white cloth, and has a total light transmittance of 68% or more with respect to incident light. The parallel light transmittance is 4% or less. Absorption of light emitted from the light source is suppressed by using a white cloth material, and airtight to inflate the balloon by applying and drying a transparent resin or a paint mainly composed of transparent resin on the cloth. This prevents unnecessary diffuse reflection that prevents light from being extracted to the outside while securing the property.

  And by making the total light transmittance for incident light relatively high, the emission efficiency to the outside of the light emitted from the light source is increased, and by reducing the parallel light transmittance for the incident light, the light emitted from the light source is reduced. By passing through the cloth material linearly, the light source in the balloon is directly visually recognized, thereby eliminating the problem that the antiglare effect is reduced.

  The white fabric can be a mesh cloth material, and the balloon lighting cloth material is sealed with a transparent resin coated with openings (fiber gaps) of the mesh cloth material or a paint mainly composed of a transparent resin. It has gained. The transparent resin used here may be transparent, for example, acrylic, polyurethane, polyethylene, soluble polyamide, vinyl acetate, polyvinyl alcohol, butyral, polycarbonate, silicon, styrene-acrylic copolymer resin, etc. Or it can mix and use.

  The total light transmittance and parallel light transmittance with respect to incident light can be adjusted by the size of the opening of the mesh cloth material and the surface state of the transparent resin or paint covering the opening. The size of the opening of the mesh cloth material can be adjusted by the thickness of the fibers constituting the cloth material and the number of meshes. The total light transmittance for incident light is 68% or more and the parallel light transmittance is 4% or less. For example, the thickness of the fiber is preferably 0.03 to 0.4 mm, and the number of meshes is preferably 40 to 100 mesh. The number of meshes here indicates the number of meshes per inch.

  By increasing the total area of the openings of the mesh cloth material, the total light transmittance for incident light can be increased. When the individual openings of the mesh cloth material are made relatively large, a transparent resin or a coating film mainly composed of the transparent resin is formed in the openings. At this time, the parallel light transmittance can be kept low depending on the surface state (curved surface or roughened surface) of the transparent resin that closes the opening or the coating film of the paint mainly composed of the transparent resin. For example, the parallel light transmittance can be kept low by making the surface of the coating of a transparent resin or a transparent resin mainly composed of a transparent resin that closes the opening by increasing the thickness of the fiber to some extent.

  Further, the parallel light transmittance can be kept low by roughening the surface of the coating and effectively scattering the light transmitted through the coating. For this purpose, at least one kind of fine particles is dispersed in the transparent resin as the above-mentioned paint.

  The dispersed fine particles are intended to roughen the surface of the coating film and effectively scatter light, but in order to obtain a high total light transmittance, it is necessary not to reduce the light transmittance. become. For this purpose, it is preferable to use fine particles to be dispersed having a refractive index close to that of the base transparent resin, and it is preferable to use inorganic pigments, particularly so-called extender pigments having a low refractive index. Specifically, silica, calcium carbonate, barium sulfate, aluminum oxide, or the like can be used. Moreover, it can replace with such an inorganic pigment and can also use transparent resin fine particles, such as an acryl and polyethylene. Furthermore, the inorganic pigment and the transparent resin fine particles described above may be used one by one or a mixture of plural types.

  The fine particles used here preferably have a volume average particle diameter of 0.3 to 40 μm and a refractive index with respect to visible light of 1.7 or less. When the volume average particle size is less than 0.3 μm, the unevenness on the surface of the resin coating becomes small and the light scattering function cannot be sufficiently obtained. Further, if the volume average particle size exceeds 40 μm, it is not preferable because the particles are not sufficiently embedded in the dispersed resin and the fine particles are easily detached during use. In addition, if the refractive index of the fine particles exceeds 1.7, the difference in refractive index from the transparent resin having a refractive index of around 1.5 becomes large, and light is irregularly reflected at the interface between the transparent resin and the fine particles. This is not preferable because the light transmitted through this layer is reduced, and as a result, the total light transmittance of the cloth material is lowered.

  The balloon lighting fabric according to the embodiment of the present invention can use a fabric of fiber weaving such as a plain weave or a twill weave as the white fabric described above, and a transparent resin or a transparent resin is mainly used in the fiber gap. The cloth material for balloon illumination can be obtained by impregnating the coating material. When such a fiber woven fabric is used, the fiber gap is reduced, and therefore the total light transmittance can be increased by increasing the transparency of the fiber itself. In addition, since such a fiber woven fabric originally has a very low parallel light transmittance, by making the value of the refractive index of the fiber and the value of the refractive index of the transparent resin to be impregnated close to each other, Conditions can be obtained in which the total light transmittance is 68% or more and the parallel light transmittance is 4% or less. The transparent resin used here can be the same as described above. In the case of a fabric having a relatively wide fiber gap, the light scattering function may be enhanced by dispersing fine particles in a transparent resin, as in the above-described example.

  As the total light transmittance and the parallel light transmittance, values obtained by measurement based on JISK7136 using a haze meter NDH5000 (manufactured by Nippon Denshoku Industries Co., Ltd.) are used.

  When the balloon illumination cloth according to the embodiment of the present invention is used, the light transmittance of the balloon skin can be improved. In comparison, the same brightness can be achieved with a light source having a smaller capacity. Thus, energy saving can be achieved, and in particular, when a secondary battery is used as a power source, it is possible to lengthen the time for continuous lighting with one charge.

  Then, simply improving the light transmittance makes it easy to see the light source directly from the outside of the balloon, and the anti-glare effect that is characteristic of the balloon illumination device may be lost. Since the balloon illumination cloth material according to the present invention can reduce the transmittance of parallel light as much as possible, the desired anti-glare effect can be maintained.

  In addition, the balloon illumination cloth according to the embodiment of the present invention uses a mesh-like cloth material to transmit light emitted from the light source to the outside through the opening (fiber gap), and the balloon illumination cloth. The light transmittance of the material is improved. At this time, since the opening (fiber gap) is closed with a transparent resin or a layer of paint mainly composed of transparent resin, airtightness for inflating the balloon can be ensured. Alternatively, by adjusting the light transmission characteristics of the coating layer mainly composed of the transparent resin as described above, it is possible to reduce the parallel light transmittance and ensure the desired antiglare property. In addition to this, the balloon illumination cloth material is required to be provided with waterproofness, antifouling property, and further flame retardancy. For this, a resin material having water repellency or flame retardancy is used by appropriately selecting a transparent resin or paint material, or water repellency or This can also be dealt with by previously applying a material having flame retardancy.

  A balloon illuminating device in which a balloon envelope is formed of such a balloon illumination cloth material can obtain a clear projected image by arranging a projector inside the balloon and projecting an image on the balloon envelope. This is because the anti-glare effect of the balloon illumination cloth prevents the internal structure of the balloon from being seen from the outside, and the projection that forms an image on the inner surface of the balloon envelope due to the high light transmission and light diffusibility of the balloon illumination cloth This is because the image can be displayed outward with high contrast.

Examples of the balloon illumination cloth material will be described.
Example 1;
Nylon fiber constituting the mesh has a thickness of 0.12 mm, a white cloth having a mesh number of 70, an 8 wt% methanol solution of soluble nylon resin Amilan CM4000 (manufactured by Toray Industries, Inc.), and a volume average particle diameter of 6 μm. Silica powder (Silica powder # 300, Takefori Co., Ltd.) is added to the resin in the same weight and the paint dispersed in a homomixer is applied and dried to coat the mesh openings with silica-dispersed resin. A balloon illumination cloth material) was obtained. The adhesion amount of the silica-dispersed resin was 48 g / m ² .

Example 2;
A processed cloth material (balloon illumination cloth material) was obtained by processing in the same manner as in Example 1 except that the adhesion amount was 38 g / m ² .

Example 3;
A processed cloth material (balloon illumination cloth material) was obtained by processing in the same manner as in Example 1 except that the adhesion amount was 30 g / m ² .

Example 4;
A fiber that forms a polyester fabric by applying a 7% MEK solution of butyral resin ESREC BL-S (manufactured by Sekisui Chemical Co., Ltd.) to a polyester fabric that has been used in conventional balloon projectors. A work cloth material (balloon illumination cloth material) impregnated with butyral resin in between was obtained. The impregnation coating amount was 18 g / m ² .

Comparative Example 1;
The polyester cloth material used in Example 4 was used as it was without being impregnated with resin.

Comparative Example 2;
A work cloth similar to that of Example 1 was obtained except that the adhesion amount filled in Example 1 was changed to 22 g / m ² .

Comparative Example 3;
The same processing as in Example 1 was performed except that 0.2 parts by weight of silica powder was added and dispersed with respect to the resin content in the paint of Example 1, to obtain a cloth material with an adhesion amount of 32 g / m ² .

  The total light transmittance and parallel light transmittance were measured with respect to the obtained cloth material using a haze meter NDH5000 (manufactured by Nippon Denshoku Industries Co., Ltd.). Also, create a balloon with the same shape as the balloon used in the balloon-type projector LB030CC (manufactured by Lightboy Co., Ltd.) using LED as the light source, extend the mast to the highest point, turn on the lamp, and center the balloon The illuminance on the ground 3 m away from the axis was measured.

  The measurement results are shown in Table 1 below.

Next, a small projector (BOXi T350 made by Elmo Co., Ltd.) was installed inside the balloon, and when the image irradiated on the inside of the balloon skin was viewed from the outside of the balloon, the results shown in Table 2 below were obtained. .

  As described above, in the embodiment, a clear image can be confirmed as compared with the comparative example 1 which is the current commercial product. In the comparative example 2 and the comparative example 3, the projection lens of the projector is seen from the outside of the balloon. The position was visible, and the projected image of that portion was unclear.

  As described above, as shown in the examples and comparative examples, it is possible to improve the illuminance of the balloon illumination device by forming the balloon envelope of the balloon illumination device with the balloon illumination cloth having specific optical characteristics. By using it for the balloon envelope of a balloon illumination device with a built-in projector, it is possible to project a projected image from the projector more clearly than when a conventional balloon is used.

  Hereinafter, with reference to the drawings, a balloon illumination device using the balloon illumination cloth described above for a part or the whole of the balloon outer skin will be described. A balloon illumination device 1 shown in FIG. 1 includes an illumination light source 20 in a balloon 10 and a projector 2 having an information transmission function in the vicinity of an inner lower end of the balloon 10. The projection light L from the projector 2 is irradiated on the inner surface of the balloon outer skin 10A from the projection part of the projector 2 as indicated by a dotted line, and is emitted to the outside via the balloon outer skin 10A to display various information.

  In the balloon illumination device 1, the blower 12 is installed on the upper end side of the balloon 10. The blower 12 inflates the balloon skin 10A, and is used to discharge the warm air that has cooled the lamp of the projector 2 in order to cool the power source unit for turning on the illumination light source 20 and the illumination light source 20.

  A control box 11 is installed at the lower end of the balloon 10. The control box 11 is provided with a power supply control circuit that controls power supply to the illumination light source 20, the projector 2, and the blower 12. In addition, wiring for distributing the power input from the power connector 13 to each projector 2 and wiring for sending the video signal input from the video signal connector 14 to each projector 2 are accommodated in the control box 11. ing.

  The balloon outer skin 10A is fixed to the top sheet 16 attached to the upper end portion of the support column 15 and the bottom sheet 17 at the lower end portion of the balloon 10 by attaching means such as a fastener, and the blower 12 installed in the control box 11 is driven. It can be inflated.

  Further, a balloon cover 18 is mounted outside the upper end of the balloon 10 so as to protect the balloon outer skin 10A from breakage and dirt when the balloon lighting device 1 is not used. Can be stored in the unfolded.

  Such a balloon illuminating device 1 can illuminate the surroundings by irradiating light emitted from the illumination light source 20 to the outside via the balloon outer skin 10A. Furthermore, various information can be displayed on the balloon skin 10A by irradiating the balloon skin 10A with the projection light L emitted from the projector 2.

  2A and 2B specifically show the structures of the cloth materials (balloon illumination cloth materials) N1 and N2 that form the balloon skin 10A. The example shown in (a) is a fabric in which a white fabric is woven with longitudinal fibers S1 and transverse fibers S2 in a plain weave shape, and impregnated with a transparent resin M in which an inorganic pigment is dispersed to obtain a fabric material N1. Yes. In the example shown in (b), a white fabric is a fabric in which vertical fibers S1 and horizontal fibers S2 are woven in a twill shape, and a fabric material N2 is obtained by impregnating the fabric with a transparent resin M in which an inorganic pigment is dispersed. ing.

  In such a balloon illuminating device 1, by forming the balloon outer skin 10 </ b> A using the aforementioned balloon illumination cloth material, the image projected onto the balloon outer skin 10 </ b> A by the projector 2 can be clearly displayed. As described above, the balloon illumination cloth material according to the embodiment of the present invention is a cloth material obtained by applying and drying a transparent resin or a paint mainly composed of a transparent resin on a white cloth, and has a total light transmittance with respect to incident light. 68% or more and the parallel light transmittance is 4% or less, so that the light imaged on the inner surface of the balloon outer shell 10A is effectively scattered and efficiently emitted from the balloon outer shell 10A. The image projected on the balloon outer skin 10A is clearly displayed.

  FIGS. 3A and 3B are explanatory views showing a projector (balloon projector) provided with the balloon illumination device 1 described above. In the floodlight 100 shown in FIG. 3A, the balloon lighting device 1 is installed on the telescopic column 103 attached to the carriage 101. In the illustrated example, a power source device 102 such as a generator or a secondary battery is mounted on the carriage 101. In the projector 100 </ b> A shown in FIG. 3B, the balloon illumination device 1 is installed on the telescopic column 103 </ b> A attached to the tripod 104.

  Such balloon-type projectors 100 and 100A can achieve bright illumination with low power consumption while ensuring a desired anti-glare performance, and can display a clear image even when a projected image is projected on the balloon envelope. Can be obtained.

N1, N2: Cloth material (cloth material for balloon illumination), S1: Longitudinal fiber, S2: Horizontal fiber,
M: transparent resin,
1: balloon illumination device, 2: projector,
10: Balloon, 10A: Balloon skin,
11: Control box,
12: Blower, 13: Power connector, 14: Video signal connector,
15: support, 16: top sheet, 17: bottom sheet,
18: Balloon cover,
100, 100A: Floodlight (balloon-type floodlight)
101: Bogie, 102: Power supply device, 103, 103A: Telescopic support,
104: Tripod

Claims (8)

  A cloth material obtained by applying and drying a transparent resin or a paint mainly composed of a transparent resin on a white fabric, wherein the total light transmittance for incident light is 68% or more and the parallel light transmittance is 4% or less. Cloth for balloon lighting. In the paint mainly composed of the transparent resin, at least one kind of fine particles are dispersed,
The balloon illumination cloth material according to claim 1, wherein a fiber gap of the cloth material is closed with the transparent resin or the paint.   The fine particles are composed of inorganic pigments or transparent resin fine particles having a volume average particle size of 0.3 μm or more and 40 μm or less and a refractive index with respect to visible light of 1.7 or less, or a mixture thereof. The cloth material for balloon illumination as described. The white fabric is a mesh-like cloth material having a fiber thickness of 0.03 to 0.4 mm and a mesh number of 40 to 100 mesh,
The balloon illumination cloth material according to any one of claims 1 to 3, wherein a coating film mainly composed of the transparent resin or the transparent resin is formed in an opening of the mesh cloth material. . The white fabric is a plain or twill fabric,
The balloon illumination cloth material according to any one of claims 1 to 3, wherein the tissue gap of the cloth material is impregnated with the transparent resin or a paint mainly composed of the transparent resin. With balloons,
A light source disposed inside the balloon;
A blower for inflating the balloon;
A power supply control circuit that controls power supply to the light source and the blower provided inside the balloon or outside the lower end of the balloon;
A balloon illumination device, wherein a part or all of the outer skin of the balloon is made of the balloon illumination cloth material according to any one of claims 1 to 5.   The balloon illumination device according to claim 6, wherein a projector for projecting an image on an outer skin of the balloon is disposed inside the balloon.   A balloon-type projector in which the balloon illumination device according to claim 6 or 7 is installed on a support.

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