JP2006196352A - Lighting device and gutter form plastic molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device and a gutter-form molding which can be arranged in parallel closely in a limited area, and can increase illuminance in a prescribed direction constantly without being affected by vibration. <P>SOLUTION: The lighting device 1 is constructed of a straight tube shape lighting tube 2 and a gutter-form plastic molding 3. The straight tube shape lighting tube 2 is a fluorescent lamp and is composed of a cylindrical tube main body 21 and bases 22 fitted at both ends of this main body 21. The gutter-form plastic sheet molding 3 has a long shape with the both ends parts 31, 31 in the longitudinal direction reaching the end part of the base 22 of the straight lighting tube 2, and the both end parts 32, 32 in width direction positioned opposed to each other at the circumference face of the tube main body 21 and has a width to cover nearly half of the tube main body 21. Furthermore, the gutter-form plastic sheet molding 3 is formed curved in gutter form with its diameter smaller than the diameter of the tube main body 21, thereby, the molding 3 is fitted engaged with the counter-irradiation side of the tube main body 21 by its own elasticity without using a tightening tool. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an illuminating device that increases the illuminance in a predetermined direction of light from an illuminating tube, and a saddle-shaped plastic sheet molding used for the illuminating device.

As a conventional lighting device, the one shown in FIG. 17 has been proposed. This illumination device has a configuration in which a light-reflecting plastic sheet 101 is disposed on the opposite side of the fluorescent lamp 100 and a transparent plastic sheet 102 is disposed on the irradiation side. The cross-sectional shape of the light-reflecting plastic sheet 101 is such that it wraps around the outer peripheral surface of the fluorescent lamp 100 on the side opposite to the irradiation side, and is bent into a “he” shape at the center in the width direction or bent into an arc As a result, both wings protrude from both sides of the fluorescent lamp 100. The transparent plastic sheet 102 is attached in contact with the lower surface of the fluorescent lamp 100, and both sides thereof are fused and joined to both wings of the reflective plastic sheet 101 (see FIG. 1 of Patent Document 1). Therefore, according to the illuminating device, the illuminance in a predetermined direction of the light from the fluorescent lamp 100 can be increased by the reflected light from the light reflecting plastic sheet 101.
JP 2001-184914 A

  By the way, in the case of a showcase-type refrigerator placed in a retail store, for example, a rear opening has a storage opening for storing the product therein, and the front is for taking out the product for the consumer to take out the product. Since there is an opening, the illumination device for illuminating the interior of the warehouse is attached to the side entrance in the interior. Therefore, the entire interior of the cabinet is fully illuminated from the side entrance, and there are as few protrusions as possible so as not to obstruct the removal of the stored items. However, in the above-described conventional lighting device, the light reflecting plastic sheet 101 is bent into a “h” shape, and both wings protrude from both sides of the fluorescent lamp 100. For this reason, when the side entrance light reflecting plastic sheet 101 of the showcase type refrigerator is arranged, both wings obstruct the removal of the stored items. If the orientation is changed so that it does not get in the way, there will be a problem that the entire interior cannot be fully illuminated.

  In addition, since the fluorescent lamp 100 is cylindrical, the light reflecting plastic sheet 101 having a letter "" is only in line contact with the fluorescent lamp 100, and even if it is on the transparent plastic sheet 102, the fluorescent lamp There is only a slight surface contact with 100. For this reason, the light reflecting plastic sheet 101 and the transparent plastic sheet 102 are integrally rotated with respect to the fluorescent lamp 100 by vibration generated when the doors provided in the storage opening and the extraction opening are opened and closed. The illuminance in a predetermined direction, which was trying to increase the illuminance, will decrease. Of course, the same problem occurs not only in a showcase-type refrigerator but also in a place where vibration occurs.

  The present invention has been made in view of such conventional problems, and can be installed within a limited area and enables a close parallel arrangement, and is always in a predetermined direction without being affected by vibration. It aims at providing the illuminating device which can raise the illumination intensity, and a bowl-shaped plastic molding.

  In order to solve the above-mentioned problems, an illumination device according to the present invention is formed by fitting a molded plastic sheet molded article having a reflective surface having a diffuse reflectance of 85% or more to an illumination tube. The higher the diffuse reflectance of the bowl-shaped plastic sheet molding, the better, but the upper limit is about 120%. A more preferable range is 85 to 110%.

  Therefore, since the plastic sheet molded product fitted to the lighting tube has a bowl shape, there is no both wings protruding from the lighting tube on both sides, and the projection protrudes by the thickness of the bowl shaped plastic sheet molding. Not too much. Therefore, close parallel arrangement within a limited area is possible. Further, since the plastic sheet molding is fitted to the lighting tube and has a bowl shape, many portions or the entire surface of the inner periphery thereof are in surface contact with the surface of the lighting tube. Therefore, even if it is a case where it arrange | positions in the location where a vibration generate | occur | produces, a saddle-shaped plastic sheet molded object will not rotate with respect to a straight tubular lighting tube by vibration. Moreover, since the diffused reflectance of the vertical plastic sheet molding is 85% or more and 120% or lower, the illuminance in a predetermined direction, that is, the opening direction of the vertical plastic sheet molding is sufficiently increased.

  In the present invention, the diffuse reflectance is measured by measuring the reflectance at a wavelength of 550 nm using a spectrophotometer (UV-3101PC: manufactured by Shimadzu Corporation), and the diffuse reflectance of the white plate obtained by solidifying fine powder of barium sulfate. It calculated | required from the relative value when setting it as 100%.

  In addition, the molded plastic sheet molded product of the present invention does not need to be fused to the transparent film at both edges and molded into a cylindrical shape, so that the structure is simplified. Furthermore, in the present invention, the structure is simplified because the molded plastic sheet molding is fitted without a stopper. Further, the saddle-shaped plastic sheet molding is fixed and fitted by a stopper, and the stopper is made of an elastic body, or is fixed by fitting and fitted. By fixing and fitting with the transparent resin film covered with the tube, the fixing performance of the molded plastic sheet is further enhanced. The lighting tube is preferably a straight tube lighting tube.

  Moreover, the lighting device according to the present invention is provided with annular stoppers at both ends of a straight tubular lighting tube, and the annular stopper has a bowl-shaped plastic sheet molding having a reflecting surface having a diffuse reflectance of 85% or more and 120% or less. Combining things.

  Also in this invention, since the plastic sheet molded product fitted to the straight tubular lighting tube has a bowl shape, there are no both wings protruding from both sides of the straight tubular lighting tube, and it is almost a bowl shape from the annular stopper. It only protrudes by the thickness of the plastic sheet molding. Therefore, close parallel arrangement within a limited area is possible. Further, since the bowl-shaped plastic sheet molding is fitted to the annular stoppers at both ends of the straight tubular lighting tube, the bowl-shaped plastic sheet molding rotates with respect to the straight tubular lighting tube due to vibration. There is nothing. Moreover, since the diffused reflectance of the vertical plastic sheet molding is 85% or more and 120% or lower, the illuminance in a predetermined direction, that is, the opening direction of the vertical plastic sheet molding is sufficiently increased.

  Further, since the annular stopper is made of an elastic body, the fixing performance of the bowl-shaped plastic sheet molding is further enhanced.

  Further, in the lighting device according to the present invention, in order to protect the tubular lighting tube, the transparent hard plastic protective tube mounted with the mounting tools at both ends of the tubular lighting tube or the mounting tool has a diffuse reflectance. A cage-shaped plastic sheet molding having a reflecting surface of 85% or more and 120% or less is fitted.

  Therefore, since the plastic sheet molding to be fitted to the transparent hard plastic protective tube has a bowl shape, there is no both wings protruding from the transparent hard plastic protective pipe on both sides, and almost the bowl shaped plastic sheet molding It only protrudes by the thickness of the object. Therefore, close parallel arrangement within a limited area is possible. Further, since the plastic sheet molded product is bowl-shaped, many portions or the entire surface of the inner periphery thereof are in surface contact with the surface of the transparent hard plastic protective tube. Therefore, even if it is a case where it arrange | positions in the location where a vibration generate | occur | produces, a saddle-shaped plastic sheet molding does not rotate with respect to a tubular lighting tube by vibration. Moreover, since the diffused reflectance of the vertical plastic sheet molding is 85% or more and 120% or lower, the illuminance in a predetermined direction, that is, the opening direction of the vertical plastic sheet molding is sufficiently increased.

  Further, the mounting tool is made of an elastic body, or is fixed and fitted by a stopper, or is fixed and fitted by a transparent resin film coated on a transparent hard plastic protective tube. By combining these, the fixing performance of the vertical plastic sheet molding is further enhanced. In addition, the saddle-shaped plastic sheet molded product is fitted without a stopper, or the mounting tool serves also as the stopper, whereby the structure can be simplified.

  In addition, the lighting device according to the present invention diffuses into a gap between a tubular lighting tube and a transparent hard plastic protective tube mounted with a mounting tool at both ends of the tubular lighting tube to protect the tubular lighting tube. A vertical plastic sheet molded article having a reflective surface with a reflectance of 85% or more and 120% or less is fitted, or attached to both ends of the tubular lighting tube in order to protect the tubular lighting tube in the gap. A transparent rigid plastic protective tube provided with a tool is fitted with a bowl-shaped plastic sheet molding having a reflective surface with a diffuse reflectance of 85% to 120%.

  Even in such an illumination device, close parallel arrangement within a limited area is possible. Further, since the plastic sheet molding is fitted in the gap and has a bowl shape, most of the inner periphery or the entire surface thereof is in surface contact with the surface of the straight tubular lighting tube. Therefore, even if it is a case where it arrange | positions in the location where a vibration generate | occur | produces, a saddle-shaped plastic sheet molded object will not rotate with respect to a straight tubular lighting tube by vibration.

  The plastic sheet molded product according to the present invention is a saddle-shaped plastic sheet molded product used in the lighting device, and has a substantially arc-shaped cross section. This further enhances the fitting property.

  Moreover, it is preferable that the said cage-shaped plastic sheet molding is a sheet | seat or film which reflects light.

Although the sheet or film reflecting light used in the present invention is not particularly limited, it is a thermoplastic resin foam sheet having a large number of fine bubbles or pores therein, or a thermoplastic resin film containing a filler, And a film in which a large number of voids are formed.
In the present invention, the material of the sheet or film that reflects light is preferably a thermoplastic resin, for example, a general-purpose resin such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, polychlorinated biphenyl, polyethylene terephthalate, polyvinyl alcohol, polycarbonate, Polybutylene terephthalate, polyethylene naphthalate, polyamide, polyacetal, polyphenylene ether, ultrahigh molecular weight polyethylene, polysulfone, polyethersulfone, polyphenylene sulfide, polyarylate, polyamideimide, polyetherimide, polyetheretherketone, polyimide, polytetrafluoro Engineering plastics such as ethylene, liquid crystal polymer, fluororesin, or copolymers or mixtures thereof Etc., and the like. Among these, polyester, polyphenylene sulfide, polypropylene, and cyclopolyolefin are preferable because they have good heat resistance and impact resistance. In the resin used for the plastic film or sheet reflecting light, an antioxidant, an ultraviolet ray inhibitor, a lubricant, a pigment, a reinforcing agent and the like can be appropriately added. Moreover, you may form by apply | coating the coating layer containing these additives.

  Among the above-mentioned additives, the diffuse reflectance can be improved to 100% or more by adding a fluorescent brightening agent or coating a paint containing the fluorescent brightening agent.

  In the present invention, the sheet or film that reflects light has a closed cell with an average bubble diameter of light wavelength of 50 μm or less, and has a thickness of 80 μm or more and 2000 μm or less, more preferably 200 μm or more and 2000 μm or less. It is more preferable that

  The method for producing the polyester resin foam sheet is not particularly limited, but considering mass productivity, for example, the following method is preferably used.

That is, a roll is formed by winding a polyester resin sheet and a separator, and the roll is held in a pressurized inert gas atmosphere so that the polyester resin sheet contains an inert gas. A method of heating the foamed polyester resin sheet to a temperature equal to or higher than the softening temperature of the polyester under normal pressure is used.
Examples of the inert gas include helium, nitrogen, carbon dioxide, and argon. The inert gas permeation time and the inert gas permeation amount until the polyester resin is saturated vary depending on the type of polyester resin to be foamed, the type of inert gas, the permeation pressure, and the thickness of the sheet.

  In this method, a roll composed of a polyester resin sheet and a separator may be contained in an organic solvent before being held in a pressurized inert gas atmosphere and containing the inert gas in the polyester resin sheet. .

  Examples of the organic solvent include benzene, toluene, methyl ethyl ketone, ethyl formate, acetone, acetic acid, dioxane, m-cresol, aniline, acrylonitrile, dimethyl phthalate, nitroethane, nitromethane, and benzyl alcohol. Of these, acetone is more preferable from the viewpoints of handleability and economy.

  As described above, according to the present invention, since the plastic sheet molded product fitted to the lighting tube has a bowl shape, there is no both wings protruding from the lighting tube on both sides, and the substantially bowl shaped plastic sheet. It only protrudes by the thickness of the molded product. Therefore, close parallel arrangement within a limited area is possible. In addition, since the plastic sheet molding is fitted to the lighting tube, the protection tube, etc., and has a bowl shape, many parts or the entire surface of the inner periphery thereof are in surface contact with the surface of the lighting tube. Therefore, even if it is a case where it arrange | positions in the location which generate | occur | produces a vibration, a saddle-shaped plastic sheet molded object will not rotate with respect to a straight tubular lighting tube by vibration. Therefore, the illuminance in a predetermined direction can be constantly increased without being affected by vibration. In addition, since the diffused plastic sheet molding has a diffuse reflectance of 85% or more and 120% or less, the illuminance in a predetermined direction, that is, the opening direction of the rectangular plastic sheet molding can be sufficiently increased.

  Therefore, it is possible to arrange in close proximity within a limited area, and to constantly increase the illuminance in a predetermined direction without being affected by vibration.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  (First embodiment)

  1A and 1B show a first embodiment of the present invention. The lighting device 1 according to the present embodiment is composed of a straight tubular lighting tube 2 and a bowl-shaped plastic sheet molding 3. The straight tubular illuminating tube 2 is a fluorescent lamp, and includes a cylindrical tube main body 21 and bases 22 attached to both ends of the tube main body 21.

  The vertical plastic sheet molding 3 is a polyester resin foam (for example, “MCPET” manufactured by Furukawa Electric Co., Ltd.) having closed cells with an average cell diameter of 50 μm or less and a thickness of 200 μm or more and 2000 μm or less. % To 120% or less. Moreover, this bowl-shaped plastic sheet molding 3 has a long shape in which both end portions 31, 31 in the length direction reach the end portion of the base 22 of the straight tubular lighting tube 2, and both end portions 32 in the width direction, 32 has a width that is located opposite to the circumferential surface of the tube main body 21 and covers substantially half of the tube main body 21. Further, the bowl-shaped plastic sheet molding 3 is curved and formed in a bowl shape smaller than the diameter of the tube main body 21. Therefore, the bowl-shaped plastic sheet molding 3 is fitted on the non-irradiation side of the pipe body 21. By fitting, it is fitted without a stopper due to its own elasticity.

  In the first embodiment according to the above configuration, the bowl-shaped plastic sheet molding 3 has a semicircular cross section and is closely fitted to the tube main body 21 so that it protrudes from the tube main body 21 to both sides. Such wings do not exist and only protrude by the thickness. Therefore, close parallel arrangement within a limited area is possible.

  Further, since the bowl-shaped plastic sheet molding 3 has a semicircular cross section, the entire inner peripheral surface thereof is in surface contact with the surface of the tube main body 21. Therefore, even if it is a case where it arrange | positions in the location where a vibration generate | occur | produces, the vertical plastic sheet molding 3 does not rotate with respect to the pipe | tube main body 21 by a vibration. In addition, since the diffused plastic sheet molding has a diffuse reflectance of 85% or more and 120% or less, the illuminance on the irradiation side which is the opening direction of the rectangular plastic sheet molded product 3 is sufficiently increased.

  Therefore, it is possible to arrange in close proximity within a limited area, and to constantly increase the illuminance in a predetermined direction without being affected by vibration.

  In the present embodiment, the bowl-shaped plastic sheet molded product 3 has a semicircular cross section. However, as shown in FIG. 2A, it may have a polygonal cross section having a pair of ridge lines 33 and 33. In the present embodiment, the saddle-shaped plastic sheet molded product 3 has a length from which both end portions 31 and 31 reach the end of the base 22 of the straight tubular lighting tube 2, as shown in FIG. It may be shorter than this.

  (Second Embodiment)

  3 (A) and 3 (B) show a second embodiment of the present invention. The lighting device 1 according to the present embodiment includes a straight tubular lighting tube 2, a bowl-shaped plastic sheet molding 3, and a pair of stoppers 40 and 40. The stopper 40 is an elastic ring such as a silicon rubber ring, for example, and is connected to the tube main body 21 of the straight tubular lighting tube 2 and the bowl-shaped plastic sheet molding 3 fitted to the tube main body 21. Are fitted at both ends. Therefore, according to the present embodiment, it is possible to improve the fixing performance of the bowl-shaped plastic sheet molding 3 by the stopper 40. Therefore, even if it is the case where it arrange | positions in the location where a vibration generate | occur | produces, the disadvantage that the saddle-shaped plastic sheet molding 3 rotates with respect to the pipe main body 21 by a vibration can be prevented reliably.

  (Third embodiment)

  4A and 4B show a third embodiment of the present invention. The lighting device 1 according to the present embodiment includes a straight tubular lighting tube 2, a bowl-shaped plastic sheet molding 3, and a stopper 41. The stopper 41 is a metal spring, for example, and has a tightening force stronger than that of the stopper 40. Therefore, according to the present embodiment, the fixing performance of the bowl-shaped plastic sheet molded product 3 can be enhanced by the single stopper 41, and therefore the mounting process can be further simplified.

  In the above first to third embodiments, the case where the present invention is applied to the straight tubular illuminating tube 2 has been described. However, the present invention can also be applied to a ring tubular illuminating tube.

  (Fourth embodiment)

  5 (A) and 5 (B) show a fourth embodiment of the present invention. The lighting device 1 according to the present embodiment includes a straight tubular lighting tube 2 and a bowl-shaped plastic sheet molding 3, and an adhesive 5 for bonding the bowl-shaped plastic sheet molding 3 to the tube body 21 of the straight tubular lighting tube 2. It consists of and. Therefore, according to the present embodiment, the fixing performance of the bowl-shaped plastic sheet molded product 3 can be enhanced by the adhesive force of the adhesive 5. Therefore, even if it is the case where it arrange | positions in the location where a vibration generate | occur | produces, the disadvantage that the saddle-shaped plastic sheet molding 3 rotates with respect to the pipe main body 21 by a vibration can be prevented reliably.

  (Fifth embodiment)

  6A and 6B show a fifth embodiment of the present invention. The illuminating device 1 according to the present embodiment includes a straight tubular illuminating tube 2, a bowl-shaped plastic sheet molding 3, and a transparent resin film 6. The transparent resin film 6 integrally covers the tube main body 21 of the straight tubular lighting tube 2 and the bowl-shaped plastic sheet molding 3 fitted thereto.

  In this embodiment, at the time of manufacture, an adhesive is applied to an appropriate location on the back surface of the bowl-shaped plastic sheet molded article 3 and temporarily attached to the tube body 21 of the straight tubular lighting tube 2. Cover. Thereby, the bowl-shaped plastic sheet molding 3 can be fixed by the transparent resin film 6 without being accompanied by the displacement of the bowl-shaped plastic sheet molding 3 on the pipe body 21 during the covering operation. As another manufacturing method, the bowl-shaped plastic sheet molded product 3 is fitted to the lighting tube main body 21, and is inserted into a tube made of a heat-shrinkable transparent plastic film, and then the heat-shrinkage is performed. For example, there is a method in which a heat-shrinkable transparent plastic film is heat-shrinked so as to be in close contact with the lighting tube main body 21 and the bowl-shaped plastic sheet molding 3.

  (Sixth embodiment)

  FIGS. 7A and 7B show a sixth embodiment of the present invention. The lighting device 1 according to the present embodiment includes a straight tubular lighting tube 2, a transparent hard plastic protective tube 9 that is mounted by installing mounting tools (not shown) at both ends of the straight tubular lighting tube 2, and a bowl-shaped plastic sheet. The molded product 3 and an adhesive 5 for bonding the bowl-shaped plastic sheet molded product 3 to the transparent hard plastic protective tube 9 are constituted. The transparent hard plastic protective tube 9 is fixed to both ends of the straight tubular lighting tube 2 by, for example, a mounting tool 8 shown in FIG. Therefore, according to the present embodiment, the fixing performance of the bowl-shaped plastic sheet molded product 3 can be enhanced by the adhesive force of the adhesive 5. Therefore, even if it is the case where it arrange | positions in the location where a vibration generate | occur | produces, the disadvantage that the saddle-shaped plastic sheet molding 3 rotates with respect to the pipe main body 21 by a vibration can be prevented reliably.

  (Seventh embodiment)

  FIGS. 8A and 8B show a seventh embodiment of the present invention. The lighting device 1 according to the present embodiment includes a straight tubular lighting tube 2, a transparent hard plastic protective tube 9 that is mounted by installing mounting tools (not shown) at both ends of the straight tubular lighting tube 2, and a bowl-shaped plastic sheet molding. It is comprised with the thing 3 and the transparent resin film 6. FIG. The transparent resin film 6 integrally covers the transparent hard plastic protective tube 9 and the bowl-shaped plastic sheet molding 3 fitted thereto. The transparent hard plastic protective tube 9 is fixed to both ends of the straight tubular lighting tube 2 by, for example, a mounting tool 8 shown in FIG.

  In this embodiment, at the time of production, an adhesive is applied to an appropriate place on the back surface of the bowl-shaped plastic sheet molding 3 and temporarily attached to the transparent hard plastic protective tube 9, and then covered with the transparent resin film 6. . Thereby, the saddle-shaped plastic sheet molding 3 is made into the transparent rigid plastic protective tube 9 by the transparent resin film 6 without the displacement of the saddle-shaped plastic sheet molded product 3 on the transparent rigid plastic protective tube 9 at the time of covering operation. Can be fixed.

  (Eighth embodiment)

  FIG. 9 shows an eighth embodiment of the present invention. The illuminating device 1 according to the present embodiment includes a straight tubular illuminating tube 2, a bowl-shaped plastic sheet molded product 3, and a pair of annular stoppers 42 (only one is shown). The annular stopper 42 is a ring having elasticity and a high coefficient of friction such as a rubber ring, for example, and is fitted to both ends of the tube main body 21 of the straight tubular lighting tube 2. On the annular stopper 42, the bowl-shaped plastic sheet molded product 3 is fitted by its own elasticity.

  Therefore, in the present embodiment, the bowl-shaped plastic sheet molding 3 is made of glass and does not fit into the tube body 21 having a low friction coefficient as in the first embodiment, but has a high friction coefficient. Since it fits in the annular stopper 42 which has, the fixing performance of the eaves-shaped plastic sheet molding 3 can be improved. Therefore, even if it is the case where it arrange | positions in the location where a vibration generate | occur | produces, the disadvantage that the saddle-shaped plastic sheet molding 3 rotates with respect to the pipe main body 21 by a vibration can be prevented reliably.

  (Ninth embodiment)

  FIG. 10 shows a ninth embodiment of the present invention. The illuminating device 1 according to the present embodiment includes a straight tubular illuminating tube 2, a bowl-shaped plastic sheet molding 3, a pair of attachments 8 (only one is shown), and a protective tube 9. The mounting tool 8 is preferably made of an elastic body and is a cylindrical object having a shape as illustrated. The mounting tool 8 is fixed to both left and right ends of the straight tubular lighting tube 2, and grooves 81 are formed over the entire circumference at opposite ends. The protective tube 9 is a cylindrical tube made of transparent plastic, and the tube main body 21 is accommodated therein, and is fixed to the mounting tool 8 by press-fitting both ends into the groove 81. And the saddle-shaped plastic sheet molded product 3 is fitted without a stopper by its own elasticity by being fitted to the non-irradiation side of the protective tube 9.

  According to the ninth embodiment, even if the tube main body 21 is broken, the protective tube 9 can prevent the glass fragments constituting the tube main body 21 from being scattered around. it can. Therefore, not only can the adjacent parallel arrangement within a limited area be possible, the illuminance in a predetermined direction can be constantly increased without being affected by vibration, but also the glass fragments when the tube body 21 is broken. Can be prevented.

  (Tenth embodiment)

  FIG. 11 shows a tenth embodiment of the present invention. The lighting device 1 according to the present embodiment includes a straight tubular lighting tube 2, a bowl-shaped plastic sheet molding 3, a pair of attachments 8 (only one shown), a protective tube 9 and a pair of annular stoppers 43 (only one shown). ). The annular stopper 43 is an elastic ring such as a silicon rubber ring, for example, and extends over the protective tube 9 and the bowl-shaped plastic sheet molded product 3 fitted to the protective tube 9. Is fitted. Therefore, the annular stopper 43 can improve the fixing performance of the bowl-shaped plastic sheet molded product 3 to the protective tube 9.

  (Eleventh embodiment)

  FIG. 12 shows an eleventh embodiment of the present invention. The illuminating device 1 according to the present embodiment includes a straight tubular illuminating tube 2, a bowl-shaped plastic sheet molding 3, a pair of attachments 8 (only one is shown), and a protective tube 9. The mounting tool 8 is cylindrical and is made of an elastic body such as a silicone rubber ring, and is fixed to both right and left ends of the straight tubular lighting tube 2 by elasticity, and grooves 81 are formed at opposite ends over the entire circumference. Is formed. On the upper side of the groove 81, the protective tube 9 and both ends of the bowl-shaped plastic sheet molded product 3 fitted to the outer peripheral surface of the protective tube 9 are press-fitted and fixed. Only both ends of the protective tube 9 are press-fitted and fixed to the lower side.

  Therefore, according to the present embodiment, it is possible to fix not only the protective tube 9 but also the bowl-shaped plastic sheet molding 3 by effectively using the mounting tool 8.

  (Twelfth embodiment)

  FIG. 13 shows a twelfth embodiment of the present invention. The illuminating device 1 according to the present embodiment includes a straight tubular illuminating tube 2, a bowl-shaped plastic sheet molding 3, a pair of attachments 8 (only one is shown), and a protective tube 9. The mounting tool 8 has a cylindrical shape, and is fixed to both right and left ends of the straight tubular illuminating tube 2, and grooves 81 are formed over the entire circumference at opposite ends. The protective tube 9 is a cylindrical tube made of transparent plastic, and the tube main body 21 is accommodated therein, and is fixed to the mounting tool 8 by press-fitting both ends into the groove 81. A gap S is provided between the protective tube 9 and the tube main body 21 of the straight tubular illuminating tube 2, and the saddle-shaped plastic sheet molding 3 fitted to the tube main body 21 is disposed in the gap S. As a result, the bowl-shaped plastic sheet molded product 3 is held between the tube body 21 and the protective tube 9 of the straight tubular lighting tube 2.

  Therefore, according to the present embodiment, it is possible to arrange the saddle-shaped plastic sheet molding 3 by effectively utilizing the gap S formed between the protective tube 9 and the tube main body 21 of the straight tubular lighting tube 2. In addition, the fixing performance can be improved.

  (Thirteenth embodiment)

  FIG. 14 shows a thirteenth embodiment of the present invention. The illuminating device 1 according to the present embodiment includes a straight tubular illuminating tube 2, a bowl-shaped plastic sheet molding 3, a pair of attachments 8 (only one is shown), and a protective tube 9. Then, the saddle-shaped plastic sheet molded product 3 is fitted to the mounting tool 8 without a stopper due to its own elasticity at both ends on the opposite side of the tube body 21. Therefore, according to the present embodiment, the saddle-shaped plastic sheet molded product 3 is retrofitted to the lighting device constituted by the straight tubular lighting tube 2 and the pair of attachments 8 and the protective tube 9, thereby allowing the present invention. It can be set as the illuminating device 1 which concerns on.

  In the present embodiment, both end portions of the bowl-shaped plastic sheet molded product 3 may be bonded to the mounting tool 8 with an adhesive.

  (Fourteenth embodiment)

  FIG. 15 shows a fourteenth embodiment of the present invention. The lighting device 1 according to the present embodiment includes a straight tubular lighting tube 2, a bowl-shaped plastic sheet molding 3, a pair of attachments 8 (only one shown), a protective tube 9 and a pair of stoppers 44 (only one shown). It consists of The saddle-shaped plastic sheet molding 3 has both ends fitted to the fitting 8 on the opposite side of the tube body 21. The stopper 44 is an elastic ring such as a silicon rubber ring, for example, and is fitted over the mounting tool 8 and the bowl-shaped plastic sheet molding 3 fitted to the mounting tool 8. Yes. Therefore, the annular stopper 43 can improve the fixing performance of the bowl-shaped plastic sheet molded product 3 to the mounting tool 8.

  (Embodiment related to a molded plastic sheet)

  16 (A) to 16 (E) show an embodiment according to the bowl-shaped plastic sheet molding 3 of the present invention. In addition, each figure has shown the cross-sectional shape in the state fitted to the pipe | tube main body 21 of the straight tubular lighting tube 2, and in the state before fitting, it has the shape where the both ends were close | similar by the elasticity of itself. is there.

  That is, the bowl-shaped plastic sheet molding 3 shown in (A) and (B) has a polygonal cross section having a plurality of ridge lines 33. Moreover, the saddle-shaped plastic sheet molding 3 shown in (C) has a semicircular cross section, and the saddle-shaped plastic sheet molding 3 shown in (D) has a substantially quarter circle cross-section. The eaves-shaped plastic sheet molding 3 shown in (E) has a substantially three-quarter cross section.

  It should be noted that the present invention is not limited to those shown in these embodiments, and a larger number of cross-sectional polygonal shapes may be used.

(A) is a vertical schematic cross-sectional view in a direction perpendicular to the illumination tube showing the first embodiment of the present invention, and (B) is a vertical schematic cross-sectional view in a direction parallel to the illumination tube. (A) is a perpendicular | vertical schematic cross section of the direction orthogonal to the illumination tube which shows other embodiment of this invention, (B) is a perpendicular | vertical schematic cross section of the direction parallel to the said illumination tube. (A) is a perpendicular | vertical schematic cross section of the direction orthogonal to the illumination tube which shows the 2nd Embodiment of this invention, (B) is a perpendicular | vertical schematic cross section of the direction parallel to the same illumination tube. (A) is a perpendicular | vertical schematic cross section of the direction orthogonal to the illumination tube which shows the 3rd Embodiment of this invention, (B) is a perpendicular | vertical schematic cross section of the direction parallel to the same illumination tube. (A) is a perpendicular | vertical schematic cross section of the direction orthogonal to the illumination tube which shows the 4th Embodiment of this invention, (B) is a perpendicular | vertical schematic cross section of the direction parallel to the same illumination tube. (A) is a perpendicular | vertical schematic cross section of the direction orthogonal to the illumination tube which shows the 5th Embodiment of this invention, (B) is a perpendicular | vertical schematic cross section of the direction parallel to the said illumination tube. (A) is a perpendicular | vertical schematic cross section of the direction orthogonal to the illumination tube which shows the 6th Embodiment of this invention, (B) is a perpendicular | vertical schematic cross section of the direction parallel to the said illumination tube. (A) is a perpendicular | vertical schematic cross section of the direction orthogonal to the illumination tube which shows the 7th Embodiment of this invention, (B) is a perpendicular | vertical schematic cross section of the direction parallel to the said illumination tube. It is a vertical schematic cross section of the direction parallel to the illumination tube which shows the 8th Embodiment of this invention. It is a vertical schematic cross section of the direction parallel to the illumination tube which shows the 9th Embodiment of this invention. It is a vertical schematic cross section of the direction parallel to the illumination tube which shows the 10th Embodiment of this invention. (A) is a vertical schematic cross-sectional view in a direction orthogonal to the illumination tube showing the eleventh embodiment of the present invention, and (B) is a vertical schematic cross-sectional view in a direction parallel to the illumination tube. It is a vertical schematic cross section of the direction parallel to the illumination tube which shows the 12th Embodiment of this invention. It is a vertical schematic cross section of the direction parallel to the illumination tube which shows the 13th Embodiment of this invention. It is a vertical schematic cross section of the direction parallel to the illumination tube which shows the 14th Embodiment of this invention. It is a vertical sectional view showing an embodiment according to a vertical plastic sheet molding of the present invention. It is a perspective view which shows the conventional illuminating device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Straight tubular lighting tube 3 Molded plastic sheet molding 5 Adhesive 6 Transparent resin film 8 Mounting tool 9 Protective tube 21 Tube body 22 Base 40 Stopper 41 Stopper 42 Annular stop 43 Annular stop 44 Stopper 81 groove S gap

Claims (22)

  An illuminating device formed by fitting a ridge-shaped plastic sheet molding having a reflecting surface with a diffuse reflectance of 85% or more and 120% or less to an illumination tube.   The lighting device according to claim 1, wherein the bowl-shaped plastic sheet molding is fitted without a stopper.   The lighting device according to claim 1, wherein the saddle-shaped plastic sheet molding is fixed and fitted by a stopper.   The lighting device according to claim 3, wherein the stopper is made of an elastic body. The lighting device according to claim 1, wherein the bowl-shaped plastic sheet molding is fixed and fitted by adhesion. The lighting device according to claim 1, wherein the bowl-shaped plastic sheet molding is fixed and fitted by a transparent resin film coated with the lighting tube.   The lighting device according to any one of claims 1 to 6, wherein the lighting tube is a straight tube lighting tube.   An illuminating device in which an annular stopper is provided at both ends of a straight tubular illuminating tube, and a hooked plastic sheet molding having a reflecting surface having a diffuse reflectance of 85% or more and 120% or less is fitted to the annular stopper.   The lighting device according to claim 8, wherein the annular stopper is made of an elastic body.   A transparent rigid plastic protective tube provided with attachments at both ends of the tubular lighting tube, or a vertical plastic sheet molding having a reflective surface with a diffuse reflectance of 85% or more and 120% or less is fitted to the attachment device. A lighting device.   11. The molded plastic sheet molded article is formed by being fixedly fitted and fitted to a transparent hard plastic protective tube that is mounted with mounting devices at both ends of the tubular lighting tube. Lighting equipment.   The saddle-shaped plastic sheet molding is formed by fixing and fitting with a transparent resin film coated on a transparent hard plastic protective tube mounted with a mounting tool at both ends of the tubular lighting tube. The lighting device according to claim 10.   The lighting device according to claim 10, wherein the mounting tool is made of an elastic body.   The lighting device according to claim 10, wherein the bowl-shaped plastic sheet molding is fitted without a stopper.   The lighting device according to claim 10 or 13, wherein the molded plastic sheet molding is fixed and fitted by a stopper.   The lighting device according to claim 15, wherein the wearing tool also serves as the stopper.   Diffuse reflectance is 85% or more and 120% or less in the gap between the tubular lighting tube and the transparent hard plastic protective tube that is mounted with a mounting tool at both ends of the tubular lighting tube to protect the tubular lighting tube. A lighting device formed by fitting a molded plastic sheet having a reflective surface.   A bowl-shaped plastic sheet molding used in the lighting device according to claim 1.   19. The vertical plastic sheet molding according to claim 18, wherein a cross section of the vertical plastic sheet molding is substantially arc-shaped.   20. The vertical plastic sheet molding according to claim 18 or 19, wherein the vertical plastic sheet molding is a sheet or film that reflects light and has a diffuse reflectance of 85% to 120%. .   21. The molded plastic sheet molded article according to claim 20, wherein the sheet or film is a polyester resin foam having closed cells with an average cell diameter of 50 [mu] m or less and a thickness of 80 [mu] m to 2000 [mu] m. 21. The molded plastic sheet molded article according to claim 20, wherein the sheet or film is a polyester resin foam having closed cells with an average cell diameter of 50 [mu] m or less and a thickness of 200 [mu] m to 2000 [mu] m.

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