JP2017016859A - Pattern paper for led lighting frame body, led lighting device, and led lighting device assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide pattern paper for an LED lighting device having a simple structure and excellent in assembly workability, an LED lighting device, and an assembling method for an LED lighting device.SOLUTION: A pattern paper 1 may be formed by punching with a metal mold or by attaching a cutter to a plotter not by using a metal mold but by laser cutting or the like. The pattern paper 1 is constituted of a bottom face part 3, flexing parts 5a, 5b, 5c, 5d and 5e and so on. A flexible flat cable 15 is arranged in a cavity part in a frame part 2, and a light-emitting face of an LED light source 17 is arranged to face an inner side from an opening 11. In a space enclosed by the frame part 2, moreover, a micro foam resin sheet constituting the pattern paper 1 with the whole face is exposed except the opening 11 (the LED light source 17). Thus, the exposed part of the inner face side of a luminaire 23 is enabled to function as a reflection board as a whole.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a lightweight LED illuminating device frame, an illuminating device, and a method for forming an illuminating device frame with a small number of components.

  Because of energy saving and long life, LED (Light Emitting Diode) illumination has become widespread, and many illuminations using LED light sources have been proposed. Some of these lighting devices improve light reflection characteristics by applying a light-reflective organic coating such as a white resist inside the frame of the lighting device. Furthermore, there is one that uses a light reflecting plate for the purpose of improving the illuminance of the lighting device or light diffusion.

  For example, there is an LED light source light box in which an LED light source is arranged inside a box and a light reflection plate is arranged in the box (Patent Document 1).

  Also proposed is a surface illumination device that uses a highly directional LED light source and is provided with reflecting means inside a casing that can obtain uniform illumination light over a wide area without increasing the thickness of the LED light source in the radiation direction. Has been. (Patent Document 2)

Furthermore, there is an illuminating device in which LED light sources are arranged on both side ends of a space formed by a planar lens that is a pair of light outlets of an illumination lamp and a case. (Patent Document 3)

  Patent Document 1 aims to suppress surface illuminance unevenness even when a highly directional LED light source is used.

  However, if many LED light sources are used like patent document 1, cost will increase. Further, Patent Document 1 arranges a light reflecting plate or the like in the box, and has a large number of parts. Further, in order to increase the reflectance on the inner surface of the box, a separate reflecting plate is used. Need to be placed. For this reason, a structure becomes complicated and causes an increase in weight.

  Patent Document 2 is an illumination light source device that includes a light guide having a radiation surface in a radiation direction of a light emitting source and a casing that closes a surface other than the radiation surface of the light guide. However, in addition to the radiation side reflection means provided on the radiation surface, the casing is provided with an inner reflection means, and the molded casing does not also serve as a reflection plate.

  Patent Document 3 has a structure in which a light diffusion film having a light diffusion function and a reflection function is attached to the back surface of a lens arranged in parallel, or the other is attached to a light reflection plate. In the illuminating device of Patent Document 3, the irradiation light of the LED is diffused in a direction orthogonal to the light irradiation direction while being reflected between the light diffusion films or between the light diffusion film and the light reflection plate, and surface-emits from the lens. However, the housing is composed of the device case main body and the lens, and the light diffusion film and the light reflecting plate are attached to the lens that is a part of the housing, and the light diffusion film and the light reflecting plate are used as the housing of the lighting device. It is not something that doubles.

JP 2006-202729 A JP 2008-027886 A JP 2010-177196 A

The present invention has been made in view of such a problem, and has a simple structure and excellent assembling workability, a LED lighting frame pattern, an LED lighting apparatus using a frame manufactured by assembling the pattern, and It aims at providing the assembly method of an LED lighting apparatus.
In the present invention, by using a micro-foamed resin sheet having light reflection characteristics for a pattern, an LED illumination device in which a lightweight frame also serves as a reflector can be provided.

  In order to achieve the above object, a first invention includes a bottom surface portion and a bent portion provided on an outer periphery of the bottom surface portion, and the bottom surface portion and the bent portion have a light reflection characteristic. LED lighting, which is formed of a foamed resin sheet, and by bending the bent portion, a frame-like frame portion having a predetermined height and width and having a hollow frame shape can be formed on the outer periphery of the bottom surface portion. This is a pattern for a frame.

  As the optical characteristics of the micro-foamed resin sheet in the visible light band with a wavelength of 450 to 650 nm, the light reflectance when using a barium sulfate standard piece is at least 90% or more and the diffuse reflectance is 90%. In addition, it is desirable that the total reflectance is 95% or more and the diffuse reflectance is 95% or more.

An insertion piece is provided at an edge of the bent portion, and the insert piece can be inserted and fixed in an insertion hole formed in the bottom surface portion or the bent portion,
The pattern paper shares one side of the portion forming the outer periphery of the bent portion and one side of the portion forming the upper surface of the bent portion, and a portion forming the outer periphery of the bottom portion and the bent portion; It is desirable that the upper surface of the bent portion and the portion forming the inner periphery are integrally formed.

  The paper pattern is formed by separately forming a portion that forms the outer periphery of the bottom portion and the bent portion, and a portion that forms the upper surface and the inner periphery of the bent portion, and further, the bottom portion or the folding portion. An insertion hole is provided in the bent portion, and an insertion piece is provided in a portion that forms the upper surface and the inner periphery of the bent portion. By inserting the insertion piece into the insertion hole, the frame of the lighting device can be formed. Can be formed. Here, the frame of the lighting device can be formed by a single integrated paper pattern, but can also be formed by dividing the paper pattern into a plurality of paper patterns and combining a plurality of separate paper patterns.

  The pattern may have an opening for heat dissipation. Thereby, it becomes possible to discharge | release the heat | fever in the frame-like frame part of a frame to the exterior of a frame from an opening part. Thus, it is desirable to provide the heat radiation opening at a position that is difficult to see on the back side of the lighting device when the lighting device is attached, such as the outer periphery or the upper surface of the frame.

  The bent portion may be provided with an opening for mounting an LED light source. The opening is desirably provided at the time of cutting the paper pattern before bending, but in the case where the opening is a heat radiating hole that does not mount an LED light source or the like, the opening may be provided after bending.

  The flexible flat cable which mounted the LED light source may be comprised, and the said flexible flat cable may be adhere | attached so that the light emission part of the said LED light source may be arrange | positioned at the opening part for said LED light source mounting.

  According to the first aspect of the present invention, since the pattern paper is formed by the micro-foamed resin sheet having light reflection characteristics, an illumination frame having excellent light reflection characteristics can be obtained by bending the pattern paper. In addition, since the frame formed from such a pattern plays the role of a reflector and a substrate at the same time, it is necessary to provide a film having a reflection characteristic such as a white resist inside the frame or to provide a separate reflector. There is no. In particular, the micro-foamed resin sheet is effective as a reflecting plate because it has excellent total reflectance and diffuse reflectance.

  Further, as an optical characteristic for visible light having a wavelength of 450 to 650 nm, at least the total reflectance is 90% or more and the diffuse reflectance is 90% or more, preferably the total reflectance is 95% or more and the diffuse reflectance is 95%. If it is above, light can be reflected efficiently.

  Moreover, when assembling the pattern, each part is fixed only by inserting the insertion piece into the insertion hole, so that the assembly workability is good.

  If the pattern has an opening for heat dissipation, heat generated by the light source can be efficiently radiated.

  Further, if the bent portion is provided with an opening for mounting the LED light source, the LED light source can be exposed from the opening of the pattern paper.

  Moreover, an LED light source can be easily arrange | positioned in a predetermined position by using the flexible flat cable which mounted the LED light source. For this reason, the board | substrate of an LED light source becomes unnecessary.

  According to a second aspect of the present invention, there is provided an LED lighting apparatus in which a frame is formed by folding a pattern for an LED lighting frame according to the first aspect.

  A plurality of the LED light sources may be arranged at a predetermined interval. The plurality of LED light sources may be connected in series or in parallel.

  The exposed part on the inner surface side of the LED lighting device can also function as a reflector except for the opening of the LED light source. By doing in this way, it is not necessary to attach a reflecting plate separately.

  An insertion piece is provided at an edge of the bent portion, and the insert piece can be inserted into and fixed to the insertion hole formed in the bottom surface portion or the bent portion, and the width and height of the insertion hole. Is preferably smaller than the width and height of the insertion piece.

It is desirable that an angle formed by the inner surface and the bottom surface of the frame portion is 70 ° or more and less than 90 °.
Furthermore, it is desirable that it is 70 degrees or more and less than 80 degrees. By attaching the LED light source to the inner surface of the frame set at such an angle, glare during use of the LED illumination can be reduced.

  The LED light sources are preferably connected in series or in parallel on the flexible flat cable. By doing in this way, an LED light source can be easily attached to a frame, and it can be bent and folded up freely on a frame. For this reason, an illuminating device can be manufactured only by sticking a flexible flat cable to a frame, without arrange | positioning an LED light source on board | substrates, such as copper foil and a glass epoxy.

  A reflection protrusion may be provided at the center of the bottom surface. By providing a reflective protrusion at the center of the bottom surface, the brightness of the luminaire near the bottom surface far from the LED light source and the vicinity of the LED light source can be made uniform, and light of uniform brightness can be obtained from the illumination surface of the luminaire Can be irradiated.

  A light diffusion plate may be provided on the light extraction surface of the frame. The light diffusion plate can be made of milky white glass or acrylic resin, but it is desirable to use an acrylic resin diffusion plate rather than a glass diffusion plate.

  According to the second invention, it is possible to obtain an illuminating device excellent in assemblability. In other words, the LED lighting frame can be easily assembled using a pattern, and unlike the usual resin molding, there is no need to manufacture a mold, and the design can be changed by changing the pattern shape. A frame of a lighting fixture can be manufactured.

  Further, if a plurality of LED light sources are arranged at a predetermined interval, more uniform light can be diffused downward and irradiated.

  Moreover, since the inner surface side of LED illumination functions as a reflecting plate except an opening part, a separate reflecting plate is unnecessary. Thereby, the weight reduction of an illuminating device is attained.

  The width and height of the insertion hole may be equal to the width and height of the insertion piece, but in order to prevent light leakage from the insertion assembly, the width and height of the insertion hole are slightly smaller than the width and height of the insertion piece. It is desirable to be small. Moreover, if the width and height of the insertion hole are smaller than the width and height of the insertion piece, the insertion piece can be press-fitted and the insertion hole can be deformed and inserted into the insertion hole, so that it can be fixed more reliably.

  If the angle formed by the inner surface and the bottom surface of the frame portion is 70 ° or more and less than 90 °, light can be efficiently reflected and diffused. For this reason, it helps to make the luminance distribution inside the lighting device uniform, and at the same time makes it difficult to see the light source directly, which helps to reduce glare. Further, the angle between the inner surface and the bottom surface can be an obtuse angle of 90 ° or more instead of an acute angle by changing the design of the pattern. In this way, by designing the obtuse angle, the LED light source can be arranged at a position that can be seen from directly below the light irradiation surface, and thus can be applied to direct illumination.

  Moreover, an LED light source can be easily arrange | positioned in a predetermined position by connecting an LED light source on a flexible flat cable. Since the LED light source is arranged on the flexible flat cable, the heat generated from the LED light source can be efficiently released to the outside through the conductive wire of the flexible flat cable.

  Further, by providing the reflection protrusion at the center of the bottom surface portion, more uniform light can be uniformly diffused downward and irradiated. Thereby, the brightness of the part far from the LED light source can be made uniform with the vicinity of the LED light source.

  Further, by providing a light diffusion plate on the light extraction surface, more uniform light can be diffused downward and irradiated.

  3rd invention comprises the bottom part, the bending part provided in the outer periphery of the said bottom part, and the flexible flat cable which mounted the LED light source, LED illumination made from the micro foaming resin sheet which has a light reflection function Using a pattern for a frame, the bent portion is provided with an opening for mounting an LED light source, an insertion piece is provided at an edge of the bent portion, and the bottom portion or the bent portion is provided. An insertion hole is formed, and the flexible flat cable is bonded to the template so that a light emitting surface of the LED light source is exposed in the opening for mounting the LED light source, the bent portion is bent, and the insertion piece is An assembly method of an LED lighting device, wherein the LED lighting device is inserted into an insertion hole, and a frame-shaped frame portion having a constant height and a predetermined width is formed on the outer periphery of the bottom surface and fixed.

  According to the third aspect of the invention, the LED lighting device can be easily assembled.

  ADVANTAGE OF THE INVENTION According to this invention, the pattern for LED lighting frame bodies which were excellent in the assembly workability | operativity with the simple structure, the LED lighting apparatus, and the assembly method of an LED lighting apparatus can be provided. In particular, if the lighting device of the present invention has a wiring that can be connected to the frame pattern paper, the LED light source and the power source or the control device, the LED lighting device can be provided without providing a reflector or a substrate for fixing the LED light source. Can be created. In particular, the frame of the present invention uses a micro foam resin having a high diffuse reflectance, and the light emitted from the LED light source is repeatedly reflected on the frame inside the frame, so that it is uniform from the light extraction surface of the light diffusion plate. Light can be easily extracted, and a planar LED lighting device without a glare can be easily obtained.

The figure which shows the pattern paper 1. FIG. (A) is a front view of the flexible flat cable 15, (b) is a rear view of the flexible flat cable 15. The figure which shows the pattern paper 1 with which the flexible flat cable 15 was affixed. The figure which shows the frame 21. FIG. Sectional drawing which shows the frame 21. Sectional drawing which shows the frame 21a. Sectional drawing which shows the frame 21b. The bottom view which shows the frame 21c. Sectional drawing which shows the frame 21c. The figure which shows the pattern paper 1a.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a development view showing a pattern 1. The paper pattern 1 is a paper pattern for an LED illumination frame. The pattern paper 1 is formed from a micro-foamed resin sheet (a porous member having a large number of fine mechanisms) having light reflection characteristics. The microfoamed resin sheet used in the present invention is an insulating foamed resin sheet having a foamed layer at the center in the thickness direction and non-foamed layers on both sides. Here, the foam layer refers to a layer in which bubbles are generated by foaming.

  In the present invention, the thickness of the microfoamed resin sheet is 0.4 mm to 2.0 mm, and the thickness of the non-foamed layer is 10 to 30 μm. The microfoamed resin sheet preferably has an average cell diameter in the range of 0.2 μm to 40 μm. Here, if the average bubble diameter is less than 0.2 μm, the light transmittance increases and the reflectance decreases. If the average bubble diameter is too large, the diffuse reflectance decreases, so the average bubble diameter needs to be 0.2 μm to 40 μm. Further, the average bubble diameter is preferably 0.5 μm to 20 μm.

  The micro-foamed resin sheet is made of a thermoplastic resin, and the optical reflectance when using a barium sulfate standard piece as an optical characteristic in the visible light band with a wavelength of 450 to 650 nm is a total reflectance of 90% or more, and a diffuse reflectance of 90 % Or more, and the wavelength dependence of reflectance is in the range of 1% or less. The total reflectance is preferably 95% or more, and both diffuse reflectances are 95% or more. The micro-foamed resin sheet is effective as a reflector because it is excellent in both total reflectance and diffuse reflectance.

Here, the micro-foamed resin sheet of the present invention is an insulating substrate, and its volume resistivity is 10 ¹² Ω to 10 ¹¹ Ω. If it is this range, the insulation in this invention can fully be ensured.

  In the present invention, the microfoamed resin sheet is composed of any one of PET resin (polyethylene terephthalate resin), PC resin (polycarbonate resin), flame-retardant PC resin, acrylic resin, for example, PMMA resin (polymethyl methacrylate resin). It is preferable. In addition to the above, a transparent resin obtained by imparting flame retardancy to an acrylic resin such as a cycloolefin polymer or polyacrylonitrile can also be used for the microfoamed resin sheet.

The pattern paper 1 may be formed by punching with a mold, or may be formed by attaching a cutter to a drawing apparatus without using a mold, laser cutting, or the like.
Here, it is desirable to make a shallow cut with a cutter in the micro-foamed resin sheet so that it can be easily folded at the position of the folding line of the folding portion. By doing in this way, a micro foaming resin sheet becomes easy to bend and a frame becomes easy to assemble. In the case of forming the frame body using the unfolded pattern paper, since the frame body is not deformed except for the folding line, the frame body can maintain the optical characteristics of the micro-foamed resin before molding.

  The pattern paper 1 is composed of a bottom surface portion 3, bent portions 5a, 5b, 5c, 5d, 5e, and the like. That is, the bottom surface portion 3 and the bent portions 5a, 5b, 5c, 5d, and 5e are formed of a microfoamed resin sheet. The bottom surface portion 3 has a substantially rectangular shape. On the outer periphery of the bottom surface portion 3, a pair of bent portions 5a are formed on the short side and a pair of bent portions 5b are formed on the long side.

  A bent portion 5c is provided on the side of the bent portion 5b on one side. That is, the bottom surface portion 3 and the bent portion 5c are arranged with the bent portion 5b on one side interposed therebetween. The bent portion 5c has an outer shape corresponding to the outer shape of the bottom surface portion 3, and has an annular shape with the center portion hollowed out.

  On the inner peripheral side of the bent portion 5c, a pair of bent portions 5d are formed on the short side, and a pair of bent portions 5e are formed on the long side. In addition, each boundary part of the bottom face part 3 and bending part 5a, 5b, 5c, 5d, 5e becomes a part which actually folds a pattern paper. In addition, arrangement | positioning of each bending part 5a, 5b, 5c, 5d, 5e is not restricted to the example shown in figure. The bent portions 5c, 5d, and 5e are not directly in contact with the bottom surface portion 3, but are described as being provided on the outer periphery of the bottom surface portion 3 through other bent portions 5a and 5b. To do.

  Next, the opening part 11, the opening part 13, and the insertion hole 7 are demonstrated. One or a plurality of openings 13 are provided in the bent portions 5a and 5b. The opening 13 is a hole for heat dissipation. Moreover, the some insertion hole 7 is installed in each bending part 5a, 5b along each side. Moreover, the insertion hole 7 is formed in the both ends of the bending part 5b, and the insertion piece 9 is formed in the both ends (edge part) of the bending part 5a. Here, since the opening 13 is a hole for heat dissipation, it is not always necessary, but can be appropriately provided if necessary for the thermal design of the lighting device.

  On the outer periphery (edge portion) of the bent portion 5c, insertion pieces 9 are provided at predetermined intervals in the circumferential direction except for the portion connected to the bent portion 5b. Further, insertion pieces 9 are provided on the inner peripheral sides (edges) of the bent portions 5d and 5e, respectively. Moreover, the opening part 11 is provided in bending part 5d, 5e. The opening 11 is a hole for mounting the LED light source 17.

  FIG. 2A is a front view showing the flexible flat cable 15, and FIG. 2B is a rear view showing the flexible flat cable 15. In the following description, illustration of the wiring to the flexible flat cable 15 is omitted.

  The flexible flat cable 15 is obtained by coating one surface and the other surface of a circuit conductor (for example, a circuit formed of copper foil or a circuit) with a resin (for example, PET, polyimide, or polyethylene naphthalate). Specifically, conductors having a rectangular cross section are arranged at regular intervals, the upper and lower sides are sandwiched between plastic film tapes, heat and pressure are applied, and the tape joining surface is heat-welded or heat-sealed with an adhesive. At least a pair of circuit conductors are formed inside the flexible flat cable 15 cut to a predetermined length, and a conductor member 22 that conducts these circuit conductors is provided near the end of the flexible flat cable 15. Provided. The conductor member 22 is electrically connected to the internal circuit conductor. That is, the wiring circuit 19 is formed by the circuit conductor and the conductor member 22.

  A plurality of LED light sources 17 are arranged on the flexible flat cable 15 at a predetermined interval. The electrode terminal of the LED light source 17 is penetrated from the surface of the flexible flat cable 15 to the internal wiring circuit 19, or one surface of the coating resin is peeled off, and the electrode terminal and the wiring circuit 19 are soldered or brazed at a low temperature. By performing the above, the internal wiring circuit 19 and the LED light source 17 can be conducted, and the LED light source 17 can be mounted on the flexible flat cable 15. The LED light source 17 may be connected in series to the wiring circuit 19 or may be connected in parallel.

  FIG. 3 is a view showing a state in which the flexible flat cable 15 is bonded to the pattern 1. The flexible flat cable 15 is attached to the bent portions 5d and 5e. At this time, the light emitting portion (light emitting surface) of the LED light source 17 is disposed so as to be exposed to the opening 11.

  Next, a frame (illuminating device) formed using the pattern 1 will be described. 4 is a bottom view showing the frame body 21, and FIG. 5 is a cross-sectional view taken along line AA of FIG.

  First, the insertion pieces 9 at both ends of the bending portion 5a are inserted into the insertion holes 7 at both ends of the bending portion 5b. Moreover, the insertion piece 9 on the outer periphery of the bent portion 5c is inserted into the insertion hole 7 arranged along the sides of the bent portions 5a and 5b. The insertion pieces 9 of the bent portions 5d and 5e are inserted into the insertion holes 7 of the bent portions 5a and 5b (the insertion holes 7 in the vicinity of the boundary portion with the bottom surface portion 3).

  That is, the bent portions 5 a and 5 b constitute a side surface portion of the frame body 21, and the bent portion 5 c is a surface facing the bottom surface portion 3. Further, the bent portions 5 d and 5 e constitute the inner peripheral surface of the frame portion 2.

  The width and height of the insertion hole 7 are preferably smaller than the width and height of the insertion piece 9. By doing in this way, when inserting the insertion piece 9 in the insertion hole 7, the insertion piece 9 deform | transforms and it becomes difficult to remove | insert the insertion piece 9. FIG. For this reason, a shape can be hold | maintained more reliably.

  In this way, by folding the bent portions 5a, 5b, 5c, 5d, and 5e, the frame-like frame portion 2 having a predetermined height and width and having a hollow inside is formed on the outer periphery of the bottom surface portion 3. Fixed. The angle B formed by the inner surface of the frame portion 2 and the bottom surface portion 3 is preferably 70 ° or more and less than 90 °. When the angle B is 90 ° or more, the light from the LED light source 17 is directly emitted from the opening of the frame 2 that is a light extraction port, and the effect of indirect light is diminished. Moreover, when the angle B is less than 70 °, the light from the LED light source 17 does not easily reach the center of the illumination device 23 (bottom surface portion 3).

  A flexible flat cable 15 is disposed in a hollow portion inside the frame portion 2, and the light emitting surface of the LED light source 17 is disposed from the opening portion 11 so as to face inward (the bottom surface portion 3 side). Moreover, the opening part 13 is arrange | positioned in bending part 5a, 5b of the site | part by which the LED light source 17 is arrange | positioned. The opening 13 emits heat from the LED light source 17 to the outside.

  Further, in the space surrounded by the inner peripheral surface and the bottom surface portion 3 of the frame portion 2, the entire surface of the micro foam resin sheet constituting the pattern paper 1 is exposed except for the opening portion 11 (LED light source 17). For this reason, all the exposed parts on the inner surface side of the illumination device 23 can function as a reflector.

  When the LED light source 17 is caused to emit light, the light from the LED light source 17 is not directly irradiated, but is diffused and reflected on the inner surface of the illumination device 23 and irradiated from the light extraction unit surrounded by the frame part 2. For this reason, light can be uniformly diffused downward and irradiated without using a lens or the like. As a result, it is possible to produce an indirect illumination effect that is soft and calm, with no uneven illumination or shadows. In addition, when installing the illuminating device 23 on a ceiling, the bottom face part 3 turns into the top | upper surface side, and the light extraction part is arrange | positioned toward the downward direction.

  As described above, according to the present embodiment, the frame body 21 is formed using the paper pattern 1 having excellent reflection characteristics, so that the assembly workability is good. Moreover, since the flexible flat cable 15 is affixed to the pattern 1, the number of components is small and the frame body 21 is made of a micro-foamed resin sheet having excellent light reflection characteristics. be able to. Further, since the frame body is formed by bending the mold frame, for example, a reverse taper type frame body that cannot be formed by vacuum molding or the like can be formed.

  Further, the pattern paper 1 shares one side of the portion (folded portions 5a, 5b) that forms the outer periphery of the folded portion and one side of the portion that forms the upper surface of the folded portion (folded portion 5c). The part 3 and the part that forms the outer periphery of the bent part (the bent parts 5a and 5b) and the part that forms the upper surface and inner periphery of the bent part (the bent parts 5c, 5d, and 5e) are integrally formed. ing. That is, the paper pattern 1 is not separated into a plurality. For this reason, assembly is easy.

  In addition, since the LED light source 17 is disposed on the inner surface side of the frame portion 2, the LED light source 17 cannot be seen, so that the light source is not easily noticeable.

  Moreover, since the opening part 13 is formed in the back side of the LED light source 17, it is excellent also in heat dissipation.

  Next, a second embodiment will be described. FIG. 6 is a cross-sectional view of the frame 21a (illumination device 23a). In the following description, components having the same functions as those of the frame body 21 (illuminating device 23) and the like are denoted by the same reference numerals as in FIGS.

  The frame body 21a has substantially the same configuration as the frame body 21 except that the insertion pieces 9 of the bent portions 5d and 5e are inserted into the insertion holes 7 formed on the bottom surface portion 3 side. That is, in the frame body 21, the cross-sectional shape of the frame portion 2 is substantially triangular, but in the frame body 21a, the frame portion 2 is substantially trapezoidal. Even in this case, the angle formed by the inner surface of the frame portion 2 and the bottom surface portion 3 is desirably 70 ° or more and less than 90 °. Furthermore, it is more desirable that it is 70 degrees or more and less than 80 degrees.

  In the frame body 21 a, an opening 13 a is formed in the bottom surface portion 3. That is, the holes for heat dissipation are arranged not on the side surface of the frame body 21a but on the bottom surface side.

  According to the second embodiment, an effect similar to that of the first embodiment can be obtained. Thus, the heat radiation openings 13, 13a may be formed on either the side surface or the bottom surface.

  Next, a third embodiment will be described. FIG. 7 is a cross-sectional view of the frame 21b (illumination device 23b). The illumination device 23b has substantially the same configuration as the illumination device 23, but differs in that a light diffusing plate 25 is provided. A light diffusing plate 25 is provided in the opening facing the bottom surface 3 of the frame body 21b so as to close the opening. The light diffusing plate 25 is made of, for example, light transmissive glass or resin.

  The light diffusion plate 25 diffuses light when light is transmitted. For this reason, by using the light diffusing plate 25, the light irradiated from the LED light source 17 and diffusely reflected by the inner surface of the frame body 21b can be further diffused.

  According to the third embodiment, the same effect as that of the first embodiment can be obtained. Further, the light diffusing plate 25 can diffuse light more reliably and spread the light over a wide range.

  Next, a fourth embodiment will be described. FIG. 8 is a bottom view of the frame body 21c (illuminating device 23c), and FIG. 9 is a cross-sectional view taken along the line CC of FIG. The illuminating device 23c is substantially the same as the illuminating device 23, but differs in that a reflecting projection 27 is provided.

  The reflection protrusion 27 is continuously formed in the longitudinal direction along the center line of the bottom surface portion 3. The reflection protrusion 27 has an inclined surface that is inclined with respect to the bottom surface portion 3, and protrudes toward the opening surrounded by the frame portion 2. That is, the reflective protrusion 27 is inclined so that the surface facing the LED light source 17 is toward the light extraction port. The reflection protrusion 27 is formed in advance on the microfoamed resin sheet by vacuum molding or the like before the pattern 1 is manufactured.

  By disposing the reflection protrusion 27, a large amount of light can be emitted to the light extraction port side at a position away from the LED light source 17. For this reason, the difference in brightness due to 1 can be reduced.

  According to the fourth embodiment, the same effect as that of the first embodiment can be obtained. Further, the light can be emitted more uniformly by the reflection protrusion 27.

  Next, a fifth embodiment will be described. FIG. 10 is a plan view showing the pattern 1a. The paper pattern 1a is obtained by dividing the paper pattern 1 into two separate paper patterns. Mimicry, the pattern 1a includes a bottom portion 3 and a portion that forms the outer periphery of the folded portion (folded portions 5a and 5b), and a portion that forms the upper surface and the inner periphery of the folded portion (folded portion 5c, 5d and 5e) are formed separately.

  Further, the insertion hole 7 is provided in the bottom surface portion 3 or the bent portions 5a and 5b, and the insert piece 9 is provided in a portion (the bent portions 5c, 5d, and 5e) that forms the upper surface and the inner periphery of the bent portion. By inserting the insertion piece 9 into the insertion hole 7, a frame of the lighting device can be formed. That is, a frame similar to the illumination frame using the paper pattern 1 can be obtained by combining and integrating the separated paper patterns.

  According to the fifth embodiment, the same effects as those of the first embodiment can be obtained. Thus, the pattern paper of the present invention does not necessarily have to be integrated as a whole, and a part thereof may be separated. As described above, in the present invention, a micro foamed resin reflecting plate having a paper pattern structure having excellent assemblability and high diffuse reflectance is used as a frame, so that a uniform brightness can be obtained without providing a reflecting plate. In addition, it is possible to easily obtain a surface emitting illumination device that does not have a glare.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

DESCRIPTION OF SYMBOLS 1, 1a ......... Pattern 2 ......... Frame part 3 ......... Bottom part 5a, 5b, 5c, 5d, 5e ......... Bending part 7 ......... Insertion hole 9 ......... Insertion piece 11 ......... Opening portion 13, 13a ......... Opening portion 15 ......... Flexible flat cable 17 ......... LED light source 19 ......... Wiring circuits 21, 21a, 21b, 21c ......... Frame body 22 ......... Conductive members 23, 23a , 23b, 21c ......... lighting device 25 ......... light diffusion plate 27 ......... reflective protrusion

In order to achieve the above-described object, the first invention includes a substantially rectangular bottom surface portion, an outer peripheral bent portion provided on an outer periphery of the bottom surface portion, and the bottom surface portion sandwiching a long side of the outer peripheral bent portion. A top side bent portion that has an outer shape corresponding to the outer shape of the bottom surface portion to be connected, the center portion is hollowed out and faces the bottom surface portion when bent, and a short side on the inner peripheral side of the top surface bent portion A pair of inner peripheral bent portions formed on the side and the longer side, respectively, and the bottom surface portion, the outer peripheral bent portion, the upper surface bent portion, and the inner peripheral bent portion have a light reflection characteristic. It is formed of a foamed resin sheet, and a predetermined height and a predetermined width are obtained by bending the outer peripheral bent portion, the upper surface bent portion, and the inner peripheral bent portion at a bending line at a boundary portion of each bent portion. A frame-shaped frame portion having a hollow inside is disposed outside the bottom surface portion. A paper for LED lighting frame body, characterized in that it can be formed into.

An insertion piece is provided at an edge of the upper surface bent portion and the inner peripheral bent portion, and the insert piece can be inserted and fixed in an outer periphery of the bottom surface portion or an insertion hole formed in the outer peripheral bent portion. , and the said paper has a outer peripheral bent portion which forms the outer periphery of the bottom portion, share the top bent portion and is one side to form a top surface facing the bottom portion, said bottom portion, said It is desirable that the outer peripheral bent portion , the upper bent portion, and the inner peripheral bent portion that form the outer periphery of the bottom surface portion are integrally formed.

The pattern paper includes the bottom surface portion , the outer periphery bent portion that forms the outer periphery of the bottom surface portion, the upper surface facing the bottom surface portion, the upper surface bent portion that forms the inner periphery of the upper surface, and the inner periphery bent portion . Are formed separately, and an insertion hole is provided in the outer periphery of the bottom surface portion or the outer periphery bent portion, and the upper surface bent portion that forms the upper surface facing the bottom surface portion and the inner periphery of the upper surface, and the The insertion piece is provided in the inner periphery bending part , and the frame of an illuminating device can also be formed by inserting the insertion piece into the insertion hole.

The inner bent portion may be provided with an opening for mounting an LED light source. The opening is desirably provided at the time of cutting the paper pattern before bending, but in the case where the opening is a heat radiating hole that does not mount an LED light source or the like, the opening may be provided after bending.

Moreover, if an opening part for LED light source mounting is provided in an inner periphery bending part, an LED light source can be exposed from the opening part of a pattern paper.

An insertion piece is provided at an edge of the upper surface bent portion and the inner peripheral bent portion, and the insert piece is inserted and fixed to an outer periphery of the bottom surface portion or an insertion hole formed in the outer peripheral bent portion. The width and height of the insertion hole are preferably smaller than the width and height of the insertion piece.

A light diffusing plate may be provided so as to cover the upper surface bent portion on the light extraction surface of an annular opening formed in the center of the upper surface bent portion of the frame. The light diffusion plate can be made of milky white glass or acrylic resin, but it is desirable to use an acrylic resin diffusion plate rather than a glass diffusion plate.

According to a third aspect of the present invention, there is provided a substantially rectangular bottom surface portion, an outer periphery bent portion provided on an outer periphery of the bottom surface portion, and a top surface fold that shares one side with the outer periphery bent portion and faces the bottom surface portion when bent. A pattern having a bending portion and an inner periphery bending portion provided on an inner periphery of the upper surface bending portion, and a flexible flat cable mounted with an LED light source, and the pattern has a light reflection function. It is a pattern for an LED lighting frame made of a foamed resin sheet, and the inner peripheral bent portion is provided with an opening for mounting an LED light source, and is provided at an edge of the upper surface bent portion and the inner peripheral bent portion. The flexible flat cable is provided with an insertion piece, an insertion hole is formed in the bottom surface portion or the outer peripheral bent portion, and the light emitting surface of the LED light source is exposed in the opening for mounting the LED light source. Inside It is bonded to the rear surface of the bent portion, the outer peripheral bent portion, the top bent portion, and the inner peripheral bent portion bent at folding line of a boundary portion of each of the bent portion, the insertion piece to the insertion hole An LED lighting device assembling method comprising inserting and fixing a frame-like frame portion having a predetermined height and a predetermined width on the outer periphery of the bottom surface.

The pattern paper 1 may be formed by punching with a mold, or may be formed by attaching a cutter to a drawing apparatus without using a mold, laser cutting, or the like.
Here, it is desirable to make a shallow cut with a cutter in the micro-foamed resin sheet so that it can be easily folded at the position of the folding line of the folding portion . By doing in this way, a micro foaming resin sheet becomes easy to bend and a frame becomes easy to assemble. In the case of forming the frame body using the unfolded pattern paper, since the frame body is not deformed except for the folding line, the frame body can maintain the optical characteristics of the micro-foamed resin before molding.

The paper pattern 1 includes a bottom surface portion 3, outer periphery bent portions 5a and 5b, an upper surface bent portion 5c, inner peripheral bent portions 5d and 5e, and the like. That is, the bottom surface portion 3, the outer periphery bent portions 5a and 5b, the upper surface bent portion 5c, and the inner periphery bent portions 5d and 5e are formed of a microfoamed resin sheet. The bottom surface portion 3 has a substantially rectangular shape. On the outer periphery of the bottom surface portion 3, a pair of outer peripheral bent portions 5a are formed on the short side, and a pair of outer peripheral bent portions 5b are formed on the long side.

An upper surface bent portion 5c is provided on the side of the outer peripheral bent portion 5b on one side. That is, the bottom surface portion 3 and the top surface bent portion 5c are arranged with the outer peripheral bent portion 5b on one side interposed therebetween. The upper surface bent portion 5c has an outer shape corresponding to the outer shape of the bottom surface portion 3, and has an annular shape with the center portion hollowed out.

On the inner peripheral side of the upper surface bent part 5c, a pair of inner peripheral bent parts 5d are formed on the short side, and a pair of inner peripheral bent parts 5e are formed on the long side. In addition, each boundary part of the bottom face part 3, the outer periphery bending parts 5a and 5b, the upper surface bending part 5c, and the inner periphery bending parts 5d and 5e becomes a part which actually bends the pattern paper. In addition, arrangement | positioning of the outer periphery bending parts 5a and 5b, the upper surface bending part 5c, and the inner periphery bending parts 5d and 5e is not restricted to the example shown in figure. The upper surface bent portion 5c and inner peripheral bent portions 5d and 5e are not in direct contact with the bottom surface portion 3, but are provided on the outer periphery of the bottom surface portion 3 through other outer peripheral bent portions 5a and 5b. It will be described as being.

Next, the opening part 11, the opening part 13, and the insertion hole 7 are demonstrated. One or a plurality of openings 13 are provided in the outer peripheral bent portions 5a and 5b. The opening 13 is a hole for heat dissipation. Moreover, the some insertion hole 7 is installed in each outer periphery bending part 5a, 5b along each edge | side. Moreover, the insertion hole 7 is formed in the both ends of the outer periphery bending part 5b, and the insertion piece 9 is formed in the both ends (edge part) of the outer periphery bending part 5a. Here, since the opening 13 is a hole for heat dissipation, it is not always necessary, but can be appropriately provided if necessary for the thermal design of the lighting device.

On the outer periphery (edge) of the upper surface bent portion 5c, insertion pieces 9 are provided at predetermined intervals in the circumferential direction except for the portion connected to the outer peripheral bent portion 5b. Further, the inner circumferential bent portion 5d, 5e inner periphery side of the (edge), insert piece 9, respectively are juxtaposed. Moreover, the opening part 11 is provided in the inner periphery bending parts 5d and 5e. The opening 11 is a hole for mounting the LED light source 17.

FIG. 3 is a view showing a state in which the flexible flat cable 15 is bonded to the pattern 1. The flexible flat cable 15 is affixed to the back side of the inner peripheral bent portions 5d and 5e. At this time, the light emitting portion (light emitting surface) of the LED light source 17 is disposed so as to be exposed to the opening 11.

First, the insertion pieces 9 at both ends of the outer peripheral bent portion 5a are inserted into the insertion holes 7 at both ends of the outer peripheral bent portion 5b. Moreover, the insertion piece 9 on the outer periphery of the upper surface bent part 5c is inserted into the insertion hole 7 arranged along the sides of the outer peripheral bent parts 5a and 5b. Further, the insertion pieces 9 of the inner peripheral bent portions 5d and 5e are inserted into the insertion holes 7 of the outer peripheral bent portions 5a and 5b (insertion holes 7 near the boundary with the bottom surface portion 3).

That is, the outer peripheral bent portions 5 a and 5 b constitute a side surface portion of the frame body 21, and the upper surface bent portion 5 c is a surface facing the bottom surface portion 3. Further, the inner peripheral bent portions 5 d and 5 e constitute the inner peripheral surface of the frame portion 2.

In this way, the outer peripheral bent portions 5a and 5b, the upper surface bent portion 5c, and the inner peripheral bent portions 5d and 5e are bent, so that the inside of the bottom portion 3 having a predetermined height and predetermined width is a hollow frame. A frame 2 is formed and fixed. The angle B formed by the inner surface of the frame portion 2 and the bottom surface portion 3 is preferably 70 ° or more and less than 90 °. When the angle B is 90 ° or more, the light from the LED light source 17 is directly emitted from the opening of the frame 2 that is a light extraction port, and the effect of indirect light is diminished. Moreover, when the angle B is less than 70 °, the light from the LED light source 17 does not easily reach the center of the illumination device 23 (bottom surface portion 3).

A flexible flat cable 15 is disposed in a hollow portion inside the frame portion 2, and the light emitting surface of the LED light source 17 is disposed from the opening portion 11 so as to face inward (the bottom surface portion 3 side). Moreover, the opening part 13 is arrange | positioned in the outer periphery bending part 5a, 5b of the site | part by which the LED light source 17 is arrange | positioned. The opening 13 emits heat from the LED light source 17 to the outside.

Further, the pattern paper 1 has one side that forms the outer periphery of the bottom surface portion 3 ( peripheral bent portions 5a and 5b) and one side that forms the upper surface facing the bottom surface portion 3 ( upper surface bent portion 5c). A portion that forms the outer periphery of the bottom surface portion 3 and the bottom surface portion 3 ( peripheral bent portions 5a and 5b), and a portion that forms the inner periphery of the upper surface and the upper surface facing the bottom surface portion 3 (the upper surface bent portion 5c, Inner bent portions 5d and 5e) are integrally formed. That is, the paper pattern 1 is not separated into a plurality. For this reason, assembly is easy.

The frame body 21a has substantially the same configuration as the frame body 21, but differs in that the insertion pieces 9 of the inner peripheral bent portions 5d and 5e are inserted into the insertion holes 7 formed on the bottom surface portion 3 side. That is, in the frame body 21, the cross-sectional shape of the frame portion 2 is substantially triangular, but in the frame body 21a, the frame portion 2 is substantially trapezoidal. Even in this case, the angle formed by the inner surface of the frame portion 2 and the bottom surface portion 3 is desirably 70 ° or more and less than 90 °. Furthermore, it is more desirable that it is 70 degrees or more and less than 80 degrees.

In the frame body 21a , an opening 13a is formed in the bottom surface portion 3. That is, the holes for heat dissipation are arranged not on the side surface of the frame body 21a but on the bottom surface side.

Next, a third embodiment will be described. FIG. 7 is a cross-sectional view of the frame 21b (illumination device 23b). The illuminating device 23b has substantially the same configuration as the illuminating device 23, but the light diffusing plate covers the upper surface bent portion on the light extraction surface of the annular opening formed at the center of the upper surface bent portion of the frame. The difference is that 25 is provided. A light diffusing plate 25 is provided in the opening facing the bottom surface 3 of the frame body 21b so as to close the opening. The light diffusing plate 25 is made of, for example, light transmissive glass or resin.

By disposing the reflection protrusion 27, a large amount of light can be emitted to the light extraction port side at a position away from the LED light source 17. For this reason, the difference in brightness depending on the position can be reduced.

Next, a fifth embodiment will be described. FIG. 10 is a plan view showing the pattern 1a. The paper pattern 1a is obtained by dividing the paper pattern 1 into two separate paper patterns. Mimicry, the paper pattern 1a includes a bottom surface portion 3 and a portion forming the outer periphery of the bottom surface portion 3 ( peripheral bent portions 5a and 5b), and a top surface facing the bottom surface portion 3 and a portion forming the inner periphery of the top surface ( The upper surface bent part 5c and the inner peripheral bent parts 5d, 5e) are formed separately.

Further, the bottom portion 3 or the outer peripheral bent portion 5a, the hole 7 inserted into 5b is provided, the portion forming the inner periphery of the upper surface and the upper surface facing the bottom portion 3 (the upper surface bent portion 5c, the inner circumferential bent portion 5d, An insertion piece 9 is provided in 5e). By inserting the insertion piece 9 to insertion hole 7, you are possible to form the frame of the lighting device. That is, a frame similar to the illumination frame using the paper pattern 1 can be obtained by combining and integrating the separated paper patterns.

DESCRIPTION OF SYMBOLS 1, 1a ......... Pattern 2 ......... Frame part 3 ......... Bottom part 5a, 5b ......... Bending part of outer periphery
5c ......... Bending part on the upper surface
5d, 5e ....... Bending portion 7 ......... Insertion hole 9 ......... Insertion piece 11 ......... Opening portion 13, 13a ......... Opening portion 15 ......... Flexible flat cable 17 ......... LED light source 19 ......... Wiring circuits 21, 21a, 21b, 21c ......... Frame body 22 ......... Conductive members 23, 23a, 23b, 21c ......... Lighting device 25 ......... Light diffusion plate 27 ......... Reflection protrusion

Claims (16)

A bottom portion and a bent portion provided on the outer periphery of the bottom portion;
The bottom surface portion and the bent portion are formed of a micro-foamed resin sheet having light reflection characteristics,
A pattern for an LED lighting frame, wherein a frame-like frame portion having a predetermined height and width and having a hollow interior can be formed on the outer periphery of the bottom surface portion by bending the bent portion.   As an optical characteristic in the visible light band with a wavelength of 450 to 650 nm of the microfoamed resin sheet, the light reflectance when using a barium sulfate standard piece is 95% or more in total reflectance and 95% or more in diffuse reflectance. The pattern for an LED lighting frame according to claim 1. An insertion piece is provided at an edge of the bent portion, and the insert piece can be inserted and fixed in an insertion hole formed in the bottom surface portion or the bent portion,
The pattern paper shares one side of the portion forming the outer periphery of the bent portion and one side of the portion forming the upper surface of the bent portion, and a portion forming the outer periphery of the bottom portion and the bent portion; The pattern for the LED lighting frame according to claim 1, wherein an upper surface of the bent portion and a portion forming an inner periphery are integrally formed.   In the pattern paper, a portion forming the outer periphery of the bottom portion and the bent portion and a portion forming the upper surface and inner periphery of the bent portion are formed separately, and the bottom portion or the folding portion is further formed. An insertion hole is provided in the bent portion, and an insertion piece is provided in a portion that forms the upper surface and the inner periphery of the bent portion. By inserting the insertion piece into the insertion hole, the frame of the lighting device can be formed. The pattern for LED lighting frames according to claim 1 or 2, wherein the pattern can be formed.   The pattern for LED lighting frames according to any one of claims 1 to 4, wherein the pattern has an opening for heat dissipation.   The pattern for an LED lighting frame according to any one of claims 1 to 5, wherein the bent portion is provided with an opening for mounting an LED light source. A flexible flat cable mounted with an LED light source is provided.
The LED lighting frame according to claim 6, wherein the flexible flat cable is bonded to the paper pattern so that a light emitting part of the LED light source is disposed in the opening for mounting the LED light source. Paper pattern.   The LED lighting apparatus using the frame formed by bending the pattern for LED lighting frames of Claim 7.   The LED lighting device according to claim 8, wherein a plurality of the LED light sources are arranged at a predetermined interval.   10. The LED lighting device according to claim 8, wherein the exposed portion on the inner surface side of the LED lighting device is formed of a micro foamed resin except for the opening. An insertion piece is provided at an edge of the bent portion, and the insert piece is inserted and fixed in an insertion hole formed in the bottom surface portion or the bent portion,
11. The LED lighting device according to claim 8, wherein a width and a height of the insertion hole are smaller than a width and a height of the insertion piece.   The LED illumination device according to any one of claims 8 to 11, wherein an angle formed by an inner surface and a bottom surface of the frame portion is 70 ° or more and less than 90 °.   The LED lighting device according to any one of claims 8 to 12, wherein the LED light sources are connected in series or in parallel on the flexible flat cable.   The LED lighting device according to claim 8, wherein a reflection protrusion is provided at the center of the bottom surface portion.   The LED lighting device according to claim 8, wherein a light diffusion plate is provided on a light extraction surface of the frame body. A paper pattern having a bottom part made of a micro-foamed resin sheet, a folding pattern provided on the outer periphery of the bottom part, and a flexible flat cable mounted with an LED light source,
The bent portion is provided with an opening for mounting an LED light source,
An insertion piece is provided at an edge of the bent portion, and an insertion hole is formed in the bottom surface portion or the bent portion,
The flexible flat cable is bonded to the opening for mounting the LED light source so that the light emitting surface of the LED light source is exposed,
Bending the bent portion, inserting the insertion piece into the insertion hole,
A method for assembling an LED lighting device, wherein a frame-like frame portion having a predetermined height and width and having a hollow interior is formed and fixed on the outer periphery of the bottom surface.

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