WO2013129362A1 - Led fluorescent illumination apparatus - Google Patents

Led fluorescent illumination apparatus Download PDF

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Publication number
WO2013129362A1
WO2013129362A1 PCT/JP2013/054869 JP2013054869W WO2013129362A1 WO 2013129362 A1 WO2013129362 A1 WO 2013129362A1 JP 2013054869 W JP2013054869 W JP 2013054869W WO 2013129362 A1 WO2013129362 A1 WO 2013129362A1
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WO
WIPO (PCT)
Prior art keywords
led
light
heat sink
light guide
light source
Prior art date
Application number
PCT/JP2013/054869
Other languages
French (fr)
Japanese (ja)
Inventor
清水　正弘
栄司 能智
浩二 能智
美佳 谷口
一弘 三谷
Original Assignee
エヌズエンタープライズ株式会社
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Filing date
Publication date
Application filed by エヌズエンタープライズ株式会社 filed Critical エヌズエンタープライズ株式会社
Publication of WO2013129362A1 publication Critical patent/WO2013129362A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69—Details of refractors forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention provides a light distribution diffuser having a wide range of light distribution by providing a light guide diffuser made of a translucent material and having a concavo-convex process and a heat sink that is miniaturized to approximately the same size as the light guide diffuser. It is related with the made LED fluorescent lighting apparatus.
  • the LED light source fluorescent lamp has been attracting attention as an illumination device that replaces the conventional fluorescent lamp because it has excellent characteristics such as energy saving, CO 2 reduction, and mercury-free use.
  • the light of the LED is straight, there is no reflection from the lamp or ceiling like a conventional fluorescent lamp, so the portion directly under the LED fluorescent lighting device is illuminated brightly, but there is a portion where the light is not illuminated, There is a problem that it is dazzling because it is not direct light but direct light.
  • Patent Document 1 As a technique for solving this problem, a technique disclosed in Patent Document 1 is known.
  • the technique disclosed in Patent Document 1 is to arrange two LED light source substrates 102 in a LED light source fluorescent lamp so as to be back to back and to provide a power source outside, thereby widening the irradiation angle. (See Patent Document 1)
  • the inside of the tube body 202 is crossed by the inner wall 203 with the first tube body portion 204 made of a translucent synthetic resin or the like and also the LED light emitting illumination room, and the crossing made of metal. It is divided into the second tubular body part 205 which is a circular arc shape in a plan view and which is also the power supply chamber B.
  • an inner wall 203 having a horizontal plane and a pair of inclined surfaces is positioned such that the horizontal plane is closer to the second tubular body portion 205 than the center of the tubular body 202, and is placed on the upper surface of the horizontal plane of the inner wall 203.
  • the LED light emitting device 206 and the phosphor 207 are provided, the power circuit 208 is provided on the lower surface of the horizontal plane, and the light guide diffuser 209 is provided on the inclined surface.
  • an inner wall 203 having a horizontal plane and a pair of inclined surfaces is connected to both ends of the horizontal plane with the end edges of the second metal tube portion 205, and the inner wall 203 and the metal Of the inner wall 203 is equipped with the LED light emitting device 206 and the phosphor 207 on the upper surface of the inner wall 203, the power circuit 208 is installed on the lower surface of the horizontal surface, and is led to the inclined surface. Equipped with the light diffuser 209, the irradiation range can be expanded to the mounting surface side by irregularly reflecting the fluorescent light from the substantially entire surface of the inner wall 203 within the first tubular portion 204, which is the LED light emitting illumination chamber A. .
  • the conventional LED fluorescent lighting device 201 it is necessary to emit light from the LED light source toward the first tube portion 204 and re-reflect the reflected light from the first tube portion 204 by the light guide diffuser 209.
  • the light guide diffuser 209 having a three-layer structure must be bonded to the inclined surface of the inner wall 203 using aluminum foil, which makes the manufacturing process complicated and costly. There was a problem that would be high.
  • first tube portion 204 that is the LED light emitting illumination chamber A and the second tube portion 205 that is the power supply chamber B equipped with the power supply circuit 208 are blocked by the inner wall 203, and there are places that are not irradiated. It existed in a range exceeding 90 degrees.
  • the problem to be solved by the present invention is that the manufacturing process can be simplified and the cost can be reduced, the light distribution angle can be expanded to the fixture side (ceiling surface, wall surface, etc.), and close to natural light and friendly to the eyes.
  • An LED fluorescent lighting device is provided.
  • maintains the board
  • a lighting circuit LED fluorescent lighting comprising: a substrate having a flat plate-like LED light source unit provided on the front surface of the substrate; and a cover made of a light-transmitting material that accommodates the heat sink, the substrate, and the LED light source unit
  • the apparatus comprises a light guide diffuser made of a translucent material having an uneven surface processed on the surface, and the light guide diffuser has the light emitted from the LED light source part inside the light guide diffuser. It is characterized by being irregularly reflected by the unevenness of the surface formed by the unevenness processing and processed into a shape that is optically designed so that the irregularly reflected light is further reflected.
  • the light guide diffuser is made of a translucent material, subjected to an uneven processing treatment, and an uneven surface is added, so that the light is incident from the LED light source unit.
  • the transmitted light passes through the inside of the light guide diffuser and is irregularly reflected by the irregularities on the surface.
  • the light guide diffuser is processed into an optically designed shape so that the irregularly reflected light is further reflected, the light reflection is chained and the light from the LED light source unit can be diffused in multiple directions.
  • the LED fluorescent lighting device according to claim 2 is characterized in that, in claim 1, organic electroluminescence is used for the LED of the LED light source section.
  • organic electroluminescence hereinafter referred to as organic EL
  • the luminous efficiency is high, but heat is generated.
  • the organic EL itself emits light, the voltage can be kept low and the power consumption can be reduced.
  • the LED fluorescent lighting device according to the first or second aspect, wherein the cover is a long fluorescent lamp-like tube, and the heat sink, the substrate, and the LED light source unit are long.
  • the LED light source units are arranged in a line in the longitudinal direction of the tube on the substrate.
  • the cover is a long fluorescent lamp-like tube, the heat sink and the substrate and the LED light source unit are also long, and the LED light source unit is on the substrate. Since they are arranged in a line in the longitudinal direction of the tubular body, a conventional fluorescent lamp can be used as an illumination device that exhibits the effect of claim 1 or claim 2.
  • the LED fluorescent lighting device is the LED light source unit according to claim 3, wherein the concave portion of the light guide diffuser is provided so as to face the front surface of the LED light source unit.
  • the light receiving surface is configured to include a light receiving surface that receives the light emitted from the light source and a pair of inclined surfaces that are provided in a cross-sectional view and have a shape of a letter C in a longitudinal section.
  • the light receiving surface of the light guide diffuser is arranged so as to face the front surface of the LED light source part.
  • the straight light characteristic of the LED can be received efficiently.
  • the light guide diffuser has a substantially crescent shape when viewed in a longitudinal section, so that light that has been irregularly reflected in the light guide diffuser can be received by a crescent-shaped curved surface. It can irradiate a wide range from the entire surface of the crescent-shaped curved surface of the diffuser.
  • the light guide diffuser is provided with a first protrusion extending in the longitudinal direction of the tubular body on each of the inclined surfaces, The first groove portion extending in the longitudinal direction of the tubular body to be engaged with the protrusion is provided, and the first protrusion of the light guide diffuser is inserted into the first groove portion of the heat sink to be engaged, The light guide diffuser and the heat sink are fitted together.
  • the first protrusion is provided on the inclined surface of the light guide diffuser and the first groove is provided on the heat sink.
  • the inclined surface of the light diffuser and the heat sink are fitted to prevent the light guide diffuser from falling in the tube, and the heat of the light guide diffuser can be radiated together with the heat of the substrate and the LED light source unit.
  • the LED fluorescent lighting device wherein the distance between the front surface of the LED light source unit and the light receiving surface of the light guide diffuser is in a range of 0 to 1.0 mm. It is characterized.
  • the distance between the front surface of the LED light source part and the light receiving surface of the light guide diffuser is in the range of 0 to 1.0 mm.
  • the distance between the LED light source unit and the light receiving surface of the light guide diffuser is reduced, so that the luminous flux between the LED light source unit and the light receiving surface of the light guide diffuser can be increased, and the light utilization efficiency is improved.
  • diffusing the light incident on the light receiving surface with the light guide diffuser it is possible to increase the lower light flux while suppressing unevenness in brightness caused by the distance between the LED light source unit and the light guide diffuser being reduced.
  • the LED fluorescent lighting device according to the sixth aspect, wherein the tube body is provided with a long opening along the longitudinal direction, and the heat sink has a thickness of 0.6 to 1.
  • a fin portion provided with four plate-like fins extending in the longitudinal direction of the tube of 3 mm at equal intervals in a width of 7.0 to 9.0 mm, and the maximum depth of the groove between the fin portions is The tube body is in a range of 2.5 to 4.0 mm, and the trajectory obtained by interpolating each tip of the fin portion has an arc shape in cross section, and the fin portion is exposed and becomes a cylindrical shape as a whole. It is characterized by being combined with.
  • the thickness of each fin is 0.6 to 1.3 mm, and the maximum depth of the groove is 2.5 to 4.
  • the surface area can be increased and the heat dissipation can be increased. Therefore, even when the amount of heat is increased using a large LED chip, a sufficient heat dissipation effect can be obtained.
  • the LED fluorescent lighting device according to claim 8 is the LED fluorescent lighting device according to claim 7, wherein the heat sink is parallel to the first groove portion in parallel with the first groove portion toward the outside of the tube body by the opening end side of the opening portion. It is characterized in that it is engaged with a second groove portion that is provided along the length and is held.
  • the heat sink includes the second groove portion that is provided in the longitudinal direction along the tube body in parallel with the first groove portion.
  • the 2nd protrusion part which partitions off a 1st groove part and a 2nd groove part is formed, and when a 1st protrusion part is engaged with a 1st groove part, it opens from the 1st protrusion part of a diffusion light guide. Since the straight light emitted to the end side is shielded by the second protrusion, only the soft diffused light is irradiated to the opening end side, so that luminance unevenness can be reduced.
  • the manufacturing process can be simplified and the cost can be reduced, the light distribution angle can be expanded to the fixture side (ceiling surface, wall surface, etc.), and an LED fluorescent lighting device that is close to natural light and is easy on the eyes is provided. can do.
  • the LED fluorescent lighting device 1 includes a heat sink 6 that dissipates heat generated by the substrate 4, a substrate 4 that is provided so that the back surface is in close contact with the heat sink 6, and supports the LED light source unit 3,
  • the LED light source unit 3 provided so as to be in close contact with the front surface of the substrate 4, the LED light source unit 3, the substrate 4, and the heat sink 6 are held, and the light from the LED light source unit 3 is diffused inside to externally.
  • the tube body 2 is made of a light-transmitting material such as glass or resin, and is long and partially open along the longitudinal direction as shown in FIG. 2, and has an opening edge 10a and an opening edge. 10b, the heat sink 6 is held.
  • the opening end sides 10a and 10b of the tube body 2 may be configured to be engaged with and held by grooves 23a and 23b of the heat sink 6 to be described later.
  • the tube 2 is a conventional fluorescent lamp in which a small amount of mercury vapor is put into a vacuumed tube to cause electricity to flow therethrough, while the light source is an LED. As long as it is hollow, it does not necessarily need to be completely sealed.
  • the LED light source unit 3 is, for example, a 3 mm ⁇ 2.5 mm rectangular chip. Further, the LED light source unit 3 has a structure in which a light emitting diode chip having a wavelength of blue or shorter than that is covered with a phosphor, and emits white light.
  • the LED light source unit 3 may be of a size that can be accommodated on the substrate 4 and is not limited to the above size. Further, the LED light source unit 3 may use an organic EL whose light emitting layer is made of an organic compound.
  • a plurality of LED light source units 3 are arranged on the upper surface of the substrate 4 in a row in the longitudinal direction of the tube at an appropriate interval (or without a gap), and heat generated during light emission is transferred to the heat sink 6 via the substrate 4. Conducted and released from there.
  • the substrate 4 has a circuit for lighting the LED, and a wiring pattern is formed on a main body made of, for example, a glass epoxy resin.
  • substrate 4 is good also as what has heat dissipation, such as aluminum, a ceramic, and glass.
  • the substrate 4 is provided with the LED light source unit 3 mounted on the upper surface, elongated in the longitudinal direction of the tube, and in contact with the heat sink 6 on the back surface. Heat generated in the LED lighting circuit is released through the substrate 4 and the heat sink 6.
  • the end caps 16a and 16b are provided at both ends of the tube body 2, and the same end cap as that of the straight tube fluorescent lamp is used so that the tube can be replaced with the straight tube fluorescent lamp.
  • Each of the end caps 16a and 16b includes support terminal portions 17a and 17b similar to the terminals of the straight tube fluorescent lamp. Therefore, the LED fluorescent lighting device 1 can be mounted as it is on the socket S (not shown) of the lighting fixture corresponding to the straight tube fluorescent lamp.
  • the light guide diffuser 5 is provided in order to diffusely reflect the light emitted from the LED light source unit 3 and expand the irradiation angle. For this reason, the shape in which the irregularly reflected light is further reflected, for example, is elongated in the longitudinal direction of the tube and processed into a substantially crescent shape in a longitudinal section view. In addition, the light guide diffuser 5 should just be a shape in which the irregularly reflected light further reflects, and is not limited to the said shape.
  • the light guide diffuser 5 is provided on each of a planar light receiving surface 9 that receives light emitted from the LED light source unit 3, a pair of inclined surfaces 7a and 7b that hold the heat sink 6, and the inclined surfaces 7a and 7b. Groove portions 8a and 8b engaged with the protrusions 14a and 14b of the heat sink 6, and the curved surface portion 11 which receives light irregularly reflected in the light guide diffuser 5 by a curved surface and causes a more efficient chain of reflection. It is provided as a main part. As shown in FIGS. 1 and 11, the inclined surfaces 7 a and 7 b of the light guide diffuser 5 may be provided with protrusions 21 a and 21 b extending in the tube body longitudinal direction.
  • the light guide diffuser 5 is made of a translucent material and is formed from a single material (acrylic is used in the embodiment) instead of a multilayer structure, so that the manufacturing process can be simplified. Manufacturing costs can be reduced.
  • the light guide diffuser 5 should just be formed from translucent materials, such as glass and resin, and a raw material is not limited.
  • the light guide diffuser 5 is not limited to a lens form, and may be a film form.
  • the light receiving surface 9 is formed in a flat shape and is provided so as to face the front surface of the LED light source unit 3, and the distance from the front surface of the LED light source unit 3 is 3 mm. Further, the thickness of the light guide diffuser between the light receiving surface 9 and the curved surface portion 11 is 2.4 mm.
  • the distance between the light receiving surface 9 and the front surface of the LED light source unit 3 is set to 0.5 mm.
  • the width of the light receiving surface 9 is 120 °, which is the angle of light emitted from the LEDs on the plane, it is determined so that substantially all of the straight light emitted from the LED light source unit 3 can be received. Yes.
  • the groove portions 8 a and 8 b provided on the inclined surfaces 7 a and 7 b are inserted into and engaged with the protrusions 14 a and 14 b provided on the grip portion 12 of the heat sink 6, so that the light guide diffuser 5 is fitted to the heat sink 6.
  • the groove portions 8a and 8b may have a protruding shape, and the protruding portions 14a and 14b may have a groove shape.
  • slide insertion may be sufficient and you may make it fit using elastic force.
  • the thickness of the light guide diffuser between the groove portions 8a and 8b and the curved surface portion 11 provided on the inclined surfaces 7a and 7b of the light guide diffuser 5 is 1 mm. This is an optimum value determined based on the optical design. That is, it is considered that the light irregularly reflected in the light guide diffuser reaches the fixture side (ceiling surface and wall surface) and spreads on the reflector of the lighting fixture.
  • the protrusions 21 a and 21 b of the light guide diffuser 5 are inserted into and engaged with grooves 22 a and 22 b of the heat sink 6 to be described later, whereby the light guide diffuser 5. May be fitted to the heat sink 6.
  • the curved surface portion 11 is shaped into a gently curved surface so that a chain of reflection of light irregularly reflected in the light guide diffuser 5 occurs.
  • the light diffused by irregular reflection in the light guide diffuser 5 is irradiated over a wide area from the entire surface of the curved surface portion 11.
  • the light guide diffuser 5 is blasted on the surface by blowing compressed air mixed with an abrasive by a compressor, and the size of the irregularities formed by the blasting is 1 ⁇ m to 1 mm. And the irregularities formed on the surface by this blasting process, the light received from the LED light source unit 3 can be irregularly reflected, and the light emission direction can be freely changed by an optical design technique.
  • the unevenness on the surface of the light guide diffuser 5 is not limited to blasting, and may be formed by integral molding using a mold or the like.
  • the heat sink 6 is miniaturized to approximately the same size as the light guide diffuser 5.
  • the heat sink 6 accommodates the LED light source unit 3 and the substrate 4 and protrudes inward of the tube body 2. Recesses 13a, 13b located on both sides of the projection, protrusions 14a, 14b for fitting with the light guide diffuser 5, and a plurality of sheets located on the back side of the substrate 4 and arranged in the longitudinal direction of the tube.
  • the fin part 15 is provided as a main part.
  • the heat sink 6 is made of a light material having high thermal conductivity such as aluminum, for example, and the grip portion 12, the recesses 13a and 13b, the protrusions 14a and 14b, and the fin portion 15 are integrally formed in a U-shape in a longitudinal section.
  • the heat sink 6 is integrally formed with a grip portion 12, groove portions 22 a and 22 b, groove portions 23 a and 23 b, and a fin portion 15 as a second embodiment as shown in FIG. It is good also as a structure provided with protrusion part 24a, 24b which partitions off groove part 22a, 22b and groove part 23a, 23b.
  • the protrusions 14a and 14b may have a groove shape, and the groove portions 8a and 8b may have a protrusion shape.
  • the heat sink 6 When the heat sink 6 is combined with the tubular body 2 by making the trajectory drawn by each tip of the fin portion 15 into a circular arc when viewed in cross section, the heat sink 6 has a shape similar to that of a general cylindrical fluorescent lamp as a whole. End caps for fluorescent lamps can be attached.
  • the fin portion 15 is a plate extending in the longitudinal direction of the tubular body, and has four fins equidistantly with a width of 8.4 mm.
  • the fin portion 15 has a thickness of 0.8 mm at the tip of each fin, a thickness of the fin located at the deepest portion of the groove of 1.1 mm, and a maximum depth of the groove between the fin portions 15 of 3. It is 3 mm.
  • the operation of the LED fluorescent lighting device 1 will be described.
  • the power is supplied to the circuit of the substrate 4 and the LED light source unit 3 emits light.
  • the angle of the light emitted from the LED light source unit 3 is 120 °, and the light receiving surface 9 of the light guide diffuser 5 provided so as to face the LED light source unit 3 emits the light emitted from the LED light source unit 3. Receives almost all light.
  • the light received by the light receiving surface 9 of the light guide diffuser 5 is transmitted through the light guide diffuser 5, and the shape of the curved surface portion 11 and the surface of the light guide diffuser 5 are blasted.
  • the light irregularly reflected by the curved surface portion 11 is diffusely reflected by the curved surface portion 11 through the light guide diffuser. Due to this chain of irregular reflections, light diffuses in the light guide diffuser 5 over a wide range.
  • the light diffused in the light guide diffuser 5 over a wide range is irradiated from the curved surface portion 11 of the light guide diffuser 5 toward the tube 2, and the tube 2 is made of a translucent material.
  • the light irradiated in this way passes through the tube 2 as it is, and is uniformly irradiated from the entire circumferential surface of the tube 2 to the external space.
  • the LED fluorescent lighting device 1 is installed so that the tube 2 holds the heat sink 6 and is used so that the heat sink 6 is located on the fixture side. Since the heat sink 6 is downsized to approximately the same size as the light guide diffuser 5, the portion shielded by the heat sink 6 is reduced, so that the irradiation angle of the light irradiated from the tube body 2 is expanded to 340 °. Can do. Thereby, light reaches the fixture side (ceiling surface and wall surface), and the light spreads by the reflector of the lighting fixture. Therefore, the irradiation range can be practically expanded to 360 °, and the user does not feel uncomfortable. Moreover, the shape of the light guide diffuser 5 can be changed to a shape according to the purpose. For example, the light guide diffuser 5 can be changed to have an irradiation angle / direction desired by the user.
  • FIG. 9 is a graph showing an irradiation range based on actual measurement values of the LED fluorescent lighting device 1. As shown in FIG. 9, it can be seen that the light from the LED light source unit 3 is irradiated at an angle of approximately 340 °. As for the remaining angle of 20 ° that has not been irradiated, as described above, light is reflected by the reflection plate of the lighting fixture.
  • Table 1 is a table comparing the illuminance based on the actual measurement values of the LED fluorescent lighting device 1 with other companies.
  • the LED fluorescent lighting device 1 emits light that is close to natural light and gentle to the eyes with high color rendering while suppressing power consumption. Thus, it was proved that the LED fluorescent lighting device 1 has excellent characteristics.
  • the light guide diffusing lens 5 is made of a light-transmitting material, subjected to uneven processing, and has an uneven surface. However, it penetrates the inside of the light guide diffuser 5 and is irregularly reflected by the unevenness of the surface. And since the light guide diffuser 5 is processed into a shape that further reflects the irregularly reflected light, the light reflection is chained and the light from the LED light source unit 3 can be diffused in multiple directions.
  • organic electroluminescence hereinafter referred to as “organic EL”
  • the luminous efficiency is high, but there is little heat generation, and the voltage is increased because the organic EL itself emits light. Low power consumption can be reduced.
  • the fluorescent lamp-like tube body 2 with the shape of a cover long, the LED light source part 3, the board
  • the light receiving surface 9 of the light guide diffuser 5 is disposed so as to face the front surface of the LED light source unit 3, so that the straight light specific to the LED is efficiently received. can do.
  • the light guide diffuser 5 has a substantially crescent shape when viewed in longitudinal section, the light irregularly reflected in the light guide diffuser 5 can be received by a crescent-shaped curved surface, so that a more efficient reflection chain occurs. It is possible to irradiate a wide range from the entire surface of the crescent-shaped curved surface portion 11 of the light guide diffuser 5.
  • the inclined portions 7a and 7b of the light guide diffuser 5 are provided with the groove portions (or protruding portions) 8a and 8b, and the heat sink 6 is provided with the protruding portions (or groove portions) 14a and 14b.
  • the inclined surfaces 7a and 7b of the light guide diffuser 5 and the heat sink 6 are fitted to prevent the light guide diffuser 5 from falling in the tube 2, and the heat of the light guide diffuser 5 is transferred to the LED light source unit 3 and The heat can be dissipated together with the heat of the substrate 4.
  • the distance between the front surface of the LED light source unit 3 and the light receiving surface 9 of the light guide diffuser 5 is in the range of 0 to 1.0 mm, so Since the distance from the light receiving surface 9 of the diffuser 5 is reduced, the luminous flux to the LED light source 3 and the light receiving surface 9 of the light guide diffuser 5 can be increased, and the light utilization efficiency is improved and the light incident surface 9 is incident.
  • the diffused light is diffused by the light guide diffuser 5, so that the lower luminous flux can be enhanced while suppressing unevenness in brightness that occurs when the distance between the LED light source unit 3 and the light guide diffuser 5 approaches.
  • the thickness of each fin is 0.6 to 1.0 mm and the maximum depth of the groove is 2.5 to 4.0 mm, so that the surface area is widened and heat dissipation is improved. Therefore, even when the amount of heat is increased using a large LED chip, a sufficient heat dissipation effect can be obtained.
  • the heat sink 6 includes the groove portions 23a and 23b that are provided in parallel along the longitudinal direction of the tubular body in parallel with the groove portions 22a and 22b, so that the groove portions 22a and 22b and the groove portion 23a are provided. , 23b are formed, and when the protrusions 21a, 21b are engaged with the groove portions 22a, 22b, the opening edges 10a, 10b from the protrusions 21a, 21b of the diffusion light guide 5 are formed. Since the straight light emitted to the side is shielded by the protrusions 24a and 24b, only the soft diffused light is irradiated to the opening end sides 10a and 10b, so that the luminance unevenness can be reduced.

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Abstract

Provided is an LED fluorescent illumination apparatus that radiates light that is close to natural light and easy on the eyes, and wherein the manufacturing process thereof can be made easier and more low-cost, and the light distribution angle of which can be expanded to a mounting appliance side (ceiling surface, wall surface, etc.). The LED fluorescent illumination apparatus (1) is provided with: a heat sink (6) that radiates heat generated by a substrate (4); the substrate (4) comprising a turn-on circuit, and that is held by the heat sink (6); a flat-plate shaped LED light-source unit (3) provided on the front face of the substrate (4); a cover that comprises a translucent material, and that houses the heat sink (6), the substrate (4), and the LED light-source unit (3). The LED fluorescent illumination apparatus (1) is provided with a light guiding diffuser (5) that comprises a translucent material and that has recess/protrusion processing applied to the surface thereof, the light guiding diffuser (5) being processed so as to have a shape wherein light radiated by the LED light-source unit (3) is reflected diffusely inside the light guiding diffuser (5) due to recesses/protrusions formed on the surface thereof by the recess/protrusion processing, and the diffusely reflected light is further reflected.

Description

ＬＥＤ蛍光照明装置LED fluorescent lighting device
　本発明は、透光性材料からなり、凹凸加工が施された導光拡散体と、導光拡散体と略同じサイズに小型化されたヒートシンクとを設けることで広範囲の配光角が得られるようにしたＬＥＤ蛍光照明装置に関する。 The present invention provides a light distribution diffuser having a wide range of light distribution by providing a light guide diffuser made of a translucent material and having a concavo-convex process and a heat sink that is miniaturized to approximately the same size as the light guide diffuser. It is related with the made LED fluorescent lighting apparatus.
　ＬＥＤ光源蛍光灯は、省エネ，ＣＯ２削減，水銀無使用等の優れた特性を持つため、従来の蛍光灯に代わる照明装置として注目されている。しかしながら、ＬＥＤの光は、直進的であるため、従来の蛍光灯のような灯具や天井からの反射がないので、ＬＥＤ蛍光照明装置直下は明るく照らされるが、光が照らされない部分が生じ、また、間接光でなく直接光であるため、眩しいという問題点があった。 The LED light source fluorescent lamp has been attracting attention as an illumination device that replaces the conventional fluorescent lamp because it has excellent characteristics such as energy saving, CO 2 reduction, and mercury-free use. However, since the light of the LED is straight, there is no reflection from the lamp or ceiling like a conventional fluorescent lamp, so the portion directly under the LED fluorescent lighting device is illuminated brightly, but there is a portion where the light is not illuminated, There is a problem that it is dazzling because it is not direct light but direct light.
　この問題点を解決する技術として、特許文献１に開示された技術が知られている。特許文献１に開示された技術は、ＬＥＤ光源蛍光灯内に、２枚のＬＥＤ光源基板１０２を背中合わせになるように配置し、電源を外部に設けることで、照射角度を広げるというものである。（特許文献１を参照。） As a technique for solving this problem, a technique disclosed in Patent Document 1 is known. The technique disclosed in Patent Document 1 is to arrange two LED light source substrates 102 in a LED light source fluorescent lamp so as to be back to back and to provide a power source outside, thereby widening the irradiation angle. (See Patent Document 1)
　この従来のＬＥＤ蛍光照明装置１０１では、ＬＥＤ光源基板１０２が２枚必要であり、それに応じた光源数が必要となることから、消費電力に欠点があり、また、背中合わせになるよう配置された２枚のＬＥＤ光源基板１０２からの光は、それぞれが、前方のみを照射するため、照射されない箇所が黒い線となって現れ、ユーザに違和感を与えるという問題があった。 In this conventional LED fluorescent lighting device 101, two LED light source substrates 102 are required, and the number of light sources corresponding to the two LED light source substrates 102 is required. Therefore, there is a drawback in power consumption, and the two LED light source substrates 102 are arranged back to back. Since each of the light from the LED light source substrates 102 irradiates only the front side, the portions that are not irradiated appear as black lines, which gives the user a feeling of strangeness.
　このため、少ない光源数で、照射範囲を広げることが可能なＬＥＤ蛍光照明装置が種々提案されている。例えば、特許文献２のＬＥＤ蛍光照明装置２０１は、管体２０２の内部を、内壁２０３により、透光性合成樹脂等からなりＬＥＤ発光照明室でもある第１管体部２０４と、金属からなる横断面視円弧形状で電源室Ｂでもある第２管体部２０５とに二分されている。前記管体２０２の内部に、水平面と一対の傾斜面とを有する内壁２０３を、前記水平面を前記管体２０２の中心より第２管体部２０５側に位置させ、前記内壁２０３の水平面の上面にＬＥＤ発光装置２０６および蛍光体２０７を装備し、水平面の下面に電源回路２０８を装備し、傾斜面に導光拡散体２０９を装備している。 For this reason, various LED fluorescent lighting devices capable of expanding the irradiation range with a small number of light sources have been proposed. For example, in the LED fluorescent lighting device 201 of Patent Document 2, the inside of the tube body 202 is crossed by the inner wall 203 with the first tube body portion 204 made of a translucent synthetic resin or the like and also the LED light emitting illumination room, and the crossing made of metal. It is divided into the second tubular body part 205 which is a circular arc shape in a plan view and which is also the power supply chamber B. Inside the tubular body 202, an inner wall 203 having a horizontal plane and a pair of inclined surfaces is positioned such that the horizontal plane is closer to the second tubular body portion 205 than the center of the tubular body 202, and is placed on the upper surface of the horizontal plane of the inner wall 203. The LED light emitting device 206 and the phosphor 207 are provided, the power circuit 208 is provided on the lower surface of the horizontal plane, and the light guide diffuser 209 is provided on the inclined surface.
　このＬＥＤ蛍光照明装置２０１によれば、水平面と一対の傾斜面とを有する内壁２０３を、前記水平面の両端を金属製の第２管体部２０５の端縁に連接して、内壁２０３と金属製の第２管体部２０５とを熱伝導的に連続させ、内壁２０３の水平面の上面にＬＥＤ発光装置２０６及び蛍光体２０７を装備し、水平面の下面に電源回路２０８を装備し、傾斜面に導光拡散体２０９を装備して、内壁２０３の略全面より蛍光光線をＬＥＤ発光照明室Ａである第１管体部２０４内で乱反射させることにより照射範囲を取付面側へも拡大することができる。 According to this LED fluorescent lighting device 201, an inner wall 203 having a horizontal plane and a pair of inclined surfaces is connected to both ends of the horizontal plane with the end edges of the second metal tube portion 205, and the inner wall 203 and the metal Of the inner wall 203 is equipped with the LED light emitting device 206 and the phosphor 207 on the upper surface of the inner wall 203, the power circuit 208 is installed on the lower surface of the horizontal surface, and is led to the inclined surface. Equipped with the light diffuser 209, the irradiation range can be expanded to the mounting surface side by irregularly reflecting the fluorescent light from the substantially entire surface of the inner wall 203 within the first tubular portion 204, which is the LED light emitting illumination chamber A. .
特開２０１０－２６２９０９号公報JP 2010-262909 A 特開２０１０－２７２４９６号公報JP 2010-272496 A
　しかしながら、従来のＬＥＤ蛍光照明装置２０１では、ＬＥＤ光源からの光を、第１管体部２０４に向け発射し、第１管体部２０４よりの反射光線を導光拡散体２０９で再反射させる必要があり、前記反射光線を再反射させるためには、三層構造からなる導光拡散体２０９を、内壁２０３の傾斜面にアルミ箔を用いて接着させなければならず、製造過程が複雑でコスト高となる問題があった。 However, in the conventional LED fluorescent lighting device 201, it is necessary to emit light from the LED light source toward the first tube portion 204 and re-reflect the reflected light from the first tube portion 204 by the light guide diffuser 209. In order to re-reflect the reflected light, the light guide diffuser 209 having a three-layer structure must be bonded to the inclined surface of the inner wall 203 using aluminum foil, which makes the manufacturing process complicated and costly. There was a problem that would be high.
　また、ＬＥＤ発光照明室Ａである第１管体部２０４と、電源回路２０８を装備した電源室Ｂとなっている第２管体部２０５とが内壁２０３によって遮られており、照射されない箇所が９０度を超す範囲で存在していた。 In addition, the first tube portion 204 that is the LED light emitting illumination chamber A and the second tube portion 205 that is the power supply chamber B equipped with the power supply circuit 208 are blocked by the inner wall 203, and there are places that are not irradiated. It existed in a range exceeding 90 degrees.
　そこで、本発明が解決しようとする課題は、製造工程の簡素化・低コスト化が可能で、配光角を取付器具側（天井面，壁面等）へ拡大できるとともに、自然光に近く目に優しいＬＥＤ蛍光照明装置を提供することである。 Therefore, the problem to be solved by the present invention is that the manufacturing process can be simplified and the cost can be reduced, the light distribution angle can be expanded to the fixture side (ceiling surface, wall surface, etc.), and close to natural light and friendly to the eyes. An LED fluorescent lighting device is provided.
　この発明は、前記課題を解決するためになされたもので、請求項１に記載のＬＥＤ蛍光照明装置は、点灯回路を有する基板を把持し、基板で発生する熱を放熱するヒートシンクと、点灯回路を有する基板と、該基板のおもて面に設けられた平板状のＬＥＤ光源部と、該ヒートシンク及び該基板並びに該ＬＥＤ光源部を収容する透光性材料からなるカバーとを備えるＬＥＤ蛍光照明装置において、表面に凹凸加工処理が施された透光性材料からなる導光拡散体を備え、前記導光拡散体は、前記ＬＥＤ光源部から照射された光が、導光拡散体内部において、凹凸加工処理により形成された表面の凹凸により乱反射し、乱反射した光が更に反射するよう光学設計された形状に加工されていることを特徴としている。 This invention was made in order to solve the said subject, The LED fluorescent lighting apparatus of Claim 1 hold | maintains the board | substrate which has a lighting circuit, The heat sink which thermally radiates the heat | fever which generate | occur | produces in a board | substrate, A lighting circuit LED fluorescent lighting comprising: a substrate having a flat plate-like LED light source unit provided on the front surface of the substrate; and a cover made of a light-transmitting material that accommodates the heat sink, the substrate, and the LED light source unit The apparatus comprises a light guide diffuser made of a translucent material having an uneven surface processed on the surface, and the light guide diffuser has the light emitted from the LED light source part inside the light guide diffuser. It is characterized by being irregularly reflected by the unevenness of the surface formed by the unevenness processing and processed into a shape that is optically designed so that the irregularly reflected light is further reflected.
　請求項１に記載のＬＥＤ蛍光照明装置によれば、導光拡散体は、透光性材料からなり、凹凸加工処理が施され、表面に凹凸が加えられたことで、ＬＥＤ光源部から入射された光が、導光拡散体の内部を透過し、表面の凹凸により乱反射する。そして、導光拡散体は乱反射した光が更に反射するよう光学設計された形状に加工されているので、光の反射が連鎖しＬＥＤ光源部からの光を多方向に拡散させることができる。 According to the LED fluorescent illumination device according to claim 1, the light guide diffuser is made of a translucent material, subjected to an uneven processing treatment, and an uneven surface is added, so that the light is incident from the LED light source unit. The transmitted light passes through the inside of the light guide diffuser and is irregularly reflected by the irregularities on the surface. And since the light guide diffuser is processed into an optically designed shape so that the irregularly reflected light is further reflected, the light reflection is chained and the light from the LED light source unit can be diffused in multiple directions.
　請求項２に記載のＬＥＤ蛍光照明装置は、請求項１において、前記ＬＥＤ光源部のＬＥＤに有機エレクトロルミネッセンスを用いることを特徴としている。 The LED fluorescent lighting device according to claim 2 is characterized in that, in claim 1, organic electroluminescence is used for the LED of the LED light source section.
　請求項２に記載のＬＥＤ蛍光照明装置によれば、請求項１の効果に加えて、ＬＥＤ光源部に有機エレクトロルミネッセンス（以下、有機ＥＬという。）を用いることで、発光効率は高いが、発熱が少なく、また、有機ＥＬ自体が発光するため電圧が低く抑えられ、消費電力を削減することができる。 According to the LED fluorescent lighting device according to claim 2, in addition to the effect of claim 1, by using organic electroluminescence (hereinafter referred to as organic EL) for the LED light source part, the luminous efficiency is high, but heat is generated. In addition, since the organic EL itself emits light, the voltage can be kept low and the power consumption can be reduced.
　請求項３に記載のＬＥＤ蛍光照明装置は、請求項１又は請求項２において、前記カバーは長尺の蛍光灯状の管体であり、前記ヒートシンク及び前記基板並びに前記ＬＥＤ光源部は長尺で、前記ＬＥＤ光源部は、前記基板上に管体長手方向に一列に配置されていること特徴としている。 According to a third aspect of the present invention, there is provided the LED fluorescent lighting device according to the first or second aspect, wherein the cover is a long fluorescent lamp-like tube, and the heat sink, the substrate, and the LED light source unit are long. The LED light source units are arranged in a line in the longitudinal direction of the tube on the substrate.
　請求項３に記載のＬＥＤ蛍光照明装置によれば、カバーの形状が長尺な蛍光灯状の管体であり、ヒートシンク及び基板並びにＬＥＤ光源部も長尺であり、ＬＥＤ光源部は基板上に管体長手方向に一列に配置されているため、請求項１又は請求項２の効果を奏する照明装置として、従来の蛍光灯に代替させることができる。 According to the LED fluorescent lighting device of claim 3, the cover is a long fluorescent lamp-like tube, the heat sink and the substrate and the LED light source unit are also long, and the LED light source unit is on the substrate. Since they are arranged in a line in the longitudinal direction of the tubular body, a conventional fluorescent lamp can be used as an illumination device that exhibits the effect of claim 1 or claim 2.
　請求項４に記載のＬＥＤ蛍光照明装置は、請求項３おいて、前記導光拡散体の凹部は、前記ＬＥＤ光源部のおもて面と向かい合わせになるように設けられ、該ＬＥＤ光源部から照射される光を受容する受光面と、縦断面視ハの字となるように設けられ、前記ヒートシンクを把持する一対の傾斜面とで構成されることを特徴としている。 The LED fluorescent lighting device according to claim 4 is the LED light source unit according to claim 3, wherein the concave portion of the light guide diffuser is provided so as to face the front surface of the LED light source unit. The light receiving surface is configured to include a light receiving surface that receives the light emitted from the light source and a pair of inclined surfaces that are provided in a cross-sectional view and have a shape of a letter C in a longitudinal section.
　請求項４に記載のＬＥＤ蛍光照明装置によれば、請求項３の効果に加えて、導光拡散体の受光面が、ＬＥＤ光源部のおもて面と向かい合うように配されているので、ＬＥＤ特有の直進的な光を効率的に受光することができる。また、導光拡散体の形状を縦断面視略三日月型としたことにより、導光拡散体内で乱反射した光を三日月型の曲面で受光できるので、より効率的な反射の連鎖が起き、導光拡散体の三日月型曲面部の全面から広範囲に照射できる。 According to the LED fluorescent lighting device of claim 4, in addition to the effect of claim 3, the light receiving surface of the light guide diffuser is arranged so as to face the front surface of the LED light source part. The straight light characteristic of the LED can be received efficiently. In addition, the light guide diffuser has a substantially crescent shape when viewed in a longitudinal section, so that light that has been irregularly reflected in the light guide diffuser can be received by a crescent-shaped curved surface. It can irradiate a wide range from the entire surface of the crescent-shaped curved surface of the diffuser.
　請求項５に記載のＬＥＤ蛍光照明装置は、請求項４において、前記導光拡散体は、前記傾斜面のそれぞれに、管体長手方向に延びる第１突部が設けられており、前記ヒートシンクは、前記突部と係合する管体長手方向に延びる第１溝部が設けられており、前記導光拡散体の第１突部が前記ヒートシンクの第１溝部に挿入されて係合することにより、該導光拡散体と該ヒートシンクとが嵌合することを特徴としている。 According to a fifth aspect of the present invention, in the LED fluorescent lighting device according to the fourth aspect, the light guide diffuser is provided with a first protrusion extending in the longitudinal direction of the tubular body on each of the inclined surfaces, The first groove portion extending in the longitudinal direction of the tubular body to be engaged with the protrusion is provided, and the first protrusion of the light guide diffuser is inserted into the first groove portion of the heat sink to be engaged, The light guide diffuser and the heat sink are fitted together.
　請求項５に記載のＬＥＤ蛍光照明装置によれば、請求項４の効果に加えて、導光拡散体の傾斜面に第１突部を設け、ヒートシンンクに第１溝部を設けたことにより、導光拡散体の傾斜面とヒートシンンクとを嵌合させて管体内において導光拡散体の落下を防止するとともに、導光拡散体の熱を基板及びＬＥＤ光源部の熱とともに放熱することができる。 According to the LED fluorescent lighting device of the fifth aspect, in addition to the effect of the fourth aspect, the first protrusion is provided on the inclined surface of the light guide diffuser and the first groove is provided on the heat sink. The inclined surface of the light diffuser and the heat sink are fitted to prevent the light guide diffuser from falling in the tube, and the heat of the light guide diffuser can be radiated together with the heat of the substrate and the LED light source unit.
　請求項６に記載のＬＥＤ蛍光照明装置は、請求項５において、前記ＬＥＤ光源部のおもて面と前記導光拡散体の受光面との距離が、０～１．０ｍｍの範囲にあることを特徴している。 The LED fluorescent lighting device according to claim 6, wherein the distance between the front surface of the LED light source unit and the light receiving surface of the light guide diffuser is in a range of 0 to 1.0 mm. It is characterized.
　請求項６に記載のＬＥＤ蛍光照明装置によれば、請求項５の効果に加えて、ＬＥＤ光源部のおもて面と導光拡散体の受光面との距離を０～１．０ｍｍの範囲としたことにより、ＬＥＤ光源部と導光拡散体の受光面との距離が近くなるためＬＥＤ光源部と導光拡散体の受光面までの光束を高めることができ、光利用効率が向上すると共に、受光面に入射した光を導光拡散体により拡散させることによって、ＬＥＤ光源部と導光拡散体との距離が近づくことによって生じる輝度ムラを抑えながらも下方光束を高めることができる。 According to the LED fluorescent lighting device of claim 6, in addition to the effect of claim 5, the distance between the front surface of the LED light source part and the light receiving surface of the light guide diffuser is in the range of 0 to 1.0 mm. As a result, the distance between the LED light source unit and the light receiving surface of the light guide diffuser is reduced, so that the luminous flux between the LED light source unit and the light receiving surface of the light guide diffuser can be increased, and the light utilization efficiency is improved. By diffusing the light incident on the light receiving surface with the light guide diffuser, it is possible to increase the lower light flux while suppressing unevenness in brightness caused by the distance between the LED light source unit and the light guide diffuser being reduced.
　請求項７に記載のＬＥＤ蛍光照明装置は、請求項６において、前記管体は、長手方向に沿って長尺な開口部が設けられており、前記ヒートシンクは、厚さが０．６～１．３ｍｍの管体長手方向に延びる板状のフィンを７．０～９．０ｍｍの幅に等間隔に４枚備えたフィン部を有し、前記フィン部の間の溝の深さの最大が２．５～４．０ｍｍの範囲にあり、前記フィン部の各先端を内挿補間した軌跡が断面視円弧状であり、前記フィン部が表出して全体として円筒形になるように前記管体と組み合わされることを特徴としている。 According to a seventh aspect of the present invention, there is provided the LED fluorescent lighting device according to the sixth aspect, wherein the tube body is provided with a long opening along the longitudinal direction, and the heat sink has a thickness of 0.6 to 1. A fin portion provided with four plate-like fins extending in the longitudinal direction of the tube of 3 mm at equal intervals in a width of 7.0 to 9.0 mm, and the maximum depth of the groove between the fin portions is The tube body is in a range of 2.5 to 4.0 mm, and the trajectory obtained by interpolating each tip of the fin portion has an arc shape in cross section, and the fin portion is exposed and becomes a cylindrical shape as a whole. It is characterized by being combined with.
　請求項７に記載のＬＥＤ蛍光照明装置によれば、請求項６の効果に加えて、各フィンの厚さを０．６～１．３ｍｍ、溝の深さの最大を２．５～４．０ｍｍとしたことにより、表面積が広くなり放熱性を高めることができるため、サイズの大きなＬＥＤチップを用い熱量が増加した場合でも、十分な放熱効果が得られる。 According to the LED fluorescent lighting device of the seventh aspect, in addition to the effect of the sixth aspect, the thickness of each fin is 0.6 to 1.3 mm, and the maximum depth of the groove is 2.5 to 4. By setting the thickness to 0 mm, the surface area can be increased and the heat dissipation can be increased. Therefore, even when the amount of heat is increased using a large LED chip, a sufficient heat dissipation effect can be obtained.
　請求項８に記載のＬＥＤ蛍光照明装置は、請求項７において、前記ヒートシンクは、前記開口部の開口端辺によって、前記管体の外側に向かって前記第１溝部に並列して管体長手方向に沿って長尺に設けられた第２溝部と咬合されて、挾持されることを特徴としている。 The LED fluorescent lighting device according to claim 8 is the LED fluorescent lighting device according to claim 7, wherein the heat sink is parallel to the first groove portion in parallel with the first groove portion toward the outside of the tube body by the opening end side of the opening portion. It is characterized in that it is engaged with a second groove portion that is provided along the length and is held.
　請求項８に記載のＬＥＤ蛍光照明装置によれば、請求項７の効果に加えて、ヒートシンクは、第１溝部に並列して管体長手方向に沿って長尺に設けられた第２溝部を備えたことにより、第１溝部と第２溝部とを間仕切る第２突部が形成され、第１溝部に第１突部を係合させた際、拡散導光体の第１突部から開口端辺側に出射される直進的な光が、第２突部によって遮蔽されることで柔らかな拡散光だけが開口端辺側に照射されるので、輝度ムラを減らすことができる。 According to the LED fluorescent lighting device of the eighth aspect, in addition to the effect of the seventh aspect, the heat sink includes the second groove portion that is provided in the longitudinal direction along the tube body in parallel with the first groove portion. By providing, the 2nd protrusion part which partitions off a 1st groove part and a 2nd groove part is formed, and when a 1st protrusion part is engaged with a 1st groove part, it opens from the 1st protrusion part of a diffusion light guide. Since the straight light emitted to the end side is shielded by the second protrusion, only the soft diffused light is irradiated to the opening end side, so that luminance unevenness can be reduced.
　この発明によれば、製造工程の簡素化・低コスト化が可能で、配光角を取付器具側（天井面，壁面等）へ拡大できるとともに、自然光に近く目に優しいＬＥＤ蛍光照明装置を提供することができる。 According to the present invention, the manufacturing process can be simplified and the cost can be reduced, the light distribution angle can be expanded to the fixture side (ceiling surface, wall surface, etc.), and an LED fluorescent lighting device that is close to natural light and is easy on the eyes is provided. can do.
本発明の一実施形態に係るＬＥＤ蛍光照明装置の縦断面図である。It is a longitudinal cross-sectional view of the LED fluorescent lighting apparatus which concerns on one Embodiment of this invention. 本発明の一実施形態であって、ＬＥＤ蛍光照明装置のエンドキャップを外した状態を示す斜視図である。It is one Embodiment of this invention, Comprising: It is a perspective view which shows the state which removed the end cap of the LED fluorescent lighting apparatus. 導光拡散体の縦断面図である。It is a longitudinal cross-sectional view of a light guide diffuser. ヒートシンクの縦断面図である。It is a longitudinal cross-sectional view of a heat sink. 本発明の一実施形態に係るＬＥＤ蛍光照明装置の正面図である。It is a front view of the LED fluorescent lighting apparatus which concerns on one Embodiment of this invention. ＬＥＤ光源部から受光面への照射角度を示す縦断面図である。It is a longitudinal cross-sectional view which shows the irradiation angle from a LED light source part to a light-receiving surface. ＬＥＤ光源部からの光の拡散の説明に供する図である。It is a figure where it uses for description of the spreading | diffusion of the light from a LED light source part. 本発明の一実施形態に係る導光拡散体の厚み及びＬＥＤ光源部との距離についての説明に供する図である。It is a figure where it uses for description about the thickness of the light guide diffuser which concerns on one Embodiment of this invention, and the distance with an LED light source part. 本発明の一実施形態に係るＬＥＤ蛍光照明装置の配光角の特性を示すグラフである。It is a graph which shows the characteristic of the light distribution angle of the LED fluorescent lighting apparatus which concerns on one Embodiment of this invention. 従来のＬＥＤ蛍光照明装置の一実施形態を示す図である。It is a figure which shows one Embodiment of the conventional LED fluorescent lighting apparatus. 従来のＬＥＤ蛍光照明装置の他の実施形態を示す図である。It is a figure which shows other embodiment of the conventional LED fluorescent lighting apparatus. 本発明の他の実施形態に係るＬＥＤ蛍光照明装置の縦断面図である。It is a longitudinal cross-sectional view of the LED fluorescent lighting apparatus which concerns on other embodiment of this invention. 本発明の他の実施形態に係るＬＥＤ蛍光照明装置のヒートシンクの縦断面図である。It is a longitudinal cross-sectional view of the heat sink of the LED fluorescent lighting apparatus which concerns on other embodiment of this invention.
　以下、本発明を適用した具体的な実施の形態について、図面を参照しながら詳細に説明する。本発明は、例えば、図１，図２及び図１１に示すような構成のＬＥＤ蛍光照明装置１に適用される。 Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. The present invention is applied to, for example, an LED fluorescent lighting device 1 having a configuration as shown in FIGS.
　先ず、図１，図２及び図５を参照して、ＬＥＤ蛍光照明装置１の構成の概略について説明する。このＬＥＤ蛍光照明装置１は、図１に示すように、基板４で発生する熱を放熱させるヒートシンク６と、裏面がヒートシンク６と密着するよう設けられ、ＬＥＤ光源部３を支持する基板４と、基板４のおもて面と密着するように設けられているＬＥＤ光源部３と、ＬＥＤ光源部３及び基板４並びにヒートシンンク６を把持し、ＬＥＤ光源部３からの光を内部で拡散させて外部に向けて照射する導光拡散体５と、ヒートシンク６を挾持するように設けられ、ＬＥＤ光源部３と基板４とする導光拡散体５とヒートシンク６とを収容する管体２と、管体２の両端に設けられた一対のエンドキャップ１６ａ，１６ｂと、エンドキャップ１６ａ，１６ｂに備えられた支持端子部１７ａ，１７ｂを主要部として備えている。 First, an outline of the configuration of the LED fluorescent lighting device 1 will be described with reference to FIGS. As shown in FIG. 1, the LED fluorescent lighting device 1 includes a heat sink 6 that dissipates heat generated by the substrate 4, a substrate 4 that is provided so that the back surface is in close contact with the heat sink 6, and supports the LED light source unit 3, The LED light source unit 3 provided so as to be in close contact with the front surface of the substrate 4, the LED light source unit 3, the substrate 4, and the heat sink 6 are held, and the light from the LED light source unit 3 is diffused inside to externally. A light guide diffuser 5 that irradiates the light source, a heat sink 6, and a tube body 2 that houses the light guide diffuser 5 and the heat sink 6 as the LED light source unit 3 and the substrate 4; 2 includes a pair of end caps 16a and 16b provided at both ends, and support terminal portions 17a and 17b provided in the end caps 16a and 16b as main parts.
　管体２は、ガラス又は樹脂等の透光性材料からなり、図２に示すように、長尺で、長手方向に沿って一部が開口となっており、開口端辺１０ａと開口端辺１０ｂとによって、ヒートシンク６が挾持された構成になっている。なお、実施例２として、図１１に示すように、管体２の開口端辺１０ａ，１０ｂは、後述するヒートシンク６の溝部２３ａ，２３ｂと咬合されて挾持される構成としてもよい。 The tube body 2 is made of a light-transmitting material such as glass or resin, and is long and partially open along the longitudinal direction as shown in FIG. 2, and has an opening edge 10a and an opening edge. 10b, the heat sink 6 is held. In addition, as Example 2, as shown in FIG. 11, the opening end sides 10a and 10b of the tube body 2 may be configured to be engaged with and held by grooves 23a and 23b of the heat sink 6 to be described later.
　管体２は、従来の蛍光灯では、真空状態にした管の中に微量の水銀の蒸気を入れることで、そこに電気を流して発光させていたのに対し、光源をＬＥＤとしたことで、中空であればよく、必ずしも完全密閉されることを必要としない。 The tube 2 is a conventional fluorescent lamp in which a small amount of mercury vapor is put into a vacuumed tube to cause electricity to flow therethrough, while the light source is an LED. As long as it is hollow, it does not necessarily need to be completely sealed.
　ＬＥＤ光源部３は、例えば３ｍｍ×２．５ｍｍの矩形状のチップである。また、ＬＥＤ光源部３は、例えば青又はそれよりも波長の短い発光ダイオードのチップを蛍光体で覆った構造をしており、白色に発光する。なお、ＬＥＤ光源部３は、基板４上に収まる大きさであればよく、上記大きさに限定されない。また、ＬＥＤ光源部３は、発光層が有機化合物からなる有機ＥＬを用いてもよい。 The LED light source unit 3 is, for example, a 3 mm × 2.5 mm rectangular chip. Further, the LED light source unit 3 has a structure in which a light emitting diode chip having a wavelength of blue or shorter than that is covered with a phosphor, and emits white light. The LED light source unit 3 may be of a size that can be accommodated on the substrate 4 and is not limited to the above size. Further, the LED light source unit 3 may use an organic EL whose light emitting layer is made of an organic compound.
　ＬＥＤ光源部３は、基板４の上面に、複数個、適宜の間隔で（又は隙間なく）管体長手方向に一列に配置され、発光の際に生じる熱は、基板４を介してヒートシンク６に伝導し、そこから放出されるようになっている。 A plurality of LED light source units 3 are arranged on the upper surface of the substrate 4 in a row in the longitudinal direction of the tube at an appropriate interval (or without a gap), and heat generated during light emission is transferred to the heat sink 6 via the substrate 4. Conducted and released from there.
　基板４は、ＬＥＤを点灯させるための回路を有し、例えば、ガラスエポキシ樹脂からなる本体に配線パターンが形成されている。なお、基板４の本体は、アルミニウム，セラミック及びガラス等の放熱性を有するものとしてもよい。 The substrate 4 has a circuit for lighting the LED, and a wiring pattern is formed on a main body made of, for example, a glass epoxy resin. In addition, the main body of the board | substrate 4 is good also as what has heat dissipation, such as aluminum, a ceramic, and glass.
　基板４は、上面にＬＥＤ光源部３を実装し、管体長手方向に長尺に、裏面がヒートシンク６と密着するよう設けられている。ＬＥＤ点灯回路で発生する熱は、基板４及びヒートシンク６を介して放出される。 The substrate 4 is provided with the LED light source unit 3 mounted on the upper surface, elongated in the longitudinal direction of the tube, and in contact with the heat sink 6 on the back surface. Heat generated in the LED lighting circuit is released through the substrate 4 and the heat sink 6.
　エンドキャップ１６ａ，１６ｂは、管体２の両端に設けられ、直管型蛍光灯と差し替えが可能なように、直管型蛍光灯と同じエンドキャップを用いている。また、エンドキャップ１６ａ，１６ｂのそれぞれには、直管型蛍光灯の端子と同様の支持端子部１７ａ，１７ｂを備えている。したがって、ＬＥＤ蛍光照明装置１は、直管型蛍光灯に対応した照明器具のソケットＳ（図示せず）に、そのまま装着することができる。 The end caps 16a and 16b are provided at both ends of the tube body 2, and the same end cap as that of the straight tube fluorescent lamp is used so that the tube can be replaced with the straight tube fluorescent lamp. Each of the end caps 16a and 16b includes support terminal portions 17a and 17b similar to the terminals of the straight tube fluorescent lamp. Therefore, the LED fluorescent lighting device 1 can be mounted as it is on the socket S (not shown) of the lighting fixture corresponding to the straight tube fluorescent lamp.
　次に、図１，図３，図６，図７，図８及び図１１を参照して、導光拡散体５の構成を詳細に説明する。この導光拡散体５は、ＬＥＤ光源部３から照射される光を乱反射させ、照射角度を拡大させるために設けられている。このため、乱反射した光が更に反射するような形状、例えば、管体長手方向に長尺で、縦断面視略三日月形に加工されている。なお、導光拡散体５は、乱反射した光が更に反射するような形状であればよく、前記形状に限定されない。 Next, the configuration of the light guide diffuser 5 will be described in detail with reference to FIGS. 1, 3, 6, 7, 8, and 11. The light guide diffuser 5 is provided in order to diffusely reflect the light emitted from the LED light source unit 3 and expand the irradiation angle. For this reason, the shape in which the irregularly reflected light is further reflected, for example, is elongated in the longitudinal direction of the tube and processed into a substantially crescent shape in a longitudinal section view. In addition, the light guide diffuser 5 should just be a shape in which the irregularly reflected light further reflects, and is not limited to the said shape.
　導光拡散体５は、ＬＥＤ光源部３から照射される光を受容する平面状の受光面９と、ヒートシンク６を把持する一対の傾斜面７ａ，７ｂと、傾斜面７ａ，７ｂのそれぞれに設けられ、ヒートシンク６の突部１４ａ，１４ｂと係合する溝部８ａ，８ｂと、導光拡散体５内で乱反射した光を曲面で受光し、より効率的な反射の連鎖を起こす曲面部１１とを主要部として備えている。図１及び図１１に示すように、導光拡散体５の傾斜面７ａ，７ｂのそれぞれには、管体長手方向に延びる突部２１ａ，２１ｂを設けた構成としてもよい。 The light guide diffuser 5 is provided on each of a planar light receiving surface 9 that receives light emitted from the LED light source unit 3, a pair of inclined surfaces 7a and 7b that hold the heat sink 6, and the inclined surfaces 7a and 7b. Groove portions 8a and 8b engaged with the protrusions 14a and 14b of the heat sink 6, and the curved surface portion 11 which receives light irregularly reflected in the light guide diffuser 5 by a curved surface and causes a more efficient chain of reflection. It is provided as a main part. As shown in FIGS. 1 and 11, the inclined surfaces 7 a and 7 b of the light guide diffuser 5 may be provided with protrusions 21 a and 21 b extending in the tube body longitudinal direction.
　導光拡散体５は、透光性材料からなり、多層構造ではなく単一の素材（実施例においてはアクリルを使用している）から形成されているので、製造工程を簡略化することができ、製造コストを抑えることができる。なお、導光拡散体５は、ガラスや樹脂等の透光性材料から形成されていればよく、素材は限定されない。また、導光拡散体５は、レンズの形態に限定されず、フィルムの形態としてもよい。 The light guide diffuser 5 is made of a translucent material and is formed from a single material (acrylic is used in the embodiment) instead of a multilayer structure, so that the manufacturing process can be simplified. Manufacturing costs can be reduced. In addition, the light guide diffuser 5 should just be formed from translucent materials, such as glass and resin, and a raw material is not limited. Moreover, the light guide diffuser 5 is not limited to a lens form, and may be a film form.
　受光面９は、平面状に形成されており、ＬＥＤ光源部３のおもて面と向かい合わせになるように設けられ、ＬＥＤ光源部３のおもて面との距離を３ｍｍとしている。また、受光面９及び曲面部１１間の導光拡散体の厚さを２．４ｍｍとしている。 The light receiving surface 9 is formed in a flat shape and is provided so as to face the front surface of the LED light source unit 3, and the distance from the front surface of the LED light source unit 3 is 3 mm. Further, the thickness of the light guide diffuser between the light receiving surface 9 and the curved surface portion 11 is 2.4 mm.
　これは、光学設計に基づいて最適な値を定めたものである。すなわち、ＬＥＤ光源部３のおもて面に、受光面９及び曲面部１１を近づけるほど、曲面部１１の曲率が小さくなり形状が平面に近くなるので反射の連鎖が起こりにくくなる一方、ＬＥＤ光源部３のおもて面から、受光面９及び曲面部１１を遠ざけるほど、曲面部１１の曲率が大きくなり光が軌道方向に集中してしまうので照度にバラツキが生じることを考慮したものである。なお、実施例２においては、図１１に示すように、受光面９とＬＥＤ光源部３のおもて面との距離を０．５ｍｍとしている。 This is an optimum value determined based on the optical design. That is, the closer the light receiving surface 9 and the curved surface portion 11 to the front surface of the LED light source portion 3, the smaller the curvature of the curved surface portion 11 and the closer the shape is to a flat surface. This is because the curvature of the curved surface portion 11 increases and the light concentrates in the orbital direction as the distance between the light receiving surface 9 and the curved surface portion 11 increases from the front surface of the portion 3, so that the illuminance varies. . In Example 2, as shown in FIG. 11, the distance between the light receiving surface 9 and the front surface of the LED light source unit 3 is set to 0.5 mm.
　受光面９の幅は、平面上のＬＥＤから照射される光の角度である１２０°であることから、ＬＥＤ光源部３から照射される直進的な光の略全てを受光できるように定められている。 Since the width of the light receiving surface 9 is 120 °, which is the angle of light emitted from the LEDs on the plane, it is determined so that substantially all of the straight light emitted from the LED light source unit 3 can be received. Yes.
　傾斜面７ａ，７ｂに設けられた溝部８ａ，８ｂは、ヒートシンク６の把持部１２に設けられた突部１４ａ，１４ｂに挿入されて係合することにより、導光拡散体５がヒートシンク６に嵌合される。なお、この溝部８ａ，８ｂを突形状とし、突部１４ａ，１４ｂを溝形状としてもよい。また、傾斜面７ａ，７ｂとヒートシンク６との係合の仕方については、スライド挿入でもよいし、弾性力を利用して嵌合させてもよい。 The groove portions 8 a and 8 b provided on the inclined surfaces 7 a and 7 b are inserted into and engaged with the protrusions 14 a and 14 b provided on the grip portion 12 of the heat sink 6, so that the light guide diffuser 5 is fitted to the heat sink 6. Combined. The groove portions 8a and 8b may have a protruding shape, and the protruding portions 14a and 14b may have a groove shape. Moreover, about the method of engagement with the inclined surfaces 7a and 7b and the heat sink 6, slide insertion may be sufficient and you may make it fit using elastic force.
　導光拡散体５の傾斜面７ａ，７ｂに設けられた溝部８ａ，８ｂ及び曲面部１１間の導光拡散体の厚さは、１ｍｍとしている。これは、光学設計に基づいて最適な値を定めたものである。すなわち、導光拡散体内で乱反射した光が取付器具側（天井面及び壁面）に届き、その光が照明器具の反射板で広がるように考慮したものである。なお、実施例２として、図１１に示すように、導光拡散体５の突部２１ａ，２１ｂが後述するヒートシンク６の溝部２２ａ，２２ｂに挿入されて係合することにより、導光拡散体５がヒートシンク６に嵌合される構成としてもよい。 The thickness of the light guide diffuser between the groove portions 8a and 8b and the curved surface portion 11 provided on the inclined surfaces 7a and 7b of the light guide diffuser 5 is 1 mm. This is an optimum value determined based on the optical design. That is, it is considered that the light irregularly reflected in the light guide diffuser reaches the fixture side (ceiling surface and wall surface) and spreads on the reflector of the lighting fixture. As Example 2, as shown in FIG. 11, the protrusions 21 a and 21 b of the light guide diffuser 5 are inserted into and engaged with grooves 22 a and 22 b of the heat sink 6 to be described later, whereby the light guide diffuser 5. May be fitted to the heat sink 6.
　曲面部１１は、導光拡散体５内で乱反射した光の反射の連鎖が起きるように、緩やかな曲面状に成形されている。導光拡散体５内で乱反射により拡散した光は、曲面部１１の全面から広範囲に照射される。 The curved surface portion 11 is shaped into a gently curved surface so that a chain of reflection of light irregularly reflected in the light guide diffuser 5 occurs. The light diffused by irregular reflection in the light guide diffuser 5 is irradiated over a wide area from the entire surface of the curved surface portion 11.
　導光拡散体５は、表面に、コンプレッサーによって、研磨材を混ぜた圧縮空気を吹き付けるブラスト加工が施されており、ブラスト加工によって形成される凹凸のサイズは、１μから１ｍｍとされ、曲面部１１の形状、及び、このブラスト加工によって表面に形成された凹凸により、ＬＥＤ光源部３から受光した光を乱反射させることを可能にし、発光方向を光学設計技術により自在に変化させることができる。なお、導光拡散体５の表面の凹凸は、ブラスト加工に限られず、金型等を用いた一体成形によって形成してもよい。 The light guide diffuser 5 is blasted on the surface by blowing compressed air mixed with an abrasive by a compressor, and the size of the irregularities formed by the blasting is 1 μm to 1 mm. And the irregularities formed on the surface by this blasting process, the light received from the LED light source unit 3 can be irregularly reflected, and the light emission direction can be freely changed by an optical design technique. The unevenness on the surface of the light guide diffuser 5 is not limited to blasting, and may be formed by integral molding using a mold or the like.
　次に、図１，図４及び図１２を参照して、ヒートシンク６の構成を説明する。このヒートシンク６は、導光拡散体５と略同じサイズに小型化されており、ＬＥＤ光源部３と基板４とを収容し、管体２の内側方向に突出する把持部１２と、把持部１２の両側面に位置する凹部１３ａ，１３ｂと、導光拡散体５と嵌合するための突部１４ａ，１４ｂと、基板４の裏面側に位置し、管体長手方向に配列された複数枚のフィン部１５とを主要部として備えている。 Next, the configuration of the heat sink 6 will be described with reference to FIG. 1, FIG. 4 and FIG. The heat sink 6 is miniaturized to approximately the same size as the light guide diffuser 5. The heat sink 6 accommodates the LED light source unit 3 and the substrate 4 and protrudes inward of the tube body 2. Recesses 13a, 13b located on both sides of the projection, protrusions 14a, 14b for fitting with the light guide diffuser 5, and a plurality of sheets located on the back side of the substrate 4 and arranged in the longitudinal direction of the tube The fin part 15 is provided as a main part.
　ヒートシンク６は、例えばアルミニウム等の軽量かつ熱伝導性が高い材料からなり、把持部１２と、凹部１３ａ，１３ｂと、突部１４ａ，１４ｂとフィン部１５とが縦断面視コ字状に一体成形されている。なお、ヒートシンク６は、実施例２として、図１２に示すように、把持部１２と、溝部２２ａ，２２ｂと、溝部２３ａ，２３ｂとフィン部１５とが縦断面視コ字状に一体成形され、溝部２２ａ，２２ｂと、溝部２３ａ，２３ｂとを間仕切る突部２４ａ，２４ｂが設けられている構成としてもよい。 The heat sink 6 is made of a light material having high thermal conductivity such as aluminum, for example, and the grip portion 12, the recesses 13a and 13b, the protrusions 14a and 14b, and the fin portion 15 are integrally formed in a U-shape in a longitudinal section. Has been. As shown in FIG. 12, the heat sink 6 is integrally formed with a grip portion 12, groove portions 22 a and 22 b, groove portions 23 a and 23 b, and a fin portion 15 as a second embodiment as shown in FIG. It is good also as a structure provided with protrusion part 24a, 24b which partitions off groove part 22a, 22b and groove part 23a, 23b.
　ヒートシンク６は、基板４の裏面と密着し、導光拡散体５に嵌合するよう設けられているため、基板４及び導光拡散体５との接触面から伝導した熱を、フィン部１５を介して効率よく放出することができる。なお、この突部１４ａ，１４ｂは、溝形状とし、溝部８ａ，８ｂを突形状としてもよい。 Since the heat sink 6 is provided in close contact with the back surface of the substrate 4 and fitted to the light guide diffuser 5, the heat conducted from the contact surface between the substrate 4 and the light guide diffuser 5 is transferred to the fin portion 15. Can be released efficiently. The protrusions 14a and 14b may have a groove shape, and the groove portions 8a and 8b may have a protrusion shape.
　ヒートシンク６は、フィン部１５の各先端が描く軌跡を断面視円弧状としたことで管体２と組み合わせた時に、全体として円筒状の一般の蛍光灯と同様の形態となり、既存の直管型蛍光灯用のエンドキャップを取り付けることができる。なお、フィン部１５は、実施例２においては、図１２に示すように、管体長手方向に延びる板とし、フィンを８．４ｍｍの幅に等間隔に４枚備えた構成としている。また、フィン部１５は、各フィンの先端の厚みを０．８ｍｍ、溝の一番深い部分に位置するフィンの厚みを１．１ｍｍ、フィン部１５の間の溝の深さの最大を３．３ｍｍとしている。 When the heat sink 6 is combined with the tubular body 2 by making the trajectory drawn by each tip of the fin portion 15 into a circular arc when viewed in cross section, the heat sink 6 has a shape similar to that of a general cylindrical fluorescent lamp as a whole. End caps for fluorescent lamps can be attached. In the second embodiment, as shown in FIG. 12, the fin portion 15 is a plate extending in the longitudinal direction of the tubular body, and has four fins equidistantly with a width of 8.4 mm. The fin portion 15 has a thickness of 0.8 mm at the tip of each fin, a thickness of the fin located at the deepest portion of the groove of 1.1 mm, and a maximum depth of the groove between the fin portions 15 of 3. It is 3 mm.
　続いて、ＬＥＤ蛍光照明装置１の動作について説明する。先ず、ユーザが電源を入れると基板４の回路に電源が供給されてＬＥＤ光源部３が発光する。ＬＥＤ光源部３から照射された光の角度は１２０°であり、ＬＥＤ光源部３と向かい合うように設けられた、導光拡散体５の受光面９が、ＬＥＤ光源部３から照射された光の略全てを受光する。 Subsequently, the operation of the LED fluorescent lighting device 1 will be described. First, when the user turns on the power, the power is supplied to the circuit of the substrate 4 and the LED light source unit 3 emits light. The angle of the light emitted from the LED light source unit 3 is 120 °, and the light receiving surface 9 of the light guide diffuser 5 provided so as to face the LED light source unit 3 emits the light emitted from the LED light source unit 3. Receives almost all light.
　導光拡散体５の受光面９で受光した光は、導光拡散体５内を透過し、曲面部１１の形状、及び、導光拡散体５の表面にブラスト加工が施されたことによって、曲面部１１で乱反射し、乱反射した光が、更に、導光拡散体内を透過して曲面部１１で乱反射する。この乱反射の連鎖によって、光が導光拡散体５内を広範囲に拡散することとなる。 The light received by the light receiving surface 9 of the light guide diffuser 5 is transmitted through the light guide diffuser 5, and the shape of the curved surface portion 11 and the surface of the light guide diffuser 5 are blasted. The light irregularly reflected by the curved surface portion 11 is diffusely reflected by the curved surface portion 11 through the light guide diffuser. Due to this chain of irregular reflections, light diffuses in the light guide diffuser 5 over a wide range.
　導光拡散体５内を広範囲に拡散した光は、導光拡散体５の曲面部１１から管体２に向けて照射され、管体２は透光性材料からなるので、管体２に向けて照射された光は、そのまま管体２を透過して、管体２の全周面から外部空間へと均一に照射される。 The light diffused in the light guide diffuser 5 over a wide range is irradiated from the curved surface portion 11 of the light guide diffuser 5 toward the tube 2, and the tube 2 is made of a translucent material. The light irradiated in this way passes through the tube 2 as it is, and is uniformly irradiated from the entire circumferential surface of the tube 2 to the external space.
　ＬＥＤ蛍光照明装置１は、管体２が、ヒートシンク６を挾持しており、使用にあたっては、ヒートシンク６が取付器具側に位置するように設置する。ヒートシンク６は導光拡散体５と略同じサイズに小型化されているため、ヒートシンク６によって遮蔽される部分が少なくなるので、管体２から照射される光の照射角度を３４０°まで拡大することができる。これにより、取付器具側（天井面及び壁面）に光が届き、その光が照明器具の反射板で広がるので、事実上、照射範囲を３６０°まで拡大でき、ユーザに違和感を与えることがない。また、導光拡散体５の形状は、目的に応じた形状に変更可能であり、例えば、ユーザが望む照射角度・方向になるように変えることもできる。 The LED fluorescent lighting device 1 is installed so that the tube 2 holds the heat sink 6 and is used so that the heat sink 6 is located on the fixture side. Since the heat sink 6 is downsized to approximately the same size as the light guide diffuser 5, the portion shielded by the heat sink 6 is reduced, so that the irradiation angle of the light irradiated from the tube body 2 is expanded to 340 °. Can do. Thereby, light reaches the fixture side (ceiling surface and wall surface), and the light spreads by the reflector of the lighting fixture. Therefore, the irradiation range can be practically expanded to 360 °, and the user does not feel uncomfortable. Moreover, the shape of the light guide diffuser 5 can be changed to a shape according to the purpose. For example, the light guide diffuser 5 can be changed to have an irradiation angle / direction desired by the user.
　最後に、ＬＥＤ蛍光照明装置１の特性を示す。図９は、ＬＥＤ蛍光照明装置１の実測値に基づく照射範囲を示すグラフである。図９に示すように、ＬＥＤ光源部３からの光が略３４０°の角度に照射されていることが分かる。照射されていない残りの角度２０°については、前述の通り、照明器具の反射板で、反射によって光が届く仕組みになっている。 Finally, the characteristics of the LED fluorescent lighting device 1 are shown. FIG. 9 is a graph showing an irradiation range based on actual measurement values of the LED fluorescent lighting device 1. As shown in FIG. 9, it can be seen that the light from the LED light source unit 3 is irradiated at an angle of approximately 340 °. As for the remaining angle of 20 ° that has not been irradiated, as described above, light is reflected by the reflection plate of the lighting fixture.
　表１は、ＬＥＤ蛍光照明装置１の実測値に基づく照度を他社と比較した表である。
Figure JPOXMLDOC01-appb-T000001
 Table 1 is a table comparing the illuminance based on the actual measurement values of the LED fluorescent lighting device 1 with other companies.
Figure JPOXMLDOC01-appb-T000001
　表１が示すように、ＬＥＤ蛍光照明装置１は、消費電力を抑えながらも演色性の高い、自然光に近く目に優しい光を発光することが分かる。このように、ＬＥＤ蛍光照明装置１は、優れた特性を有することが証明された。 As shown in Table 1, it can be seen that the LED fluorescent lighting device 1 emits light that is close to natural light and gentle to the eyes with high color rendering while suppressing power consumption. Thus, it was proved that the LED fluorescent lighting device 1 has excellent characteristics.
　以上のとおり、本発明によれば、導光拡散レンズ５は、透光性材料からなり、凹凸加工処理が施され、表面に凹凸が加えられたことで、ＬＥＤ光源部３から入射された光が、導光拡散体５の内部を透過し、表面の凹凸により乱反射する。そして、導光拡散体５は乱反射した光が更に反射するような形状に加工されているので、光の反射が連鎖しＬＥＤ光源部３からの光を多方向に拡散させることができる。 As described above, according to the present invention, the light guide diffusing lens 5 is made of a light-transmitting material, subjected to uneven processing, and has an uneven surface. However, it penetrates the inside of the light guide diffuser 5 and is irregularly reflected by the unevenness of the surface. And since the light guide diffuser 5 is processed into a shape that further reflects the irregularly reflected light, the light reflection is chained and the light from the LED light source unit 3 can be diffused in multiple directions.
　また、本発明によれば、ＬＥＤ光源部３に有機エレクトロルミネッセンス（以下、有機ＥＬという。）を用いることで、発光効率は高いが、発熱が少なく、また、有機ＥＬ自体が発光するため電圧が低く抑えられ、消費電力を削減することができる。 Further, according to the present invention, by using organic electroluminescence (hereinafter referred to as “organic EL”) for the LED light source unit 3, the luminous efficiency is high, but there is little heat generation, and the voltage is increased because the organic EL itself emits light. Low power consumption can be reduced.
　また、本発明によれば、カバーの形状が長尺な蛍光灯状の管体２であり、ＬＥＤ光源部３及び基板４並びにヒートシンク６も長尺であり、ＬＥＤ光源部３は基板４上に管体長手方向に一列に配置されているため、請求項１又は請求項２の効果を奏する照明装置として、従来の蛍光灯に代替させることができる。 Moreover, according to this invention, it is the fluorescent lamp-like tube body 2 with the shape of a cover long, the LED light source part 3, the board | substrate 4, and the heat sink 6 are also long, and the LED light source part 3 is on the board | substrate 4. Since they are arranged in a line in the longitudinal direction of the tubular body, a conventional fluorescent lamp can be used as an illumination device that exhibits the effect of claim 1 or claim 2.
　また、本発明によれば、導光拡散体５の受光面９が、ＬＥＤ光源部３のおもて面と向かい合うように配されているので、ＬＥＤ特有の直進的な光を効率的に受光することができる。また、導光拡散体５の形状を縦断面視略三日月型としたことにより、導光拡散体５内で乱反射した光を三日月型の曲面で受光できるので、より効率的な反射の連鎖が起き、導光拡散体５の三日月型曲面部１１の全面から広範囲に照射できる。 In addition, according to the present invention, the light receiving surface 9 of the light guide diffuser 5 is disposed so as to face the front surface of the LED light source unit 3, so that the straight light specific to the LED is efficiently received. can do. In addition, since the light guide diffuser 5 has a substantially crescent shape when viewed in longitudinal section, the light irregularly reflected in the light guide diffuser 5 can be received by a crescent-shaped curved surface, so that a more efficient reflection chain occurs. It is possible to irradiate a wide range from the entire surface of the crescent-shaped curved surface portion 11 of the light guide diffuser 5.
　また、本発明によれば、導光拡散体５の傾斜面７ａ，７ｂに溝部（又は突部）８ａ，８ｂを設け、ヒートシンンク６に突部（又は溝部）１４ａ，１４ｂを設けたことにより、導光拡散体５の傾斜面７ａ，７ｂとヒートシンンク６とを嵌合させて管体２内において導光拡散体５の落下を防止するとともに、導光拡散体５の熱をＬＥＤ光源部３及び基板４の熱とともに放熱することができる。 Further, according to the present invention, the inclined portions 7a and 7b of the light guide diffuser 5 are provided with the groove portions (or protruding portions) 8a and 8b, and the heat sink 6 is provided with the protruding portions (or groove portions) 14a and 14b. The inclined surfaces 7a and 7b of the light guide diffuser 5 and the heat sink 6 are fitted to prevent the light guide diffuser 5 from falling in the tube 2, and the heat of the light guide diffuser 5 is transferred to the LED light source unit 3 and The heat can be dissipated together with the heat of the substrate 4.
　また、本発明によれば、ＬＥＤ光源部３のおもて面と導光拡散体５の受光面９との距離を０～１．０ｍｍの範囲としたことにより、ＬＥＤ光源部３と導光拡散体５の受光面９との距離が近くなるためＬＥＤ光源部３と導光拡散体５の受光面９までの光束を高めることができ、光利用効率が向上すると共に、受光面９に入射した光を導光拡散体５により拡散させることによって、ＬＥＤ光源部３と導光拡散体５との距離が近づくことによって生じる輝度ムラを抑えながらも下方光束を高めることができる。 According to the present invention, the distance between the front surface of the LED light source unit 3 and the light receiving surface 9 of the light guide diffuser 5 is in the range of 0 to 1.0 mm, so Since the distance from the light receiving surface 9 of the diffuser 5 is reduced, the luminous flux to the LED light source 3 and the light receiving surface 9 of the light guide diffuser 5 can be increased, and the light utilization efficiency is improved and the light incident surface 9 is incident. The diffused light is diffused by the light guide diffuser 5, so that the lower luminous flux can be enhanced while suppressing unevenness in brightness that occurs when the distance between the LED light source unit 3 and the light guide diffuser 5 approaches.
　また、本発明によれば、各フィンの厚さを０．６～１．０ｍｍ、溝の深さの最大を２．５～４．０ｍｍとしたことにより、表面積が広くなり放熱性を高めることができるため、サイズの大きなＬＥＤチップを用い熱量が増加した場合でも、十分な放熱効果が得られる。 In addition, according to the present invention, the thickness of each fin is 0.6 to 1.0 mm and the maximum depth of the groove is 2.5 to 4.0 mm, so that the surface area is widened and heat dissipation is improved. Therefore, even when the amount of heat is increased using a large LED chip, a sufficient heat dissipation effect can be obtained.
　さらに、本発明によれば、ヒートシンク６は、溝部２２ａ，２２ｂに並列して管体長手方向に沿って長尺に設けられた溝部２３ａ，２３ｂを備えたことにより、溝部２２ａ，２２ｂと溝部２３ａ，２３ｂとを間仕切る突部２４ａ，２４ｂが形成され、溝部２２ａ，２２ｂに突部２１ａ，２１ｂを係合させた際、拡散導光体５の突部２１ａ，２１ｂから開口端辺１０a，１０ｂ側に出射される直進的な光が、突部２４ａ，２４ｂによって遮蔽されることで柔らかな拡散光だけが開口端辺１０a，１０ｂ側に照射されるので、輝度ムラを減らすことができる。 Furthermore, according to the present invention, the heat sink 6 includes the groove portions 23a and 23b that are provided in parallel along the longitudinal direction of the tubular body in parallel with the groove portions 22a and 22b, so that the groove portions 22a and 22b and the groove portion 23a are provided. , 23b are formed, and when the protrusions 21a, 21b are engaged with the groove portions 22a, 22b, the opening edges 10a, 10b from the protrusions 21a, 21b of the diffusion light guide 5 are formed. Since the straight light emitted to the side is shielded by the protrusions 24a and 24b, only the soft diffused light is irradiated to the opening end sides 10a and 10b, so that the luminance unevenness can be reduced.
　なお、本発明は前述した実施の形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲において種々の変更が可能であることは勿論である。 It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
１　　　　ＬＥＤ蛍光照明装置
２　　　　管体
３　　　　ＬＥＤ光源部
４　　　　基板
５　　　　導光拡散体
６　　　　ヒートシンク
７ａ，７ｂ　傾斜面
８ａ，８ｂ　溝部（又は突部）
９　　　　受光面
１０ａ，１０ｂ　開口端辺
１１　　　曲面部
１２　　　把持部
１３ａ，１３ｂ　凹部　　　　
１４ａ，１４ｂ　突部（又ｈ溝部）
１５　　　フィン部
１６ａ，１６ｂ　エンドキャップ
１７ａ，１７ｂ　支持端子部
２１ａ，２１ｂ　突部
２２ａ，２２ｂ　溝部
２３ａ，２３ｂ　溝部
２４ａ，２４ｂ　突部
Ｌ１，Ｌ２，Ｌ３　光
Ｓ　　　　ソケット
１０１　　ＬＥＤ蛍光照明装置
１０２　　光源基板
２０１　　ＬＥＤ蛍光照明装置
２０２　　管体
２０３　　内壁
２０４　　管体部
２０５　　管体部
２０６　　発光装置
２０７　　蛍光体
２０８　　電源回路
２０９　　導光拡散体 DESCRIPTION OF SYMBOLS 1 LED fluorescent lighting apparatus 2 Tube 3 LED light source part 4 Board | substrate 5 Light guide diffuser 6 Heat sink 7a, 7b Inclined surface 8a, 8b Groove part (or protrusion)
9 Light-receiving surface 10a, 10b Open end 11 Curved surface portion 12 Grip portion 13a, 13b Recess
14a, 14b Projection (also h groove)
15 Fin portions 16a, 16b End caps 17a, 17b Support terminal portions 21a, 21b Protruding portions 22a, 22b Groove portions 23a, 23b Groove portions 24a, 24b Protruding portions L1, L2, L3 Light S socket 101 LED fluorescent lighting device 102 Light source substrate 201 LED Fluorescent lighting device 202 Tube 203 Inner wall 204 Tube portion 205 Tube portion 206 Light emitting device 207 Fluorescent material 208 Power supply circuit 209 Light guide diffuser

Claims (8)

  1. 　基板で発生する熱を放熱するヒートシンクと、該ヒートシンクに把持された点灯回路を有する基板と、該基板のおもて面に設けられた平板状のＬＥＤ光源部と、該ヒートシンク及び該基板並びに該ＬＥＤ光源部を収容する透光性材料からなるカバーとを備えるＬＥＤ蛍光照明装置において、
    　表面に凹凸加工処理が施された透光性材料からなる導光拡散体を備え、
    　前記導光拡散体は、前記ＬＥＤ光源部から照射された光が、導光拡散体内部において、凹凸加工処理により形成された表面の凹凸により乱反射し、乱反射した光が更に反射するような形状に加工されていることを特徴とするＬＥＤ蛍光照明装置。     A heat sink that dissipates heat generated by the substrate, a substrate having a lighting circuit held by the heat sink, a flat LED light source portion provided on the front surface of the substrate, the heat sink, the substrate, and the substrate In an LED fluorescent lighting device comprising a cover made of a translucent material that houses an LED light source unit,
    Provided with a light guide diffuser made of a translucent material whose surface has been subjected to uneven processing,
    The light guide diffuser is shaped so that the light emitted from the LED light source is irregularly reflected by the irregularities on the surface formed by the irregularity processing inside the light guide diffuser, and the irregularly reflected light is further reflected. An LED fluorescent lighting device that is processed.
  2. 　前記ＬＥＤ光源部のＬＥＤとして有機エレクトロルミネッセンスを用いることを特徴とする請求項１に記載のＬＥＤ蛍光照明装置。 2. The LED fluorescent lighting device according to claim 1, wherein organic electroluminescence is used as the LED of the LED light source section.
  3. 　前記カバーは長尺の蛍光灯状の管体であり、
    　前記ヒートシンク及び前記基板並びに前記ＬＥＤ光源部は長尺で、
    　前記ＬＥＤ光源部は、前記基板上に管体長手方向に一列に配置されていること特徴とする請求項１又は請求項２に記載のＬＥＤ蛍光照明装置。     The cover is a long fluorescent lamp-like tube,
    The heat sink, the substrate, and the LED light source unit are long,
    3. The LED fluorescent lighting device according to claim 1, wherein the LED light source units are arranged in a line in a longitudinal direction of a tube on the substrate.
  4. 　前記導光拡散体は、縦断面視略三日月型に形成されており、
    　前記導光拡散体の凹部は、前記ＬＥＤ光源部のおもて面と向かい合わせになるように設けられ、該ＬＥＤ光源部から照射される光を受容する受光面と、縦断面視ハの字となるように設けられ、前記ヒートシンクを把持する一対の傾斜面とで構成されることを特徴とする請求項３に記載のＬＥＤ蛍光照明装置。     The light guide diffuser is formed in a substantially crescent shape when viewed in a longitudinal section,
    The concave portion of the light guide diffuser is provided so as to face the front surface of the LED light source unit, and a light receiving surface that receives light emitted from the LED light source unit, The LED fluorescent lighting device according to claim 3, wherein the LED fluorescent lighting device is configured to include a pair of inclined surfaces that hold the heat sink.
  5. 　前記導光拡散体は、前記傾斜面のそれぞれに、管体長手方向に延びる第１突部が設けられており、
    　前記ヒートシンクは、前記突部と係合する管体長手方向に延びる第１溝部が設けられており、
    　前記導光拡散体の第１突部が前記ヒートシンクの第１溝部に挿入されて係合することにより、該導光拡散体と該ヒートシンクとが嵌合することを特徴とする請求項４に記載のＬＥＤ蛍光照明装置。     The light guide diffuser is provided with a first protrusion extending in the tube longitudinal direction on each of the inclined surfaces,
    The heat sink is provided with a first groove extending in the longitudinal direction of the tubular body to be engaged with the protrusion,
    5. The light guide diffuser and the heat sink are engaged with each other by inserting and engaging the first protrusion of the light guide diffuser into the first groove of the heat sink. LED fluorescent lighting device.
  6. 　前記ＬＥＤ光源部のおもて面と前記導光拡散体の受光面との距離が、０～１．０ｍｍの範囲にあることを特徴とする請求項５に記載のＬＥＤ蛍光照明装置。 The LED fluorescent illumination device according to claim 5, wherein the distance between the front surface of the LED light source unit and the light receiving surface of the light guide diffuser is in the range of 0 to 1.0 mm.
  7. 　前記管体は、長手方向に沿って長尺な開口部が設けられており、
    　前記ヒートシンクは、厚さが０．６～１．３ｍｍの管体長手方向に延びる板状のフィンを７．０～９．０ｍｍの幅に等間隔に４枚備えたフィン部を有し、前記フィン部の間の溝の深さの最大が２．５～４．０ｍｍの範囲にあり、前記フィン部の各先端を内挿補間した軌跡が断面視円弧状であり、前記フィン部が表出して全体として円筒形になるように前記管体と組み合わされることを特徴とする請求項６に記載のＬＥＤ蛍光照明装置。     The tube is provided with a long opening along the longitudinal direction,
    The heat sink has a fin portion provided with four plate-like fins having a thickness of 0.6 to 1.3 mm extending in the longitudinal direction of the tube body at an equal interval of a width of 7.0 to 9.0 mm, The maximum depth of the groove between the fin portions is in the range of 2.5 to 4.0 mm, and the trajectory obtained by interpolating the tips of the fin portions is an arc shape in cross section, and the fin portions are exposed. The LED fluorescent lighting device according to claim 6, wherein the LED fluorescent lighting device is combined with the tube so as to form a cylindrical shape as a whole.
  8. 　前記ヒートシンクは、前記開口部の開口端辺部によって、前記管体の外側に向かって前記第１溝部に並列して管体長手方向に沿って長尺に設けられた第２溝部と咬合されて、挾持されることを特徴とする請求項７に記載のＬＥＤ蛍光照明装置。 The heat sink is engaged with a second groove portion that is provided along the longitudinal direction of the tube body in parallel with the first groove portion toward the outside of the tube body by the opening end side portion of the opening portion. The LED fluorescent lighting device according to claim 7, wherein the LED fluorescent lighting device is held.
PCT/JP2013/054869 2012-02-27 2013-02-26 Led fluorescent illumination apparatus WO2013129362A1 (en)

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JP2012039465A JP5296236B2 (en) 2012-02-27 2012-02-27 LED fluorescent lighting device
JP2012-039465 2012-02-27

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