WO2009104518A1 - 光源ユニット、照明装置及び表示装置 - Google Patents
光源ユニット、照明装置及び表示装置 Download PDFInfo
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- WO2009104518A1 WO2009104518A1 PCT/JP2009/052375 JP2009052375W WO2009104518A1 WO 2009104518 A1 WO2009104518 A1 WO 2009104518A1 JP 2009052375 W JP2009052375 W JP 2009052375W WO 2009104518 A1 WO2009104518 A1 WO 2009104518A1
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- Prior art keywords
- light source
- source unit
- light
- light sources
- electronic components
- Prior art date
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Images
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0404—Signs, boards or panels, illuminated from behind the insignia the light source being enclosed in a box forming the character of the sign
-
- 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
Definitions
- the present invention relates to a light source unit having a light source and an electronic component constituting a circuit for supplying current to the light source, and an illumination device and a display device using the light source unit.
- various methods of using a light source to make a bright surface rise so that a display device such as a signboard or a sign can be recognized even at night For example, a method of attaching a color film or color poster on a flat surface and illuminating with a light source from the front (external lighting method), or a method of illuminating from the back by placing a light source on the back of a transparent material such as a plastic plate (internal illumination type) ), A method of making a light such as a fluorescent lamp, a neon tube, or the like to recognize a light source, a pattern such as a pattern (light-emitting type), and the like.
- Fluorescent lamps, neon tubes, and other light sources have a short life, so the frequency of maintenance for replacing the light source is high. For this reason, especially when it is provided at a high place like an outdoor signboard, there has been a demand for reducing the frequency of maintenance because the burden on the user is heavy. Therefore, in recent years, with the increase in luminance of light emitting diodes (hereinafter referred to as LEDs), LEDs having characteristics such as low power consumption and long life have been used as light sources in place of light sources such as fluorescent lamps and neon tubes. .
- the flexibility of the layout of the light source is particularly high.
- the LED is a small light source, the shape of the light emitting surface of the LED can be freely formed.
- LED When LED is used as a light source and each LED is arranged in accordance with the shape of a character or a picture, it is necessary to mount a large number of LEDs, which takes time for installation and wiring work. Therefore, a light source unit in which a plurality of LEDs are packaged to such an extent that the degree of freedom of layout is not impaired is used.
- the light source unit disclosed in Patent Literature 1 accommodates a plurality of LEDs and a circuit board provided with a transformer, a rectifier circuit, a constant voltage circuit, and a constant current circuit inside a case whose upper surface is opened. It is configured. With this configuration, since a constant current is supplied to the LEDs in each light source unit, it is possible to suppress uneven brightness while ensuring a degree of freedom in layout.
- JP 2004-310090 A JP 2004-310090 A
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a light source unit that can be thinned, an illumination device having the light source unit, and a display device.
- a light source unit includes a plurality of light sources and an electronic component that constitutes a circuit that supplies current to the plurality of light sources.
- the electronic component is disposed between the plurality of light sources. It is characterized by being.
- the light source unit can be thinned by appropriately arranging a plurality of light sources and electronic components.
- the electronic components are arranged between the plurality of light sources, when the electric power supply wires are connected to the electronic components, and the electric wires are further connected from the electronic components to each light source, the electric wires from the electronic components to the light sources Can be wired without straddling other light sources, the wiring in the light source unit can be shortened, and wiring construction is facilitated.
- a light source unit includes a plurality of light sources and an electronic component that constitutes a constant current unit that makes constant a current supplied to the plurality of light sources, wherein the electronic component includes the plurality of light sources. It is arranged in between.
- the light source unit can be thinned by appropriately arranging a plurality of light sources and electronic components constituting the constant current portion.
- the electronic components are arranged between the plurality of light sources, when the electric power supply wires are connected to the electronic components, and the electric wires are further connected from the electronic components to each light source, the electric wires from the electronic components to the light sources Can be wired without straddling other light sources, the wiring in the light source unit can be shortened, and wiring construction is facilitated.
- a light source unit includes a support that supports the plurality of light sources and electronic components, the support has a flat surface, and the plurality of light sources and electronic components are arranged in parallel on the flat surface. It is characterized by being.
- the light source unit can be thinned.
- the light source unit according to the present invention is characterized in that the electronic component has a connection portion to which a power supply wire is connected on a side from which light from the plurality of light sources is emitted.
- the connection portion to which the electric power supply wires for the electronic components are connected is provided on the same side as the side from which the light from the plurality of light sources is emitted.
- the electric wire is the opening of the light source unit. It will be connected from the side of a part or the upper part of the side surface of a housing
- a diffusion plate that diffuses light from the light source is generally provided at an appropriate distance from the light source. Since the electric wires are positioned in the gaps between them, it is possible to reduce the thickness of products such as lighting devices and display devices.
- the light source unit according to the present invention is characterized in that the intervals between the plurality of light sources and the electronic component are substantially the same.
- the wiring between the light source units can be easily performed, and the wiring within the light source unit can also be performed. It becomes easy.
- the light source unit according to the present invention is characterized in that a heat conductive sheet is interposed between the support and the plurality of light sources and / or electronic components.
- a heat conductive sheet is interposed between the support and a plurality of light sources and / or electronic components, and heat from a heat source such as a light source is transferred to the support via the heat conductive sheet. Since it is transmitted efficiently, heat dissipation can be improved and a light source with higher brightness can be used. By using a light source with higher brightness, when the light source unit is applied to a product such as a lighting device or a display device, the number of the light source units to be used can be reduced, and the installation of the light source unit and the wiring can be facilitated. Become.
- the support body contains the plurality of light sources and electronic components therein, and the support is filled with resin so as to cover the plurality of light sources and electronic components. It is characterized by being.
- the inside of the support is filled with resin, and the plurality of light sources and electronic components housed in the support are covered with the resin, so that the environment is exposed to rain dew such as outdoors. Can also be used.
- the light source unit according to the present invention is characterized in that the support is provided with a partition plate for partitioning the plurality of light sources and electronic components.
- a partition plate for partitioning a plurality of light sources and electronic components is provided, and the resin is filled only in a portion partitioned by the partition plate. Therefore, the amount of resin to be filled to cover the light source and the electronic components Can be reduced.
- the light source unit according to the present invention is characterized in that the plurality of light sources are connected in series.
- a plurality of light sources are connected in series, and by appropriately setting the power supply voltage according to the power consumption of the light sources and the electronic components, compared to the case where the light sources are connected in parallel.
- the amount of current can be reduced, and the power supply wire can be made thinner.
- electric wires having the same thickness are used, more light source units can be connected.
- the light source unit according to the present invention is characterized in that the light source is formed by connecting a plurality of LEDs in parallel.
- the light source since the light source is configured by connecting a plurality of LEDs in parallel, it can be lit even when one LED fails, and the reliability of the light source unit can be improved.
- An illumination device includes the light source unit described in the above-described invention.
- the illumination device since the illumination device is configured using the light source unit, the illumination device can be thinned. Moreover, attachment of the light source unit to the lighting device and construction of wiring can be facilitated.
- the illuminating device includes a diffusion plate facing the light source unit at a distance and diffusing light from the light source unit, and the light source unit is not more than an interval between the light source and the diffusion plate.
- the light source is provided so as to be arranged at a substantially same interval.
- the light source units are provided so that the light sources are arranged at substantially the same interval which is equal to or less than the interval between the light source and the diffusion plate, a plurality of light sources are overlapped instead of being point light sources.
- a single surface light source it can be recognized by a person, and it is possible to avoid giving the person a sense of discomfort or discomfort.
- the intervals between the light sources are substantially the same, it is possible to perform an optimal design of the lighting device in consideration of the reduction in thickness and the uniformity of emitted light.
- a display device includes the light source unit described in the above-described invention.
- the display device since the display device is configured using the light source unit, the display device can be thinned. In addition, it is possible to facilitate attachment of the light source unit to the display device and wiring.
- the display device includes a housing that houses the light source unit, and the light source unit is provided so that the light sources are arranged at substantially the same interval along the shape of the housing. It is characterized by being.
- the light source unit is provided so that the light sources are arranged at substantially the same interval along the shape of the housing, the shape of characters, designs, etc. represented by the housing is changed. It can be displayed clearly.
- the display device includes a diffusion plate that is provided in the housing so as to face the light source unit in a spaced manner, and diffuses light from the light source unit.
- the distance between the light source and the diffusion plate is equal to or smaller than the distance.
- the interval between the light sources is set to be equal to or less than the interval between the light source and the diffusion plate, so that a plurality of light sources are recognized as one overlapping surface light source instead of a point light source.
- the light source unit, the illumination device having the light source unit, and the display device can be thinned.
- FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG. It is a typical top view of the light source unit in the state where resin is not filled. It is a typical top view of an LED module.
- 2 is an electric circuit diagram of the light source unit according to Embodiment 1.
- FIG. 3 is a schematic cross-sectional view of a signboard provided with the light source unit according to Embodiment 1.
- FIG. 7 is a schematic side view seen from the arrow VII-VII in FIG. 6. 6 is another example of arrangement of the light source units according to Embodiment 1. 6 is another example of arrangement of the light source units according to Embodiment 1.
- FIG. 1 is a schematic plan view of a light source unit 10 according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG.
- FIG. 3 is a schematic plan view of the light source unit 10 in a state where the resin described later is not filled.
- reference numeral 1 denotes a metal module case having excellent thermal conductivity such as aluminum and copper.
- the module case 1 includes a rectangular plate portion 11 and a peripheral wall 12 standing on the periphery of the rectangular plate portion 11.
- rectangular plate-like fixing portions 13, 13 extending from the approximate center of the short side of the rectangular plate portion 11 in a direction perpendicular to the short side are provided.
- Screw holes 13a and 13a are formed in the fixing portions 13 and 13, respectively.
- screw holes 11a, 11b, 11b,... Are formed in the center and both ends of the rectangular plate portion 11 of the module case 1, respectively.
- the constant current part 2 is provided in the approximate center of the upper surface of the rectangular plate part 11 of the module case 1.
- the constant current unit 2 includes a substrate 21 made of epoxy resin having a rectangular plate shape.
- the substrate 21 includes a constant current circuit composed of electronic components of a variable regulator IC 22 and a resistor 23, a fuse 24, a capacitor 25, and a varistor.
- a protection circuit made up of electronic components such as 26 is provided.
- the constant current circuit and the protection circuit are used as the constant current unit 2.
- the constant current unit only needs to include at least one electronic component constituting the constant current circuit.
- Two ground connection terminals 27a and 27a are arranged substantially in the center of the substrate 21 so as to be parallel to the lateral direction of the substrate 21, and two power connection terminals are provided in parallel to the ground connection terminals 27a and 27a.
- 27b and 27b are provided.
- the ground connection terminals 27a and 27a and the power supply connection terminals 27b and 27b are connected to grounding wires 51 and 51 and 24V power supply wires 52 and 52 from the upper side of the module case 1, respectively. is there.
- Two connection terminals 27c, 27c,... are disposed at both ends in the longitudinal direction of the substrate 21, respectively.
- Wires 28, 28,... For supplying current to LED modules (light sources) described later are connected to the connection terminals 27c, 27c, respectively.
- a screw hole 21 a is provided in the approximate center of the substrate 21.
- Such a substrate 21 is fixed to the module case 1 by screwing screws 29 into screw holes 21 a and 11 a provided in the center of the substrate 21 and the rectangular plate portion 11 of the module case 1. Moreover, between the board
- FIG. 4 is a schematic plan view of the LED module 3.
- reference numeral 31 denotes a ceramic LED substrate such as aluminum oxide (alumina).
- the LED substrate 31 has a rectangular shape, and screw holes 31 a and 31 a are provided at two opposite corners of the LED substrate 31.
- a wiring pattern 32 is formed in parallel at the center of the LED substrate 31 by using a photoetching method or the like, and a plurality of wiring patterns 32 corresponding to the LED mounting guide marks 33 formed along the wiring pattern 32 are provided.
- blue LEDs (36, for example) 34, 34... are fixed in parallel in three rows by a resin such as an epoxy resin.
- the plurality of LEDs 34, 34... are connected in parallel to the wiring pattern 32 by, for example, 12 LED rows in which three LEDs 34, 34. So that they are electrically connected.
- a reflective layer (not shown) for reflecting light is formed inside the LED substrate 31 by a sputtering method. Thereby, the light which permeate
- the plurality of LEDs 34, 34... Mounted in this way are covered and sealed with a sealing resin 35 such as an epoxy resin in which yellow phosphors that are excited by light from the LEDs 34, 34.
- the light emitting part 3a of the LED module 3 is configured by the plurality of LEDs 34, 34... And the sealing resin 35 in which the yellow light emitter is dispersed.
- input terminals 36 a and output terminals 36 b are provided at two opposite corners of the LED substrate 31.
- the input terminal 36a and the output terminal 36b of the LED board 31 are connected to the connection terminals 27c and 27c of the board 21 by electric wires 28 and 28, respectively.
- the LED modules 3 and 3 are connected in series.
- Such LED modules 3, 3 are provided with screw 37 in screw holes 31 a, 31 a, 11 b, 11 b, provided in the LED boards 31, 31 of the LED modules 3, 3 and the rectangular plate part 11 of the module case 1, respectively. , 37... Are fixed to the module case 1 by screwing. Moreover, between LED board 31 and 31 and the rectangular board part 11, the heat conductive sheet (not shown) which consists of material excellent in electrical insulation and heat conductivity, such as a silicon resin, is interposed, for example. is there.
- the module case 1 provided with the constant current part 2 and the LED modules 3 and 3 is transparent with excellent waterproof properties so as to cover the constant current part 2 and the LED modules 3 and 3.
- Resin 4 is filled.
- silicon resin is used as the resin 4.
- FIG. 5 is an electric circuit diagram of the light source unit 10 according to the first embodiment.
- the electric wire 52 for 24V power supply is connected to the power supply circuit part (not shown).
- the 24V power supply voltage is supplied to the 24V power supply wire 52 after the AC current supplied from the external power supply is rectified into a DC current by the power supply circuit unit.
- the forward voltage of the LED modules 3 and 3 used in the present embodiment is 10.6V, and the supplied power supply voltage of 24V is the forward direction of the LED modules 3 and 3 connected in series.
- the voltage is determined in consideration of 21.2 V obtained by adding the voltages and the voltage drop in the constant current portion 2 and the electric wire 52.
- One end of the fuse 24 is connected to the electric wire 52 for 24V power supply. As a result, when an overcurrent occurs, the fuse 24 is quickly blown, so that the circuit is protected from smoke and fire.
- the other end of the fuse 24 is connected to one end of a constant current circuit 2 a composed of a variable three-terminal regulator IC 22 and a resistor 23.
- the variable three-terminal regulator IC 22 is controlled so as to keep the voltage between the output terminal and the adjustment terminal of the variable three-terminal regulator IC constant. Thereby, the output voltage is adjusted so as to have a constant current value corresponding to the resistance value of the resistor 23.
- the other end of the constant current circuit 2a is connected to one end of the light emitting unit 3a of one LED module 3.
- One end of the light emitting part 3a of the other LED module 3 is connected to the other end of the light emitting part 3a of the one LED module 3.
- a grounding electric wire 51 is connected to the other end of the light emitting portion 3a of the other LED module 3.
- the other end of the fuse 24 is connected to one end of a capacitor 25 and a varistor 26, respectively.
- a grounding wire 51 is connected to the other ends of the capacitor 25 and the varistor 26.
- the capacitor 25 is a so-called bypass capacitor, and high-frequency component noise is removed by the capacitor 25.
- the light source unit 10 configured as described above, when a rectified direct current is supplied from the power supply circuit unit when the power is turned on, the supplied current has a constant current value in the constant current unit 2. After the adjustment, the light is supplied to the light emitting units 3a and 3a connected in series, and the light emitting units 3a and 3a are stably lit with substantially the same brightness.
- the constant current unit 2 is provided inside the light source unit 10, a constant current value is stably supplied to the LEDs 34, 34, and the brightness unevenness can be suppressed. Since the plurality of LED modules 3 and 3 and the constant current portion 2 are arranged in parallel on the upper surface of the rectangular plate portion 11 of the module case 1, the light source unit 10 can be thinned.
- the LED modules 3 and 3 used as the light source are high-intensity LED modules in which a plurality of blue LEDs (for example, 36) 34, 34. Therefore, even if the LED modules 3 and 3 are provided at a distance of about 10 cm as in the present embodiment, sufficient illuminance can be obtained and the space between the LED modules 3 and 3 inside the light source unit 10 can be effectively used.
- electronic components such as a variable regulator IC 22, a resistor 23, a fuse 24, a capacitor 25, and a varistor 26 constituting the constant current unit 2 can be provided.
- the light source unit 10 is applied to products, such as an illuminating device and a display apparatus, it can illuminate efficiently with few light source units 10.
- the constant current portion 2 and the LED modules 3 and 3 are arranged in parallel so that the constant current portion 2 is positioned between the LED modules 3 and 3 on the rectangular plate portion 11 of the module case 1, the constant current portion 2 can be wired without straddling the other LED modules 3, and the wiring in the light source unit 10 can be shortened and the wiring of the LED modules 3, 3 can be shortened. Construction becomes easy. Since the constant current portion 2 is provided at a position where the intervals between the plurality of LED modules 3 and 3 are substantially the same, the wiring between the light source units 10, 10. Is easy to install, and wiring in the light source unit 10 is also easy to install.
- the light source unit 10 can be thinned. .
- a heat conductive sheet is interposed between the module case 1, the plurality of LED modules 3, 3 and the constant current portion 2, and the heat from the heat source such as the LED modules 3, 3 is provided via the heat conductive sheet. Since it is efficiently transmitted to the case 1, heat dissipation can be improved, and a high-brightness LED can be used. By using the high-brightness LED, when the light source unit 10 is applied to a product such as a lighting device or a display device, the number of the light source units 10 to be used can be reduced, and the light source unit 10 can be attached and wired. It becomes easy.
- the inside of the module case 1 is filled with a resin 4 such as silicon resin and the plurality of LED modules 3 and 3 and the constant current portion 2 accommodated in the inside of the module case 1 are covered with the resin 4, It can also be used in an environment exposed to rain dew.
- a resin 4 such as silicon resin and the plurality of LED modules 3 and 3 and the constant current portion 2 accommodated in the inside of the module case 1 are covered with the resin 4, It can also be used in an environment exposed to rain dew.
- a plurality of LED modules 3 and 3 are connected in series, and the power supply voltage supplied to the light source unit 10 is 21.2 V obtained by adding the forward voltage of the LED modules 3 and 3 connected in series and the constant current unit 2 And the voltage drop in the electric wire 52 is considered to be 24 V, so that the required amount of current can be reduced and the electric wire is made thinner than when the LED modules 3 and 3 are connected in parallel. can do. When electric wires having the same thickness are used, more light source units 10 can be connected.
- the LED module 3 is configured by connecting a plurality of LEDs 34, 34... In parallel, the LED module 3 can be lit even when one LED 34 breaks down, and the reliability of the light source unit 10 can be improved.
- FIG. 6 is a schematic cross-sectional view of a signboard provided with the light source unit 10 according to the first embodiment.
- FIG. 7 is a schematic side view seen from the arrow VII-VII in FIG.
- the signboards shown in FIGS. 6 and 7 are examples of internally illuminated signboards that display the shape of characters, designs, and the like by arranging a light source on the back surface of the translucent material and illuminating from the back surface.
- the signboard housing 6 is a signboard housing made of metal such as aluminum or stainless steel.
- the signboard housing 6 includes a plate portion 61 formed in an H shape and a peripheral wall 62 erected on the peripheral edge of the plate portion 61.
- a plurality of light source units 10, 10... are arranged on the plate portion 61 of the sign housing 6 so that the adjacent light emitting portions 3 a, 3 a have substantially the same spacing P.
- the light source unit 10 is screwed into screw holes 13 a and 13 a provided in the fixing parts 13 and 13 of the module case 1 and screw holes (not shown) provided in the plate part 61 of the sign housing 6.
- the signboard housing 6 is fixed.
- a grounding wire 51 and a 24 V power source wire 52 are connected, and the light source units 10, 10.
- the center is indicated by a two-dot chain line in the drawing.
- the auxiliary circles are arranged along the H shape so as to contact each other.
- a diffusion plate 63 having the same shape as the plate portion 61 is provided on the opening side of the signboard housing 6.
- the diffusing plate 63 is made of milky white acrylic resin so that the reflectance and the transmittance are substantially the same. Thereby, since sunlight is reflected by the diffusing plate 63, a signboard can be recognized even in bright daytime.
- the height of the peripheral wall 62 is such that the distance L between the diffuser plate 63 and the light source units 10, 10... Is substantially the same as the distance P between the light emitting parts 3 a, 3 a. This is determined in consideration of the following matters. Light from a plurality of light emitting units 3a, 3a,... Overlaps and is recognized by a person as a single surface light source, not as individual point light sources, and emits light so that characters can be clearly displayed on a single light emitting surface. The interval P between the portions 3a, 3a,... Is less than or equal to the interval L (P ⁇ L) between the diffuser plate 63 and the upper surfaces of the light source units 10, 10,. It is desirable.
- the interval P between the light emitting units 3a, 3a In the present embodiment, the interval P between the light emitting units 3a, 3a... And the interval L between the diffusion plate 63 and the light source units 10, 10,.
- the signboard can be optimally designed in consideration of thinning and uniformization of emitted light.
- the interval P between the light emitting units 3a, 3a,... Is set to be equal to or less than the interval L between the diffuser plate 63 and the light source units 10, 10 .... so that the plurality of light emitting units 3a, 3a,. It can be recognized by a person as a single surface light source, and it does not give the person a sense of incongruity, and the shape of characters, pictures, etc. represented by the signboard housing 6 is displayed more clearly on a single light emitting surface. can do.
- a grounding wire 51 and a 24V power wire 52 are connected between the light source units 10, 10,..., And these wires 51, 52 are connected to the diffusion plate 63 and the light source unit. Since it is arranged in the gap with 10, 10..., The signboard can be thinned.
- FIG. 8 and 9 are other arrangement examples of the light source units 10, 10... According to the first embodiment.
- a plurality of light source units 10, 10... are arranged in a signboard housing 6a formed in an A shape so that the adjacent light emitting portions 3a, 3a have substantially the same spacing P as described above.
- An auxiliary circle having a diameter P with the light emitting portions 3a, 3a... As the center is indicated by a two-dot chain line in the drawing.
- the auxiliary circles are arranged along the A shape so as to contact each other. Accordingly, when the light emitting units 3a, 3a,... Are turned on, the letter A is clearly displayed with substantially the same brightness.
- a plurality of light source units 10, 10... are arranged on a sign housing 6 b formed in an S shape so that the adjacent light emitting portions 3 a, 3 a have substantially the same spacing P as described above. It is.
- An auxiliary circle having a diameter P with the light emitting portions 3a, 3a... As the center is indicated by a two-dot chain line in the drawing. As shown in the figure, the auxiliary circles are arranged along the S shape so as to contact each other. Thus, when the light emitting units 3a, 3a,... Are turned on, the letter S is clearly displayed with substantially the same brightness.
- the light source units 3a and 3a are arranged at substantially the same interval with respect to a signboard having a curved shape like a character. 10, 10... Can be arranged and can be clearly displayed with substantially the same brightness.
- FIG. 10 is a schematic plan view of the light source unit 20 according to Embodiment 2 of the present invention.
- FIG. 11 is a schematic cross-sectional view taken along line XI-XI in FIG.
- FIG. 12 is a schematic plan view of the light source unit 20 in a state where the resin is not filled.
- reference numeral 1a denotes a metal module case having excellent thermal conductivity such as aluminum and copper.
- the module case 1 a includes a rectangular plate portion 11, a peripheral wall 12 erected on the periphery of the rectangular plate portion 11, and a plurality of partition plates 14, 14. .
- the partition plates 14, 14... are provided so as to partition each of the plurality of LED modules 3, 3 and the constant current portion 2 as shown in the figure.
- the light source unit 20 is provided with partition plates 14, 14... For partitioning the plurality of LED modules 3, 3 and the constant current portion 2, and resin is applied only to a portion partitioned by the partition plates 14, 14. 4 is filled, the amount of the resin 4 filled to cover the LED modules 3 and 3 and the constant current portion 2 can be reduced.
- FIG. 13 is a schematic plan view of the light source unit 30 according to Embodiment 3 of the present invention. For convenience of explanation, a state where the resin is not filled is shown.
- 1b is a module case made of metal having excellent thermal conductivity such as aluminum and copper.
- the module case 1 b includes a rectangular plate portion 11 and a peripheral wall 12 erected on the periphery of the rectangular plate portion 11.
- a substantially square-shaped fixing portion 13 extending from the approximate center of the short side of the rectangular plate portion 11 in a direction perpendicular to the short side.
- a screw hole 13 a is formed in the fixing portion 13.
- an elongated rectangular fixing portion 15 extending from the approximate center of the short side of the rectangular plate portion 11 in a direction orthogonal to the short side is provided.
- Two screw holes 15a and 15b are formed in the fixing portion 15, respectively.
- the two screw holes 15a and 15b provided in the fixing portion 15 have a distance of 6 ⁇ a between the screw hole 13a of one fixing portion 13 and the screw hole 15a on the side of the other fixing portion 15 adjacent to the module case 1b.
- (a is a variable)
- the distance between the screw hole 13a of one fixing part 13 and the screw hole 15b on the side separated from the module case 1b of the other fixing part 15 is 5 ⁇ a ⁇ (2) 0.5 . It is like that. Since the other configuration is the same as that of the first embodiment shown in FIG. 3, the same reference numerals as those in FIG. 3 are given to the corresponding components, and the detailed description of the configuration is omitted.
- FIG. 14A to 14C are conceptual diagrams for explaining a method of attaching the light source unit 30.
- FIG. 14A or 14C are conceptual diagrams for explaining a method of attaching the light source unit 30.
- FIG. 14A or 14C are provided in a grid pattern at the same pitch a on the fixed surface of a housing of a product such as a lighting device or a display device to which the light source unit 30 is fixed or a fixing plate attached to the housing.
- the light source unit 30 is provided in one fixing portion 13 of the module case 1.
- the screw hole 13a is fixed by screwing a screw into the screw hole 15a on the side close to the module case 1b of the other fixing portion 15.
- FIG. 14A or 14C are conceptual diagrams for explaining a method of attaching the light source unit 30.
- FIG. 14A or 14C are provided in a grid pattern at the same pitch a on the fixed surface of a housing of a product such as a lighting device or a display device to which the light source unit 30 is fixed or
- the light source unit 30 when the light source unit 30 is arranged in a direction that forms an angle of 45 ° with respect to the arrangement of the screw holes, the light source unit 30 has screw holes 13 a provided in one fixing portion 13 of the module case 1.
- the other fixing portion 15 is fixed by screwing it into the screw hole 15b on the side separated from the module case 1b.
- the pitch a of the screw holes is, for example, 20 mm.
- the light source unit 30 By constructing the light source unit 30 and the housing to which the light source unit 30 is attached as described above, the light source unit 30 can be attached at an arbitrary position by changing the angle in increments of 45 °, and the housing of the light source unit 30. Easy to install.
- the interval between the LED modules 3 and 3 is set to 10 cm.
- the present invention is not limited to this. Selected.
- the light source unit is provided with two LED modules.
- the present invention is not limited to this, and three or more LED modules may be provided. In this case, the number of LED modules is desirably an even number.
- a high-brightness LED module is used as a light source.
- the present invention is not limited to this, and a high-brightness LED chip may be used.
- LED is used as a light source, it is not limited to this.
- the light source unit is not limited to the internally illuminated signboard, and a self-luminous signboard, a display device such as a sign
- the present invention can also be applied to lighting devices other than display devices.
- the present invention is not limited to the outdoors and can be used indoors.
- it is modularized and has a flexible layout, it can be suitably used for lighting devices that illuminate products in the showcase, and because it is highly waterproof, it tends to cause water condensation or condensation.
- It can use suitably for the illuminating device installed in a place.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
- Led Devices (AREA)
Abstract
Description
14 仕切り板
2 定電流部
3 LEDモジュール(光源)
4 樹脂
10,20,30 光源ユニット
51 接地用の電線(電源供給用の電線)
52 24V電源用の電線(電源供給用の電線)
6 看板筐体(筐体)
63 拡散板
(実施の形態1)
図1は、本発明の実施の形態1に係る光源ユニット10の模式的平面図である。図2は、図1のII-II線による模式的断面図である。図3は、後述する樹脂が充填されていない状態の光源ユニット10の模式的平面図である。
図10は、本発明の実施の形態2に係る光源ユニット20の模式的平面図である。図11は、図10のXI-XI線による模式的断面図である。図12は、樹脂が充填されていない状態の光源ユニット20の模式的平面図である。
図13は、本発明の実施の形態3に係る光源ユニット30の模式的平面図である。なお、説明の便宜のため、樹脂が充填されていない状態を示している。
Claims (15)
- 複数の光源と、該複数の光源に電流を供給する回路を構成する電子部品とを備える光源ユニットにおいて、前記電子部品は、前記複数の光源の間に配してあることを特徴とする光源ユニット。
- 複数の光源と、該複数の光源に供給される電流を一定にする定電流部を構成する電子部品とを備える光源ユニットにおいて、前記電子部品は、前記複数の光源の間に配してあることを特徴とする光源ユニット。
- 前記複数の光源及び電子部品を支持する支持体を備えており、該支持体は平面を有しており、該平面上に前記複数の光源及び電子部品が並設してあることを特徴とする請求項1または2に記載の光源ユニット。
- 前記電子部品は、電源供給用の電線が接続される接続部を前記複数の光源からの光が出射される側に有していることを特徴とする請求項1から3の何れか一つに記載の光源ユニット。
- 前記複数の光源夫々と前記電子部品との間隔が略同一になるようにしてあることを特徴とする請求項1から4の何れか一つに記載の光源ユニット。
- 前記支持体と前記複数の光源及び/又は電子部品との間に熱伝導シートが介装してあることを特徴とする請求項3から5の何れか一つに記載の光源ユニット。
- 前記支持体は前記複数の光源及び電子部品を内部に収容しており、前記支持体の内部には、前記複数の光源及び電子部品を覆うように樹脂が充填してあることを特徴とする請求項3から6の何れか一つに記載の光源ユニット。
- 前記支持体には、前記複数の光源及び電子部品夫々を仕切る仕切り板が設けてあることを特徴とする請求項7に記載の光源ユニット。
- 前記複数の光源は、直列接続してあることを特徴とする請求項1から8の何れか一つに記載の光源ユニット。
- 前記光源は、複数のLEDを並列接続してなることを特徴とする請求項1から9の何れか一つに記載の光源ユニット。
- 請求項1から10の何れか一つに記載の光源ユニットを備えることを特徴とする照明装置。
- 前記光源ユニットに離隔して対向し、該光源ユニットからの光を拡散する拡散板を備えており、前記光源ユニットは、前記光源と前記拡散板との間隔以下である略同一の間隔にて前記光源が配されるように設けてあることを特徴とする請求項11に記載の照明装置。
- 請求項1から10の何れか一つに記載の光源ユニットを備えることを特徴とする表示装置。
- 前記光源ユニットを収容する筐体を備えており、前記光源ユニットは、前記筐体の形状に沿って、前記光源が略同一の間隔にて配されるように設けてあることを特徴とする請求項13に記載の表示装置。
- 前記光源ユニットに離隔して対向するように前記筐体に設けられ、該光源ユニットからの光を拡散する拡散板を備えており、前記光源間の間隔は、前記光源と前記拡散板との間隔以下になるようにしてあることを特徴とする請求項14に記載の表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020107020712A KR101268277B1 (ko) | 2008-02-19 | 2009-02-13 | 광원 유닛, 조명 장치 및 표시 장치 |
CN2009801048147A CN101946123A (zh) | 2008-02-19 | 2009-02-13 | 光源单元、照明装置及显示装置 |
US12/918,151 US8382326B2 (en) | 2008-02-19 | 2009-02-13 | Light source unit, lighting apparatus and notice bearing apparatus |
EP09712011.7A EP2251593A4 (en) | 2008-02-19 | 2009-02-13 | LIGHT SOURCE UNIT, LIGHTING DEVICE, AND DISPLAY DEVICE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008-037842 | 2008-02-19 | ||
JP2008037842A JP4794587B2 (ja) | 2008-02-19 | 2008-02-19 | 光源ユニット、照明装置及び表示装置 |
Publications (1)
Publication Number | Publication Date |
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WO2009104518A1 true WO2009104518A1 (ja) | 2009-08-27 |
Family
ID=40985400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/052375 WO2009104518A1 (ja) | 2008-02-19 | 2009-02-13 | 光源ユニット、照明装置及び表示装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8382326B2 (ja) |
EP (1) | EP2251593A4 (ja) |
JP (1) | JP4794587B2 (ja) |
KR (1) | KR101268277B1 (ja) |
CN (1) | CN101946123A (ja) |
WO (1) | WO2009104518A1 (ja) |
Cited By (2)
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WO2011040633A1 (ja) * | 2009-09-30 | 2011-04-07 | 三洋電機株式会社 | 発光モジュール |
JP2015156312A (ja) * | 2014-02-20 | 2015-08-27 | パナソニックIpマネジメント株式会社 | Led照明器具 |
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JP5515931B2 (ja) * | 2009-04-24 | 2014-06-11 | 東芝ライテック株式会社 | 発光装置及び照明装置 |
JP5375552B2 (ja) * | 2009-11-24 | 2013-12-25 | 東芝ライテック株式会社 | 発光装置及びこれを備えた照明器具 |
JP4681071B1 (ja) | 2009-12-17 | 2011-05-11 | 株式会社スズデン | 照明器具 |
KR20100043168A (ko) * | 2010-04-09 | 2010-04-28 | 엔엘티테크주식회사 | 백색광 엘이디를 이용한 조명기구 |
JP2011233356A (ja) * | 2010-04-27 | 2011-11-17 | Sharp Corp | 光源モジュール、表示装置及び照明装置 |
US9634211B2 (en) * | 2012-09-26 | 2017-04-25 | Panasonic Intellectual Property Management Co., Ltd. | Light-emitting module |
WO2015117856A1 (en) * | 2014-02-10 | 2015-08-13 | Koninklijke Philips N.V. | Comfortable distributed led lighting |
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Also Published As
Publication number | Publication date |
---|---|
EP2251593A1 (en) | 2010-11-17 |
EP2251593A4 (en) | 2013-11-13 |
CN101946123A (zh) | 2011-01-12 |
JP4794587B2 (ja) | 2011-10-19 |
US20100327752A1 (en) | 2010-12-30 |
US8382326B2 (en) | 2013-02-26 |
KR20100116214A (ko) | 2010-10-29 |
KR101268277B1 (ko) | 2013-06-04 |
JP2009198597A (ja) | 2009-09-03 |
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