WO2006035793A1 - 表示灯 - Google Patents
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- Publication number
- WO2006035793A1 WO2006035793A1 PCT/JP2005/017795 JP2005017795W WO2006035793A1 WO 2006035793 A1 WO2006035793 A1 WO 2006035793A1 JP 2005017795 W JP2005017795 W JP 2005017795W WO 2006035793 A1 WO2006035793 A1 WO 2006035793A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- indicator lamp
- light source
- diffusion
- led light
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
-
- 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 relates to an indicator lamp installed in various machines or production lines installed as production equipment in a factory, for example.
- Incandescent lamps have conventionally been used as the light source for such indicator lamps. Recently, the purpose of reducing power consumption is to reduce the labor required for maintenance and management. As a result, indicator lights using LEDs as light sources have been put into practical use. An example is shown in FIG.
- An indicator lamp 201 shown in FIG. 24 includes a main body 202, an LED light source (LED module) 203 held in the center of the main body 202, a cover lens 205 covering the front side of the LED light source 203, and the like. ing.
- This indicator lamp 201 has a structure in which the main body 202 is fixed to an operation panel or the like by using a tightening nut 206.
- the LED light source 203 is turned on in the mounted state, the operating state of the machinery and production It is possible to notify workers etc. of line abnormalities.
- an LED module in which an LED chip is mounted on the module front surface 231 is used as shown in FIG.
- the light emission of the LED has a characteristic that the luminance is highest in the central portion and low in the lateral portion (lateral direction) when viewed from the front (see FIG. 26). For this reason, in the indicator lamp using the LED light source 203 as shown in Fig. 25, the visibility is good when the indicator lamp is viewed from the front. When the indicator lamp is viewed from the side, There is a problem of poor visibility due to low brightness in the horizontal direction.
- FIG. Power that can be considered to improve the visibility by increasing the brightness of the indicator lamp to the side using the LED module 300 with 303 installed.In this case, multiple LED light sources are required, which increases costs. .
- an indicator lamp that takes into account the light distribution characteristics
- a plurality of LED lamps are arranged in a cover lens (globe), and a conical half mirror is arranged in front of the plurality of LED lamps.
- An indicator lamp having a structure in which the luminance of the side (lateral direction) of the indicator lamp is increased has been proposed (see, for example, Patent Document 1).
- the cost increases.
- Patent Document 1 JP 2002-260404 A
- the present invention has been made in view of such circumstances, and provides an indicator lamp capable of ensuring a wide viewing angle by increasing the luminance to the side without increasing the number of LED light sources. For the purpose.
- an indicator lamp of the present invention is an indicator lamp that includes an LED light source and a main body that holds the LED light source, and is used by being attached to a panel or a wall surface.
- a diffusing member is provided on the front side of the light source, and the diffusing member includes a plurality of light guides that are centered on an axis perpendicular to the mounting surface of the indicator lamp and extend radially toward the central force side.
- each of the light guides is characterized by an inclined surface that guides light incident on each light guide from the LED light sources to the side of the indicator lamp. It is done.
- the “side” means a direction substantially parallel to the mounting surface of the indicator lamp.
- the light of the LED light source power is incident on each light guide of the diffusing member.
- the reflected light is reflected to the side by the inclined surface, and the reflected light can increase the luminance to the side of the indicator lamp.
- the light that does not enter the light guide of the diffusing member that is, the directional light between the radially arranged light guides passes through the light guides and forward (front side). Therefore, the brightness to the front of the indicator lamp can be secured. Therefore, it is possible to realize an indicator lamp having a wide field of view and good visibility.
- it is not necessary to arrange a side-specific LED light source that emits light to the side of the indicator light For example, by simply placing the LED light source in the center of the indicator light, the brightness to the side of the indicator light can be increased. Can do.
- inclined surfaces for converging light from the LED light source are respectively formed on the incident side of each light guide of the diffusing member.
- irregularities are formed on the light emission surface (side surface of the light guide) of each light guide of the diffusing member.
- the indicator lamp of the present invention it is preferable to provide a circular dome-shaped force bar lens that covers the front side of the LED light source.
- the diffusing member is accommodated in the cover lens, and a part of the light of the LED light source power is applied to the side corresponding to the side of the diffusing member on the inner peripheral surface of the cover lens.
- a side diffusion region that diffuses obliquely forward may be formed.
- a plurality of diffusion longitudinal lenses (substantially semicircular in cross section) extending in parallel with an axis perpendicular to the mounting surface of the indicator lamp are fixed along the inner peripheral surface of the cover lens.
- the front end force of each diffusion vertical lens is formed with a diffusion gradient lens (substantially semicircular cross section) extending inward and forward.
- the diffusion longitudinal lens and the diffusion inclined lens are formed in the side diffusion region, the light diffused laterally by each light guide of the diffusion member (one of the light that has passed through the diffusion member).
- Such a diffusion longitudinal lens and a diffusion tilt lens may be provided in a plurality of stages in the front-rear direction of the side diffusion region.
- the indicator lamp of the present invention a part of the light from the LED light source is displayed on the inner peripheral surface of the cover lens in front of the side diffusion region (in front of the diffusion member). It is also possible to form an inclined portion diffusion region that diffuses obliquely forward and forward from the side of the lamp.
- a plurality of diffusion longitudinal lenses (substantially semicircular in cross section) extending in parallel with an axis perpendicular to the mounting surface of the indicator lamp, and an axis perpendicular to the mounting surface of the indicator lamp
- a plurality of diffusing inclined lenses (substantially semicircular in cross section) extending obliquely inward are formed along the inner peripheral surface of the cover lens at a predetermined pitch and spaced apart from each other.
- Such a diffusion longitudinal lens and a diffusion inclination lens may be provided in a plurality of stages in the front-rear direction of the inclined portion diffusion region.
- the diffusion member having the plurality of light guides for guiding the light from the LED light source to the side (direction substantially parallel to the mounting surface of the indicator lamp) is provided. Due to the diffusion effect, the lateral brightness of the indicator lamp can be increased. In addition, it is possible to provide an indicator lamp with a wide viewing angle and good visibility at a low cost without increasing the number of LED light sources.
- FIG. 1 is an exploded perspective view showing an example of an indicator lamp of the present invention.
- FIG. 2 is a plan view showing the indicator lamp of FIG. 1 in use.
- FIG. 3 is a side view showing the indicator lamp of FIG. 1 in use.
- FIG. 4 is a longitudinal sectional view of an essential part of the indicator lamp of FIG.
- FIG. 5 is a perspective view of a diffusing member used in the indicator lamp of FIG. [FIG. 6]
- FIG. 6 is a front view (A), a side view (B) and a rear view of the diffusion member used in the indicator lamp of FIG.
- FIG. 7 is a cross-sectional view taken along line XI-XI in FIG.
- FIG. 8 is a cross-sectional view taken along line X 2 -X 2 of FIG.
- FIG. 9 (A) is a sectional view of the diffusing member shown in FIG. 7, and is an explanatory view of the action of the diffusing member.
- FIG. 9B is a sectional view of the diffusing member shown in FIG. 8, and is an explanatory view of the action of the diffusing member.
- FIG. 10 is a view showing a front lens (A), a side view (B), and a rear view (C) of the cover lens used in the indicator lamp of FIG.
- FIG. 11 is a cross-sectional view taken along line Y1-Y1 of FIG.
- FIG. 12 is a cross-sectional view taken along line Y2-Y2 of FIG.
- FIG. 13 is a cross-sectional view taken along line Y3-Y3 of FIG.
- FIG. 14 is a detailed view of the Z1 part of FIG.
- FIG. 15 is a detailed view of Z2 part of FIG.
- FIG. 16 is a detailed view of Z3 part of FIG.
- FIG. 17 is a detailed view of the Z4 part of FIG.
- FIG. 18 is a cross-sectional view taken along line Y4-Y4 of FIG.
- FIG. 19 is a sectional view taken along line Y5-Y5 of FIG.
- FIG. 20 is a cross-sectional view taken along line Y6-Y6 of FIG.
- FIG. 21 is a sectional view taken along line Y7—Y7 of FIG.
- FIG. 22 is an end view taken along line Y1-Y1 of FIG.
- FIG. 23 is an end view taken along line Y2-Y2 of FIG.
- FIG. 24 is a half sectional view showing an example of a conventional indicator lamp.
- FIG. 25 is a side view of an LED light source used for the indicator lamp of FIG. 24.
- FIG. 26 is a diagram showing the light distribution characteristics of an LED.
- FIG. 27 is a diagram schematically showing a method for increasing the lateral luminance of the indicator lamp.
- FIG. 1 is an exploded perspective view showing an example of an indicator lamp of the present invention.
- 2 and 3 are a plan view and a side view, respectively, showing the indicator lamp of FIG. 1 in use.
- Fig. 4 is a longitudinal sectional view of the main part of the indicator lamp of Fig. 1.
- the indicator lamp 1 in this example includes a main body 2, an LED light source 3, a diffusing member 4, a cover lens 5, and the like.
- an LED module having the same structure as that shown in FIG.
- the main body 2 is formed with a disk-shaped rear cover 21 and a socket portion 23 to which the LED light source 3 is attached, and the rear surface of the rear cover 21 is a mounting surface 21a of the indicator lamp 1.
- a side wall 24 protruding forward is formed on the periphery of the back cover 21.
- a male screw 24 a is formed on the outer peripheral surface of the side wall 24.
- a cylindrical boss 22 is formed at the center of the front side of the back cover 21. Locking ridges (parts of male screws) 22a, 22a are formed on the outer peripheral surface of the boss 22. ing.
- the socket part 23 protrudes from the center part of the back cover 21 (the center part of the indicator lamp 1) to the back side. By attaching the LED light source 3 to the socket part 23 also with the front side force, the LED light source 3 is attached. It can be held in the center of the indicator lamp 1.
- the socket portion 23 includes a front-side cylindrical portion 23a and a rear-side terminal portion 23b, and a male screw 23c is formed on the outer peripheral surface of the cylindrical portion 23a.
- the above indicator lamp 1 is configured so that the socket portion 23 (with the tightening nut 6 removed) of the main body 2 is inserted into the mounting hole 101 of the panel 100. ⁇ from the front With the mounting surface 21a of the back cover 21 in contact with the surface of the panel 100 via a packing (not shown), the tightening nut 6 is connected to the male screw 23c of the body 2 from the back side of the panel 100.
- the entire indicator lamp 1 can be fixed to the panel 100 by screwing in and tightening.
- the diffusing member 4 used in the indicator lamp 1 of this example will be described with reference to FIGS.
- the diffusing member 4 is a molded product of translucent resin (for example, transparent polycarbonate), and includes a cylindrical portion 41 and a plurality (12) of light guides positioned in front of the cylindrical portion 41. 42 ⁇ 42 are formed as one body.
- the plurality of light guides 42 ⁇ 42 extend radially toward the side of the central axial force of the cylindrical portion 41, and the central portion of these light guides 42 ⁇ 42 (center portion of the diffusion member 4)
- the front through hole 43 is provided in the front. Note that it is not always necessary to provide the through hole 43 at the center of the diffusing member 4.
- the center of the diffusing member 4 may be made of translucent grease so that light from the LED light source 3 can pass therethrough. ,.
- female screws 41a are formed in a distributed manner along the circumferential direction.
- the female screws 41a of the cylindrical portion 41 are provided on the main body 2.
- the diffusion member 4 can be fixed to the main body 2 by screwing it into the locking ridges 22a, 22a of the boss 22 (see FIG. 4), and in the fixed state, the center of the cylindrical portion 41 of the diffusion member 4,
- the center of body 2 (the center of LED light source 3) matches.
- irregularities 41 b are formed on the outer peripheral surface of the cylindrical portion 41 of the diffusing member 4.
- Each light guide 42 is formed with a converging inclined surface 42a that bundles light from the LED light source 3 at the end (light incident side) close to the LED light source 3 and on the side. Furthermore, the light focused by the converging inclined surface 42a is applied to the side of the indicator lamp 1 (in a direction substantially parallel to the mounting surface 21a of the main body 2) at the end that is far from the LED light source 3.
- a reflective inclined surface 42b is formed for reflection toward the screen. Further, on the side surface (light emitting surface) 42c of each light guide 42, an uneven surface 42d for diffusing light from the reflective inclined surface 42b is formed.
- the inclination angle of the focusing inclined surface 42a is not particularly limited as long as the light from the LED light source 3 can be converged and guided to the reflecting inclined surface 42b.
- the inclination of the reflective inclined surface 42b The angle is not particularly limited as long as the angle allows the light from the focusing inclined surface 42a to be reflected sideways.
- the inclination angles of the focusing inclined surface 42a and the reflecting inclined surface 42b are determined in consideration of the positional relationship between the LED light source 3 and the inclined surfaces 42a and 42b.
- the diffusing member 4 having the above structure is arranged on the front side of the LED light source 3, the directional light of the light from the LED light source 3 is directed to each light guide 42 of the diffusing member 4. As shown in FIG. 9 (A), the light is focused by the focusing inclined surface 42a of each light guide 42, and then travels through the light guide 42 toward the reflecting inclined surface 42b. The light that has reached the reflecting inclined surface 42b is reflected toward the side of the indicator lamp 1 by the reflecting inclined surface 42b, and the luminance toward the side of the indicator lamp 1 is increased by the reflected light.
- the light that does not enter the light guides 42 of the diffusing member 4 that is, the central through-hole 43 and the light guide of the diffusing member 4. Since the light traveling between the light bodies 42 and 42 passes through the through hole 43 and the light guides 42 and 42 and is emitted to the front of the diffusing member 4, the brightness to the front of the indicator lamp 1 can be secured. it can.
- the diffusing member 4 by disposing the diffusing member 4 on the front side of the LED light source 3, it is possible to realize the indicator lamp 1 having a wide field of view and good visibility due to the diffusing effect of the diffusing member 4. In this way, the diffusion member 4 exerts the role of improving the lateral brightness and widening the field of view, so only the LED light source 3 arranged at the center of the indicator light 1 without using a plurality of LED light sources can be used. It becomes possible to increase the luminance to the side of 1.
- the reflective inclined surface 42b since the unevenness 42d for diffusing light from the reflective inclined surface 42b is formed on the side surface 42c of each light guide 42 of the diffusing member 4, the reflective inclined surface 42b The light reflected to the side can be further diffused, and it is possible to make the luminance distribution to the side of the indicator lamp 1 uniform.
- the irregularities 41b are also formed on the outer peripheral surface of the cylindrical portion 41 on the rear side of the diffusing member 4, the light incident on the cylindrical portion 41 from the LED light source 3 can be diffused to the side. The brightness to the side of the lamp 1 can be further increased.
- the cover lens 5 used for the indicator lamp 1 in this example will be described with reference to FIGS.
- the cover lens 5 is made of translucent resin (for example, polycarbonate (colored or transparent)) in a circle. It is a resin molded product molded into a dome shape.
- female screws 5a are discretely formed along the circumferential direction. These female screws 5a are screwed into the male screws 24a on the periphery of the back cover 21 of the main body 2.
- the cover lens 5 can be attached to the main body 2 (see FIG. 4).
- the front side of the LED light source 3 is covered with the cover lens 5, and the diffusing member 4 is accommodated in the cover lens 5.
- a packing 7 is sandwiched between the mating surfaces of the cover lens 5 and the main body 2, and waterproofing between the cover lens 5 and the main body 2 is ensured.
- a side diffusion region 51, an inclined portion diffusion region 52, and a front diffusion region 53 are formed on the inner surface of the cover lens 5, as shown in FIGS. 11 to 13, a side diffusion region 51, an inclined portion diffusion region 52, and a front diffusion region 53 are formed.
- the side diffusion region 51 is formed in a portion (a portion corresponding to the side of the diffusion member 4) up to a position where the rear end portion force of the cover lens 5 is slightly forward of the diffusion member 4.
- a plurality of diffusion vertical lenses (substantially semicircular) 51a ′ ′ 51a extending along the axis perpendicular to the mounting surface 21a of the indicator lamp 1 are provided along the inner peripheral surface of the cover lens 5.
- a diffusion tilt lens (substantially semicircular cross section) 51b ′ ′ 51b is formed which is formed at a constant pitch and extends inward from the front end of each diffusion vertical lens 51a.
- the diffusion longitudinal lens 51a ′ ′ 51a and the diffusion tilt lens 51b ′ ′ 51b are formed in two sets (two steps) in the front-rear direction of the side diffusion region 51, and the two sets A single-stage diffusion longitudinal lens 51a ′ ′ 51a is formed on the front side of the lens group.
- each light guide body of the diffusion member 4 is provided.
- a part of the light diffused to the side by 42 can be further diffused by the diffusion vertical lens 51a.
- a part of the light from each light guide 42 of the diffusing member 4 can be diffused obliquely forward by the diffusion tilting lens 5 lb.
- the viewing angle of the entire lamp 1 can be expanded.
- the front diffusion region 53 is formed in a portion (a portion facing the front of the diffusing member 4) located in the center as viewed from the front.
- the front diffusion region 53 includes a plurality of rings with different diameters.
- Shaped lenses (substantially semicircular) 53a, 53b, 53c are formed on concentric circles, and the light that has passed through the diffusing member 4 can be diffused forward, among the light of the LED light source 3 that is strong.
- the inclined portion diffusion region 52 is provided between the front diffusion region 53 and the side diffusion region 51.
- a plurality of diffusion longitudinal lenses (substantially semicircular) 52a ′ ′ 52a extending in parallel with an axis perpendicular to the mounting surface 21a of the indicator lamp 1 and the indicator lamp 1 Mounting surface 2
- a plurality of diffusing inclined lenses inclined inwardly with respect to an axis perpendicular to la (substantially semicircular) 52b '' 52b and force A constant pitch along the inner peripheral surface of the cover lens 5 and They are formed at a predetermined interval from each other.
- step portions 52c ′ ′ 52c are provided in the front-rear direction of the inclined portion diffusion region 52, and each of the step portions 52c has a plurality of diffusion longitudinal lenses 52a ′ ′ 52a and a plurality of diffusion portions.
- An inclined lens 52b "52b is formed.
- a ring-shaped lens 52d is formed in the vicinity of the boundary with the front diffusion region 53.
- the diffusion vertical lens 52a, the diffusion inclined lens 52b, and the ring-shaped lens 52d are formed in the inclined portion diffusion region 52, the sectional view of FIG. 21 (the sectional view taken along the line Y7—Y7 of FIG. 11).
- the diffusion vertical lens 52 a and the diffusion tilt lens 52 b can diffuse a part of the light from the LED light source 3 that has passed through the diffusion member 4 to the side of the indicator lamp 1. The visibility to the side of the indicator lamp 1 can be further enhanced.
- the end view of FIG. 22 end view of line Y1-Y1 in FIG. 10
- the end view of FIG. 23 end view of line Y2-Y2 in FIG.
- a part of the light that has passed through the diffusing member 4 Can be diffused obliquely forward and forward (front side), so that the visibility of the indicator lamp 1 can be ensured obliquely forward, and the viewing angle of the indicator lamp 1 can be further widened.
- the present invention is installed, for example, in the vicinity of machinery in order to inform surrounding workers and the like of the operating status or maintenance timing of various machinery installed as production equipment in a factory or the like. Effectively used to widen the viewing angle by ensuring visibility in all directions (three-dimensional direction) in indicator lamps and indicator lamps installed to ensure the safety of workers in production lines can do.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
- Led Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-284685 | 2004-09-29 | ||
JP2004284685A JP4615949B2 (ja) | 2004-09-29 | 2004-09-29 | 表示灯 |
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WO2006035793A1 true WO2006035793A1 (ja) | 2006-04-06 |
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PCT/JP2005/017795 WO2006035793A1 (ja) | 2004-09-29 | 2005-09-28 | 表示灯 |
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WO (1) | WO2006035793A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012514842A (ja) * | 2009-01-09 | 2012-06-28 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Led、光ガイド及びリフレクタを備える光源 |
CN108288440A (zh) * | 2018-02-05 | 2018-07-17 | 广州慧玥文化传播有限公司 | 基于物理插值的高分辨率led屏幕 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5390973B2 (ja) * | 2009-07-21 | 2014-01-15 | 株式会社バッファロー | 照明装置、照明方法、及び、照明装置を備えた外部記憶装置 |
KR101026669B1 (ko) | 2009-11-18 | 2011-04-06 | 김남호 | 집광 효율 및 열방출 효율이 향상된 led 조명 기구 |
JP5985951B2 (ja) * | 2012-10-04 | 2016-09-06 | Idec株式会社 | パネル取付用機器 |
JP6182388B2 (ja) * | 2013-08-07 | 2017-08-16 | 能美防災株式会社 | 表示灯 |
Citations (3)
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JPS6132483A (ja) * | 1984-07-24 | 1986-02-15 | Kimura Denki Kk | Ledを用いた球状発光体 |
JPH0525751U (ja) * | 1991-09-12 | 1993-04-02 | 昌弘 奥村 | 発光ダイオード用光源キヤツプ |
JPH0725016U (ja) * | 1993-10-13 | 1995-05-12 | 株式会社キャットアイ | 工事灯 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003016804A (ja) * | 2001-06-27 | 2003-01-17 | Nichia Chem Ind Ltd | Led表示灯 |
JP4754126B2 (ja) * | 2001-09-18 | 2011-08-24 | ライツ・アドバンスト・テクノロジー株式会社 | 導光部材および標識灯 |
-
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- 2004-09-29 JP JP2004284685A patent/JP4615949B2/ja active Active
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- 2005-09-28 WO PCT/JP2005/017795 patent/WO2006035793A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6132483A (ja) * | 1984-07-24 | 1986-02-15 | Kimura Denki Kk | Ledを用いた球状発光体 |
JPH0525751U (ja) * | 1991-09-12 | 1993-04-02 | 昌弘 奥村 | 発光ダイオード用光源キヤツプ |
JPH0725016U (ja) * | 1993-10-13 | 1995-05-12 | 株式会社キャットアイ | 工事灯 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012514842A (ja) * | 2009-01-09 | 2012-06-28 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Led、光ガイド及びリフレクタを備える光源 |
CN108288440A (zh) * | 2018-02-05 | 2018-07-17 | 广州慧玥文化传播有限公司 | 基于物理插值的高分辨率led屏幕 |
Also Published As
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JP2006100124A (ja) | 2006-04-13 |
JP4615949B2 (ja) | 2011-01-19 |
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