JP2917996B2 - lighting equipment - Google Patents
lighting equipmentInfo
- Publication number
- JP2917996B2 JP2917996B2 JP1156039A JP15603989A JP2917996B2 JP 2917996 B2 JP2917996 B2 JP 2917996B2 JP 1156039 A JP1156039 A JP 1156039A JP 15603989 A JP15603989 A JP 15603989A JP 2917996 B2 JP2917996 B2 JP 2917996B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- control means
- light control
- reflected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
本発明は、制光手段を有する照明器具に関する。 The present invention relates to a lighting fixture having light control means.
従来、この種の照明器具は、例えば、第５図に示され
るように、細長光源を収納した本体の投光開口に格子状
のルーバを設けていて、光源からの遮光角θを約30度と
し、VDT画面に対する光源の写り込みを防止するように
している。これによって直接視野に入る光源の眩しさが
減り、目の負担が軽減できるものである。 ところで、このようなルーバは、光源の長手方向に沿
う方向の第１の複数のルーバ片と、光源の投光方向に向
かって突の楔状に形成され、第１のルーバ片と交差する
方向に設けられた第２の複数のルーバ片とを有してい
る。 そして、第５図に示すように、この光源から水平面内
において斜め方向に投射された光は、第２のルーバ片に
おける閉塞した光源側の面によって反射する。すなわ
ち、光源の光は、一旦、第２のルーバ片の光源側の面に
よって反射し、この反射光が一方の第１のルーバ片の肩
部付近に当たって反射する。さらに、この反射光が他方
の第１のルーバ片に反射して外部に投射される。 そこで、このような反射光を抑制するために、特開昭
60−205903号公報（従来例１）に開示されているよう
に、２つの傾斜した遮光板を器具本体に配設している。
この遮光板は、光源の中央の垂直縦断面に対して対称的
に設けられ、遮光板の上面は光源の下方から出て水平に
対して遮光角にほぼ等しい傾斜角で水平面に対して傾い
て、互いに向い合って上方に伸びている。 また、この遮光板の下縁が上面と平行に伸びるように
形成され、幅広の遮光板において生じるような光損失が
避けられるというものである。さらに、この遮光板の側
面は、全面凹面状に形成されているものである。 なお、上述したような遮光板の下縁について、平坦に
形成されている照明器具は、例えば実開昭56−130206号
公報（従来例２）および特開昭61−16404号公報（従来
例３）に開示されている。Conventionally, as shown in FIG. 5, this type of luminaire has a lattice-shaped louver provided at a light emitting opening of a main body containing an elongated light source, and a light shielding angle θ from the light source is set to about 30 degrees. The light source is prevented from being reflected on the VDT screen. Thereby, the glare of the light source directly entering the visual field is reduced, and the burden on the eyes can be reduced. By the way, such a louver is formed in a first plurality of louver pieces in a direction along the longitudinal direction of the light source, and in a wedge shape protruding toward the light emitting direction of the light source, and is formed in a direction crossing the first louver piece. And a second plurality of louver pieces provided. Then, as shown in FIG. 5, the light projected obliquely in the horizontal plane from this light source is reflected by the closed light source side surface of the second louver piece. That is, the light of the light source is once reflected by the surface of the second louver piece on the light source side, and this reflected light hits near the shoulder of one of the first louver pieces and is reflected. Further, the reflected light is reflected by the other first louver piece and projected outside. In order to suppress such reflected light, Japanese Patent Application Laid-Open
As disclosed in Japanese Unexamined Patent Publication No. 60-205903 (conventional example 1), two inclined light-shielding plates are disposed on the instrument body.
This light-shielding plate is provided symmetrically with respect to the vertical vertical section at the center of the light source, and the upper surface of the light-shielding plate emerges from below the light source and is inclined with respect to the horizontal plane at an inclination angle substantially equal to the light-shielding angle. , Extending upwards facing each other. Further, the lower edge of the light-shielding plate is formed so as to extend in parallel with the upper surface, so that light loss as occurs in a wide light-shielding plate can be avoided. Further, the side surface of the light-shielding plate is formed to be entirely concave. The above-described lighting fixture having the lower edge of the light-shielding plate formed flat is disclosed in, for example, Japanese Utility Model Laid-Open No. 56-130206 (Conventional Example 2) and Japanese Patent Laid-Open No. 61-16404 (Conventional Example 3). ).
第５図に示す照明器具では、上述した投射光は、遮光
角θが30度より浅くなり、例えばVDTに対して器具内に
設けた光源の映り込みを防止することができない問題が
ある。また、投射光の他に第１のルーバ片の中間部付近
に光源が映り、これが30度以下の方向から視認され、こ
の点も同様にVDTに対する光源の映り込みを除去できな
いという問題もある。 また、上述した従来例１では、遮光板が上面および下
縁とも傾斜して幅狭に形成されているので、斜め下方向
から照明器具を見た際に、遮光板下縁の傾斜している切
り欠き部から光源が直接見えるようになり、眩しさを低
減することができない場合もある。 さらに、上述したように遮光板の側面、全面連続した
凹面状の反射面に形成されているので、遮光板の反射光
が30度以下の方向から視認され、VDTに対する光源の映
り込みを除去できないという問題が発生することがあ
る。 本発明は、光源からの光が遮光角以下になることを抑
制して、眩しさを低減し得る照明器具を提供することを
目的とする。In the lighting device shown in FIG. 5, the above-mentioned projection light has a problem that the light shielding angle θ is shallower than 30 degrees, and for example, it is not possible to prevent the reflection of a light source provided in the device on the VDT. Further, in addition to the projection light, a light source appears near the middle portion of the first louver piece, which is visually recognized from a direction of 30 degrees or less. This also has a problem that the reflection of the light source on the VDT cannot be removed. Further, in the above-described conventional example 1, since the light-shielding plate is formed to be narrow by being inclined at both the upper surface and the lower edge, the lower edge of the light-shielding plate is inclined when the lighting fixture is viewed obliquely from below. In some cases, the light source becomes directly visible from the cutout portion, and the glare cannot be reduced. Further, as described above, since the side surface of the light-shielding plate is formed on the concave reflection surface that is continuous over the entire surface, the reflected light of the light-shielding plate is visually recognized from a direction of 30 degrees or less, and the reflection of the light source on the VDT cannot be removed. Problem may occur. An object of the present invention is to provide a lighting device that can reduce glare by suppressing light from a light source from becoming a light-shielding angle or less.
請求項１の発明は、下面に開口を有する器具本体と；
器具本体内に配設される管形光源と；下端部が器具本体
の開口端近傍に位置されるように、管形光源の軸方向に
沿って配設された第１の制光手段と；器具本体の開口端
側に位置する平坦な下端部を有し、かつ断面がほぼ楔状
に形成されてなる主要部および管形光源側に設けられ、
前記第１の制光手段の遮光角とほぼ同一となるような角
度をもって傾斜する傾斜面および傾斜面と前記主要部と
を接続するほぼ垂直な立ち上がり面を含んでなる両側部
を有し、管形光源の軸と直交するように配設された複数
の第２の制光手段と；を具備していることを特徴とす
る。 請求項２の発明は、請求項１記載の発明において、第
２の制光手段の傾斜面は、立ち上がり面を折り曲げて形
成されていることを特徴とする。 請求項１の発明によると、光源から放射された光は、
例えば第２の制光手段の両側部の傾斜面によって反射さ
れて上方に向かい、第１の制光手段の上端部によって反
射されるとともに、投光開口面と略平行に向かい、さら
に他方の第１の制光手段の上端部によって反射し、この
反射光は下方に向かうので、第２の制光手段の光源側の
面による反射光が第１の制光手段によって遮光角以下と
なるのを抑制できる。また、第２の制光手段の立ち上が
り面および下端部は、光源からの光が遮光角以下になる
ことを抑制するので、斜め下方向から照明器具を見た際
に、眩しさを低減することができる。 請求項２の発明によると、第２の制光手段の傾斜面
は、立ち上がり面を折り曲げて反射面にしているので、
剛性が増し、第２の制光手段の強度が向上する。The invention according to claim 1 includes a device main body having an opening on a lower surface;
A tube-shaped light source disposed in the apparatus main body; first light control means disposed along an axial direction of the tube-shaped light source such that a lower end portion is located near an opening end of the apparatus main body; It has a flat lower end located on the open end side of the appliance body, and is provided on the main part and the tube-shaped light source side, the cross section of which is formed substantially in a wedge shape,
A tube having an inclined surface inclined at an angle substantially equal to the light blocking angle of the first light control means, and both side portions including a substantially vertical rising surface connecting the inclined surface and the main portion; And a plurality of second light control means disposed so as to be orthogonal to the axis of the shaped light source. According to a second aspect of the present invention, in the first aspect, the inclined surface of the second light control means is formed by bending a rising surface. According to the invention of claim 1, the light emitted from the light source is:
For example, the light is reflected by the inclined surfaces on both sides of the second light control means and goes upward, is reflected by the upper end of the first light control means, and goes substantially parallel to the light projection opening surface, and further the other light control means Since the light is reflected by the upper end portion of the first light control means and this reflected light goes downward, it is necessary that the light reflected by the light source side surface of the second light control means be less than the light blocking angle by the first light control means. Can be suppressed. In addition, the rising surface and the lower end of the second light control unit suppress the light from the light source from being smaller than the light-shielding angle, so that glare can be reduced when the lighting apparatus is viewed obliquely from below. Can be. According to the second aspect of the present invention, the inclined surface of the second light control means is formed by bending the rising surface to be a reflecting surface.
The rigidity is increased, and the strength of the second light control means is improved.
以下、本発明の一実施の形態を示す照明器具について
第１図ないし第４図を参照して説明する。 第１図は本発明の一実施の形態を示す照明器具の横断
面図、第２図は同じく縦断面図、第３図は同じく第２の
制光手段の要部傾斜図および第４図は同じく第２の制光
手段の底面図である。 図において、等号１は投光開口２を有する器具本体、
３はこの器具本体１に収納された細長の管形光源、４は
投光開口２に設けられた制光手段である格子状のルーバ
である。このルーバ４は、光源３の長手方向に沿う方向
の第１の制光手段５である複数の第１のルーバ片と、光
源３の投光方向に向かって突の楔状に形成された主要部
を有し、第１のルーバ片５と交差する方向に設けられた
第２の制光手段６である複数の第２のルーバ片とを有し
ている。 そして、第２のルーバ片６は光源３側の面を閉塞して
反射面にしているとともに、上端に設けられ光源と対向
するように形成された対向面である最下点、この最下点
の両側に設けられ上端が上記第１のルーバ片の遮光角と
ほぼ同一となるような角度をもって傾斜された傾斜面お
よび傾斜面と前記主要部とを接続するほぼ垂直な立ち上
がり面を含んでなる両側部、および器具本体１の開口端
近傍に位置する平坦な下端部を有してなり、光源３の軸
と直交するように配置されている。 なお、本実施の形態では、細長の光源３は、例えば、
けい光ランプである。他に片口金形けい光ランプ、ハロ
ゲンランプ等であってもよい。また、符号11はソケット
であり、照明器具は２灯用である。したがって、第２の
ルーバ片は２本のランプのそれぞれに対して設けている
とともに、一体化して単一の部材として形成されてい
る。 次に、本実施の形態の作用を説明する。第２のルーバ
片６の光源３側の面の両側部７を光源３を挟むように傾
斜して立ち上がらせ、この立ち上がり傾斜角度を光源３
の第１のルーバー片５による遮光角度と略同じ、例えば
30度にしている。 したがって、光源３を点灯すると、光源３から出た光
は第２のルーバ片６の側部７の面によって反射されて上
方に向かい、第１のルーバー片５の上端部によって反射
するとともに、投光開口２面と略平行に向かい、さら
に、他方の第１のルーバー片５上端部によって反射さ
れ、この反射光は下方に向かう。これによって、第２の
ルーバ片６の光源３側の面による反射光が第１のルーバ
ー片５による遮光角以下となることが抑制される。ま
た、第１のルーバ片５の中間部付近に対して光源３との
間に第２のルーバ片６の側部７の立ち上がり面が介存し
ている。このため斜め方向から器具を見た際に、点灯状
態の光源３の光は側部７の立ち上がり面によって遮蔽さ
れて第１のルーバー５の中間部に映って見えるようなこ
とがない。したがって、中間部によるまぶしさも防止す
ることができる。Hereinafter, a lighting device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view of a lighting apparatus showing an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of the same, FIG. 3 is a perspective view of a main part of the second light control means, and FIG. It is a bottom view of a 2nd light control means similarly. In the figure, an equal sign 1 is a device main body having a light emitting opening 2,
Reference numeral 3 denotes an elongated tubular light source housed in the apparatus main body 1, and reference numeral 4 denotes a lattice-shaped louver which is a light control means provided in the light projecting opening 2. The louver 4 includes a plurality of first louver pieces, which are first light control means 5 in a direction along the longitudinal direction of the light source 3, and a main part formed in a wedge shape projecting in the light projection direction of the light source 3. And a plurality of second louver pieces as second light control means 6 provided in a direction intersecting with the first louver piece 5. The second louver piece 6 closes the surface on the light source 3 side to serve as a reflection surface, and is provided at the upper end and is a lowermost point which is an opposing surface formed so as to oppose the light source. And an inclined surface whose upper end is inclined at an angle substantially equal to the light-shielding angle of the first louver piece, and a substantially vertical rising surface connecting the inclined surface and the main portion. It has both sides and a flat lower end located near the open end of the instrument body 1, and is arranged so as to be orthogonal to the axis of the light source 3. In the present embodiment, the elongated light source 3 is, for example,
It is a fluorescent lamp. Alternatively, a single-base fluorescent lamp, a halogen lamp, or the like may be used. Reference numeral 11 denotes a socket, and the lighting equipment is for two lights. Therefore, the second louver piece is provided for each of the two lamps, and is integrally formed as a single member. Next, the operation of the present embodiment will be described. The two side portions 7 of the surface of the second louver piece 6 on the light source 3 side are made to rise so as to sandwich the light source 3, and the rising slope angle is set to
Is substantially the same as the light-shielding angle of the first louver piece 5, for example,
30 degrees. Therefore, when the light source 3 is turned on, the light emitted from the light source 3 is reflected by the surface of the side portion 7 of the second louver piece 6 to go upward, reflected by the upper end of the first louver piece 5 and projected. The light is directed substantially parallel to the surface of the light opening 2 and further reflected by the upper end of the other first louver piece 5, and the reflected light is directed downward. Thereby, the light reflected by the surface of the second louver piece 6 on the light source 3 side is suppressed from being smaller than the light-shielding angle by the first louver piece 5. Further, a rising surface of the side portion 7 of the second louver piece 6 is interposed between the light source 3 and the vicinity of the intermediate portion of the first louver piece 5. Therefore, when the appliance is viewed from an oblique direction, the light from the light source 3 in the lighting state is not blocked by the rising surface of the side portion 7 and does not appear on the intermediate portion of the first louver 5. Therefore, glare caused by the intermediate portion can be prevented.
請求項１の発明によると、第２の制光手段は、器具本
体の開口端側に位置する平坦な下端部を有し、かつ断面
がほぼ楔状に形成されてなる主要部および管形光源側に
設けられ、前記第１の制光手段の遮光角とほぼ同一とな
るような角度をもって傾斜する傾斜面および傾斜面と前
記主要部とを接続するほぼ垂直な立ち上がり面を含んで
なる両側部を有し、管形光源の軸と直交するように配置
されたので、第２の制光手段で発生する反射光が第１の
制光手段によって遮光角以下となるのを抑制できる。ま
た、第２の制光手段の立ち上がり面および下端部は、光
源からの光が遮光角以下になることを抑制するので、斜
め下方向から照明器具を見た際に、眩しさを低減するこ
とができる。 請求項２の発明によると、第２の制光手段の傾斜面
は、立ち上がり面を折り曲げて形成されているので、剛
性が増し、第２の制光手段の強度が向上する。According to the first aspect of the present invention, the second light control means has a flat lower end located on the opening end side of the apparatus main body, and has a main portion having a substantially wedge-shaped cross section and a tubular light source side. And both side portions including an inclined surface inclined at an angle substantially equal to the light blocking angle of the first light control means and a substantially vertical rising surface connecting the inclined surface and the main portion. Since the light source is provided so as to be orthogonal to the axis of the tubular light source, it is possible to prevent the reflected light generated by the second light control means from becoming smaller than the light blocking angle by the first light control means. In addition, the rising surface and the lower end of the second light control unit suppress the light from the light source from being smaller than the light-shielding angle, so that glare can be reduced when the lighting apparatus is viewed obliquely from below. Can be. According to the second aspect of the present invention, since the inclined surface of the second light control means is formed by bending the rising surface, the rigidity is increased, and the strength of the second light control means is improved.
【図１】第１図は本発明の一実施の形態を示す照明器具
の横断面図。FIG. 1 is a cross-sectional view of a lighting device showing an embodiment of the present invention.
【図２】第２図は同じく縦断面図。FIG. 2 is a longitudinal sectional view of the same.
【図３】第３図は同じく第２の制光手段の要部斜視図。FIG. 3 is a perspective view of a main part of the second light control means.
【図４】第４図は同じく第２の制光手段の底面図。FIG. 4 is a bottom view of the second light control means.
【図５】第５図は従来例を示す照明器具の横断面図。FIG. 5 is a cross-sectional view of a lighting device showing a conventional example.
１……器具本体 ３……光源 ５……第１の制光手段 ６……第２の制光手段 DESCRIPTION OF SYMBOLS 1 ... Instrument main body 3 ... Light source 5 ... 1st light control means 6 ... 2nd light control means
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−205903（ＪＰ，Ａ) 特開 昭61−16404（ＪＰ，Ａ) 実開 昭56−130206（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) F21V 11/02 F21V 13/10 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-205903 (JP, A) JP-A-61-16404 (JP, A) JP-A-56-130206 (JP, U) Field (Int.Cl. 6 , DB name) F21V 11/02 F21V 13/10
Claims (2)
形光源の軸方向に沿って配設された第１の制光手段と； 器具本体の開口端側に位置する平坦な下端部を有し、か
つ断面がほぼ楔状に形成されてなる主要部および管形光
源側に設けられ、前記第１の制光手段の遮光角とほぼ同
一となるような角度をもって傾斜する傾斜面および傾斜
面と前記主要部とを接続するほぼ垂直な立ち上がり面を
含んでなる両側部を有し、管形光源の軸と直交するよう
に配設された複数の第２の制光手段と； を具備していることを特徴とする照明器具。An apparatus main body having an opening on a lower surface; a tubular light source disposed in the apparatus main body; an axial direction of the tubular light source such that a lower end portion is located near an opening end of the appliance main body. A first light control means disposed along the main part, which has a flat lower end located on the opening end side of the appliance body, and has a substantially wedge-shaped cross section and is provided on the tube-shaped light source side; And a side surface including an inclined surface inclined at an angle substantially equal to the light blocking angle of the first light control means and a substantially vertical rising surface connecting the inclined surface and the main portion. A plurality of second light control means disposed so as to be orthogonal to the axis of the tubular light source.
を折り曲げて形成されていることを特徴とする請求項１
記載の照明器具。2. The apparatus according to claim 1, wherein the inclined surface of the second light control means is formed by bending a rising surface.
The lighting fixture as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1156039A JP2917996B2 (en) | 1989-06-19 | 1989-06-19 | lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1156039A JP2917996B2 (en) | 1989-06-19 | 1989-06-19 | lighting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0322304A JPH0322304A (en) | 1991-01-30 |
| JP2917996B2 true JP2917996B2 (en) | 1999-07-12 |
Family
ID=15618985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1156039A Expired - Fee Related JP2917996B2 (en) | 1989-06-19 | 1989-06-19 | lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2917996B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3605060B2 (en) | 2001-09-28 | 2004-12-22 | 三洋電機株式会社 | Display device |
| JP5536989B2 (en) * | 2008-05-27 | 2014-07-02 | パナソニック株式会社 | lighting equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT381577B (en) * | 1983-04-08 | 1986-11-10 | Bartenbach Christian | GLARE-FREE LAMP FOR A ROD-SHAPED LIGHT SOURCE |
-
1989
- 1989-06-19 JP JP1156039A patent/JP2917996B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0322304A (en) | 1991-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |