JPH0291683A - Light irradiation device - Google Patents
Light irradiation deviceInfo
- Publication number
- JPH0291683A JPH0291683A JP24329488A JP24329488A JPH0291683A JP H0291683 A JPH0291683 A JP H0291683A JP 24329488 A JP24329488 A JP 24329488A JP 24329488 A JP24329488 A JP 24329488A JP H0291683 A JPH0291683 A JP H0291683A
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- dots
- straight tube
- density
- light
- 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.)
- Pending
Links
- 238000009792 diffusion process Methods 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 abstract description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010017 direct printing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は例えば、誘導灯などの光照射装置に係り、特に
ランプに対向して配設される透光性パネルに１３０する
。[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a light irradiation device such as a guide light, and in particular to a light-transmitting panel disposed opposite to the lamp. do.
（従来の技術）
この種の光照射装置において、例えば、特開昭５５−１
５１２６Ｑ公報に記載されているように、白色塗料によ
るドツトパターンにて形成したパネルが知られている。(Prior art) In this type of light irradiation device, for example,
As described in Publication No. 5126Q, a panel formed with a dot pattern made of white paint is known.
そしてこのパネルのドツトパターンは、ドツトの厚み、
大きさを変化させて輝度むらをなくすようにしているが
、光源の直管形ランプのフィラメントとドツトパターン
の各ドツトとの関係については何等解明されていない。The dot pattern on this panel is determined by the thickness of the dots,
Although attempts have been made to eliminate uneven brightness by changing the size, the relationship between the filament of the straight tube lamp as the light source and each dot in the dot pattern has not been clarified.
そして誘導灯のような光照射装置では、日本照明器具工
業会技術基準（ＪＩＬ塁準）により、直管形蛍光ランプ
を用いた器具の中には、表示パネルはランプの発光長よ
り大きくするように規定されている。このようなランプ
の発光長より大きい表示パネルを用いた器具では、ラン
プの管端部より外側が暗くなる傾向があり、輝度むらが
生じる問題がある。すなわち、直管形ランプとこの直管
形ランプに対向するパネルの表示面の距離との関係を見
ると、第７図に特性曲線Ａに示すように、直管形ランプ
の中心部と管端部側とでは輝度差が大きく、輝度むらが
大きい問題があり、前記従来のパネルでは、この直管形
ランプの中心部と管端部との輝度むらをなくすことは解
決されていない。For light irradiation devices such as guide lights, the Japan Lighting Industry Association Technical Standards (JIL Standards) require that the display panel be larger than the light emitting length of the lamp in devices that use straight tube fluorescent lamps. stipulated in In such a device using a display panel that is larger than the light emitting length of the lamp, the outside of the tube end of the lamp tends to become darker, causing a problem of uneven brightness. In other words, when looking at the relationship between the straight tube lamp and the distance between the display surface of the panel facing the straight tube lamp, as shown in characteristic curve A in FIG. There is a problem that there is a large difference in brightness between the ends of the lamp and the unevenness of brightness, and in the conventional panel, it has not been solved to eliminate the unevenness of brightness between the center part and the end of the tube of the straight tube lamp.
（発明が解決しようとする課題）
本発明は上記問題点に鑑みなされたもので、直管形ラン
プに対向するパネルに形成したドツト状からなる処理を
施したことにより容易に輝度むらをなくすことができる
誘導灯などの光照射装置を提供するものである。(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to easily eliminate uneven brightness by applying a treatment consisting of dots formed on a panel facing a straight tube lamp. The present invention provides a light irradiation device such as a guide light that can perform
請求項２に記載の発明は、直管形ランプのフィラメント
近傍のホットスポット部における輝点による輝度むらを
防止できる誘導灯などの光照射装置を提供するものであ
る。The invention as set forth in claim 2 provides a light irradiation device such as a guide light that can prevent uneven brightness due to a bright spot in a hot spot near a filament of a straight tube lamp.
〔発明の構成〕
（課題を解決するための手段）
本発明の光照射装置は、フィラメントを相対向して両端
部に設けた直管形ランプと、この直管形ランプに対向し
て略平行に配設されこの直管形ランプの両フィラメント
の間隔寸法よりも長い有効表示面を有し板面に多数のド
ツト状からなる光拡散処理を施した透光性パネルとから
なり、前記透光性パネルに前記ランプのフィラメントの
略内側からそれぞれ前記直管形ランプの管軸方向のドツ
トパターンのドツトの密度を粗密の程度を変化させて外
端部側のドツトの密度を粗としたことを特徴としたもの
である。[Structure of the Invention] (Means for Solving the Problems) The light irradiation device of the present invention includes a straight tube lamp having filaments facing each other at both ends thereof, and a straight tube lamp having filaments facing each other and substantially parallel to each other. The light-transmitting panel has an effective display surface longer than the distance between the filaments of the straight tube lamp, and has a light-diffusion treatment made of a large number of dots on the plate surface. The density of the dots in the dot pattern in the direction of the tube axis of the straight tube lamp is varied from approximately inside the filament of the lamp to the density of the dots on the outer end side of the filament of the lamp. This is a characteristic feature.
請求項２に記載の光照射装置は、請求項１に記載の光照
射装置において、透光性パネルに形成したドツトは直管
形ランプのフィラメント近傍の密度を密にしたことを特
徴とするものである。The light irradiation device according to claim 2 is the light irradiation device according to claim 1, characterized in that the dots formed on the translucent panel are densely arranged near the filament of the straight tube lamp. It is.
（作用）
本発明の光照射装置は、パネルの輝度が岨くなる傾向の
ある直管形ランプのフィラメントの略内側からそれぞれ
前記直管形ランプの軸方向の光拡散処理のドツトの密度
を粗密の程度を変化させて外端部側のドツトの密度を粗
としたことにより、パネルの輝度の大きい部分は光の透
過率が抑制され、直管形ランプの中心から管端部の外側
まで輝度むらが生じることがなく、パネルにランブイー
ジが生じない。(Function) The light irradiation device of the present invention increases the density of light diffusion treatment dots in the axial direction of the straight tube lamp from approximately inside the filament of the straight tube lamp, where the brightness of the panel tends to decrease. By changing the degree of dot density on the outer end side, the light transmittance is suppressed in the high brightness areas of the panel, and the brightness is reduced from the center of the straight tube lamp to the outside of the tube end. No unevenness and no lumpiness on the panel.
請求項２に記載の光照射装置は、直管形ランプのフィラ
メントの近傍のホットスポットによる輝点が解消され、
パネル全体の輝度が均一になる。In the light irradiation device according to claim 2, bright spots due to hot spots near the filament of the straight tube lamp are eliminated,
The brightness of the entire panel becomes uniform.
（実施例） 本発明の一実施例の構成を図面について説明する。(Example) The configuration of an embodiment of the present invention will be described with reference to the drawings.
１は誘導灯器具本体で、この器具本体１の左右両端部の
内面には相対して対をなす直管形蛍光ランプソケット２
．３が設けられ、この両ランプソケット２．３に直管形
蛍光ランプ４の両端口金部５．６が＠脱自在に装着され
るようになっている。また前記器具本体１の前後面の開
口部７．８には透光性の表示パネル９．１０が係合溝１
１に着脱自在に取付けられ、この画表示パネル９．１０
は前記ランプソケット２．３に装着したランプ４に対向
して略平行に配設されるようになっている。Reference numeral 1 denotes a guide light fixture body, and a pair of straight tube fluorescent lamp sockets 2 are provided on the inner surfaces of both left and right ends of the fixture body 1.
．． 3 are provided, and both end base portions 5.6 of a straight tube fluorescent lamp 4 are removably attached to both lamp sockets 2.3. In addition, a translucent display panel 9.10 is provided in the opening 7.8 on the front and rear surfaces of the instrument body 1 in the engagement groove 1.
This image display panel 9.10 is removably attached to 1.
are arranged substantially parallel to and opposite to the lamp 4 attached to the lamp socket 2.3.
前記表示パネル９．１０は例えば、アクリル樹脂にハロ
ゲン化物などの難燃材を添加した難燃性アクリル樹脂板
にて乳白色に形成され、このパネル９，１０の外面には
文字、図形などの表示１２が印刷形成されている。The display panels 9 and 10 are made of a flame-retardant acrylic resin plate made of acrylic resin with a flame-retardant material such as a halide added thereto, and have a milky white color, and the outer surfaces of the panels 9 and 10 display characters, figures, etc. 12 are printed.
さらにこの表示パネル９．１０は前記直管形蛍光ランプ
４に対向する内側板面には多数のドツト状からなる光拡
散処理を施しである。この光拡散処理は例えば、ドツト
パターン１３にて形成し、このドツトパターン１３の各
ドツト１４は全て同一大きさで、例えば、面積は０．２
０−から１．０−までの大きさとし、好ましくは０゜３
３−とし、このドツト１４を円形とした場合には第６図
（２）に示すように直径が０．６１１１ＩＩＩ〜１．１
ａａ＋の大きさで白色顔料入りインクにて印刷または、
塗布で形成されている。このドツトパターン１３は直曽
形蛍光ランプ４の相対向する管端部側のフィラメント間
の略内側からそれぞれ前記直管形蛍光ランプ４の軸方°
向のドツト１４の密度を粗密の程度を変化させて外端部
側のドツト１４の密度を粗に形成されている。すなわち
直管形蛍光ランプ４のフィラメント間の略内側間はドツ
ト１４の充填率を密とし、この直管形蛍光ランプ４のフ
ィラメントの略内側から管端部外側に向けておよびこの
直管形蛍光ランプ４の管軸方向と直交方向に離反するに
従い段階的に順次ドツト１４の密度が粗く形成されてい
る。なお、前記直管形蛍光ランプ４と正対する部分のド
ツトパターン１３は、この直管形蛍光ランプ４の管軸方
向と直交方向でこの直管形蛍光ランプ４の管径の２７５
の範囲、または５０％の範囲は均一の充填率となってい
る。Furthermore, the inner surface of the display panel 9, 10 facing the straight tube fluorescent lamp 4 is subjected to a light diffusion treatment consisting of a large number of dots. This light diffusion treatment is performed, for example, by forming a dot pattern 13, and each dot 14 of this dot pattern 13 has the same size, for example, an area of 0.2
The size should be from 0- to 1.0-, preferably 0°3
3-, and when this dot 14 is circular, the diameter is 0.6111III to 1.1 as shown in FIG. 6 (2).
Printed in aa+ size with white pigmented ink or
It is formed by coating. The dot patterns 13 are arranged in the axial direction of the straight tube fluorescent lamp 4 from approximately inside the space between the filaments on the opposing tube end sides of the straight tube fluorescent lamp 4.
The density of the dots 14 on the outer end side is made coarser by varying the density of the dots 14 on the outer end side. That is, the filling rate of the dots 14 is dense between the filaments of the straight tube fluorescent lamp 4, and the dots 14 are densely packed between the filaments of the straight tube fluorescent lamp 4 toward the outside of the tube end. The density of the dots 14 is gradually increased as they move away from each other in a direction orthogonal to the tube axis direction of the lamp 4. Note that the dot pattern 13 on the portion directly facing the straight tube fluorescent lamp 4 has a diameter of 275 mm in the direction orthogonal to the tube axis direction of the straight tube fluorescent lamp 4.
The range of or the range of 50% has a uniform filling rate.
またドツトパターン１３は直管形蛍光ランプ４のフィラ
メント近傍の密度が密に形成されている。Further, the dot pattern 13 is formed densely near the filament of the straight tube fluorescent lamp 4.
この密度の高い範囲は２５ａｓ＋Ｘ２５ａｗ程度とする
。This high density range is approximately 25as+X25aw.
そして前記直管形蛍光ランプ４と各表示パネル９．１０
との間隔は略同−寸法とする。and the straight tube fluorescent lamp 4 and each display panel 9.10.
The distance between them shall be approximately the same size.
また前記器具本体１の一端上部に安定器１６、下部に非
常点灯用電源電池１７、他端部に点検スイッチ１８を設
けた点灯回路基板１９が設けられ、また上部には電源接
続用端子２０が接続されている。Further, a lighting circuit board 19 is provided with a ballast 16 at the top of one end of the device body 1, a power supply battery 17 for emergency lighting at the bottom, and an inspection switch 18 at the other end, and a power supply connection terminal 20 is provided at the top. It is connected.
またドツト１４の形状は円形に限らず、第６図（ｋｌｅ
（ｃ） （ｄ）に示すように三角形、四角形、六角形
など適宜の形状とすることができる。Furthermore, the shape of the dot 14 is not limited to a circle, as shown in FIG.
(c) As shown in (d), it can be made into an appropriate shape such as a triangle, quadrangle, or hexagon.
この実施例の作用を説明する。The operation of this embodiment will be explained.
表示パネル９．１０のランプ４に対向する内面には、こ
のランプ４のフィラメント間の略内側部分に対向する部
分のドツトパターン１３のドツト１４の充ＩｔＴｔ率を
密とし、この直管形蛍光ランプ４の管端部側およびこの
直管形蛍光ランプ４の管軸方向と直交方向に離反するに
従い段階的にドツトパターン１３のドツト１４の密度を
粗く形成したため、直管形蛍光ランプ４の管端部外側お
よび直管形蛍光ランプ４の管軸方向から直交方向に離反
した側に従い透過率が大きくなり、直管形蛍光ランプ４
に対向する部分に近い程ドツトパターン１３にて拡散、
反射、吸収されて光の透過率が抑制され、表示パネル９
．１０を直管形蛍光）ンプ４に接近させても、ランプの
イメージが現れることなく、表示パネル全体の輝度が略
均等になる。そしてラン°プ４の管軸方向に充填率を変
化させない場合、パネル９゜１０の輝度特性は第７図（
ハ）のようになり、管端部において輝度の変化が大小逆
転することになる。On the inner surface of the display panel 9.10 facing the lamp 4, the dots 14 of the dot pattern 13 in the portion facing the substantially inner portion between the filaments of the lamp 4 are densely filled. The density of the dots 14 of the dot pattern 13 is gradually increased as they move away from each other in the direction perpendicular to the tube axis direction of the straight tube fluorescent lamp 4. The transmittance increases toward the outer side and the side that is perpendicularly away from the tube axis direction of the straight tube fluorescent lamp 4.
The closer to the part facing the dot pattern 13, the more diffused
The transmittance of light is suppressed by being reflected and absorbed, and the display panel 9
．． Even if the lamp 10 is brought close to the straight fluorescent lamp 4, the image of the lamp does not appear, and the brightness of the entire display panel becomes approximately equal. When the filling factor of lamp 4 is not changed in the tube axis direction, the brightness characteristics of panels 9 and 10 are shown in Figure 7 (
As shown in c), the change in brightness is reversed in magnitude at the end of the tube.
すなわち第８図に示すような、パネル９．１０の各距離
におけるドツトパターン１３のドツト１４の充填率ｄと
相対透過率ｅとの関係を有し、この関係から第７図に示
すように、ドツトパターンを有しないパネルの輝度特性
曲線ａに対し、ドツトパターン１３を形成したパネルの
輝（資）特性曲１ｂを比較すると、ランプ４の中央部と
管端部との輝度差が減少する。That is, as shown in FIG. 8, there is a relationship between the filling factor d of the dots 14 of the dot pattern 13 at each distance of the panel 9 and 10 and the relative transmittance e, and from this relationship, as shown in FIG. Comparing the brightness characteristic curve 1b of the panel with the dot pattern 13 formed thereon with the brightness characteristic curve a of the panel without the dot pattern, the difference in brightness between the central part of the lamp 4 and the end of the tube decreases.
さらに、ドツトパターン１３は直管形蛍光ランプ４のフ
ィラメント近傍の密度が密に形成されているため、直管
形蛍光ランプ４のフィラメントの近傍のホットスポット
による輝点が解消され、パネル全体の輝度が均一になる
。Furthermore, since the dot pattern 13 is densely formed near the filament of the straight tube fluorescent lamp 4, bright spots caused by hot spots near the filament of the straight tube fluorescent lamp 4 are eliminated, and the brightness of the entire panel is increased. becomes uniform.
また直管形蛍光ランプ４に対向して配設された表示パネ
ル９．１０は、光拡散性を有しかつ難燃性アクリル樹脂
にて形成されているため、直管形蛍光ランプ４に表示パ
ネル９．１０との間隔を短くして接近させても、表示パ
ネル９，１０は直管形蛍光ランプ４から照射される光に
含まれる紫外線によって黄変したり、ランプ４の熱、ま
たは安定器などの点灯部品の放熱で熱変形することなく
、さらに火災発生時でも延焼することもなく、安全性が
確保されるとともに、装置全体を薄形小形化でき、容積
を小さくできるものである。In addition, the display panels 9 and 10 disposed opposite the straight tube fluorescent lamp 4 are made of light-diffusing and flame-retardant acrylic resin. Even if the distance between the display panels 9 and 10 is shortened and the display panels 9 and 10 are brought close together, the display panels 9 and 10 may yellow due to the ultraviolet rays contained in the light emitted from the straight tube fluorescent lamp 4, or become unstable due to the heat of the lamp 4. The device does not undergo thermal deformation due to heat dissipation from lighting components such as containers, and even in the event of a fire, does not spread, ensuring safety, and the entire device can be made thinner and smaller, allowing its volume to be reduced.
次にこの実施例の具体的寸法について説明する。Next, specific dimensions of this embodiment will be explained.
１０Ｗの直管形蛍光ランプ４を用いた誘導灯では、表示
パネル９，１０の有効面積の大きさは、ＪＩＬ基準では
直管形蛍光ランプ４の軸方向の長さＬｌが３６０＃Ｉ以
上、直管形蛍光ランプ４の管軸方向と直交方向の高さｈ
が１２０−以上に規定され、直管形蛍光ランプ４の管長
Ｌ２は３３０１１＋１１．直管形蛍光ランプ４の発光部
の長さし３は３１０ｓである。In a guide light using a 10W straight tube fluorescent lamp 4, the size of the effective area of the display panels 9 and 10 is such that the axial length Ll of the straight tube fluorescent lamp 4 is 360 #I or more according to JIL standards. Height h of the straight tube fluorescent lamp 4 in the direction perpendicular to the tube axis direction
is defined as 120- or more, and the tube length L2 of the straight tube fluorescent lamp 4 is 33011+11. The length 3 of the light emitting part of the straight tube fluorescent lamp 4 is 310 seconds.
そしてこの表示パネル９．１０に形成するドツトパター
ン１３の面積充填率は、第４図および第５図に示すよう
に、ランプ４の中心部の範囲Ａを８７％とし、順次、こ
の範囲Ａからランプ４の管軸方向の両外側に向かって範
囲Ｂを８３％、範囲Ｃを８０％とし、ランプ４のフィラ
メント近傍の範囲りを８３％とし、さらにランプ４の管
軸方向の両件側に向かって順次範囲Ｅを８０％、範囲Ｆ
を７５％、範囲Ｇを７０％、範囲Ｈを６５％、範囲Ｉを
６０％、範囲Ｊを５５％、範囲Ｋを５０％、範囲りを４
０％、範囲Ｍを３０％とし、さらにランプ４の管軸方向
と直交する方向もランプ４の中心から離反するに従い、
８１％の範囲Ａから範囲Ｂの８３％、範囲Ｃの８０％、
範囲Ｆの７５％、範囲Ｇの７０％、範囲Ｈの６５％、範
囲■の６０％、範囲Ｊの５５％、範囲にの５０％、範囲
Ｎの４５％、範囲りの４０％、範囲Ｏの３５％、範囲Ｍ
を３０％、範囲Ｐの２５％と順次段階的に順次面積充填
率を少なくする。そとてこの範囲Ｐの外側にさらにドツ
トパターン１３のドツト１４の密度を更に粗くし中央部
を両端部より多少密度を密とした範囲Ｑが形成されてい
る。The area filling rate of the dot pattern 13 formed on this display panel 9.10 is as shown in FIGS. Range B is 83%, range C is 80% towards both outside sides of the lamp 4 in the tube axis direction, range near the filament of the lamp 4 is 83%, and further on both sides of the lamp 4 in the tube axis direction. Range E is 80%, range F is 80%.
75%, range G 70%, range H 65%, range I 60%, range J 55%, range K 50%, range R 4
0%, range M is 30%, and as the direction perpendicular to the tube axis direction of the lamp 4 moves away from the center of the lamp 4,
81% range A to 83% range B, 80% range C,
75% of range F, 70% of range G, 65% of range H, 60% of range ■, 55% of range J, 50% of range, 45% of range N, 40% of range O, range O 35% of, range M
The area filling rate is gradually decreased from 30% to 25% of range P. Then, outside this range P, a range Q is formed in which the density of the dots 14 of the dot pattern 13 is further made coarser, and the density is slightly higher at the center than at both ends.
なお前記実施例ではパネル９．１０の内側板面に直接印
刷などにて形成したが、透明フィルムにドツト１４を印
刷してフィルムを透光板９．１０に貼着してもよい。In the above embodiment, the dots 14 were formed by direct printing on the inner surface of the panel 9.10, but the dots 14 may be printed on a transparent film and the film may be attached to the transparent plate 9.10.
また前記実施例では両面にパネル９，１０を設けた構成
について説明したが、一方の面にのみパネルを設けた構
成でも良く、この構成でもランプ４とパネル９と裏板と
の間隔は同一寸法とする。Further, in the above embodiment, a configuration in which panels 9 and 10 are provided on both sides has been described, but a configuration in which panels are provided only on one side may also be used. Even in this configuration, the distance between the lamp 4, the panel 9, and the back plate is the same size. shall be.
本発明によれば、透光性パネルにランプのフィラメント
の略内側からそれぞれ直管形蛍光ランプの管軸方向のド
ツト状からなる光拡散処理を施したドツトの密度を粗密
の程度を変化させて外端部側のドツトの密度を粗とした
ので、ドツトパターンによってランプに対向する側に近
い程光の透過率が抑制され、輝度むらをなくすことがで
き、ランプに表示パネルを近接させてもランプイメージ
が現れることがなく、ランプと表示パネルとの間隔を小
さくでき、光照射装置全体が薄形小形化でき、包装容器
、在庫スペースを少なく、また持ち運びも容易になり、
しかも表示パネルにはドツト状からなる光拡散処理を形
成するのみで、安価でかつ容易に得られるものである。According to the present invention, the degree of density of the dots is varied by applying light diffusion treatment to the translucent panel from substantially inside the filament of the lamp, each in the shape of a dot in the direction of the tube axis of a straight tube fluorescent lamp. Because the density of the dots on the outer edge side is made coarser, the dot pattern suppresses the light transmittance closer to the side facing the lamp, eliminating uneven brightness, and even when the display panel is placed close to the lamp. The lamp image does not appear, the distance between the lamp and the display panel can be reduced, the entire light irradiation device can be made thinner and smaller, packaging containers and inventory space are reduced, and it is easier to carry.
Moreover, it can be obtained easily and inexpensively by simply forming a dot-shaped light diffusion treatment on the display panel.
さらに請求項２に記載の発明によれば、透光性パネルに
形成したドツトパターンは直管形ランプのフィラメント
近傍の密度を密にしたので、ランプのフィラメント近傍
のホットスポットによる輝点が減少され、パネル全体の
輝度むらがより改善されるものである。Furthermore, according to the second aspect of the invention, the dot pattern formed on the translucent panel has a denser density near the filament of the straight tube lamp, so that bright spots due to hot spots near the filament of the lamp are reduced. , the brightness unevenness of the entire panel is further improved.
第１図は本発明の一実施例を示す光照射装置の一部を切
り欠いた側面図、第２図は同上斜視図、第３図は同上パ
ネルを外した状態の正面図、第４図は同上パネルの内面
図、第５図は同上表示パネルのドツトパターン面積充填
図、第６図＠ ａ（ｃ）ｆｄ）はそれぞれ異なるドツト
の正面図、第７図は同上パネルに各距離における輝度を
示す特性図、第８図は同上パネルの各距離におけるドツ
トパターンの充填率と相対透過率との関係図である。
４・・直管形蛍光ランプ、９，１０・・表示パネル、１
３・・光拡散処理のドツトパターン、１４・・ドツト。
り４
ｄFig. 1 is a partially cutaway side view of a light irradiation device showing an embodiment of the present invention, Fig. 2 is a perspective view of the same as above, Fig. 3 is a front view of the same with the above panel removed, and Fig. 4 is an inner view of the above panel, Fig. 5 is a dot pattern area filling diagram of the above display panel, Fig. 6 @ a (c) fd) is a front view of different dots, and Fig. 7 is a diagram of the brightness at various distances on the above panel. FIG. 8 is a diagram showing the relationship between the filling factor of the dot pattern and the relative transmittance at each distance of the same panel. 4... Straight tube fluorescent lamp, 9, 10... Display panel, 1
3. Dot pattern of light diffusion treatment, 14. Dot. ri4 d
Claims (2)
ランプと、この直管形ランプに対向して略平行に配設さ
れこの直管形ランプの両フィラメントの間隔寸法よりも
長い有効表示面を有し板面に多数のドット状からなる光
拡散処理を施した透光性パネルとからなり、前記透光性
パネルに前記ランプのフィラメントの略内側からそれぞ
れ前記直管形ランプの管軸方向のドットの密度を粗密の
程度を変化させて外端部側のドットの密度を粗としたこ
とを特徴とした光照射装置。(1) A straight tube lamp with filaments facing each other at both ends, and a lamp with an effective length that is longer than the distance between both filaments of the straight tube lamp, which is arranged substantially parallel to the straight tube lamp. It consists of a light-transmitting panel having a display surface and a light-diffusion treatment made of a large number of dots on the plate surface. A light irradiation device characterized in that the density of the dots in the axial direction is varied to make the density of the dots on the outer end side coarser.
フィラメント近傍の密度を密にしたことを特徴とする請
求項１に記載の光照射装置。(2) The light irradiation device according to claim 1, wherein the dots formed on the translucent panel are densely arranged near the filament of the straight lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24329488A JPH0291683A (en) | 1988-09-28 | 1988-09-28 | Light irradiation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24329488A JPH0291683A (en) | 1988-09-28 | 1988-09-28 | Light irradiation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0291683A true JPH0291683A (en) | 1990-03-30 |
Family
ID=17101700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24329488A Pending JPH0291683A (en) | 1988-09-28 | 1988-09-28 | Light irradiation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0291683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7344281B2 (en) | 2002-04-10 | 2008-03-18 | Fujitsu Limited | Display device having a protruding light transmission panel including a light diffusion portion |
-
1988
- 1988-09-28 JP JP24329488A patent/JPH0291683A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7344281B2 (en) | 2002-04-10 | 2008-03-18 | Fujitsu Limited | Display device having a protruding light transmission panel including a light diffusion portion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6240151A (en) | Fluorescent lamp | |
| JPS63309918A (en) | Back light device | |
| JP2020528211A (en) | Ultra-wide light distribution diode (LED) lens for thin direct backlight | |
| JPH0291683A (en) | Light irradiation device | |
| JPH0291685A (en) | Light irradiation device | |
| JPH0542566Y2 (en) | ||
| JPH06130384A (en) | Surface type lighting device | |
| JPH08110411A (en) | Light emitting panel device | |
| JPH05107540A (en) | Illuminating device and liquid crystal display device | |
| JPH07161212A (en) | Luminaire | |
| JP3566399B2 (en) | Surface illumination device and method for increasing brightness of the surface illumination device | |
| JPH02239281A (en) | Light irradiating device | |
| JPH06235824A (en) | Light-guide layer of light-guide plate | |
| JPH0291684A (en) | Light irradiation device | |
| JPH0546074Y2 (en) | ||
| JPH0623084U (en) | Fluorescent display | |
| JP4211337B2 (en) | lighting equipment | |
| JPH0643780Y2 (en) | Surface emitting device | |
| JPH06174931A (en) | Light transmission plate | |
| JP2593334Y2 (en) | Backlight device for LCD | |
| JPS6020141Y2 (en) | A display device that can switch and display multiple colors on the same screen | |
| JPH0876122A (en) | Illumination device | |
| CN110894919A (en) | Mirror lamp | |
| JPH0530253Y2 (en) | ||
| JPH0631605Y2 (en) | Lighting equipment |