JPS6127055Y2 - - Google Patents
Info
- Publication number
- JPS6127055Y2 JPS6127055Y2 JP1981098443U JP9844381U JPS6127055Y2 JP S6127055 Y2 JPS6127055 Y2 JP S6127055Y2 JP 1981098443 U JP1981098443 U JP 1981098443U JP 9844381 U JP9844381 U JP 9844381U JP S6127055 Y2 JPS6127055 Y2 JP S6127055Y2
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- light source
- illuminated
- lamp cover
- thickness
- 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
Links
Landscapes
- Illuminated Signs And Luminous Advertising (AREA)
Description
【考案の詳細な説明】
本考案は、機器などにおいて、目盛や文字、記
号、数値等を照明するためのランプに関するもの
である。[Detailed Description of the Invention] The present invention relates to a lamp for illuminating scales, characters, symbols, numerical values, etc. in equipment and the like.
この様なランプは、１個のランプで複数の文
字、記号等を照明することが通常である。第１図
及び第２図はその様な使用例を示すもので、図中
１はアクリル板で、このアクリル板１上に文字記
号２が表示されている。ランプ３は光源４とラン
プカバー５とからなり、アクリル板１に設けられ
た挿入孔１ａ内に挿入されている。光源４からの
光は、第２図に示す様に、ランプカバー５を通
り、アクリル板１内を透過し、その端部の反射面
１ｂで前方に反射され、アクリル板１表面に記載
された文字記号等２ａ，２ｂ，２ｂを照明する。 Usually, such a lamp illuminates a plurality of characters, symbols, etc. with one lamp. FIGS. 1 and 2 show examples of such usage. In the figures, 1 is an acrylic plate, and a character symbol 2 is displayed on this acrylic plate 1. The lamp 3 consists of a light source 4 and a lamp cover 5, and is inserted into an insertion hole 1a provided in the acrylic plate 1. As shown in FIG. 2, the light from the light source 4 passes through the lamp cover 5, passes through the acrylic plate 1, is reflected forward by the reflective surface 1b at the end, and is reflected on the surface of the acrylic plate 1. Character symbols etc. 2a, 2b, 2b are illuminated.
この様な構成において、ランプ３に近い地点の
文字記号等２ａは明るく照明されるが、ランプ３
から遠い地点の文字記号等２ｂ，２ｂは暗くな
り、ランプ３からの距離に光ムラが生ずる欠点が
あつた。 In such a configuration, the characters and symbols 2a near the lamp 3 are brightly illuminated, but the lamp 3
Characters and symbols 2b, 2b at points far from the lamp 3 become dark, and there is a drawback that light unevenness occurs at a distance from the lamp 3.
本考案は、上記の様な従来技術の欠点を解消す
ることを目的とするもので、この目的を達成する
ために、ランプカバーの肉厚を光源と被照明物と
の距離が近い部分程厚くなる様に偏肉し、このラ
ンプカバーで光を吸収することにより、光源と被
照明物の距離が異なつていても光ムラが生じるこ
とがない様に構成したものである。 The purpose of the present invention is to eliminate the drawbacks of the conventional technology as described above. By absorbing the light with the lamp cover, the lamp cover is constructed so that unevenness in light does not occur even if the distance between the light source and the object to be illuminated is different.
以下、本考案の一実施例を第３図及び第４図に
より説明する。 An embodiment of the present invention will now be described with reference to Figs.
本実施例のランプ１０は、光源１１と、この光
源１１を覆うランプカバー１２から成る。ランプ
カバー１２には、光源１１からの遠地点と近地点
との明るさを同じにするように偏肉部１３が形成
されている。即ち、光源１１の正面に被照明物２
０が存在すると仮定すると、ランプカバー１２に
おける光源１１の正面の部分の肉厚t3が最も厚
く、斜め方向の肉厚t2が次に厚く、側面の肉厚t1
が最も薄くなるように偏肉部１３が形成されてい
る。 The lamp 10 of this embodiment includes a light source 11 and a lamp cover 12 that covers the light source 11. An uneven thickness portion 13 is formed in the lamp cover 12 so that the brightness at the apogee and the perigee from the light source 11 are the same. That is, the object 2 to be illuminated is placed in front of the light source 11.
0 exists, the thickness t 3 of the lamp cover 12 in front of the light source 11 is the thickest, the thickness t 2 in the diagonal direction is the next thickest, and the thickness t 1 of the side surface is the thickest.
The uneven thickness portion 13 is formed such that the thickness is the thinnest.
なお、本実施例では、 t2＝2t1 t3＝3t1 に設定されている。 Note that in this embodiment, t 2 =2t 1 t 3 =3t 1 .
このような構成を有する本実施例のランプにお
いて、ランプカバー１２の各厚さの部分を通つて
来た光の明るさをL1〜L3とし、ランプカバーの
光の透過係数をｋとすると、
L2＝（L1／２）・ｋ
L3＝（L1／２）・ｋ
となり、光源１１と被照明物２０との距離が近い
ランプの正面程暗くなる。その結果、ランプ１０
に近い地点と遠い地点との光ムラがなくなり、明
るさが均一化される。 In the lamp of this embodiment having such a configuration, let L 1 to L 3 be the brightness of the light that has passed through each thickness of the lamp cover 12, and k be the light transmission coefficient of the lamp cover. , L 2 =(L 1 /2)·k L 3 =(L 1 /2)·k, and the closer the distance between the light source 11 and the object 20 to be illuminated is the closer the front of the lamp is, the darker it becomes. As a result, lamp 10
The unevenness of light between points near and far away is eliminated, and the brightness is evened out.
この点を第５図Ａ，Ｂによつて具体的に述べる
と、同じ光源１１と被照明物２０を使用し他第５
図Ａのような構造の照明装置において、本考案の
ランプカバーと従来の均一の厚みのランプカバー
とで、被照明物２０上の各点a1〜a5の明るさを比
較すると、第５図Ｂ中実線で示すように従来のラ
ンプカバーでは明るさの差が大きいが、偏肉部を
持つ本実施例のランプカバーでは明るさが均一化
されていることがわかる。 To explain this point concretely with reference to FIGS. 5A and 5B, using the same light source 11 and illuminated object 20,
In a lighting device having the structure as shown in Figure A, when comparing the brightness of each point a 1 to a 5 on the illuminated object 20 between the lamp cover of the present invention and a conventional lamp cover with a uniform thickness, the fifth As shown by the solid line in FIG. B, there is a large difference in brightness in the conventional lamp cover, but it can be seen that the brightness is uniform in the lamp cover of this embodiment having uneven thickness portions.
なお、本実施例では、光源１１として、フイラ
メントを使用しているが、発光ダイオード等その
他どのような光源を使用しても良い。 In this embodiment, a filament is used as the light source 11, but any other light source such as a light emitting diode may be used.
以上説明したように本考案によるランプは、光
源から遠い地点と近い地点の明るさを均一化する
ように、ランプカバーの被照明物に近い部分の肉
厚を厚く構成したものであるから、このランプ１
個で複数の文字、記号等の被照明物を照明しても
光ムラが生ずることがないという優れた効果を有
する。 As explained above, the lamp according to the present invention has a thick wall in the part of the lamp cover near the object to be illuminated so as to equalize the brightness at points far from the light source and points near the light source. lamp 1
It has the excellent effect that uneven light does not occur even when a plurality of characters, symbols, and other objects to be illuminated are illuminated.
第１図は従来のランプを使用した照明装置の一
例を示す正面図、第２図はその側面図、第３図は
本考案のランプを使用した照明装置の一例を示す
正面図、第４図はその側面図、第５図Ａは従来の
ランプと本考案のランプとの明るさを比較するた
めの照明装置の正面図、第５図Ｂは第５図Ａの照
明装置における各部とその明るさを示すグラフで
ある。
１０……ランプ、１１……光源、１２……ラン
プカバー、１３……偏肉部、２０……被照明物。
Fig. 1 is a front view showing an example of a lighting device using a conventional lamp, Fig. 2 is a side view thereof, Fig. 3 is a front view showing an example of a lighting device using the lamp of the present invention, and Fig. 4 is a side view, FIG. 5A is a front view of the lighting device for comparing the brightness of a conventional lamp and the lamp of the present invention, and FIG. 5B is a diagram of each part of the lighting device of FIG. This is a graph showing the DESCRIPTION OF SYMBOLS 10... Lamp, 11... Light source, 12... Lamp cover, 13... Uneven thickness part, 20... Illuminated object.
Claims (1)
するランプにおいて、 ランプの周囲にランプカバーが配設され、この
ランプカバーの肉厚が、ランプ光源と被照明物と
の距離の近い部分においては厚く、ランプ光源と
被照明物との距離が遠い部分においては薄くなる
ように偏肉されていることを特徴とするランプ。[Scope of Claim for Utility Model Registration] In a lamp that illuminates an illuminated object placed in front of the lamp light source, a lamp cover is provided around the lamp, and the thickness of this lamp cover is the same as that of the lamp light source and the illuminated object. A lamp characterized in that the thickness is uneven so that it is thick in a part close to an object and thinner in a part far away from a lamp light source and an object to be illuminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981098443U JPS586305U (en) | 1981-07-03 | 1981-07-03 | lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981098443U JPS586305U (en) | 1981-07-03 | 1981-07-03 | lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS586305U JPS586305U (en) | 1983-01-17 |
| JPS6127055Y2 true JPS6127055Y2 (en) | 1986-08-13 |
Family
ID=29893200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981098443U Granted JPS586305U (en) | 1981-07-03 | 1981-07-03 | lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586305U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5784659U (en) * | 1980-11-13 | 1982-05-25 |
-
1981
- 1981-07-03 JP JP1981098443U patent/JPS586305U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS586305U (en) | 1983-01-17 |
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