JPS6125121Y2 - - Google Patents
Info
- Publication number
- JPS6125121Y2 JPS6125121Y2 JP1981074523U JP7452381U JPS6125121Y2 JP S6125121 Y2 JPS6125121 Y2 JP S6125121Y2 JP 1981074523 U JP1981074523 U JP 1981074523U JP 7452381 U JP7452381 U JP 7452381U JP S6125121 Y2 JPS6125121 Y2 JP S6125121Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- main body
- body case
- optical fiber
- front side
- 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
- 239000013307 optical fiber Substances 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Couplings Of Light Guides (AREA)
Description
【考案の詳細な説明】
この考案は、電球の光を光学系によつて集光し
て本体ケースの正面側に照射する形の携帯電灯の
改良に関する。[Detailed Description of the Invention] This invention relates to an improvement in a portable electric lamp in which light from a light bulb is focused by an optical system and irradiated onto the front side of the main body case.
周知のように、一般の携帯電灯では、本体ケー
スの内蔵された電池によつて点灯駆動される電球
のそれ程強くない光を有効に活用すべく、放物面
鏡やレンズからなる光学系により電球の光を集光
し、本体ケースの正面側に集中的に照射する構成
となつている。従つて、その光照射方向（光軸方
向）以外に拡散する光は極めて微弱で、特に光照
射方向とは逆方向の本体ケース背面側に出る光は
ほとんどない。 As is well known, in general portable lights, in order to make effective use of the not-so-strong light of the light bulb, which is powered by a battery built into the main body case, the light bulb is illuminated by an optical system consisting of a parabolic mirror and lens. The structure is such that the light is collected and irradiated intensively onto the front side of the main body case. Therefore, the light that diffuses in directions other than the light irradiation direction (optical axis direction) is extremely weak, and in particular, almost no light exits from the back side of the main body case in the direction opposite to the light irradiation direction.
そのため、例えば、夜間歩行者がこの種の集光
照射携帯電灯を持つて前方足元を照らして歩行し
ている場合に、この歩行者の後方から走行してく
る自動車の運転者の位置からでは、歩行者の持つ
携帯電灯の光が目に入らず、その結果歩行者の発
見が遅れて事故の原因となることがあつた。 Therefore, for example, if a pedestrian is walking at night with this type of condensed light emitting portable light illuminating the front step, from the position of the driver of a car coming from behind the pedestrian, The light from a pedestrian's mobile light could not be seen, resulting in a delay in finding the pedestrian and causing an accident.
この考案は上述した従来の問題点に鑑みなされ
たもので、その目的は、電球からの光を集光して
有効に正面を照射するという本来の機能を損うこ
となく、電球からの光の一部を極めて高効率に導
き出して背面側への補助光として照射するように
した携帯電灯を提供することにある。 This idea was devised in view of the conventional problems mentioned above, and its purpose was to concentrate the light from the light bulb and effectively illuminate the front without impairing its original function. To provide a portable electric lamp in which a part of the light is led out with extremely high efficiency and irradiated to the back side as auxiliary light.
上記目的を達成するために、この考案は、本体
ケースの正面側から背面側に向けて内蔵され、正
面側の一端面が主照明用光学系の曲面鏡の反射面
の所定部位に露出していて、その一端面に電球か
らの光の一部が入射する光フアイバと、上記本体
ケースの背面に取り付けられ、上記光フアイバの
他端面が光学的に結合しており、該光フアイバに
導かれてきた光を拡散して上記本体ケースの背面
側に射出させる光拡散板とを設けたことを特徴と
する。 In order to achieve the above purpose, this device is built into the main body case from the front side to the back side, and one end surface on the front side is exposed at a predetermined part of the reflective surface of the curved mirror of the main illumination optical system. An optical fiber is attached to the back surface of the main body case, and the other end surface of the optical fiber is optically coupled to the optical fiber through which part of the light from the light bulb enters on one end surface of the optical fiber. The present invention is characterized in that a light diffusing plate is provided to diffuse the incoming light and emit it to the back side of the main body case.
以下、この考案の一実施例を図面に基づいて詳
細に説明する。 Hereinafter, one embodiment of this invention will be described in detail based on the drawings.
図は本考案を適用した携帯電灯の要部を中心に
示した全体図である。この携帯電灯は、本体ケー
ス１内に内蔵された電池（図示省略）によつて点
灯駆動される電球２と、この電球２の光を集光し
て上記本体ケース１の正面側に照射（矢印Ａ）す
る光学系３とを備えている。光学系３は放物面鏡
３ａおよび前面レンズ３ｂによつて構成されてい
る。前面レンズ３ｂは、単に素通しの透明板で形
成されることもある。放物面鏡３ａの焦点位置付
近に上記電球２が位置させられている。この電球
２は、本体ケース１の上部に配設された防水スイ
ツチＳ１によつて点灯制御される。 The figure is an overall view mainly showing the main parts of a portable electric lamp to which the present invention is applied. This portable light includes a light bulb 2 that is driven by a battery (not shown) built into the main body case 1, and a light bulb 2 that focuses the light from the light bulb 2 and irradiates it on the front side of the main body case 1 (arrow A) An optical system 3 is provided. The optical system 3 is composed of a parabolic mirror 3a and a front lens 3b. The front lens 3b may be formed simply from a transparent plate. The light bulb 2 is located near the focal point of the parabolic mirror 3a. The lighting of the light bulb 2 is controlled by a waterproof switch S1 disposed on the upper part of the main body case 1.
本体ケース１の内部には光フアイバ４が正面側
から背面側に向けて延設されている。この光フア
イバ４の一端部は、上記放物面鏡３ａに形成され
た孔５から鏡３ａの反射面側に突出させられてお
り、しかも光フアイバ４の突出端４ａは上記電球
２の方向に曲げられている。即ち、光フアイバ４
の突出端４ａ自体が電球２と光学系３の間に臨ん
だ光導入部となり、電球２の光の一部が光導入端
４ａの端面に入射し、光フアイバ４に導かれる。 Inside the main body case 1, an optical fiber 4 extends from the front side to the back side. One end of this optical fiber 4 is made to protrude from a hole 5 formed in the parabolic mirror 3a toward the reflective surface of the mirror 3a, and the protruding end 4a of the optical fiber 4 is directed toward the light bulb 2. It's bent. That is, the optical fiber 4
The protruding end 4a itself becomes a light introduction part facing between the light bulb 2 and the optical system 3, and a part of the light from the light bulb 2 enters the end face of the light introduction end 4a and is guided to the optical fiber 4.
また、本体ケース１の背面部には補助光照射部
としての光拡散板６が設けられている。この光拡
散板６は乳白色アクリル板等からなり、その一端
面に上記光フアイバ４の他端面が光学的に結合さ
れている。 Further, a light diffusing plate 6 as an auxiliary light irradiation section is provided on the back side of the main body case 1. The light diffusing plate 6 is made of a milky white acrylic plate or the like, and the other end surface of the optical fiber 4 is optically coupled to one end surface thereof.
この構成により、電球２から発せられる光の極
く一部が光フアイバ４の光導入端４ａから該フア
イバ４に入射して光学系３外にとり出され、その
とり出された光は光フアイバ４に導びかれて、本
体ケース１の背部の光拡散板６に出射させられ
る。この光拡散板６では光フアイバ４から入射し
た光が平均的に拡散され、その結果、光拡散板６
の光照射面６ａからはそれ程強くはないが、暗い
場所では充分に視認できる程度の補助光が光学系
３による光照射方向とは逆方向に照射（矢印Ｂ）
される。従つて、先に述べたような夜間の道路上
での歩行者による使用状態において、歩行者の後
方からの自動車の運転者の位置にて、携帯電灯の
正面側の光照明光が視認できなくても、本体ケー
ス１の背面側に発せられる補助光は容易に視認で
き、このような使用状態での安全性が向上する。
なお、ここで注目すべきことは、光照明光を得る
ために光学系３に対して光フアイバ４の端部４ａ
が極く僅かな障害となるだけで、正面側への集光
照明効果にはほとんど影響を与えないし、しか
も、そのように僅かな障害しか与えずしてとり出
した比較的少量の光が光フアイバ４によつて導か
れて、極めて高効率に補助照明光として活用され
ることである。 With this configuration, a small portion of the light emitted from the light bulb 2 enters the fiber 4 from the light introduction end 4a of the optical fiber 4 and is extracted from the optical system 3, and the extracted light is transmitted through the optical fiber 4. The light is guided to the light diffusing plate 6 on the back of the main body case 1 . In this light diffusing plate 6, the light incident from the optical fiber 4 is diffused evenly, and as a result, the light diffusing plate 6
From the light irradiation surface 6a, auxiliary light is emitted in the opposite direction to the light irradiation direction by the optical system 3, although it is not very strong, but is sufficient to be visible in a dark place (arrow B).
be done. Therefore, when used by pedestrians on the road at night as described above, the light illumination light from the front side of the mobile lamp cannot be seen by the driver of the car from behind the pedestrian. Also, the auxiliary light emitted to the back side of the main body case 1 can be easily recognized, improving safety in such usage conditions.
What should be noted here is that the end 4a of the optical fiber 4 is connected to the optical system 3 in order to obtain the illumination light.
This only creates a very slight hindrance and has almost no effect on the effect of concentrating the light on the front side. It is guided by the fiber 4 and utilized as supplementary illumination light with extremely high efficiency.
以上詳細に説明したように、この考案の携帯電
灯によれば、簡単な構成で極めて高効率に背面側
への補助照明を効果的に行なうことができる。 As described above in detail, the portable electric lamp of this invention can effectively provide auxiliary illumination to the rear side with extremely high efficiency with a simple configuration.
図は本考案を適用した携帯電灯の概略構成図で
ある。
１……本体ケース、２……電球、３……光学
系、３ａ……放物面鏡、３ｂ……レンズ、４……
光フアイバ、４ａ……光導入端、６……光拡散
板。
The figure is a schematic diagram of a portable electric lamp to which the present invention is applied. 1... Body case, 2... Light bulb, 3... Optical system, 3a... Parabolic mirror, 3b... Lens, 4...
Optical fiber, 4a... light introduction end, 6... light diffusing plate.
Claims (1)
される電球と、この電球の光を曲面鏡などで集光
して上記本体ケースの正面側に照射する光学系と
を備える携帯電灯において、上記本体ケースの正
面側から背面側に向けて内蔵され、正面側の一端
面が上記曲面鏡の反射面の所定部位に露出してい
て、その一端面に上記電球からの光の一部が入射
する光フアイバと、上記本体ケースの背面に取り
付けられ、上記光フアイバの他端面が光学的に結
合しており、該光フアイバに導かれた光を拡散し
て上記本体ケースの背面側に射出させる光拡散板
とを設けたことを特徴とする携帯電灯。 A portable electric lamp comprising a light bulb that is lit and driven by a battery built into a main body case, and an optical system that collects light from the light bulb with a curved mirror or the like and irradiates it to the front side of the main body case, wherein the main body Built-in from the front side of the case to the back side, one end surface on the front side is exposed at a predetermined part of the reflective surface of the curved mirror, and a part of the light from the light bulb enters the one end surface. A fiber is attached to the back side of the main body case, the other end surface of the optical fiber is optically coupled, and the light guided by the optical fiber is diffused and emitted to the back side of the main body case. A portable electric light characterized by being provided with a board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981074523U JPS6125121Y2 (en) | 1981-05-25 | 1981-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981074523U JPS6125121Y2 (en) | 1981-05-25 | 1981-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57186903U JPS57186903U (en) | 1982-11-27 |
| JPS6125121Y2 true JPS6125121Y2 (en) | 1986-07-29 |
Family
ID=29870292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981074523U Expired JPS6125121Y2 (en) | 1981-05-25 | 1981-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6125121Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4431080Y1 (en) * | 1967-08-26 | 1969-12-22 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5296585U (en) * | 1976-01-17 | 1977-07-19 |
-
1981
- 1981-05-25 JP JP1981074523U patent/JPS6125121Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4431080Y1 (en) * | 1967-08-26 | 1969-12-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57186903U (en) | 1982-11-27 |
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