JP3915321B2

JP3915321B2 - Tunnel lighting

Info

Publication number: JP3915321B2
Application number: JP15468299A
Authority: JP
Inventors: 俊成松井; 康伸住吉
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-06-02
Filing date: 1999-06-02
Publication date: 2007-05-16
Anticipated expiration: 2019-06-02
Also published as: JP2000348504A

Description

【０００１】
【発明の属する技術分野】
この発明は、トンネル用照明器具に関するものである。
【０００２】
【従来の技術】
従来、トンネル内を投光器により照明してプロビームを行なう、すなわち先行車を追従しながら走行するドライバーに対し、走行方向に光を照射し、先行車の背面を照らすことにより先行車の視認性を高めることが考えられた。
【０００３】
【発明が解決しようとする課題】
しかし、投光器で運転者の視線方向に投射する場合、適切な配光が得られなかった。また器具高さすなわち器具の厚さが大きくなり、トンネル内の有効高さに対する制約になった。また自動清掃ができない等の問題があった。
【０００４】
したがって、この発明の目的は、トンネル内の有効高さの制約を少なくできるトンネル用照明器具を提供することである。
【０００５】
【課題を解決するための手段】
請求項１記載のトンネル用照明器具は、光源と、この光源がほぼ焦点位置となるように配置される放物面を有する反射鏡と、前記反射鏡を間にして前記光源と反対側に配置され前記光源を点灯する点灯装置とを器具本体内に有し、前記反射鏡を前記器具本体の下面の透光開口に臨ませ、前記透光開口をフラットパネルを用いた透光パネルで覆ってトンネルの内面に設置されるトンネル用照明器具において、
前記反射鏡は、その光軸が前記透光パネルと鋭角的に交差するように配置されるとともに前記光軸に対して上面側が前記光軸方向に長く下面側が前記光軸方向に短く形成されたものであり、前記光軸が前記トンネル内の車輛進行方向に向くように前記器具本体が前記トンネル内に設置されるとともに、
車輛の進入口方向に向いた視線誘導用反射面を、前記反射鏡の前記光軸に対する前記上面側であって前記反射鏡の車両進行方向側の先端を略垂直に折曲することにより形成したことを特徴とするものである。
【０００６】
請求項１記載のトンネル用照明器具によれば、光源の光は反射鏡により光軸方向すなわち車輛進行方向に反射するので、プロビームが可能である。しかも従来例と比較してトンネル内の有効高さの制約を低減てき、適切な配光も得やすい。
前記点灯装置が、前記反射鏡を間にして前記光源と反対側に配置されることにより、光源の熱の点灯装置への影響を極力抑えることができ、器具の小型化を図れる。透光パネルにフラットパネルを採用することにより、自動清掃にも対応可能である。前記反射鏡に車輛の進入口方向に向いた視線誘導用反射面を設けたため、視線誘導用反射鏡により反射された光がドライバーに認識され、トンネル内の車道の形状がわかりやすく運転しやすくなる視線誘導効果が得られる。
【００１３】
【発明の実施の形態】
この発明の第１の実施の形態を図１から図４により説明する。すなわち、このトンネル用照明器具は、図１および図２において、光源３と、この光源３がほぼ焦点位置となるように配置される放物面を有する反射鏡２と、光源３を点灯する点灯装置４とを器具本体１内に有し、トンネル９の内面に設置される。器具本体１は例えばステンレス鋼板製の下面開口の箱形で、下面開口に蝶番１７を介して蓋１３を取付けている。１４は蓋１３のラッチ、１５は本体取付部、１６はケーブルグランドである。
【００１４】
反射鏡２は器具本体１の下面の透光開口７に臨ませ、透光開口７を透光パネル５で覆っている。透光開口７は蓋１３に形成し、透光パネル５を設けている。透光パネル５は例えば強化ガラス等を用いたフラットパネルとしている。
【００１５】
この反射鏡２は、その光軸１０が透光パネル５と鋭角的に交差するように反射鏡２が器具本体１内に配置されるとともに、光軸１０に対して非対称にカット、すなわち上面１１側が光軸１０の方向に長く、下面１２側が光軸方向に短く形成され、例えばアルミニウム板により造られる。また光軸１０がトンネル９内の車輛進行方向Ａに向くように器具本体１がトンネル９内に設置される。また反射鏡２に車輛の進入口方向に向いた視線誘導用反射面６を反射鏡２の光軸１０に対する上面１１側の先端近傍に設けている。Ｌは光源３の直接光および反射光の進行方向の光である。Ｌｂは視線誘導用反射面６を反射する光であり、光Ｌと反対方向である。
【００１６】
点灯装置４は反射鏡２を間にして光源１０と反対側に配置されている。実施の形態では器具本体１の一側に光源３が配置され、他側に点灯装置４が配置されている。
【００１７】
図３はトンネル内の車１９、２０の走行状態を示し、車１９、２０の進行方向Ａに光Ｌが放射されているため、光Ｌが先行車２０の後面を直接または地面を反射して照明し、後続車１９の視認性を高めることがわかる。
【００１８】
図４は、器具本体１ａ、１ｂの設置位置を示し、器具本体１ａはトンネル９の入口照明（プロビーム）であり、器具本体１ｂはトンネル９の出口照明（プロビーム）である。
【００１９】
第１の実施の形態によれば、光源３の光は反射鏡２により光軸方向すなわち車輛進行方向Ａに反射するので、プロビームが可能である。しかも従来例と比較してトンネル９内の有効高さの制約を低減でき、適切な配光も得やすい。
【００２０】
光源３と点灯装置４を器具本体１内で対面に配置することにより、光源３の熱の点灯装置４への影響を極力抑えることができ、器具の小型化を図れる。透光パネル５にフラットパネルを採用することにより、自動清掃にも対応可能である。
【００２１】
視線誘導用反射面６により反射された光がドライバーに認識され、トンネル９内の車道の形状がわかりやすく運転しやすくなる視線誘導効果が得られる。
【００２２】
この発明の第２の実施の形態を図５により説明する。すなわち、このトンネル用照明器具は、第１の実施の形態において視線誘導用反射面６を設けない形態であり、その他は第１の実施の形態と同様である。
【００２３】
【発明の効果】
請求項１記載のトンネル用照明器具によれば、光源の光は反射鏡により光軸方向すなわち車輛進行方向に反射するので、プロビームが可能である。しかも従来例と比較してトンネル内の有効高さの制約を低減てき、適切な配光も得やすい。
前記点灯装置が、前記反射鏡を間にして前記光源と反対側に配置されることにより、光源の熱の点灯装置への影響を極力抑えることができ、器具の小型化を図れる。透光パネルにフラットパネルを採用することにより、自動清掃にも対応可能である。前記反射鏡に車輛の進入口方向に向いた視線誘導用反射面を設けたため、視線誘導用反射鏡により反射された光がドライバーに認識され、トンネル内の車道の形状がわかりやすく運転しやすくなる視線誘導効果が得られる。
【図面の簡単な説明】
【図１】この発明の第１の実施の形態の一部破断側面図である。
【図２】照明器具の前面を正面にみた正面図である。
【図３】トンネルの縦断面図である。
【図４】トンネルの横断面図である。
【図５】第２の実施の形態の断面図である。
【符号の説明】
１器具本体
２反射鏡
３光源
４点灯装置
５透光パネル
６視線誘導用反射面
７透光開口
１０光軸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tunnel lighting fixture.
[0002]
[Prior art]
Conventionally, the interior of a tunnel is illuminated with a projector to perform a pro beam, that is, a driver traveling while following a preceding vehicle is irradiated with light in the traveling direction, and the back of the preceding vehicle is illuminated to improve the visibility of the preceding vehicle It was thought that.
[0003]
[Problems to be solved by the invention]
However, when projecting in the direction of the driver's line of sight with a projector, an appropriate light distribution could not be obtained. In addition, the height of the device, that is, the thickness of the device has increased, which has become a restriction on the effective height in the tunnel. There were also problems such as inability to perform automatic cleaning.
[0004]
Accordingly, an object of the present invention is to provide a lighting device for a tunnel that can reduce the restriction on the effective height in the tunnel.
[0005]
[Means for Solving the Problems]
The lighting device for a tunnel according to claim 1, wherein the light source, a reflecting mirror having a paraboloid disposed so that the light source is substantially in a focal position, and the light source disposed on the opposite side of the light source. It is and a lighting device for lighting the light source into the instrument body, the reflecting mirror to face the lower surface of the light transmitting openings of the instrument body, covers the translucent opening in the translucent panel using flat panel In tunnel lighting equipment installed on the inner surface of the tunnel,
The reflecting mirror is disposed so that the optical axis thereof intersects the translucent panel at an acute angle, and the upper surface side is long in the optical axis direction and the lower surface side is short in the optical axis direction with respect to the optical axis. The instrument body is installed in the tunnel so that the optical axis is in the vehicle traveling direction in the tunnel ,
The reflecting surface for guiding the line of sight facing the entrance direction of the vehicle is formed by bending the tip of the reflecting mirror on the upper surface side with respect to the optical axis and on the vehicle traveling direction side of the reflecting mirror substantially vertically. It is characterized by this.
[0006]
According to the tunnel lighting fixture of the first aspect, since the light from the light source is reflected by the reflecting mirror in the optical axis direction, that is, the vehicle traveling direction, a pro-beam is possible. In addition, the effective height restriction in the tunnel is reduced as compared with the conventional example, and appropriate light distribution is easily obtained.
By arranging the lighting device on the side opposite to the light source with the reflecting mirror in between, the influence of the heat of the light source on the lighting device can be suppressed as much as possible, and the size of the appliance can be reduced. By adopting a flat panel for the translucent panel, automatic cleaning can be supported. Since the reflecting mirror is provided with a reflecting surface for guiding the line of sight toward the entrance of the vehicle, the light reflected by the reflecting mirror for guiding the line of sight is recognized by the driver, and the shape of the roadway in the tunnel is easy to understand and easy to drive. A gaze guidance effect is obtained.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, this tunnel illuminator in FIGS. 1 and 2 is a light source 3, a reflecting mirror 2 having a paraboloid arranged so that the light source 3 is substantially in a focal position, and a lighting for turning on the light source 3. possess a device 4 to the instrument body 1, it is installed on the inner surface of the tunnel 9. The instrument main body 1 has a box shape with a lower surface opening made of, for example, a stainless steel plate, and a lid 13 is attached to the lower surface opening via a hinge 17. Reference numeral 14 denotes a latch of the lid 13, 15 denotes a main body attaching portion, and 16 denotes a cable gland.
[0014]
The reflecting mirror 2 faces the light transmitting opening 7 on the lower surface of the instrument main body 1, and the light transmitting opening 7 is covered with the light transmitting panel 5 . The translucent opening 7 is formed in the lid 13 and the translucent panel 5 is provided. The translucent panel 5 is a flat panel using, for example, tempered glass.
[0015]
The reflecting mirror 2 is disposed in the instrument main body 1 so that the optical axis 10 intersects the translucent panel 5 at an acute angle, and is cut asymmetrically with respect to the optical axis 10, that is, the upper surface 11. The side is long in the direction of the optical axis 10 and the bottom surface 12 side is short in the direction of the optical axis, and is made of, for example, an aluminum plate. In addition, the instrument body 1 is installed in the tunnel 9 so that the optical axis 10 faces the vehicle traveling direction A in the tunnel 9. The reflecting mirror 6 is provided with a reflecting surface 6 for guiding the line of sight directed toward the entrance of the vehicle near the tip on the upper surface 11 side of the optical axis 10 of the reflecting mirror 2. L is the light in the traveling direction of the direct light and the reflected light of the light source 3. Lb is the light reflected from the line-of-sight guidance reflecting surface 6, and is in the direction opposite to the light L.
[0016]
The lighting device 4 is disposed on the side opposite to the light source 10 with the reflecting mirror 2 in between. In the embodiment, the light source 3 is arranged on one side of the instrument body 1 and the lighting device 4 is arranged on the other side.
[0017]
FIG. 3 shows the traveling state of the cars 19 and 20 in the tunnel. Since the light L is emitted in the traveling direction A of the cars 19 and 20, the light L reflects directly on the rear surface of the preceding vehicle 20 or on the ground. It can be seen that the visibility of the following vehicle 19 is enhanced by lighting.
[0018]
FIG. 4 shows the installation positions of the instrument bodies 1a and 1b. The instrument body 1a is the entrance illumination (pro beam) of the tunnel 9, and the instrument body 1b is the exit illumination (pro beam) of the tunnel 9.
[0019]
According to the first embodiment, since the light from the light source 3 is reflected by the reflecting mirror 2 in the optical axis direction, that is, the vehicle traveling direction A, a pro-beam is possible. In addition, the effective height restriction in the tunnel 9 can be reduced as compared with the conventional example, and appropriate light distribution can be easily obtained.
[0020]
By arranging the light source 3 and the lighting device 4 so as to face each other in the appliance main body 1, the influence of the heat of the light source 3 on the lighting device 4 can be suppressed as much as possible, and the appliance can be miniaturized. By adopting a flat panel for the translucent panel 5, it is possible to cope with automatic cleaning.
[0021]
The light reflected by the line-of-sight guidance reflecting surface 6 is recognized by the driver, and the line-of-sight guidance effect that makes the shape of the roadway in the tunnel 9 easy to understand and easy to drive is obtained.
[0022]
A second embodiment of the present invention will be described with reference to FIG. That is, this tunnel illuminating device has a configuration in which the line-of-sight guiding reflecting surface 6 is not provided in the first embodiment, and the others are the same as those in the first embodiment.
[0023]
【The invention's effect】
According to the tunnel lighting fixture of the first aspect, since the light from the light source is reflected by the reflecting mirror in the optical axis direction, that is, the vehicle traveling direction, a pro-beam is possible. In addition, the effective height restriction in the tunnel is reduced as compared with the conventional example, and appropriate light distribution is easily obtained.
By arranging the lighting device on the side opposite to the light source with the reflecting mirror in between, the influence of the heat of the light source on the lighting device can be suppressed as much as possible, and the size of the appliance can be reduced. By adopting a flat panel for the translucent panel, automatic cleaning can be supported. Since the reflecting mirror is provided with a reflecting surface for guiding the line of sight toward the entrance of the vehicle, the light reflected by the reflecting mirror for guiding the line of sight is recognized by the driver, and the shape of the roadway in the tunnel is easy to understand and easy to drive. A gaze guidance effect is obtained.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of a first embodiment of the present invention.
FIG. 2 is a front view of the lighting fixture as seen from the front.
FIG. 3 is a longitudinal sectional view of a tunnel.
FIG. 4 is a cross-sectional view of the tunnel.
FIG. 5 is a cross-sectional view of a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Reflective mirror 3 Light source 4 Lighting device 5 Translucent panel 6 Reflecting surface 7 for visual line guidance Translucent opening 10 Optical axis

Claims

A light source, a reflecting mirror having a paraboloid disposed so that the light source is substantially in a focal position, and a lighting device that is disposed on the opposite side of the light source with the reflecting mirror interposed therebetween and that lights the light source Tunnel lighting installed in the inner surface of the tunnel, having in the instrument body, facing the translucent opening on the lower surface of the instrument body, and covering the translucent opening with a translucent panel using a flat panel In the instrument,
The reflecting mirror is disposed so that the optical axis thereof intersects the translucent panel at an acute angle, and the upper surface side is long in the optical axis direction and the lower surface side is short in the optical axis direction with respect to the optical axis. And the instrument body is installed in the tunnel so that the optical axis is in the vehicle traveling direction in the tunnel ,
The reflecting surface for guiding the line of sight facing the entrance direction of the vehicle is formed by bending the tip of the reflecting mirror on the upper surface side with respect to the optical axis and on the vehicle traveling direction side of the reflecting mirror substantially vertically. A lighting device for a tunnel characterized by that.