JP2003347073A - Lighting system for tunnel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system for a tunnel capable of suppressing power consumption to thereby be a simple system, while satisfying a design instruction of a Japan Highway Public Corporation. <P>SOLUTION: This lighting system 1 for the tunnel is provided with a luminaire 2, a normal power supply part 3, an emergency power supply part 4 having an uninterruptible power supply unit 4a and a private power generator 4b, a contact conversion part 5, a control part 6, a non-illustrated power failure detecting part 7. When the power failure detecting part 7 detects that power supply from a commercial power source is stopped, the luminaire 2 is continuously lighted by supplying power from the private power generator 4b after lighting the luminaire 2 for a prescribed time by supplying power from the uninterruptible power supply unit 4a. The control part 6 lights almost all luminaires 2 in a prescribed light control level when lighting the luminaires 2 by supplying power from at least the private power generator 4b. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for a tunnel used for lighting in a tunnel of an automobile road.

[0002]

2. Description of the Related Art This type of tunnel lighting device is designed such that when power supplied from a commercial power supply is stopped due to a power failure or the like (hereinafter, referred to as "design procedure") by the Japan Highway Public Corporation (hereinafter referred to as "design procedure"). At the time of a power failure, etc.), the brightness of the road surface in the tunnel is defined as shown in FIG.

[0003] (1) An uninterruptible power supply capable of generating a predetermined power at the time of a power failure or the like can turn on the lighting equipment with a power capacity of 10 minutes or more continuously at the time of a power failure or the like. And the brightness of the road surface when the lighting equipment is turned on by the uninterruptible power supply, when the lighting equipment is turned on by a normal power supply that generates predetermined power during normal times when no power failure occurs (Hereinafter, "when basic lighting"
That. ) Make the road surface brightness 1/8 or more. (2) After turning on the lighting equipment for a predetermined time by the uninterruptible power supply, the brightness of the road surface when the lighting equipment is turned on by the private power generator which can generate the predetermined power by its own means, It should be at least 1/4 of the road surface brightness during basic lighting.

Conventionally, this kind of tunnel lighting device satisfies the above-mentioned design guidelines by so-called thinned-out lighting as shown in FIG. That is, when the tunnel lighting device is turned on by the uninterruptible power supply immediately after a power failure or the like occurs, all of the lighting fixtures 2a and 2
When lighting 1/8 of the lighting fixtures 2a, 2e,... of b, 2c,... at regular intervals (hereinafter referred to as "1/8 lighting at power outage"), and then lighting with the private power generator, The lighting fixtures 2a, 2c, 2e,... Of 1/4 of all 2a, 2b, 2c,... Are turned on at regular intervals (hereinafter, referred to as "1/4 lighting at power failure").

Thus, this tunnel lighting device can be turned on by the uninterruptible power supply immediately after a power failure to make it 1/8 or more of the brightness of the road surface at the time of the basic lighting. After being turned on by the device, the brightness of the road surface at the time of the basic lighting is set to 1/4 or more, thereby satisfying the above-mentioned design guidelines.

[0006]

By the way, in the above-mentioned tunnel lighting device, the lighting fixtures 2a, 2c, 2e,... To be turned on by thinning-out lighting are turned on at the same dimming level as the basic lighting. In addition, when it is turned on by the private power generator, it is 1 /
4 must be turned on. As a result, a relatively large amount of electric power is required when the self-powered generator is turned on, so that the size of the private power generator needs to be increased, and the size of the tunnel lighting device has been increased. .

[0007] The present invention has been made in view of the above circumstances, and its purpose is to satisfy the design guidelines and
An object of the present invention is to provide a tunnel lighting device which can reduce power consumption and is therefore simplified.

[0008]

According to a first aspect of the present invention, there is provided a lighting device for a tunnel, comprising: a plurality of lighting devices for illuminating the inside of the tunnel; A power supply unit and an emergency power supply unit having an uninterruptible power supply device capable of generating predetermined power when power is not supplied from a commercial power supply and a private power generation device capable of generating predetermined power by its own means. A contact converter connected between the normal power supply unit and the emergency power supply unit and the lighting equipment to switch a power supply for supplying power to the lighting equipment; A control unit that controls the dimming level, and a power failure detection unit that is connected to the contact conversion unit and the control unit and detects the presence or absence of power supply from the commercial power supply, and that the power supply from the commercial power supply is stopped. When the power detection unit detects, the power failure detection unit transmits a detection signal to the contact conversion unit and the control unit, and based on the detection signal, the contact conversion unit and the control unit perform a predetermined operation, and the uninterruptible power supply device A lighting device for a tunnel that supplies power from a private power generator to light the lighting device for a predetermined time and then continuously supplies the power from the private power generator to light the lighting device, wherein the control unit includes at least a private power generator. When the lighting equipment is turned on by supplying power from the lighting apparatus, almost all the lighting equipment is turned on at a predetermined dimming level.

According to a second aspect of the present invention, in the tunnel lighting device according to the first aspect of the present invention, the predetermined dimming level of the lighting fixture is such that the predetermined dimming level of the road surface when the power is supplied from the private power generator and turned on. The brightness is about one-eighth of the brightness of the road surface when the power is normally supplied from the power supply and turned on.
It is more than about.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 show an embodiment of a tunnel lighting device according to the present invention. FIG.
Is a block diagram.

When the supply of commercial power is stopped due to a power failure or the like, this tunnel lighting device 1 is lit by supplying power from an emergency power supply. The lighting device 2, the normal power supply unit 3, It has an emergency power supply unit 4, a contact conversion unit 5, a control unit 6, and a power failure detection unit 7. The power failure detection unit 7 is not shown in FIG.

The lighting fixture 2 illuminates a road surface or the like in a tunnel, and includes a plurality of lighting fixtures 2a, 2b, 2c,
…have. And each lighting fixture 2a, 2b, 2
are connected to a contact converter 5 and a controller 6 via a power supply line 8 and a signal line 9, respectively.

The normal power supply unit 3 is supplied with electric power from a commercial power supply and generates a predetermined electric power. Each of the lighting fixtures 2a, 2b, and 2c is connected to the power supply line 8, the contact conversion unit 5, and the power supply line 8. , ... connected. Then, at a normal time when no power failure or the like occurs, each of the lighting fixtures 2a, 2b, 2
A predetermined power for lighting c,... is supplied.

The emergency power supply unit 4 is capable of generating a predetermined power at the time of a power failure or the like, and includes an uninterruptible power supply 4a and a private power generator 4b. The uninterruptible power supply 4a is connected to each of the lighting fixtures 2a, 2b, 2c,... Via the power supply line 8, the contact converter 5, and the power supply line 8, and is continuously operated for 10 minutes or more immediately after a power failure or the like occurs. Then, at a predetermined dimming level, each lighting fixture 2a, 2b, 2c,.
Has a power capacity capable of turning on. The private power generator 4b is capable of generating predetermined power by its own means, and each of the lighting fixtures 2a, 2b, 2c, … And connected. This private power generation device 4b turns on each lighting fixture 2a, 2b, 2c,... For a predetermined time by the uninterruptible power supply 4a,
Each lighting fixture 2a, 2b, 2c,... Is continuously turned on by a predetermined power generated by its own means.

The contact converter 5 is provided for each of the lighting fixtures 2a, 2b,
The power supply to the normal power supply unit 3 and the emergency power supply unit 4 are switched through a power supply line 8.
, And to the control unit 6 via the signal line 9.

The control unit 6 controls each of the lighting fixtures 2a, 2b, 2
control the dimming level of each of the lighting fixtures 2a, 2b, 2c,... via a signal line 9;
Is connected to

The power failure detection unit 7 includes a predetermined sensor for detecting the presence or absence of power supply from a commercial power supply, and is connected to the contact conversion unit 5 and the control unit 6 via a signal line 9. When detecting that the power supply from the commercial power supply is stopped due to a power failure or the like, the power failure detection unit 7 transmits a predetermined detection signal to the contact conversion unit 5 and the control unit 6 via the signal line 9.

Next, the control of the dimming level in the tunnel lighting device 1 will be described with reference to FIGS.

FIG. 3 shows an average road surface luminance L (c) having similar visibility with the luminance contrast C of a road obstacle as a parameter.
d / m 2) and the luminance uniformity Uo (Japan Road Association: Road Lighting Facility Installation Standards / Commentary, 1981). According to this, between the average road surface luminance L and the luminance uniformity Uo, K is a coefficient, and L = K /
Uo2.

A general highway tunnel, for example, the overall width of the tunnel is 11.05 (m), and the width of the roadway is 7.
0 (m), the type of pavement is asphalt (road surface reflection characteristics C
2) The lighting fixtures are located at 3.855 from the center of the tunnel.
(M), the illumination rate is 0.45, the maintenance rate is 0.55, the lamp luminous flux is 9180 (lm), and the design reference road surface luminance is 4.5.
(Cd / m 2), the brightness uniformity Uo of the tunnel basic portion is Uo = 0.39 (1/4 lighting at power failure),
Uo = 0.12 (1/8 lighting at power failure), Uo = 0.68
(During the day).

[0022] With this, the basic tunnel section is turned off at 1 /
When four lights are turned on, the value of the coefficient K is as follows: K = L × Uo2 = 4.5 / 4 × (0.39) 2 ≒ 0.1
7 As a result, as shown in FIG. 4, when almost all the lighting fixtures 2 are turned on at a predetermined dimming level (hereinafter, referred to as “lighting fixtures 2”).
It is called "all lighting." ), The brightness L of the road surface corresponding to 1/4 lighting at the time of a power failure can be set as follows: L = K / Uo2 ≒ 0.17 / (0.68) 2 ≒ 0.37.

In this case, the power consumption of the luminaire 2 is (1−0.37 / (4.5 / 4)) × 100 ≒ 67 compared to the case where the lighting fixture 2 is decimated and turned on. % Power consumption can be saved.

Thus, the lighting device for tunnel 1 shown in FIG.
As shown in, when the power failure detection unit 7 detects that the power supply from the commercial power supply has stopped, the power failure detection unit 7 transmits a detection signal to the contact conversion unit 5 and the control unit 6, and based on the detection signal, The contact conversion unit 5 and the control unit 6 start a predetermined operation, supply power from the uninterruptible power supply 4a, and
Is turned on for a predetermined time, and then the power is supplied from the private power generator 4b to continuously turn on the lighting fixture 2.

Therefore, this tunnel lighting device 1
Indicates that when the supply of power from the commercial power supply is stopped due to a power failure or the like, and at least when the lighting fixture 2 is turned on by supplying power from the private power generator 4b, almost all of the lighting fixtures 2a, 2b, and 2c ,... Are turned on at a predetermined dimming level, so that the brightness uniformity is improved. Therefore, even if the average road surface brightness is reduced, a predetermined visibility in the tunnel can be secured.

The lighting fixture 2 has a dimming level of
The brightness of the road surface when the power is supplied from the in-house power generation device 4b and turned on is about ８ or more of the brightness of the road surface when the power is normally supplied from the power supply unit 3 and turned on. To meet the design guidelines,
Since the power consumption can be reduced, the private power generator 4b
Can be reduced in size, whereby the tunnel lighting device 1 can be simplified.

[0027]

According to the lighting device for a tunnel according to the first aspect of the present invention, almost all the lighting fixtures are used when the power supply from the commercial power supply is stopped due to a power failure or the like and the power is supplied from the emergency power supply unit. Because it is lit at a predetermined dimming level,
The brightness uniformity is improved. For this reason, even if the average road surface luminance is reduced, a predetermined visibility in the tunnel can be secured, so that the power consumption can be suppressed while satisfying the design guidelines. It will be simple.

According to a second aspect of the present invention, there is provided the tunnel lighting device according to the first aspect, wherein the predetermined dimming level of the lighting fixture is such that a predetermined dimming level of the road surface when the power is supplied from the private power generator and the road is lit. The brightness is about one-eighth of the brightness of the road surface when it is lit by being supplied with power from the normal power supply unit.
Therefore, the power consumption of the lighting fixture can be further reduced. This reduces the size of the equipment related to the private power generation device, so that the tunnel lighting device is further simplified.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a tunnel lighting device according to the present invention.

FIG. 2 is a block diagram of the same.

FIG. 3 shows an average road surface luminance L and a luminance uniformity Uo having similar visibility by using a luminance contrast C of a road obstacle as a parameter.
6 is a graph showing a relationship with the graph.

FIG. 4 is a diagram showing a temporal change in road surface brightness when a power failure or the like occurs in the tunnel lighting device according to the present invention.

FIG. 5 is a diagram showing a temporal change in road surface brightness when a power failure or the like occurs in a conventional tunnel lighting device.

FIG. 6 shows a state in which the lighting equipment is thinned and lighted in the tunnel lighting device of the above, and FIG.
FIG. 8B shows 1/4 lighting at the time of a power failure, in which 1/4 of the lighting fixtures are turned on at regular intervals.

[Explanation of symbols]

1 Tunnel lighting device 2 Lighting equipment 3 Normal power supply 4 emergency power supply 4a Uninterruptible power supply 4b Private power generator 5 Contact converter 6 control unit 7 Power failure detection section

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Seigo Mori             1048 Kadoma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.             In the formula company F term (reference) 3K082 AA42 AA64 BA55 BA58 BD37                       EA01 EA04

Claims (2)

[Claims] 1. A plurality of luminaires for illuminating the inside of a tunnel, a normal power supply unit for generating a predetermined power when supplied from a commercial power supply, and a predetermined power supply when no power is supplied from the commercial power supply. An emergency power supply unit having an uninterruptible power supply device capable of generating power and a private power generation device capable of generating predetermined power by its own means, and connected between the normal power supply unit and the emergency power supply unit and the lighting equipment. A contact converter for switching a power supply for supplying power to the lighting fixture, a controller connected between the lighting fixture and the contact converter for controlling the dimming level of the lighting fixture, a contact converter and a controller A power failure detection unit that detects whether power is supplied from the commercial power supply when the power failure detection unit detects that power supply from the commercial power supply has stopped. To After transmitting the detection signal, the contact conversion unit and the control unit execute a predetermined operation based on the detection signal, supply power from the uninterruptible power supply, turn on the lighting fixture for a predetermined time, and then generate power in-house. A tunnel lighting device that supplies power from the device and continuously lights the lighting device, wherein the control unit is configured to supply power from the private power generation device to light the lighting device, A lighting device for a tunnel, wherein the lighting device is turned on at a predetermined dimming level. 2. The predetermined dimming level of the lighting device is such that the brightness of the road surface when the power is supplied from the private power generator and the road surface is turned on when the power is normally supplied from the power supply unit and turned on. 2. The lighting device for a tunnel according to claim 1, wherein the brightness of the road surface is about 1/8 or more.