JPH05217680A - Lighting equipment - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a lighting device capable of inspecting the non-lighting and abnormal lighting of a lighting lamp in the daytime and capable of performing the inspection quickly. [Structure] A detection value of a voltage detection means 71 and a current detection means 72 is taken in during a period in which a lighting control means 4 for controlling a lighting state of a cold cathode discharge lamp 3 lights a discharge lamp, and a voltage is a predetermined value or more. If there is, and the current is less than or equal to a predetermined value, an abnormal output is generated at least during the period in which the lighting control unit turns off the discharge lamp in accordance with the abnormality determination of the lighting state determination unit 9 and the lighting state determination unit. And an abnormality output means 41 for performing the above. Further, the lighting state determination means takes in the detected values of the current and the voltage a plurality of times within a predetermined period of the discharge lamp blinking cycle or more, and determines an abnormality when the voltage is a predetermined number of times or more and the current is a predetermined value or less. .

Description

Detailed Description of the Invention

[Object of the Invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device in which lighting is controlled to be turned on / off by lighting control means such as a photo switch for park and road lighting.

[0003]

2. Description of the Related Art Conventionally, as a lighting device for a park, a road, etc., there has been a lighting column using a lighting lamp composed of a cold cathode discharge lamp such as a mercury lamp, a metal halide lamp and a sodium lamp. This one turns on the illumination lamp at night and turns it off by the photo switch during the day. Therefore, in general, when inspecting the lamp for burnout of the illumination lamp, the inspector goes around to check for lamp burnout of many illumination columns when the illumination lamp is turned on at night.

[0004]

In recent years, labor costs at night have tended to rise, making it difficult to find a worker for inspection at night, and demand for an illumination device capable of performing daytime inspection is increasing. Can be considered. However, since it takes 5 to 7 minutes for the illumination lamp to be turned on, it takes a long time if the inspection of the illumination lamp is turned off during the daytime. If you check the lamp out by car during the day,
If the confirmation time is long, the vehicle is stopped near the lighting pole, which causes traffic congestion, which is not preferable.

The present invention has been made in view of the above problems, and an object thereof is to provide an illuminating device capable of inspecting the non-lighting of an illumination lamp in the daytime and capable of performing the inspection rapidly.

[0006]

An illumination device according to claim 1,
A cold cathode discharge lamp and a lighting device that lights this discharge lamp
Lighting control means such as a photo switch and a timer switch for controlling the lighting state of the discharge lamp, a voltage detection means for detecting a voltage applied to the discharge lamp from the lighting device, and a lighting device to supply the discharge lamp to the discharge lamp. The current detection means for detecting the current that is detected and the lighting control means take in the detection values of the voltage detection means and the current detection means within a period in which the discharge lamp is turned on, and the voltage is equal to or more than a predetermined value and the current is When the value is equal to or less than a predetermined value, an abnormality output is performed at least within a period in which the lighting control unit turns off the discharge lamp in accordance with the abnormality determination of the lighting state determination unit and the abnormality determination of the lighting state determination unit. And an abnormal output means.

According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the lighting state determination means takes in a detected value of current and voltage a plurality of times within a predetermined period that is equal to or longer than the discharge lamp blinking cycle, and sets the predetermined value. When the voltage is equal to or more than the number of times and the current is equal to or less than the predetermined value, the abnormality determination is performed.

[0008]

With the above structure, in the lighting device of claim 1, when the surroundings of the lighting device become dark, the lighting control means for controlling the lighting condition of the discharge lamp is brought into a lighting condition, and a voltage is applied from the lighting device to the discharge lamp. Then, the discharge lamp is turned on. When the surroundings of the lighting device become bright, the lighting control means for controlling the lighting state of the discharge lamp is turned off, the electric power is not energized from the lighting device to the discharge lamp, and the discharge lamp is turned off. When the lighting control means is in the lighting state, the lighting state determination means takes in the detection values of the voltage detection means and the current detection means, and makes an abnormality determination when the voltage is equal to or higher than a predetermined value and the current is equal to or lower than the predetermined value. Then, the abnormality output unit outputs the abnormality in accordance with the abnormality determination of the lighting state determination unit at least during the period in which the lighting control unit turns off the discharge lamp.

In the illumination device according to the second aspect, the lighting state determination means further takes in the detected values of the current and voltage a plurality of times within a predetermined period of the discharge lamp blinking cycle or more, and the voltage is a predetermined number of times or more. When the current is less than or equal to the predetermined value, the abnormality is determined.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment common to the inventions of claims 1 and 2 will be described below with reference to the drawings.

The present embodiment is an illumination column for road lighting. In FIG. 3 and FIG. 4, reference numeral 1 denotes a strut which is attached to the shoulder 2 of the road 2a with a lamp 3a having the discharge lamp 3 built-in attached to one end and a base 11 provided at the other end. A lighting control means 4 and a lamp burnout detection indicator 7 are attached to the middle of the outer surface of the pillar 1 below the lighting control means 4 with a metal band or the like, and a space is formed inside the pillar 1, and a proper place of the space is formed. A ballast 5 as a lighting device and a cutout switch 6 are provided in the. In addition, 12 is a pillar 1
Is a wiring opening for wiring inside and outside.

FIG. 2 shows the appearance of the lamp burn-out detection indicator 7, which is provided with a contact plate 15 attached to the column 1 on the back surface and a display cover 63 below. It should be noted that terminals 31, 33, 34, 35 described later are provided outside the detection display 7.

FIG. 1 shows the internal structure of the detection display 7 as a block diagram and shows the wiring relationship with other parts. In the figure, terminals 31 and 32 are externally connected to both ends of the light receiving element 4a of the photoswitch 4, terminals 34 and 32 are externally connected to both ends of the circuit opening / closing portion 4b of the photoswitch 4, and terminals 35 and 35 are externally lit. It is connected between the device 5 and the discharge lamp 3. Terminal 3
Reference numerals 1 and 32 are internally connected to the primary side of the transformer 22 via a fuse 21, terminals 34 and 32 are internally connected to a voltage detecting means 71 including a rectifier circuit 37 and a photocoupler 38, and terminals 35 and 35 are internal. In, it is connected to the current detection means 72 consisting of the current detector 39 and the signal conversion interface 40.

Reference numeral 9 denotes a modularized microcomputer as a lighting state determination means, and stores a CPU 52 as a central processing unit, a detection processing, a display processing program, abnormality determination base data, etc. on a bus 55. ROM 59, RAM 61 for storing detection data,
PI56 that inputs the voltage detection signal in parallel, ADC5 that takes in the current detection signal by analog / digital conversion
7. A PO 58 for parallel output of an abnormal output at the time of abnormality is arranged. The functional configuration of the microcomputer 9 can be achieved by random logic.

An OST 53 that externally generates a basic clock on the microcomputer 9 and a PST 54 that resets the power supply.
Is provided. In addition, the microcomputer 9 is provided with an LED driver (DR) 41 as an abnormal output means for the LED 62 which is externally emitted, and the LE 58 is output by the output of the PO 58 at the time of abnormality.
It drives so that D62 may be lighted. A plurality of LEDs 62 are connected as needed and are housed in the display cover 63. Since an LED that emits light generally has a narrow directivity, when it is used for a road light, for example, an LED mounted on a shoulder on the left lane side of the road has a warning indication of 20 to 20 from both the vehicle passing the left lane and the vehicle passing the right lane. Providing at least two of them so that they can be seen at 50 meters and giving directivity to different angles in two directions enables quick inspection work.
Further, if the magnetic reversal display plate is used as the display means for displaying the abnormal output, the abnormal display will not be difficult to see due to the effect of daylight in the daytime. The abnormal output may be signal generation means such as voice, infrared rays, and radio waves, in addition to the display means. For example, in the case of the radio signal generating means, when the receiving device is attached to the inspection vehicle and the vehicle passes near the lighting device,
The own lighting device address signal and the abnormality information signal emitted from the lighting device may be received, and only the information of the lighting device in which the abnormality has occurred may be fetched into the storage device connected to the receiving device. Road shoulders 2 and park 2 like 6
The lamp burn-out detection unit 7 is provided in the plurality of illumination lamps 1 provided in b, each detection unit 7 is connected to the local main terminal 73 in the switchboard 72 through the transmission line 71, and a plurality of local main terminals are further connected. 73 is connected to a central monitoring board 76 of a management center 75 by a transmission line 74 including an optical communication cable and a dedicated telephone line, and each detection unit 7 sends its own lighting device address signal and abnormality information signal to the management center 75. If you send it, you do not have to go to the site where the lighting system is installed. Further, in such a system, if the management center 75 remotely controls the lighting state of the light based on the time schedule, the photo switch does not have to be provided on the column 1. The electric power of the microcomputer 9 is the transformer 22.
It is supplied by the DC power supply 32 connected to the secondary side of the photo switch 4 when the light receiving element 4a of the photo switch 4 is not conducting.

FIG. 5 shows the processing of the CPU 52.

The detection process is started in step S1, and it is determined in step S2 whether the voltage (v) of the photo SW is ON (present). If yes (Y), the lamp burnout display is canceled in step S3. During the warming-up time, the lamp is not stably lit, so v = ON after step 10 in step S4.
Determine if it's been a minute. If no (N), it is determined in step S6 whether v = ON. If no, the process returns to the beginning, and if yes, the process returns to step S4. Step S4
If yes, it is determined in step S8 whether both v (voltage) i (current) are ON, and if yes, step S9
OK is loaded in the Q buffer. If no, step S1
At 0, it is judged whether v = ON and i = OFF (none), and y
If es, NG is accumulated in the Q buffer in step S11. If no, it is determined in step S12 whether both vi are OFF, and if yes, in step S13, OK is accumulated in the Q buffer. If no, v = OFF and i = ON, so a system abnormality is output as necessary and the determination is stopped. Next, in order to store a plurality of times of data in the Q buffer, it is determined in step S14 whether or not 25 minutes have elapsed since the data sampling time was waited. If no, steps S8 to S14 are repeated. If yes, it is determined in step S15 whether the voltage (v) of the photo SW is ON. If yes, the discharge lamp is still in the lighting mode. Therefore, in step S15, the contents of the Q buffer are checked to determine whether the lamp is out. To do. This judgment is, for example, a time (sampling cycle) that sufficiently exceeds the flashing cycle t of the lamp.
For example, in 25 minutes, data of presence / absence of a plurality of voltages and currents are fetched and accumulated, and the accumulated data is stored at the end of the sampling cycle.
It is checked whether or not there is one data with voltage and no current, or the number of data defined in consideration of the possibility that extinguishment occurs 1-2 times / day, for example, 3 or more, and if there is, a lamp burnout is determined. Eliminate 1 to 2 times / day. Then, in step S16, it is determined whether the lamp is out,
If yes, a lamp burnout display is set in step S18. If no, the process returns to step S1. Step S1
If the lamp burnout display is set in step 8, it is then determined in step S2 whether the voltage (v) of the photo SW is ON,
If the result is no, the lamp burnout is displayed.

In the present embodiment, the lamp burn-out display indicates that the voltage (v) of the photo SW is turned on after the lamp is replaced.
Although it is not automatically performed, the cut-off switch is opened and closed when the lamp is replaced, so that the lamp burn-out display may be eliminated by returning the cut-off switch. In the present embodiment, the judgment criterion in step S16 is “when all of the stored data is no voltage, no current, or with voltage, current is present. Lamp is normal. When there is one or a predetermined number of pieces of data ...
Have. The cold cathode discharge lamp lighting device according to the present embodiment has a certain range of the lamp current value and nothing else since a minute current flows even when the lamp is burnt out. However, the presence or absence of voltage or current may be simply determined depending on the lighting device.

In this embodiment, the cold cathode discharge lamp is shown, but the same applies to a light bulb. Further, when the discharge lamp used for the park / road lighting is not lit, it can be determined by the supply voltage “present” and the lamp current “absent” in the same manner. However, when the lamp is out, it may blink repeatedly. If this blinking lamp burnout is determined by the above logic, an appropriate lamp burnout can be determined.

[0020]

According to the lighting device of the first aspect of the present invention, the lighting control means for controlling the lighting state of the cold cathode discharge lamp and the voltage detection means within the period during which the lighting control means lights the discharge lamp, When the detected value of the current detection means is taken in and the voltage is equal to or higher than a predetermined value and the current is equal to or lower than the predetermined value, at least the lighting control is performed according to the abnormality determination of the lighting state determination means and the abnormality determination of the lighting state determination means. Since the means is provided with an abnormal output means for performing an abnormal output during the period in which the discharge lamp is turned off, the cold cathode discharge lamp can be inspected for non-lighting in the daytime, and the inspection can be performed quickly. it can. In the illumination device according to the invention of claim 2, in the configuration of the illumination device according to claim 1, the lighting state determining means takes in the detected values of the current and voltage a plurality of times within a predetermined period of the discharge lamp blinking period or more, and a predetermined number of times. When the voltage is equal to or higher than the predetermined value and the current is equal to or lower than the predetermined value, the abnormality determination is performed, so that the abnormal output can be appropriately output even in the case of abnormal lighting in which the cold cathode discharge lamp repeatedly blinks. . Therefore,
The cold cathode discharge lamp can be inspected for abnormal lighting such as non-lighting and repeated blinking in the daytime, and the inspection can be performed quickly.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main part of an embodiment of the inventions of claims 1 and 2. FIG.

FIG. 2 is a side view showing a main part of an embodiment of the inventions of claims 1 and 2;

FIG. 3 is a side view showing the outer appearance of an embodiment of the invention of claims 1 and 2.

FIG. 4 is a side view showing a part of a main part of an embodiment of the invention of claims 1 and 2 with a part thereof omitted.

FIG. 5 is a flowchart for explaining the operation of an embodiment of the inventions of claims 1 and 2.

FIG. 6 is a plan view schematically showing an installation state of an embodiment of the inventions of claims 1 and 2.

[Explanation of symbols]

3 ... Cold cathode discharge lamp, 5 ... Lighting device, 4 ... Lighting control means,
71 ... Voltage detection means, 72 ... Current detection means, 9 ... Lighting state determination means, 41 ... Abnormality output means.

Claims (2)

[Claims] 1. A cold cathode discharge lamp; a lighting device for lighting the discharge lamp; a lighting control means for controlling on / off of a lighting state of the discharge lamp; a lighting device energizing the discharge lamp. A voltage detecting means for detecting a voltage; a current detecting means for detecting a current supplied from the lighting device to the discharge lamp; and a voltage detecting means within a period in which the lighting control means lights the discharge lamp. And a detected value of the current detection means, and when the voltage is equal to or higher than a predetermined value and the current is equal to or lower than a predetermined value, a lighting state determination means; and at least a lighting state determination means; An illumination device, comprising: an abnormal output unit that performs an abnormal output during a period in which the lighting control unit turns off the discharge lamp. 2. The lighting state determination means takes in the detected values of the current and voltage a plurality of times within a predetermined period of the flashing cycle of the discharge lamp or more, and when the voltage is a predetermined number of times or more and the current is a predetermined value or less. The illumination device according to claim 1, wherein an abnormality determination is made at a certain time.