JP3890645B2 - Lighting device - Google Patents

Description

さらに、この当日の点灯開始時刻を前日の点灯開始時刻から２４時間後とし、翌日の点灯開始時刻までの時間測定の開始時刻とし、また前日の日照時間を当日の日照時間として記録するものである。
【００２０】
以上の第４及び第５の実施例においては、当日より前の日照時間の代表値として前日の日照時間を記録しているが、当日より前の所定日数について日照時間を記録し、これらがすべて略一致した場合において、前日の日照時間を代表値として採用してもよい。この略一致の条件を満たさない場合は、上記第４及び第５の実施例には従わず、当日の日照時間にのみ従って補正時間を設定する。これにより電源投入直後で前日の日照時間や点灯開始時刻の記録が無い場合の誤動作を防止する。
【００２１】
これまでに挙げたすべての実施例において、タイマ回路を内蔵したマイコン等を用いてタイマ補正手段とタイマ部をＣＰＵ内に包括する構成も可能である。また、低照度検知部のコンパレータ部、さらにＯＲ回路をＣＰＵ内に包括する構成としてもよい。さらに、すべての実施例において、照明灯を白熱灯とし、トライアックで調光制御しているが、照明灯は蛍光灯でもよく、調光手段は一般の蛍光灯の調光制御手段でもよい。また、タイマ補正手段の補正時間の設定値についても図に示したような連続的な値でなく、離散的な、たとえば階段状の値でもよい。
【００２２】
また、すべての実施例において、周囲の照度が所定値よりも低くなったことを検知するにあたり、所定の時間、所定の周期でコンパレータ２２の出力をサンプリングし、確実に周囲照度が暗くなったことを確認するような条件付きで低照度検知信号ＬＰを送出することで、一時的な照度の低下に対して誤動作することを防止できる。
【００２３】
【発明の効果】
本発明によれば、日没時刻が季節によって異なった場合でも、照明灯を消灯させる時刻をおよそ一定に保つことができる。したがって、無駄に長く点灯させることも、まだ照明灯が必要な時間であるにもかかわらず、消灯してしまうこともない。また、精密な時計などを用いることなく、簡単なタイマ回路とタイマ時間補正手段を用いることで、照明灯を必要とする時刻まで点灯させることが可能であり、時刻合わせの必要もない。
【図面の簡単な説明】
【図１】本発明の第１実施例の構成を示すブロック回路図である。
【図２】本発明の第１実施例の動作を示す説明図である。
【図３】本発明の第２実施例の動作を示す説明図である。
【図４】本発明の第３実施例の動作を示す説明図である。
【図５】本発明の第１実施例の一変形例を示すブロック回路図である。
【図６】従来例の構成を示すブロック回路図である。
【図７】従来例の動作波形図である。
【符号の説明】
１０ 人体検知手段
２０ 低照度検知部
４０ 照明制御手段
５０ 照明灯
６１ タイマ部
６２ タイマ補正手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an illuminating device that uses a human body detection sensor and an illuminance detection sensor to turn on, turn off, or dimming an illuminating lamp according to the presence or illuminance of a person within a control range.
[0002]
[Prior art]
Conventionally, as an illuminating device including a human body detection sensor and an illuminance detection sensor, there is one disclosed in JP-A-2-15596. In this conventional example 1, the illuminance detection unit detects this when the surroundings become dark, the light source is turned on according to the detection result, the light source is turned off after a lapse of a predetermined time, and the human body is also turned off after the light is turned off. Each time it is detected, the light source is turned on for a required time.
[0003]
Further, there is one disclosed in Japanese Patent Laid-Open No. 3-67492 as one capable of dimming and lighting. This conventional example 2 is turned on at a low illuminance ratio when the illuminance of the illumination control area is less than or equal to the set illuminance, and when a person enters an area that is in a lighting state at this low illuminance ratio, it switches to lighting at a high illuminance ratio, The lighting state at a high illuminance ratio is maintained for a predetermined time.
[0004]
In the conventional example 1 described above, the power is reduced by turning off the light after a predetermined time has elapsed after sunset (after the traffic is low), and then turning it on only when a person is present. To do. Further, by adopting the method of Conventional Example 1 in Conventional Example 2 and having the configuration shown in FIG. 6, the light is turned on at a low illuminance ratio for a predetermined time after sunset, and then turned off, It is possible to reduce power consumption by turning on only when it exists.
[0005]
In the case of this example, the human body detection means 10 outputs a human body detection signal HQ when detecting the presence of a person in the control region. The low illuminance detection unit 20 outputs a low illuminance detection signal LP from the comparator 22 when the surroundings become dark and falls below the set illuminance. The timer unit 6 receives the low illuminance detection signal LP, starts operation, and outputs a lighting signal S for a preset time. If the lighting signal S is input, the CPU 44 outputs a low illuminance ratio lighting signal SL, and when both the human body detection signal HQ and the low illuminance detection signal LP are input, regardless of the presence or absence of the lighting signal S, A high illumination ratio lighting signal SH is output. An example of the waveforms of the high illumination ratio lighting signal SH, the low illumination ratio lighting signal SL, and the AC power supply 1 is shown in FIG. Based on this signal, the triac 43 is turned on / off, and the illumination lamp 50 is dimmed.
[0006]
However, in the method as described above, the predetermined period during which the illuminating lamp should be turned on can be given only as a fixed time after sunset. That is, the time when the illumination lamp is turned off similarly shifts with respect to the shift in sunset time due to the influence of weather and seasons. Originally, the time when the illumination lamp is turned off is the time when traffic is reduced as shown in Conventional Example 1, and it is considered that there is little variation due to weather and season. For example, in the conventional example, assuming that the time when traffic decreases in the summer is 12:00 pm (0:00 am) and the time is set to turn off at that time, the light is turned off before 10 pm in the winter. It can be considered a problem such as. On the other hand, if the time until turning off is set to be long, the illuminating lamp is turned on until an unnecessary time in summer, resulting in wasted power consumption.
[0007]
In order to solve such a problem, a method of turning off the lights at the same time without being affected by the sunset time by having a clock (or a device for measuring time) instead of the elapsed time after sunset can be considered. However, it is more expensive than a timer for simple time measurement, and the time needs to be adjusted.
[0008]
[Problems to be solved by the invention]
As described above, the conventional device has a problem in that the illumination lamp is turned on after sunset and then the time to turn it off varies depending on the sunset time.
[0009]
The present invention has been made in view of the above points, and an object thereof is to provide a human body detection sensor and an illuminance detection sensor, and to turn on an illuminating lamp according to the presence and illuminance of a person within the control range. The lighting device that is turned on after sunset by using a timer and illuminance detection sensor for simple time measurement without providing an expensive clock function in the lighting device that turns off, dimming or lighting Alternatively, an object of the present invention is to provide an illumination device that can control the dimming time to be substantially constant regardless of the sunset time.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention has an illuminance detection unit that detects ambient brightness and an illumination control unit that turns on the illuminating lamp, and the ambient brightness falls below a predetermined illuminance. If the illumination light is turned on or dimmed, and the illumination device has a timer function for maintaining the lighting for a predetermined time from the start of lighting, the ambient brightness detected by the illuminance detection unit is set in advance. measured by Ri daylight hours to measure the time as a value or more, per year difference in average sunshine hours and the measured duration of sunshine, seeking correction time of the timer by multiplying a predetermined correction coefficient, the correction variations in the end time of the sustaining timer by adding time sustaining time, provided the timer time correction means for correcting the sustaining time of the illuminating lamp to be less than the variation in the illumination lighting start time, year Rights When the sunshine time is in the range of 10 hours to 14 hours, the correction coefficient is in the range of 0.2 to 1.0, and the difference between the representative value of the sunshine time in the predetermined number of days prior to the current day and the measured sunshine time. However, if it is clearly different from the change in daily sunshine hours, the correction time obtained from the measured sunshine hours is discarded, and the correction time is calculated using the representative value of the sunshine hours before the current day. Features.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the configuration of the first embodiment of the present invention. The human body detection means 10 includes an infrared detection element 11, an amplifier 12 and a comparator 13, and outputs a human body detection signal HQ when detecting the presence of a person in the control region. The low illuminance detection unit 20 outputs a low illuminance detection signal LP from the comparator 22 when the surroundings become dark and the illuminance detected by the optical sensor 21 falls below the set illuminance. The timer unit 61 receives the low illuminance detection signal LP, starts operation, and outputs the lighting signal S for a preset time. If the lighting signal S is input, the CPU 44 outputs a low illuminance ratio lighting signal SL, and when both the human body detection signal HQ and the low illuminance detection signal LP are input, regardless of the presence or absence of the lighting signal S, A high illumination ratio lighting signal SH is output. An example of the waveforms of the high illumination ratio lighting signal SH, the low illumination ratio lighting signal SL, and the AC power supply 1 is shown in FIG. Based on this signal, the triac 43 is turned on / off via the phototriac 42, and the illumination lamp 50 is dimmed. Note that the zero cross detector 41 of the illumination control means 40 provides a zero cross detection signal to the CPU 44 for phase control of the triac 43.
[0012]
Based on the time from when the output of the low illuminance detection signal LP was stopped to the start of the current output, that is, the time from when the ambient illuminance becomes brighter than the reference value until it becomes dark again, the timer correction means 62 is shown in FIG. A correction time tx as shown is given to the timer unit 61. The timer unit 61 adds / subtracts the correction time tx to the preset time, and outputs the lighting signal S during that time. The time from when the ambient illuminance becomes brighter than the reference value until it becomes dark again is considered to be the so-called sunshine time, which is the time until the surroundings become brighter due to sunrise and the surroundings become darker after sunset. In the case of this embodiment, when the sunshine time is 2 hours shorter than 12 hours on the basis of 12 hours, it is considered that the detection of low illuminance due to sunset is accelerated by 1 hour, so the time for outputting the lighting signal is 1 hour. It is corrected to make it longer. Conversely, when the sunshine time is increased by 2 hours, it is considered that the low illumination detection is delayed by 1 hour, and the lighting signal output is output by 1 hour shorter. That is, the correction formula is as follows.
[0013]
tx = 0.5 × (12 hours-daylight hours)
Thereby, the output end time of the lighting signal S is set to be approximately constant. Further, since the ambient illuminance becomes brighter during lighting of the illuminating lamp, there may be a case where the comparator 22 does not send out the low illuminance detection signal LP in the low illuminance detection unit 20, but in that case, as shown in FIG. The lighting signal SS is output from the CPU 44, and an OR signal with the low illuminance detection signal LP is taken as a signal LP ′, which can be used as the low illuminance detection signal. Moreover, what is necessary is just to measure said sunshine time by the timer part 61 which measures the time which outputs the lighting signal S. FIG.
[0014]
With the above configuration, the output end time of the lighting signal can be made substantially constant with a simple timer circuit that does not require time adjustment without using a precise clock, etc. Regardless, the end time of the low illumination ratio lighting can be made substantially the same time.
[0015]
FIG. 3 shows the correction time setting value of the timer correction means 62 in the second embodiment of the present invention. The circuit configuration is the same as that of the first embodiment shown in FIG. In this embodiment, instead of the sunshine hours shown in the first embodiment, the night time is measured and the timer time is corrected accordingly. 2 hours long at night means that sunrise is 1 hour late, sunset is 1 hour early, the timer time is extended by 1 hour, and the end of sending the lighting signal is delayed by 1 hour, thereby making the turn-off time substantially constant. Yes.
[0016]
FIG. 4 shows the correction time setting value of the timer correction means 62 in the third embodiment of the present invention. The circuit configuration is the same as that of the first embodiment shown in FIG. In this embodiment, as in the first embodiment, the timer time is corrected based on the sunshine time. However, when the sunshine time is longer than Ta, the correction time is fixed at ta and the sunshine time is shorter than Tb. In this case, the correction time is fixed at tb, and when the sunshine time is shorter than Tc, the correction is not applied. This assumes that the lighting device according to the present invention is used in an area of a specific range, and is set so that the correction of the timer time is effective in an area where the difference in daylight hours in the year is the largest. It is. For example, when considering use in Japan, the region where the difference in daylight hours in the year is the largest is in Hokkaido, which is approximately 6 to 7 hours. Therefore, the correction can be made by setting this from the winter sunshine time Ta to the summer sunshine time Tb. Further, when the sunshine time shorter than a predetermined value (in this case, Tc) is measured, it is considered that the sunshine time has started to be counted by the timer from the daytime due to the installation work of the lighting device, in which case the timer correction means The time is not extended by
[0017]
In addition, an embodiment in the case where the sunshine hours change due to changes in weather will be described below.
First, a fourth embodiment of the present invention will be described. Record the sunshine hours of the day before the RAM or the like as a representative value of the daylight hours prior to the day, when the daylight hours of the day of significantly different from this, namely than the error range of variation and the timer circuit daily sunshine If there is a large difference, it is considered that the sunshine time (here, the time from brightening to darker than the predetermined value) has changed due to changes in weather between the previous day and the current day. At this time, if the lighting starts on the day about 24 hours after the lighting start time of the previous day (within the variation of the daily sunshine hours and the error range of the timer), the deviation of the sunshine hours due to the weather will cause the morning illuminance to be a predetermined value. It is thought that it was caused by the above time lag. Therefore, the timer time is corrected by the correction time derived from the previous day's sunshine time without correcting the timer time by the same day's sunshine time, and the previous day's sunshine time is recorded as the current day's sunshine time.
[0018]
Next, a fifth embodiment of the present invention will be described. Like the fourth embodiment described above, may be recorded sunshine hours of the day before the RAM or the like as a representative value of the daylight hours prior to the day, when the daylight hours of the day of significantly different from this, that daily sunshine If there is a difference larger than the time change and the error range of the timer circuit, the daylight time (here, the time from brightening to darker than the specified value) has changed due to weather changes between the previous day and the current day. I think. At this time, the difference between the daylight hours of the previous day and the day is substantially the same as the difference between the time from the lighting start time of the previous day to the day of lighting start and 24 hours, the change in the daily daylight hours, and the error range of the timer. If this is the case, the difference in the daylight hours due to the weather is considered to have occurred due to the time difference when the illuminance in the evening falls below a predetermined value. Therefore, the timer time is corrected by adding {24 hours- (the time from the lighting start time of the previous day to the lighting start time of the current day)} to the correction time derived from the sunshine time of the previous day. In other words, within the change range of daily sunshine hours,
{(Representative value of sunshine duration)-(Measured sunshine duration)}
≒ {24 hours-(Time from lighting start time of the previous day to lighting start of the day)}
Therefore, the correction time at this time is derived by the following equation.
[0019]

Furthermore, the lighting start time of the day is 24 hours after the lighting start time of the previous day, the time measurement start time until the lighting start time of the next day is recorded, and the daylighting time of the previous day is recorded as the daylighting time of the day. .
[0020]
In the fourth and fifth embodiments described above, but records the sunshine duration of the previous day as a representative value of the daylight hours prior to the day, record the sunshine for a given number of days prior to the day, they all In the case of approximately coincidence, the sunshine time of the previous day may be adopted as the representative value. If this condition of substantially coincidence is not satisfied, the correction time is set according to only the daylight time of the day without following the fourth and fifth embodiments. This prevents malfunction when there is no record of the sunshine time or lighting start time of the previous day immediately after the power is turned on.
[0021]
In all the embodiments described so far, it is possible to employ a configuration in which the timer correction means and the timer unit are included in the CPU using a microcomputer or the like having a built-in timer circuit. Moreover, it is good also as a structure which includes the comparator part of a low illumination intensity detection part, and also OR circuit in CPU. Further, in all the embodiments, the illumination lamp is an incandescent lamp, and the dimming control is performed by the triac. However, the illumination lamp may be a fluorescent lamp, and the dimming means may be a dimming control means of a general fluorescent lamp. Also, the set value of the correction time of the timer correction means may be a discrete value, for example, a stepped value, instead of a continuous value as shown in the figure.
[0022]
Further, in all the examples, when detecting that the ambient illuminance was lower than the predetermined value, the output of the comparator 22 was sampled at a predetermined time for a predetermined period, and the ambient illuminance was surely darkened. By sending the low illuminance detection signal LP with a condition for confirming the above, it is possible to prevent malfunctions due to a temporary decrease in illuminance.
[0023]
【The invention's effect】
According to the present invention, even when the sunset time varies depending on the season, the time when the illumination lamp is turned off can be kept approximately constant. Therefore, it is not turned on unnecessarily for a long time, or it is not turned off even though the illumination lamp is still necessary. In addition, by using a simple timer circuit and timer time correction means without using a precise clock, it is possible to turn on the illuminating lamp until the required time, and there is no need for time adjustment.
[Brief description of the drawings]
FIG. 1 is a block circuit diagram showing a configuration of a first embodiment of the present invention.
FIG. 2 is an explanatory diagram showing the operation of the first embodiment of the present invention.
FIG. 3 is an explanatory diagram showing the operation of the second embodiment of the present invention.
FIG. 4 is an explanatory view showing the operation of the third embodiment of the present invention.
FIG. 5 is a block circuit diagram showing a modification of the first embodiment of the present invention.
FIG. 6 is a block circuit diagram showing a configuration of a conventional example.
FIG. 7 is an operation waveform diagram of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Human body detection means 20 Low illumination detection part 40 Illumination control means 50 Illumination lamp 61 Timer part 62 Timer correction means

Claims (9)

It has an illuminance detection unit that detects ambient brightness and an illumination control means that turns on the illuminating lamp. When the ambient brightness falls below the specified illuminance, the illuminating lamp is turned on or dimmed, and lighting starts. a lighting device having a timer function for maintaining a predetermined time light up, measured by Ri daylight hours to measure the time that the ambient brightness is preset intensity value than is detected by the illuminance detection unit Then, the difference between the annual average sunshine time and the measured sunshine time is multiplied by a predetermined correction coefficient to obtain a timer correction time, and this correction time is added to the lighting maintenance time to determine the end time of the lighting maintenance timer. when variation, a timer time correction means for correcting the sustaining time of the illuminating lamp to be less than the variation in the illumination lighting start time provided, year-round sunshine time is in the range of 10 hours to 14 hours The correction coefficient is in the range of 0.2 to 1.0, and the difference between the representative value of the sunshine hours in the predetermined number of days before the current day and the measured sunshine hours is clearly compared with the change in the daily sunshine hours. If different , the lighting device is characterized in that the correction time obtained from the measured sunshine time is discarded and the correction time is obtained using a representative value of the sunshine time before the current day . It has an illuminance detection unit that detects ambient brightness and an illumination control means that turns on the illuminating lamp. When the ambient brightness falls below the specified illuminance, the illuminating lamp is turned on or dimmed, and lighting starts. In the illuminating device having a timer function for maintaining the lighting for a predetermined time from, the sunshine time is measured by measuring the time when the ambient brightness detected by the illuminance detection unit is equal to or greater than a preset illuminance value, The difference between the annual average sunshine time and the measured sunshine time is multiplied by a predetermined correction coefficient to obtain a timer correction time. the timer time correction means for correcting the sustaining time of the illuminating lamp to be less than the variation in the illumination lighting start time provided, the representative value of the sunshine in the predetermined number of days prior to the day, measured Sunshine time differences which are, if different apparent compared to a change in daily sunshine, discards the correction time obtained from the measured daylight hours, characterized in that it does not perform the time correction illumination apparatus. Human body detecting means for detecting the presence of a person in a predetermined control area is further provided, wherein the lighting control means detects the presence of a person by the human body detecting means, and the illuminance detecting unit The illumination device according to claim 1 or 2, wherein the illumination lamp is turned on when it is detected that the brightness is equal to or less than a predetermined illuminance. It has an illuminance detection unit that detects ambient brightness and an illumination control means that turns on the illuminating lamp. When the ambient brightness falls below the specified illuminance, the illuminating lamp is turned on or dimmed, and lighting starts. In the illuminating device having a timer function for maintaining the lighting for a predetermined time from, the sunshine time is measured by measuring the time when the ambient brightness detected by the illuminance detection unit is equal to or greater than a preset illuminance value, The difference between the annual average sunshine time and the measured sunshine time is multiplied by a predetermined correction coefficient to obtain a timer correction time. the timer time correction means for correcting the sustaining time of the illuminating lamp to be less than the variation in the illumination lighting start time provided, the representative value of the sunshine in the predetermined number of days prior to the day, measured Sunshine time differences that is, when different apparent compared to a change in daily sunshine hours, 24 hours within the time daily sunshine time change from the previous day of the lighting start time to the lighting start of the day when matching discards the correction time obtained from the measured daylight hours, you and obtains a correction time using the representative value of the daylight hours prior to the day illumination device. It has an illuminance detection unit that detects ambient brightness and an illumination control means that turns on the illuminating lamp. When the ambient brightness falls below the specified illuminance, the illuminating lamp is turned on or dimmed, and lighting starts. In the illuminating device having a timer function for maintaining the lighting for a predetermined time from, the sunshine time is measured by measuring the time when the ambient brightness detected by the illuminance detection unit is equal to or greater than a preset illuminance value, The difference between the annual average sunshine time and the measured sunshine time is multiplied by a predetermined correction coefficient to obtain a timer correction time. the timer time correction means for correcting the sustaining time of the illuminating lamp to be less than the variation in the illumination lighting start time provided, the representative value of the sunshine in the predetermined number of days prior to Ri by the day, measured When the difference in the sunshine hours is clearly different compared to the change in the daily sunshine hours, the difference between the representative value of the sunshine hours and the measured sunshine hours, and from the lighting start time of the previous day to the lighting start of the day. when the difference between the time and the 24 hours to match within a variation of daily sunshine hours discards the correction time obtained from the measured daylight hours, using a representative value of the daylight hours prior to the day correction time added difference of the representative value of the sunshine and the measurement sunshine time as the correction time, the illumination apparatus you and recording the lighting start time of the previous day as the lighting start time of the day. 6. The measurement value of any one of claims 1 to 5, wherein when the measured value of the sunshine time is shorter than 7 hours to 11 hours, which is the sunshine time in winter, a value smaller than the correction time obtained by multiplying by the predetermined correction coefficient is corrected. A lighting device characterized by time. 6. The measurement value of any one of claims 1 to 5, wherein a measured value of sunshine time is longer than 14 hours to 18 hours, which is a sunshine time in summer, and a value smaller than the correction time obtained by multiplying by the predetermined correction coefficient is corrected. A lighting device characterized by time. In any one of claims 1 to 7, and sunshine sunshine duration of a typical day time in a given number of days prior to the day, the difference between the measured daylight hours is significantly different compared to the changes in daily sunshine Sometimes, the correction time obtained from the measured sunshine hours is discarded, and the sunshine value of the previous day is recorded as the sunshine value of the day. Lighting device according to any one of claims 1 to 8 sunshine time is characterized in that to discard the correction time when equal to or less than the predetermined value.

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