JP2000100583A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system capable of saving energy and realizing the comfortable illumination environment. SOLUTION: This lighting system is provided with a power supply section 2, a timer section 3 measuring time (e.g. 24 hr or the lighting hold period at the time of human detection), a human detection section 5 constituted of PIR that detects the body temperature and detecting the presence or absence of a human being, a controller 4 constituted of a microcomputer and outputting the fluorescent lamp control signal 10 corresponding to the time signal 8 from the timer section 3 and the human detection signal 9 from the human detection section 5, and a fluorescent lamp lighting circuit section 6 constituted of a dim-controllable LC resonance inverter circuit and controlling the light output of a fluorescent lamp load La in response to the fluorescent lamp control signal 10. The lighting system has a first operation mode for turning the fluorescent lamp load La off when no human being is detected and a second operation mode for turning the fluorescent lamp load La on when the human being is detected. The preceding preheating time of the fluorescent lamp load La is made shorter in the first operation mode than that in the second operation mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device.

[0002]

2. Description of the Related Art In recent years, lighting devices using a human body detection sensor, an illuminance sensor, and a timer have been increasing in pursuit of energy saving and comfort. For example, as an incandescent lamp,
There is an incandescent lamp stand with a wake-up function and a built-in toilet luminaire equipped with a human body detection sensor and an incandescent lamp and a clock. As an illuminating device including an incandescent lamp, a fluorescent lamp, and a human body detection sensor, for example, Japanese Patent Application Laid-Open No. Hei 9-19927
No. 9 and Japanese Patent Application Laid-Open No. 5-299180, all of which improve comfort. In other words, in the technique disclosed in Japanese Patent Application Laid-Open No. 9-199279, when a human body is detected by the human body detection unit, the incandescent lamp load is turned on first, and the fluorescent lamp load is turned on after sufficiently preheating. Thus, the lighting load can be quickly turned on without increasing the power consumption during standby, and the lamp life of the fluorescent lamp is prolonged. Also, Japanese Unexamined Patent Publication No.
Japanese Patent Application Laid-Open No. 299180 discloses that when the mode is switched between a mode in which only the fluorescent lamp is turned on and a mode in which only the incandescent lamp is turned on, the light intensity of the fluorescent lamp is gradually changed, and the light intensity of the incandescent lamp is changed. By gradually changing the opposite to the fluorescent lamp, for example, to transition from a state in which only the fluorescent lamp is turned on to a state in which only the incandescent lamp is turned on,
With this configuration, when the light source to be turned on is switched from, for example, a fluorescent lamp to an incandescent lamp, the illuminance in the room changes smoothly, and the illumination color gradually shifts from the fluorescent light color to the incandescent light color. Therefore, discomfort and discomfort when the type of light source is switched can be eliminated.

[0003]

However, in all of the above-mentioned conventional examples, incandescent lamps have low energy efficiency, and the power loss increases as they are used for a long time, which is not desirable from the viewpoint of energy saving. The first problem occurs.

On the other hand, if a fluorescent lamp and a human body detection sensor are provided without using an incandescent lamp, the preheating time of the fluorescent lamp (in the case of a general inverter-type lighting circuit, approximately 0.8 to 1.0
Second), but there is a second problem that a time lag occurs from detection of the human body to lighting of the fluorescent lamp due to the preheating time.

As a means for solving the second problem, it is conceivable to increase the preheating current and shorten the preheating time. However, since a large stress is applied to the fluorescent lamp, the lamp life is shortened. This causes a third problem.

The present invention has been made in view of all of the above problems, and an object of the present invention is to provide a lighting device capable of saving energy and realizing a comfortable lighting environment.

[0007]

According to the first aspect of the present invention, there is provided a fluorescent lamp load, a human body detecting unit for detecting the presence or absence of a human body, and a human body detecting unit for detecting the presence or absence of a human body. A first operation mode for turning off the fluorescent lamp load when no human body is detected, and a fluorescent lamp load for turning off the fluorescent lamp load when no human body is detected. And a second operation mode in which the lamp is turned on. The preheating time of the fluorescent lamp load is shorter in the first operation mode than in the second operation mode.

According to the second aspect of the present invention, a fluorescent lamp load, an incandescent lamp load, a human body detecting unit for detecting the presence or absence of a human body, and light of the fluorescent lamp load according to a human body detection signal from the human body detecting unit. It has a fluorescent lamp lighting circuit that controls the output, and an incandescent lamp lighting circuit that controls the light output of the incandescent lamp load according to the human body detection signal from the human body detection unit. The lamp load and the lighting for a long time are characterized by a fluorescent lamp load.

According to the third aspect of the present invention, a fluorescent lamp load, an incandescent lamp load, a human body detecting unit for detecting the presence or absence of a human body, and light of the fluorescent lamp load according to a human body detection signal from the human body detecting unit. A fluorescent lamp lighting circuit unit that controls the output, and an incandescent lamp lighting circuit unit that controls the light output of the incandescent lamp load according to the human body detection signal from the human body detection unit, and in the preheating time of the fluorescent lamp load, The incandescent lamp load is turned on.

According to a fourth aspect of the present invention, in the lighting device according to any one of the first to third aspects, an illuminance detecting section for detecting ambient illuminance is provided, and when the ambient illuminance is equal to or more than a predetermined value, a human body is detected. Even if there is, the light is turned off or turned on with low luminance.

[0011]

(Embodiment 1) FIG. 1 is a block diagram of a first embodiment according to the present invention, and FIG. 2 is an operation waveform diagram thereof.

The lighting device 1 comprises a power supply unit 2, a timer unit 3 for measuring time (for example, 24 hours or a lighting holding time at the time of detecting a human body), a PIR for detecting body temperature, and the like. A control section 4 comprising a human body detecting section 5 for detecting, a microcomputer and the like, and outputting a fluorescent lamp control signal 10 according to a time signal 8 from the timer section 3 and a human body detection signal 9 from the human body detecting section 5; For example, as shown in FIG.
A fluorescent lamp lighting circuit section 6 for controlling the light output of the fluorescent lamp load La in accordance with the fluorescent lamp control signal 10; The light output of the fluorescent lamp load La is controlled by dividing the light by the mode.

Hereinafter, the three operation modes will be briefly described with reference to FIG. 1. Normal mode When the human body is not detected, the light is turned off, and when the human body is detected, all the lights are turned on after the lapse of the preheating time T2. Then, the light is turned off after a certain lighting holding time has elapsed from the start of all lighting. When the human body is detected again during the lighting holding time and the human body detection signal 9 is input to the control unit 4, the lighting is maintained for the lighting holding time from that time (retrigger function).

2. Return mode For example, during the time of returning home such as 6:00 pm to 9:00 pm, if the person who came home sees the lights inside the house (for example, the entrance light) from the outside, the mind will be relaxed. When the human body is not detected, the light is turned on. Then, when a human body is detected, all the lights are turned on, and the lights are turned off after a certain lighting holding time has elapsed since the start of all the lights. During the lighting holding time, the human body is detected again and the control unit 4
When the human body detection signal 9 is input to the device, the lighting is maintained for a further lighting holding time from that point (retrigger function). In addition,
Preheating in this operation mode (preheating time T1, T
1> T2) is performed at the start of this operation mode in the light-off state, and when detecting the human body, only the transition from the dimming lighting to the full lighting is performed, so that the preheating is not performed.

3. Midnight mode For example, during bedtime from 11:00 pm to 4:00 am, for temporary movement such as going to the toilet, the light turns off when no human body is detected, and when a human body is detected, it turns off for a short time after the preceding preheating time T2 elapses. The light is turned on after the light is turned on, and the light is turned off after a certain lighting holding time has elapsed since the start of the light control. When the human body is detected again during the lighting holding time and the human body detection signal 9 is input to the control unit 4, the lighting is maintained for the lighting holding time from that time (retrigger function). The reason why the dimming lighting is performed at the time of detecting the human body is to prevent, for example, full wake-up and the difficulty of falling asleep when the lighting is fully performed, and to save energy.

In the case of a fluorescent lamp, especially when the ambient temperature is low and the pre-heating time is short, it is difficult to start in the dimming state immediately. In some cases, it is necessary to temporarily increase the output to a level close to the full lighting after the preliminary preheating, and then perform the dimming lighting. However, in order to achieve the original purpose of each operation mode, T1 is set to 0.8 to 0.8. For 1.0 second, T
2 is desirably set to 0.8 seconds or less.

As described above, in the operation mode in which the light is turned off when no human body is detected, such as the <normal mode> and the <midnight mode>, the preceding preheating time is shortened as much as possible.
It is possible to reduce the problem that a time lag occurs between the detection of the human body and the lighting of the fluorescent lamp due to the pre-heating time of the fluorescent lamp load. In this case, even if the pre-heating time is made relatively long and the time lag occurs, a certain level of illuminance can be secured, so that the deterioration of the lamp life can be reduced.

FIG. 3 shows a circuit configuration of the fluorescent lamp lighting circuit section 6, for example. In this circuit, a DC voltage obtained by full-wave rectification of an AC power supply AC by a rectifier DB and smoothing by a smoothing capacitor C1 is constituted by inductors L1 and L2, a capacitor C2, a transistor (hereinafter, referred to as a switching element) Q1, and a diode D1. A voltage resonance type inverter circuit, which is a so-called single-type inverter circuit, converts the voltage into an AC high frequency voltage and supplies it to the fluorescent lamp load La. Further, a preheating capacitor C3 is connected between the non-power-supply-side terminals of the fluorescent lamp load La, and a high-frequency preheating current flows through the capacitor C3 to the fluorescent lamp load La until the fluorescent lamp load La starts discharging. Flow into the filament.

The operation of the circuit shown in FIG. 3 will be briefly described below. During the preheating, the filament of the fluorescent lamp load La is sufficiently preheated by reducing the on-duty of the switching element Q1 for a certain period (hereinafter referred to as the preheating time), and after the preheating is completed, the switching element Q1 is turned on. By increasing the duty, the voltage at both ends of the fluorescent lamp load La is set to be equal to or higher than the starting voltage to start discharging and light the lamp. Further, the switching element Q1 is controlled by the drive circuit 11, and by controlling the switching element Q1 (for example, the on-duty of the switching element Q1),
Dimming control can be performed by changing the value of the high-frequency voltage supplied to the fluorescent lamp load La.
The dimming ratio can be reduced by reducing the on-duty of 1. The inverter circuit may be of another type, such as a half-bridge type or a full-bridge type, as long as the preheating time and the dimming can be controlled, and a copper iron ballast may be used instead of the inverter circuit.

(Embodiment 2) FIG. 4 is a block diagram of a second embodiment according to the present invention, and FIG. 5 is an operation waveform diagram thereof.

The illuminating device 1 comprises a power supply unit 2, a timer unit 3 for measuring time (for example, 24 hours or a lighting holding time when a human body is detected), a PIR for detecting a body temperature, and the like, and detects the presence or absence of a human body. And a fluorescent lamp control signal 10 corresponding to a time signal 8 from the timer unit 3 and a human body detection signal 9 from the human body detection unit 5.
, And an LC resonance inverter circuit or the like capable of dimming control as shown in FIG. 3 for controlling the light output of the fluorescent lamp load La in accordance with the fluorescent lamp control signal 10. The circuit unit 6 includes a triac and the like, and is capable of dimming control by phase control.
And the incandescent lamp lighting circuit unit 13 that controls the light output of the incandescent lamp load IL according to the following. The day is divided into the following three operation modes to divide the light output of the fluorescent lamp load La and the incandescent lamp load IL. To control.

Hereinafter, the three operation modes will be briefly described with reference to FIG. 1. Normal mode When the human body is not detected, the light is turned off. When a human body is detected, the incandescent lamp load IL is turned on first, and the preheating time T1 (for example, 0.
After a lapse of 8 to 1.0 seconds), the fluorescent lamp load La is fully lit.
Then, the fluorescent lamp load La is turned off after a certain lighting holding time has elapsed from the start of all lighting. When the human body is detected again during the lighting holding time and the human body detection signal 9 is input to the control unit 4, the lighting is maintained for the lighting holding time from that time (retrigger function).

2. Return mode For example, during the time of returning home such as 6:00 pm to 9:00 pm, if the person who came home sees the lights inside the house (for example, the entrance light) from the outside, the mind will be relaxed. In addition, the fluorescent lamp load La is fully lit even when no human body is detected. The incandescent lamp load IL is fully illuminated when a human body is detected, and is extinguished after a lapse of a predetermined time from the start of all illuminating. When the human body is detected again during the fixed time and the human body detection signal 9 is input to the control unit 4, the lighting is maintained for a further fixed time from that time (retrigger function). Note that the pre-heating (pre-heating time T1) in the present operation mode is performed at the time of starting the present operation mode in the light-off state.

3. Late-night mode For example, during bedtime such as 11:00 pm to 4:00 am, for temporary movement such as going to the toilet, only the incandescent lamp load IL is turned off when no human body is detected, and fades in when a human body is detected. Dimming lighting is performed, and the light is extinguished after a fixed time has elapsed from the start of dimming lighting. When the human body detection is performed again during the fixed time and the human body detection signal 9 is input to the control unit 4, the lighting is maintained for a further fixed time from that time (retrigger function).
The reason why the dimming lighting is performed at the time of detecting the human body is to prevent, for example, full wake-up and the difficulty of falling asleep when the lighting is fully performed, and to save energy. Further, the fluorescent lamp load La is turned off regardless of the presence or absence of the human body detection. It should be noted that the incandescent lamp load IL may be fully lit, and the illuminance may be anything as long as it is appropriate.

As described above, in consideration of the economy of the fluorescent lamp load, the speed of starting the incandescent lamp load, and the ease of dimming control,
By using the incandescent lamp load for short-time lighting and the fluorescent lamp load for long-time lighting during human body detection, a time lag occurs from human body detection to fluorescent lamp lighting due to the pre-heating time of the fluorescent lamp. The problem can be reduced, and even if the time lag occurs by making the preheating time relatively long, the incandescent lamp can secure a certain level of illuminance, so that the deterioration of the lamp life can be reduced. Also,
By lighting the fluorescent lamp load in addition to the lighting of the incandescent lamp load, high illuminance can be secured.

In the <normal mode>, only the incandescent lamp load may be fully lit at the time of the first human body detection, and the fluorescent lamp load may be lit only after lapse of the preheating time T1 only in the case of retrigger. . In the <normal mode>, if a predetermined number of human body detections are performed during a certain period, the fluorescent lamp load may be turned on after the lapse of the preheating time T1.

(Embodiment 3) FIG. 6 shows a block diagram of a third embodiment according to the present invention.

The difference from the first embodiment shown in FIG. 1 is that an illuminance detecting section 14 composed of cds or the like for detecting the ambient illuminance is provided, and if the ambient illuminance is equal to or more than a predetermined value, the human body is not detected. Even in this case, it is configured to be turned off or turned on with low brightness (for example, low-brightness lighting in the case of the homecoming mode). Omitted.

Note that the illuminance detection unit 14 composed of cds or the like and detecting the ambient illuminance may be used in the illumination device 1 shown in FIG.

[0030]

According to the first aspect of the present invention, in the operation mode in which the light is turned off when the human body is not detected, the preheating time is shortened as much as possible so that the preheating time of the fluorescent lamp load is reduced. It is possible to reduce the problem that a time lag occurs from detection to lighting of the fluorescent lamp load,
In the case of the operation mode in which the lamp is lit when the human body is not detected, even if the pre-heating time is set relatively long and the time lag occurs, a certain level of illuminance can be secured, so that the deterioration of the lamp life can be reduced, and energy saving can be achieved. A lighting device capable of realizing a possible and comfortable lighting environment can be provided.

According to the second aspect of the present invention, in consideration of the economics of the fluorescent lamp load, the speed of starting the incandescent lamp load, and the ease of dimming control, the short-time lighting at the time of detecting a human body is incandescent. By using the lamp load and long-time lighting separately from the fluorescent lamp load, it is possible to reduce the problem that a time lag occurs between the detection of the human body and the lighting of the fluorescent lamp due to the pre-heating time of the fluorescent lamp, thereby saving energy. And a lighting device capable of realizing a comfortable lighting environment.

According to the third aspect of the invention, even if the pre-heating time of the fluorescent lamp load is made relatively long and the time lag occurs, a certain amount of illuminance can be secured by the incandescent lamp load, so that the lamp life is reduced. It is possible to provide a lighting device that can reduce the power consumption, can save energy, and can realize a comfortable lighting environment.

According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, if the ambient illuminance is equal to or more than a predetermined value, the light is turned off or turned off even if a human body is detected. Since the lighting device is illuminated at low luminance, it is possible to provide a lighting device capable of saving energy and realizing a comfortable lighting environment.

[Brief description of the drawings]

FIG. 1 shows a block configuration diagram of a first embodiment according to the present invention.

FIG. 2 is an operation waveform diagram according to the first embodiment of the present invention.

FIG. 3 shows an example of a specific circuit diagram of a fluorescent lamp lighting circuit section according to the present invention.

FIG. 4 shows a block diagram of a second embodiment according to the present invention.

FIG. 5 is an operation waveform diagram according to the second embodiment of the present invention.

FIG. 6 shows a block diagram of a third embodiment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Illumination device 4 Control part 5 Human body detection part 14 Illuminance detection part La Fluorescent lamp load IL Incandescent lamp load

Claims (4)

[Claims] 1. A fluorescent lamp load, a human body detecting unit for detecting the presence or absence of a human body, and a fluorescent lamp lighting circuit unit for controlling a light output of the fluorescent lamp load according to a human body detection signal from the human body detecting unit. A lighting device comprising: a first operation mode for turning off the fluorescent lamp load when no human body is detected; and a second operation mode for turning on the fluorescent light load when no human body is detected. The lighting device according to claim 1, wherein the preheating time is shorter in the first operation mode than in the second operation mode. 2. A fluorescent lamp load, an incandescent lamp load, a human body detector for detecting the presence or absence of a human body, and a fluorescent lamp for controlling the light output of the fluorescent lamp load according to a human body detection signal from the human body detector. A lighting device comprising: a lighting circuit unit; and an incandescent lamp lighting circuit unit that controls the light output of the incandescent lamp load according to a human body detection signal from the human body detection unit. A lighting device characterized in that the lighting load and the lighting for a long time are the fluorescent lighting load. 3. A fluorescent lamp load, an incandescent lamp load, a human body detecting unit for detecting the presence or absence of a human body, and a fluorescent lamp for controlling the light output of the fluorescent lamp load according to a human body detection signal from the human body detecting unit. In a lighting device including a lighting circuit unit and an incandescent lamp lighting circuit unit that controls the light output of the incandescent lamp load according to a human body detection signal from the human body detection unit, in the preheating time of the fluorescent lamp load, An illumination device for lighting the incandescent lamp load. 4. The illuminating device according to claim 1, further comprising an illuminance detection unit configured to detect ambient illuminance,
A lighting device characterized in that if the ambient illuminance is equal to or more than a predetermined value, the lighting device is turned off or turned on with low brightness even when a human body is detected.