JP3596208B2 - Automatic lighting device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an automatic lighting device that is installed on a wall of a corridor or the like of a house or the like and detects a change in the brightness or a state change such as passage of a human body in a predetermined area on a floor surface and automatically illuminates the area.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is an automatic illuminator shown in FIG. 8 as an automatic illuminator installed to detect the passage of a human body in a predetermined area at night and automatically illuminate the area in a corridor in a house. This automatic illuminator is used by being attached to a switch box for wiring, for example, on a wall of a corridor in a house or the like. As shown in the block diagram of FIG. A power supply unit 3 is provided.
[0003]
The heat ray detection unit 1 corresponds to a state detection unit that detects the passage of a human body, which is a state change of a predetermined area such as a floor surface or a corridor, and is an optical system that collects heat rays emitted from the human body. A condenser lens 11 formed of a polyethylene resin material, a pyroelectric element 12 for detecting a heat ray incident through the condenser lens 11, and an amplification circuit 13 for amplifying an output signal from the pyroelectric element 12. A filter circuit 14 that receives a voltage signal output from the amplifier circuit 13 and outputs a detection signal in a predetermined frequency band, and compares an output signal from the filter circuit 14 with a predetermined threshold value. It has a comparison circuit 15 that outputs a signal when it is larger than that, and an output circuit 16 that receives a signal from the comparison circuit 15 and outputs a detection signal for a predetermined time after determining passage of a human body in a predetermined area.
[0004]
The illuminating unit 2 illuminates the area with the output from the heat ray detecting unit 1, and controls the lighting of a light source unit 21 formed of, for example, a small light bulb having a power consumption of about 5 W. 22 and a brightness detecting unit 23 formed of, for example, a CdS element for detecting the brightness of the predetermined area. The light source section 21 is provided with a diffusion cover 25 made of, for example, a milky white acrylic resin material on the entire surface in order to diffuse the light from the above-mentioned jujube bulb so as not to be dazzled.
[0005]
The power supply unit 3 inputs AC 100V AC which is a commercial power supply, and supplies power to the above-mentioned heat ray detecting unit 1 and the illuminating unit 2, and a transformer 31 for converting the voltage of the AC power supply into a predetermined low voltage; And a power supply circuit 32 for inputting an AC low voltage from 31 and converting it to a DC having a predetermined voltage value, stabilizing the DC voltage, and outputting the stabilized DC voltage.
[0006]
The above-mentioned automatic lighting device is attached to a wiring switch box that is used when two general wiring devices are connected in series, which is called a two-switch box. Installed on the wall. Then, the brightness detector 23 detects that the brightness of the place where the automatic illumination device is installed is equal to or less than a predetermined brightness, and the heat ray detector 1 detects the light from the condenser lens 11 and the pyroelectric light. When it is detected that the human body has passed through the detection area optically formed by the detection element of the element 12, the lighting control circuit 22 is controlled by the output circuit 16 and the light bulb of the light source unit 21 is set to the predetermined position. It is lit continuously for a period of time.
[0007]
[Problems to be solved by the invention]
By the way, it is desirable that a wall-mounted device having the same module as a wiring device, such as the above-mentioned automatic lighting device, in a corridor of a house or the like can effectively use an AC power supply supplied through indoor wiring. Therefore, for example, as in the nightlight device shown in FIG. 10, the lighting unit having a jug light bulb (not shown), which is turned on by an AC power supply and whose blinking is controlled by a pressing operation of the cover 26, is appropriately controlled by an electric There is a need for an integrated wiring outlet 4 that can be used by connecting devices. However, the above-described automatic illuminating device is compactly configured by integrally housing the heat ray detecting unit 1 as the state detecting unit, the illuminating unit 2 and the power supply unit 3, but the power supply unit 3 having the transformer 31 has a small shape. As a result, there is a problem that it is difficult to reduce the size of the wiring outlet so that the wiring outlet is provided integrally.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic illuminating device that consumes less power and is easily miniaturized without using a transformer in a power supply unit.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, an automatic illuminating device according to claim 1, wherein a state detector for detecting a state change of a predetermined area such as a floor surface, and an illuminator for illuminating the area with an output from the state detector. In an automatic illuminating device including a unit and a power supply unit for supplying power to each of the units, the illuminating unit is configured such that a light source thereof is a plurality of LED elements. As a result, a predetermined area such as a floor surface is illuminated with light emitted from the LED element.
[0010]
According to a second aspect of the present invention, in the automatic illuminating device, the illuminating unit according to the first aspect has directivity control means for directing light emitted from the light source to the area. Thereby, the light emitted from the LED element is directed to a predetermined area such as a floor surface by the directivity control means.
[0011]
According to a third aspect of the present invention, in the automatic illuminating device, the directional control means according to the second aspect has a Fresnel lens shape. Thus, the light emitted from the LED element is directionally controlled in a Fresnel lens shape.
[0012]
According to a fourth aspect of the present invention, in the automatic illuminating apparatus, the directional control means according to the second or third aspect has at least two different directional characteristics to the area, and the light source has a light distribution. Are arranged on the same plane so that the crossing angle between the central axis of the directional control means and the pointing control means is different. Thus, light emitted from the LED elements provided on the same plane so as to have a different intersection angle with the directivity control means is directed to a predetermined area such as a floor with at least two different directivity characteristics. It will be.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the automatic lighting device of the present invention will be described based on FIGS. 1 to 6, and a second embodiment will be described based on FIG.
[0014]
[First Embodiment]
FIGS. 1A and 1B are explanatory diagrams showing the configuration of the automatic lighting device according to the first embodiment. FIG. 1A is a plan view with a cover removed, and FIG. 1B is a side sectional view. FIG. 2 is a block diagram of the automatic lighting device shown in FIG. FIG. 3 is an explanatory diagram of an LED element used in the automatic lighting device shown in FIG. 4A and 4B are explanatory diagrams of directivity control means of the automatic lighting device shown in FIG. 1, wherein FIG. 4A is a diagram showing a relationship between an LED element and a direction control cover, and FIG. FIG. 5 is an explanatory diagram of light distribution by the illumination unit of the automatic illumination device shown in FIG. FIG. 6 is an explanatory diagram of a method of attaching the automatic lighting device shown in FIG.
[0015]
This automatic illuminator AL is installed on a wall such as a corridor in a house to detect the passage of a human body in a predetermined area at night and automatically illuminate the area. Similarly, as shown in the block diagram of FIG. 2, a heat ray detecting unit 1, an illuminating unit 2, and a power supply unit 3 are provided. As shown in FIG. 6, a wiring outlet 4 is appropriately provided. These are all housed in a housing formed by the cover 51 and the body 52. The heat ray detector 1 is the same as that described as the conventional example, and a detailed description is omitted.
[0016]
The illuminating unit 2 illuminates a predetermined area such as a corridor, such as a floor, with an output from the heat ray detecting unit 1, and includes a plurality of LED elements 21, 21,... Shown in FIG. , A lighting control circuit 22, a brightness detector 23 formed of, for example, a CdS element for detecting the brightness of a predetermined area such as a floor or a corridor, and a directivity control cover 24.
[0017]
As shown in FIG. 3, the LED elements 21, 21,... Are provided on a reflector 21b having a curved surface inside a transparent resin body case 21a made of a shell-shaped epoxy resin or the like, and emit yellow light. It has a chip 21c and has a spindle-shaped light distribution characteristic around a central axis 21d. As shown in FIG. 1A, for example, 12 LED elements 21 are arranged in rows and columns, each of them is connected in series, and a blinking state is controlled by a lighting control circuit 22 described later. Is done.
[0018]
In this case, the lighting control circuit 22 is formed by a switch element such as a transistor, for example, and the LED elements 21, 21,... Blink in response to the output from the heat ray detecting unit 1 and the output from the brightness detecting unit 23. Control. As described in the conventional example, the lighting control circuit 22 receives from the brightness detection unit 23 a detection signal that detects that the brightness of a predetermined area such as a floor surface or a corridor is lower than the predetermined brightness. When the heat ray detection unit 1 receives a detection signal indicating that a human body has passed through a predetermined detection area, the LED elements 21 are turned on for a predetermined time.
[0019]
The directional control cover 24 is directional control means for directing light emitted from the plurality of LED elements 21, 21,..., Which are light sources, to a predetermined area such as a floor or a corridor. In this example, a transparent acrylic resin is used. As shown in FIG. 4 (a), on a semi-cylindrical inner curved surface formed of a material or the like, as shown in FIG. .., 24an are engraved. In the directional control cover 24, the intersection angle between the central axis 21d of the light distribution characteristics of the LED elements 21, 21,... According to the respective directional control results and the wall surface W on which the automatic lighting device is installed is indicated by ( As shown in FIG. 5B, the light emitted from the LED elements 21, 21,... is directionally controlled so as to be approximately 70 to 50 degrees, and as shown in FIG. A predetermined fan-shaped area of the corridor F is illuminated from the wall surface W.
[0020]
The power supply unit 3 inputs an AC 100 V AC which is a commercial power supply, and supplies power to the hot-wire detection unit 1 and the illumination unit 2. In this unit, the voltage of the AC power supply is converted to a predetermined low voltage. In addition, the power supply circuit 33 is formed only of a power supply circuit 33 that converts the voltage into a direct current having a predetermined voltage value, stabilizes the output, and outputs the stabilized voltage. The power supply circuit 33 is, for example, a series low-voltage stabilization circuit that lowers and stabilizes the alternating current of the commercial power supply with a resistor connected in series with the AC power supply, and is connected in series with the hot-wire detection unit 1. To supply a current of about 20 mA in total to the twelve LED elements 21, 21,..., DC power stabilized to a predetermined voltage value of about 2 W is supplied.
[0021]
The automatic illuminating device AL described above is attached to a switch box for one to which a general wiring device is attached, and is installed on a wall such as a corridor in a house. More specifically, as shown in FIG. 6, the locking means for locking the locking means provided on the cover 51 is locked to a synthetic resin material mounting frame 53 formed with locking means. Attached to the switch box. The mounting frame 53 has a middle frame 54 having a square hole exposing the front surface of the cover 51 at the center, which is locked by a locking claw, and a plate frame 55 for locking the plate 56 is provided with mounting screws 57, 57. Attach. Then, the brightness detection unit 23 detects that the brightness of the place where the automatic lighting device AL is installed is equal to or less than a predetermined brightness, and the heat ray detection unit 1 detects the condensing lens 11 and the focus. When it is detected that the human body has passed through the detection region optically formed by the detection element of the electric element 12, the lighting control circuit 21 is controlled by the output circuit 16, and the LED elements 21, 21,. Lights continuously for a predetermined time.
[0022]
According to the automatic illuminating device AL described above, the predetermined area of the floor F is illuminated with the light emitted from the LED elements 21, 21,. The size can be easily reduced without using any. Further, since the light emitted from the LED elements 21, 21,... Is directed to a predetermined area of the floor F by the directivity control cover 24, the predetermined area can be illuminated more brightly. Also, the light emitted from the LED elements 21, 21,..., Has a predetermined width of the directivity control cover 24, and the cross-section right angle triangular convex shapes 24a1,. Since it is possible to control the direction, it is possible to illuminate a wide area with a small shape.
[0023]
[Second embodiment]
7A and 7B are explanatory diagrams of directivity control means of the automatic illuminating device according to the second embodiment, wherein FIG. 7A is a diagram showing the relationship between LED elements and a directional control cover, and FIG. It is.
[0024]
This automatic illuminating device AL is different from the first embodiment only in the configuration of the directivity control means of the illuminating section 2 and the arrangement of the light source, and the other components are the same as those in the first embodiment. is there.
[0025]
However, the directivity control cover 24 corresponding to the directivity control means has two different directivity characteristics to the above-mentioned area. More specifically, as shown in FIG. 7A, upper ends H of the LED elements 21 arranged in rows and columns, which are arranged above, but oppose each other, and lower ends L, which are arranged below, oppose each other. , 24 a 1,..., 24 an having a predetermined width and different heights and different inclination angles from each other so as to have different directivities. It is engraved on the part L respectively.
[0026]
The LED elements 21, 21,..., Which are the same light sources as in the first embodiment, are different from the LED elements 21, 21,. They are differently provided on the same plane. That is, as shown in FIG. 7A, the crossing angle θ1 between the central axis 21d of the light distribution of the LED elements 21 arranged in rows and columns and the directivity control cover 24 is 70 degrees. Although it is arranged below, it is positioned and arranged by a positioning means (not shown) on the same plane so that the intersection angle θ2 between the central axis of the light distribution and the directivity control cover 24 becomes 90 degrees. In the directional control cover 24, the intersection angle between the central axis 21d of the light distribution characteristics of the LED elements 21, 21,... According to the respective directional control results and the wall surface W on which the automatic lighting device is installed is indicated by ( As shown in b), the light emitted from the LED elements 21, 21,... is controlled so as to be approximately 70 to 30 degrees, and as shown in FIG. From W, a fan-shaped predetermined area of corridor F is illuminated.
[0027]
According to the automatic illuminating device AL described above, the light emitted from the LED elements 21, 21,... Provided on the same plane so that the crossing angle with the pointing control cover 24 is different is at least two different pointing directions. Since the light is directed to a predetermined area of the floor surface F according to the characteristics, a wider range can be illuminated than that of the first embodiment.
[0028]
Note that the state detection unit of the automatic lighting device described above has been described as a heat ray detection unit that detects the passage of a human body that is a state change in a predetermined area such as a floor or a corridor, but the present invention is limited to only the heat ray detection unit. Instead, for example, a brightness detector that detects the brightness of the area where the automatic illuminating device is installed may be one that controls the light source to blink according to a change in brightness. Further, the directivity control means is not limited to the one having the Fresnel lens shape, and may have no directivity control means.
[0029]
【The invention's effect】
In the automatic illuminating device according to the first aspect, a predetermined area such as a floor surface is illuminated with light emitted from the LED element, so that power consumption is small, and therefore, the power supply unit can be easily used without using a transformer. Can be downsized.
[0030]
According to the automatic illuminating device of the second aspect, in addition to the effect of the first aspect, the light emitted from the LED element is directed to a predetermined area such as a floor surface by the directivity control means. Thus, the predetermined area can be illuminated more brightly.
[0031]
In the automatic illuminating device according to the third aspect, in addition to the effect of the second aspect, the light emitted from the LED element is directionally controlled by the Fresnel lens shape, so that the light emitting device has a small shape and a wide range. Can be illuminated.
[0032]
The automatic illuminating device according to claim 4 has, in addition to the effects of claim 2 or 3, a light emitted from an LED element provided on the same plane so that the intersection angle with the directivity control means is different. However, since the light is directed to a predetermined area such as a floor surface with at least two different directional characteristics, a wider range can be illuminated.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a configuration of an automatic illuminating device according to a first embodiment of the present invention, wherein (a) is a plan view with a cover removed, and (b) is a side sectional view.
FIG. 2 is a block diagram of the automatic lighting device shown in FIG.
3 is an explanatory diagram of an LED element used in the automatic lighting device shown in FIG. 1; FIG. 4 is an explanatory diagram of directivity control means of the automatic lighting device shown in FIG. 1; FIG. 4B is a diagram illustrating a relationship between the directional control cover and the directional control cover, and FIG.
FIG. 5 is an explanatory diagram of light distribution by an illumination unit of the automatic illumination device shown in FIG. 1;
FIG. 6 is an explanatory diagram of a method of attaching the automatic lighting device shown in FIG.
FIGS. 7A and 7B are explanatory diagrams of directivity control means of the automatic illuminating device according to the second embodiment, wherein FIG. 7A is a diagram showing the relationship between an LED element and a directivity control cover, and FIG. It is.
FIG. 8 is a front view of a conventional example.
FIG. 9 is a block diagram of a conventional example.
FIG. 10 is a front view of the nightlight device.
[Explanation of symbols]
1 Heat ray detector (state detector)
2 Illumination part 21 LED element (light source)
21d center axis 24 directional control cover (directional control means)
3 Power supply section

Claims (2)

A state detection unit that is arranged on a wall surface and detects a state change of a predetermined area such as a floor surface, an illuminating unit that illuminates the area with an output from the state detection unit, and a power supply unit that supplies power to each unit, In an automatic lighting device comprising:
The illuminating unit, the light source is formed as a plurality of LED elements , and the illuminating unit has directivity control means for directing light emitted from the light source to the region,
The directivity control means has at least two different directivity characteristics to the area, and a central axis of light distribution of light sources arranged above the light sources arranged in rows and columns, and the directivity control means. The crossing angle of the central control of the light distribution and the directivity control means, although it is disposed below,
And an automatic illuminator , wherein the light source is provided on the same plane so as to illuminate the area near the wall surface in the light distribution based on the result of the directional control of the directional control means disposed above the light source but facing the light source. apparatus. 2. The automatic lighting device according to claim 1 , wherein said pointing control means has a Fresnel lens shape.

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