JPH03233804A - Kitchen apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a kitchen device equipped with a lighting device that serves as a light source around a cooking surface on a top plate.

Conventional technology Conventionally, this type of lighting equipment was installed in the kitchen equipment, so it was often operated with wet or dirty hands, or while holding objects, which caused hygiene and hygiene problems. From the perspective of preventing dangers such as electric shock, there are devices equipped with non-contact operation switches such as pyroelectric sensors and photo sensors that allow you to turn on and off the light source without directly touching the operation part.
It has been developed in recent years.

A conventional lighting device with a lighting function using a non-contact sensor will be described below.

First, the configuration of the lighting device will be explained with reference to FIGS. 8 and 9. As shown in FIG. 8, the lighting device 1 is fixed to the lower surface of a hanging door 2 fixed to at least one wall surface,
It serves as a light source that illuminates the area around the cooking surface of the top plate 4 attached to the cabinet 3. Inside this lighting device,
As shown in FIG. 9, a fluorescent lamp 5. The lighting circuit 6 of the fluorescent lamp 5 consists of a ballast 1 lighting tube and a capacitor for protection, a detection section 7 consisting of elements such as a pyroelectric sensor and a photo sensor, and a detection signal from the detection section 7 is received by the lighting circuit 6. A sensor control unit 8 and the like for controlling power supply ON-OFF is provided. Furthermore, a detection window 9 is provided on the bottom surface of the lighting device main body 1, through which the detection unit 7 receives a detection signal from the outside (in the case of a reflective photosensor, it projects the infrared rays emitted by itself to the outside of the main body 1). .

Therefore, the detection range in the front-rear and up-down directions of the illumination device 1 having the above configuration is within the dotted line hatched area α in FIG.
, or as shown by the lattice portion α'', this is an area that radially spreads downward from the bottom surface of the illumination main body 1, that is, toward the top plate 4. When an object to be detected, such as a person, enters this area, the detection unit 7 The signal is detected, and power is supplied to the lighting circuit 6 via the sensor control unit 8 to turn on the fluorescent lamp 5.

Problems to be Solved by the Invention However, in such a configuration, since the detection window 9 is provided on the bottom surface of the lighting body 1, it is difficult to determine the position of the detection range α°, which is inconvenient in operation. . In particular, if the detection unit 7 is a sensor that detects infrared rays, such as a low-cost reflective photo sensor, if the detection range is set to α, it is possible that the infrared rays reflected on the top plate 4 will be picked up and malfunction. Moreover, even in the case of the above-mentioned detection range α'', if a tall container or pot is placed on the top plate 4, it will be detected, making it inconvenient to use. In some cases, a window 10 for auxiliary lighting is provided on the wall between the door 2, and in such a case, if the light coming through the window 0 is strong, that light will directly enter the detection unit 7, There was also the problem of malfunctions occurring.

The present invention solves these problems, and aims to prevent inconveniences such as malfunctions due to the influence of ambient light and erroneous lighting in an unconscious state, regardless of the type of sensor.

Means for Solving the Problems In order to achieve the above object, the first means is to arrange the sensor detection section in front of the lighting body so that the detection range of the sensor is in front of the lighting body, and furthermore, the detection range is The vertical direction of is set from a plane in front of the front of the sensor that is substantially horizontal to the top plate to a virtual extension plane from the front of the sensor to the front edge of the top plate, and in the second means, the detection range is
The area is defined as a region that does not extend further forward than a virtual vertical plane extending upward from the front edge of the top plate.

Effect: In the first means of the present invention, by bringing the sensor detection section to the front of the lighting main body, the operation section can be easily identified and the operability is improved. Even if a window is provided on the top plate and the rear wall of the hanging door, the light coming from there will not affect the sensor detection section. Moreover, because the detection range is set below the surface in front of the sensor detection unit that is almost horizontal to the top plate, it is not affected by light from fluorescent lights installed on the ceiling in front of the kitchen equipment. , the photosensor will not malfunction.

In addition, in the second means, since the area toward the front of the detection range is contained within a virtual vertical plane extending upward from the front edge of the top plate, even if a person unconsciously approaches the vicinity of the kitchen equipment, it will not be detected. It is also possible to prevent malfunctions such as detecting and turning on the light.

Embodiment Hereinafter, the configuration of a lighting device according to an embodiment of the present invention will be explained with reference to FIGS. 2 to 6. First, as shown in FIG. 2, inside the main body of the lighting device 11 is a fluorescent lamp 12. Stabilizer 1
The lighting circuit 131 of the fluorescent lamp 12, which consists of a lighting tube and a capacitor for miscellaneous protection, etc., receives a detection signal from the detection unit 14 housed in a reflective-reflection type photosensor case and turns off the power supply to the lighting circuit 13 to 0N. -A sensor control unit 15 for OFF control is provided, and the detection unit 14 is fixed from the back side in close contact with the front surface 11° of the lighting device main body 11, and the contact portion of the front surface 11' of the lighting device 11 is detection! B14
A transparent acrylic plate is attached from the front side of the front part 11' of the illumination device 11 to form a sensor detection window 16. has been done. Further, the detection unit 14
Figure 3.

As shown in FIGS. 4 and 5, an infrared light emitting diode 18 and a phototransistor 19 attached to a substrate 17 are housed in a resin case 2 with through holes 20 and 20 at two places on the left and right sides of the front surface.
1, the infrared light emitting diode 18 has a light emitting surface of 18 degrees, and the phototransistor 19 has a light receiving surface of 19 degrees through the front through holes 20 and 20 degrees of the resin case 21, respectively, and the detection window 1
It is stored facing towards the 6th side. The infrared light emitting diode 18 and the phototransistor 19 are both housed in a resin case 21, as shown in FIGS. 4 and 5, respectively.
By making the shape of the inner wall bottom 21' slope downward toward the front, the light emitting surface 18' and the light receiving surface 19' face obliquely downward, and the infrared light emitting diode 18 and the phototransistor 19 are placed in front of the resin case 21. It is placed in a position slightly deeper than the resin case 21 through hole 20.
．． 20 further extends from the position where the upper end of the circle is almost at the upper end of the through hole 22 of the front part 11 of the illumination device W11, and further extends from the resin case 21.
The infrared light emitting diode 18 and the phototransistor 19 have a mounting shape that is inserted into the through holes 20 and 20 degrees, respectively. I am doing it. As shown in FIG.
It is installed as one device in a kitchen device consisting of a hanging door 25 etc. fixed to the wall surface at the top of 4, and is installed by being fixed to the bottom surface of at least one hanging door 25, and serves as a light source that illuminates the area around the cooking work surface of the top plate 24. It is configured to play the role of

In the above configuration, the operation of the embodiment will be explained with reference to FIGS. 1, 4, 5, and 7. As mentioned above, the light emitting surface 18° of the infrared light emitting diode 18 is mounted tilted downward as shown in FIG.
According to the front opening shape of the through hole 20 on the front surface of the resin case 21, the infrared rays projected from Similarly, from the detection window 16 where the light-receiving surface 19' of the photodiode 19 can receive light, the through hole 22 at the front surface 11° of the illumination device 11 extends radially.
The infrared rays that enter through the through hole 20° of the resin case 21 are transmitted through the through hole 20° of the resin case 21 and the light receiving surface 19.
In this case, the upper part is the range from arrow to the lower part is the upper and lower range between arrow b°. Therefore, the detection unit 14
The detection range in the vertical direction is between the light emitting areas aa' and
Since it is determined within the range between the light receiving areas bb', it becomes the shaded area C shown in FIG. In other words, the upper limit of the diagonal line C is a plane that is almost horizontal to the top plate 24, since the arrow a and the arrow s are placed in front of the detection window 16 in a direction approximately perpendicular to the detection window 16.
Since the lower limit of the shaded area C is angled so that the virtual extension line of the arrows a° and b° comes almost to the front edge of the top plate 24, it is natural that the lower limit of the shaded area C will be almost at the sensor detection area. 14
It is a virtual extension surface ■ from the front to the front edge of the top plate 24.

When a detected object 26 such as a person or a human hand enters the detection range of the detection unit 14 determined as described above as shown in FIG. The infrared ray d projected from the infrared light emitting diode 18 in the detection unit 14 driven by the current source 27 in the detection unit 26
The phototransistor 19 in the detection unit 14 receives the reflected infrared d°, and the light reception signal of the phototransistor 19 is amplified by the amplifier unit 28 in the sensor control unit 15 and sent to the sensor control unit 15. Turn on relay 29
It is transmitted as a signal and turns on the relay 29. Then, the AC power supply 30 is supplied to the lighting circuit 13, and the lighting device 1
Fluorescent lamp 12, which is one light source, is turned on. Also, current source 2
The current value supplied from 7 to the infrared light emitting diode 18 is
When the position of the detected object 26 is further forward than the front edge of the top plate 24, the infrared ray d° reflected by the detected object 26 is limited to a level lower than the light receiving sensitivity of the phototransistor 19. Therefore, the distance in the front direction of the diagonal line area C, that is, the detection distance of the detection unit 14 is the virtual vertical plane {circle around (2)} extending upward from the front edge of the top plate 24 between the work surface and the surface {circle around (2)}. That's it.

As described above, according to the lighting device 11 of the embodiment of the present invention, the sensor detection unit 14 disposed at the front side 11° of the lighting device 11
The detection range C is, in the vertical direction, from a surface ■ which is approximately horizontal to the top plate 24 in front of the front of the detection unit 14 to an imaginary extended plane ■ from the front of the detection unit 14 to the front edge of the top plate 24. Since the direction is from the front edge of the top plate 24 to the virtual vertical plane (■) extending upward, as shown in FIG. Light e coming in from the window 31 for auxiliary light of the light source 11 and the ceiling 3 in the kitchen room.
Since the light f from the main lighting device 33 in the kitchen installed in the kitchen room 2 is outside the detection range c of the sensor detection unit 14, these lights e, f, etc. do not directly enter the detection unit 14. Moreover, since the infrared rays d emitted by the detection unit 14 are not reflected on the top plate 24, the illumination device 11 will not malfunction due to these factors. Furthermore, even if a person approaches the vicinity of the top plate 24 without intending to turn on the light, the infrared rays that hit the person and reflect will be detected by the detection unit 14.
It is also possible to prevent a malfunction in which the fluorescent lamp 12 of the illumination device 11 is turned on due to the detection.

As described above, in the above embodiment, the detection area of the detection unit 14 has been explained only in the vertical direction and the front direction, but of course the detection area also exists in the left and right directions, but this does not provide any of the effects described here. I have omitted the explanation because it is common knowledge that it has an impact. Furthermore, here, an example has been explained in which both the infrared light-emitting diode 18 and the phototransistor 19 are installed at a downward angle. As long as the vertically projected infrared region of the light emitting diode 18 includes the vertical direction of the detection range C, the above effect can be satisfied even if the vertical region is larger than the detection range C.

Note that even if the sensor of the lighting device 11 is of a type that detects heat rays emitted by a person, such as the pyroelectric sensor mentioned as an example in the conventional example, the incident light e from the window 31 on the rear wall is originally Since it is not affected by the light f from the main lighting device 33 on the ceiling 32, there is no need to limit the detection range C above and below. It goes without saying that if it is set to be effective against the heat rays up to ■ in the detection area C, the same effect can be obtained.

Effects of the Invention As is clear from the above embodiments, according to the present invention, a sensor detection section of a lighting device with a lighting function using a non-contact sensor is disposed in the front of the lighting device, and the detection area of the sensor is located in front of the sensor. Since it is taken from a plane in front that is almost horizontal to the top plate to a virtual extended plane from the front of the sensor to the front edge of the top plate, there is no light coming from the lighting on the ceiling or the window installed on the rear wall. It is possible to prevent the sensor from malfunctioning due to the influence of ambient light around the lighting device.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a kitchen device showing the detection range in a lighting device according to an embodiment of the present invention, Fig. 2 is an external perspective view of the lighting device, and Fig. 3 is an enlarged front view of the main parts around the sensor detection part. figure,
Figure 4 is a sectional view taken along line BB' in Figure 3, Figure 5 is a sectional view taken along line c-c' in Figure 3, Figure 6 is a front view of the same kitchen device, and Figure 7 is a sectional view taken along line CC' in Figure 3.
The figure is a circuit block diagram of the lighting device, FIG. 8 is a front view of a kitchen equipment installed with the conventional lighting device, FIG. 9 is an external perspective view of the lighting device, and FIG. 10 is the detection range of the lighting device. FIG. 8 is a sectional view taken along line DD′ in FIG. 8; 11...Lighting device main body, 14...Sensor detection unit, 23...Cabinet, 24...
...Top plate, 25...Hanging door, C...
Sensor detection area, I, n, I[I...virtual line.

Claims (2)

[Claims] (1) A top plate is attached to the cabinet, and above the top plate there is a hanging door fixed to the wall, which serves as a light source when cooking on the top plate, and which is placed on the bottom of the hanging door. This lighting device has a switching device on the front side of the lighting device using a non-contact type sensor such as an infrared ray that detects a human body and controls the lighting and extinguishing operation of the light source. A kitchen device characterized in that a detection range is set from a plane in front of the front of the sensor that is substantially horizontal to the top plate to a virtual extension plane from the front of the sensor to the front edge of the top plate. (2) The kitchen apparatus according to claim 1, wherein the detection range of the sensor in the front direction does not extend beyond a virtual vertical plane extending upward from the front edge of the top plate.