JP7534771B2 - Range hood - Google Patents

Description

The present invention relates to a range hood equipped with lighting that adjusts color depending on the surrounding lighting color.

Currently, residential spaces such as bedrooms, living rooms, and kitchens are equipped with various types of lighting with optimal lighting colors depending on the environment of the space and the user's preferences.

However, indoor spaces generally have windows through which sunlight and external light from external lighting can enter, and the lighting environment within the space can change significantly depending on the season and time of day.

Therefore, if you want to maintain the lighting environment in your home according to your preferences, you need to frequently adjust the illuminance and color of the lighting.

One example of an invention that can make this adjustment automatically is disclosed in Patent Document 1. This invention measures the lighting environment, such as the illuminance and color of lighting, and automatically adjusts the lighting environment in the home space to the user's preferred lighting environment.

On the other hand, in the kitchen, a range hood is installed in the home space, so in the case of the kitchen, there are at least two types of lighting: ceiling lighting and range hood lighting (RH lighting) that illuminates the heating cooker installed under the range hood.

In the case of island kitchens, which have become popular in recent years, in addition to ceiling-mounted lighting and RH lighting, there are also living room lights placed in the living room and indirect lighting placed on the floor.

The kitchen occupies a large area within the home and is where people spend a lot of time. For this reason, coordinating lighting within a home requires a lighting design that includes all lighting, including ceiling lighting, living room lighting, indirect lighting, and kitchen lighting, as well as RH lighting.

In the invention disclosed in Patent Document 2, the RH lighting is turned on and off in conjunction with a cooking device operated by the user, and the illuminance of the RH lighting is changed based on the detection results of an illuminance sensor so that the illuminance of the RH lighting is constant.

However, even the invention disclosed in Patent Document 2 does not coordinate the range hood lighting with the overall lighting in the home, nor does it consider the lighting colors of the ceiling lighting and the RH lighting to create a unified lighting environment in the kitchen.

JP 2013-041718 A Patent No. 5151016 specification

In general, in range hoods used in cooking environments, the detection results of the illuminance sensor are often affected by external noise such as oil smoke, cooking flames, and the user's shadow.

In particular, when an illuminance sensor is installed on the top plate of a cooking appliance, as in the invention disclosed in Patent Document 2, the detection results of the illuminance sensor are significantly affected by external noise, making it impossible to accurately detect the illuminance of the RH lighting.

Therefore, in order to create a unified lighting environment in the home, including the kitchen, it is necessary not only to apply the inventions in Patent Documents 1 and 2, but also to install a range hood with special features for RH lighting.

Therefore, in order to create a unified lighting environment in the home, including the kitchen, the objective is to provide a range hood equipped with lighting that adjusts color in response to the surrounding lighting color without being affected by external noise, even in environments that are easily affected by external noise, such as cooking environments.

The range hood of the present invention, which achieves the above object, is provided with a hood section disposed above a cooking appliance and having an opening for sucking in oily smoke generated by cooking, a blower that generates suction force to suck in the oily smoke from the opening, a lighting section that is provided on the opening side of the hood section and has an illumination angle range that is closer to the cooking appliance than the hood section, and a light emission control section that controls the light emission of the lighting section, and further includes a first sensor that detects information about ambient light around the range hood, the first sensor has a detection area only outside the illumination angle range of the lighting section, and the light emission control section controls the light emission based on the information about ambient light detected by the first sensor.

According to the range hood of the present invention, the first sensor, whose detection area is only outside the illumination angle range of the lighting unit, detects information about the ambient light around the range hood, and light emission is controlled based on the ambient light information detected by the first sensor. This makes it possible to harmonize the lighting color of the lighting unit with the surrounding lighting color without being affected by external noise, even in an environment that is easily affected by external noise, such as a cooking environment.

FIG. 1 is a front view of a range hood according to a first embodiment installed in a kitchen. 1 is a right-side cross-sectional view of the range hood of the first embodiment installed in a kitchen. FIG. FIG. 2 is a diagram showing an illumination section of the range hood of the first embodiment. FIG. 2 is a diagram showing a sensor mounting portion of the range hood of the first embodiment. FIG. 5 is a detailed view of the sensor mounting portion of FIG. 4 . 4 is a diagram showing an illumination unit having a different form from that of FIG. 3 . 7 is a diagram showing an illumination unit having a different form from the illumination units of FIGS. 3 and 6. FIG. 5 is a diagram showing a sensor mounting portion at a position different from that shown in FIG. 4; 9 is a diagram showing a sensor mounting portion in a position different from that shown in FIG. 4 and FIG. 8 . FIG. 2 is a block diagram of a control system of the range hood of the first embodiment. 11 is a flowchart showing the operation of the light emission control unit in FIG. 10 . 13A and 13B are diagrams showing the structure of the lighting section of the range hood of the second embodiment and the mounting position of the second sensor. 13 is a diagram showing an illumination unit having a structure different from that shown in FIG. 12 and an attachment position of a second sensor. FIG. 11 is a block diagram of a control system of a range hood according to a second embodiment. 15 is a flowchart showing the operation of the light emission control unit in FIG. 14 . 16 is an operation flowchart different from that of FIG. 15 .

Below, the range hood of the present invention will be described in detail with reference to the drawings, divided into embodiment 1 and embodiment 2. The range hood of the present invention is not limited to the configurations described in the following embodiments 1 and 2. Note that the drawings are exaggerated for the convenience of explanation. Therefore, the dimensional ratios of each component in each drawing may differ from the actual ones. Also, the same elements in the drawings are given the same reference numerals, and duplicate explanations will be omitted in the specification.

[Embodiment 1]
(Range hood configuration)
Fig. 1 is a front view of the range hood of the first embodiment when installed in a kitchen. Fig. 2 is a right side cross-sectional view of the range hood of the first embodiment when installed in a kitchen.

As shown in Figs. 1 and 2, the range hood 100 of this embodiment is installed on top of the cooking appliance 200. The range hood 100 sucks in odors, smoke, oil, and other oily smoke generated during cooking on the cooking appliance 200 and exhausts them to the outside. The cooking appliance 200 shown as an example has two heat sources 210. In this specification, the heat source 210 refers to a burner or a trivet located near the burner for a gas cooking appliance 200, and a heater for an induction cooking appliance 200.

The range hood 100 has a hood section 120 that sucks in oil smoke generated by cooking with the cooking device 200. An opening 110 is formed on the underside of the hood section 120. The opening 110 sucks in oil smoke, including odors, smoke, oil, etc., generated during cooking with the cooking device 200. A blower box 115 is provided on the upper side of the center of the hood section 120. A blower 130 is arranged inside the blower box 115. The blower 130 generates a suction force to suck in oil smoke from the opening 110 and exhausts the sucked oil smoke to the outside. The front side of the hood section 120 is provided with a switch section 125 necessary for the operation of the range hood 100. The switch section 125 is provided with a lighting switch (not shown) for turning on the lighting section 150. Note that the automatic color adjustment mode is switched on by pressing the lighting switch for a predetermined period of time.

A filter 140 is provided between the opening 110 and the blower 130 to remove oil from the oily smoke sucked in from the opening 110. When the blower 130 rotates, the filter 140 also rotates. The range hood 100 may be provided with a fixed filter that does not rotate, or may not be provided with a filter.

The range hood 100 has an illumination unit 150 that illuminates the top surface of the cooking appliance 200. The illumination unit 150 is an LED light that can change the illuminance and color of the illumination. The illumination unit 150 is provided on the opening 110 side of the hood unit 120 and in the center of the front side of the hood unit 120. The illumination unit 150 has an irradiation angle range on the cooking appliance 200 side, as shown by the dotted line spreading downward from the illumination unit 150 (see Figures 1 and 2). In this specification, the irradiation angle range refers to the angle range in which the light beam of the irradiation light spreads, and does not include diffusely reflected return light in which the illuminance does not drop to a certain amount. Therefore, the irradiation angle range does not mean, for example, an angle range limited only to a range of 45 degrees around the downward perpendicular line.

A first sensor 160 that detects ambient light information of the range hood 100 is provided on the top surface side of the range hood 100. The first sensor 160 is provided on the top surface side of the hood section 120 and on the left side of the front surface side of the hood section 120. Ambient light information of the range hood 100 is information on light characteristics such as the lighting color, wavelength, illuminance, color temperature, etc. of the ceiling-mounted lighting in the kitchen where the range hood 100 is installed. The first sensor 160 has a detection area only outside the illumination angle range of the lighting section 150, as shown by the dotted line spreading upward from the first sensor 160 (see Figures 1 and 2). The first sensor 160 is a color sensor that detects the lighting color of the ceiling-mounted lighting in the kitchen as RGB values.

In this way, the detection area of the first sensor 160 is set outside the illumination angle range of the lighting unit 150. If the detection area of the first sensor 160 were included in the illumination angle range of the lighting unit 150, the first sensor 160 would detect not only the lighting color of the ceiling light in the kitchen, but also the lighting color of the lighting unit 150 as ambient light information.

The illumination color of the illumination unit 150 is controlled by a light emission control unit (not shown) based on the ambient light information detected by the first sensor. The light emission control unit is provided inside the range hood 100.

Figure 3 is a diagram showing the lighting section of the range hood of the first embodiment. The lighting section 150 is disposed on the opening 110 side of the hood section 120 and in the center of the front side of the hood section 120, so as to extend a certain length from the center of the hood section 120 to the left and right on the front side of the hood section 120. Therefore, the lighting section 150 irradiates light to an area including the top surface of the cooking device 200 (see Figures 1 and 2).

Figure 4 is a diagram showing the sensor mounting portion of the range hood of embodiment 1. Figure 5 is a detailed diagram of the sensor mounting portion of Figure 4.

As shown in FIG. 4, the sensor mounting portion 170 is provided at a position offset to the left of the center of the front side of the hood portion 120 of the range hood 100. Therefore, the first sensor 160 is positioned at the left end of the front side of the hood portion 120 of the range hood 100. This allows the first sensor 160 to detect the color of the lighting above the hood portion 120 (the color of the ceiling-hanging lighting in the kitchen) as information about the ambient light of the range hood 100. The first sensor 160 is built into the hood portion 120 as shown in FIG. 5.

The first sensor 160 is composed of a sensor board 162, a sensor cover 164, and a sensor box 166. A detection section 163, which is the main part of the first sensor 160, is formed on the upper surface of the sensor board 162. A transparent window section 165 is provided on the upper surface of the sensor cover 164.

As shown in the figure, the sensor board 162 is housed in the sensor cover 164 so that the detection unit 163 is positioned in the window portion 165 of the sensor cover 164. The sensor cover 164 housing the sensor board 162 is attached to the sensor box 166. The sensor box 166 to which the sensor cover 164 is attached is attached inside the hood section 120 so that the window portion 165 of the sensor cover 164 faces the opening portion 168 of the hood section 120. This allows the first sensor 160 to detect the lighting color above the hood section 120 through the opening portion 168 and the window portion 165.

Providing the sensor mounting portion 170 in a position as shown in FIG. 4 reduces the influence of external noise such as oil smoke generated during cooking, cooking flames, and the user's shadow, and allows the lighting color above the hood portion 120 to be detected accurately. In addition, because the sensor mounting portion 170 is hidden above the hood portion 120, the design of the range hood 100 is improved.

Figure 6 is a diagram showing an illumination unit having a different configuration from that of Figure 3. Figure 7 is a diagram showing an illumination unit having a different configuration from that of Figures 3 and 6.

In FIG. 6, the lighting unit 150 is provided on the side of the blower box 115, and in FIG. 7, the lighting unit 150 is provided on the top of the hood portion 120. The lighting unit 150 shown in FIG. 6 and FIG. 7 differs from the lighting unit 150 in FIG. 3, which provides direct lighting, in that it provides indirect lighting by emitting slit light 152 as shown.

As shown in FIG. 6, when the lighting unit 150 is provided on the side of the blower box 115 and slit light 152 is emitted from the lighting unit 150 toward the ceiling, the lighting unit 150 can be used as cove lighting. Cove lighting is lighting that shines light directly onto the ceiling and uses the reflected light as illumination. Cove lighting is generally used in hotel lobbies and bedrooms, and can give the lighting environment a sense of luxury.

Therefore, if a range hood that uses the lighting unit 150 in Figure 6 is installed in an island kitchen, it can give a luxurious feel to the lighting environment in the kitchen.

As shown in FIG. 7, if the lighting unit 150 is provided on top of the hood unit 120 and slit light 152 is emitted from the lighting unit 150 toward the wall surface, the lighting unit 150 can function as cornice lighting. Cornice lighting shines light directly onto the wall surface to brighten it, and the reflected light is used as illumination. This allows the uneven pattern on the wall to create beautiful light shadows. Cornice lighting has the effect of making the space feel larger by brightening the wall surface.

Therefore, if a range hood that uses the lighting unit 150 in Figure 7 is installed in an island kitchen, the kitchen space can be made to feel larger.

Figure 8 is a diagram showing a sensor mounting portion in a different position from that shown in Figure 4. Figure 9 is a diagram showing a sensor mounting portion in a different position from that shown in Figures 4 and 8. In Figure 8, the sensor mounting portion 170 is provided above the hood portion 120, and in Figure 8, the sensor mounting portion 170 is provided on the outer peripheral side portion (duct cover) of the hood portion 120. Note that the configuration of the first sensor 160 placed on the sensor mounting portion 170 is the same as that shown in Figure 5.

As shown in FIG. 8, if the sensor mounting portion 170 is provided above the hood portion 120, for example, on the side of the blower box 115, the hood portion 120 blocks the oily smoke and cooking flames generated during cooking, and the sensor is less susceptible to external noise such as the user's shadow. This allows the first sensor 160 to accurately detect the color of the lighting above the hood portion 120. In addition, the first sensor 160 is less likely to become soiled by oily smoke.

"Above the hood section 120" is not limited to the position shown in FIG. 8, but includes various positions such as the fascia of the range hood 100 and the blower body box.

As shown in FIG. 9, if the sensor mounting portion 170 is provided on the outer peripheral side portion of the hood portion 120, for example, on the side of the switch portion 125, the first sensor 160 can be incorporated not only in the position shown in FIG. 9, but also inside the switch portion 125, allowing the first sensor 160 to be positioned in a neat manner.

(Range hood operation)
Fig. 10 is a block diagram of a control system of the range hood of embodiment 1. Fig. 11 is an operation flowchart of the light emission control unit of Fig. 10.

As shown in FIG. 10, the first sensor 160 and the lighting unit 150 are connected to the light emission control unit 180. The configurations of the first sensor 160 and the lighting unit 150 are as described above. The light emission control unit 180 is built into the hood unit 120, and performs light emission control to adjust the color of the light emitted by the lighting unit 150 based on the information on the ambient light detected by the first sensor 160.

The operation flowchart in FIG. 11 is processed by pressing the lighting switch provided in the switch unit 125 (see FIG. 1) for a predetermined period of time, and the mode changes to the automatic color adjustment mode. When the mode changes to the automatic color adjustment mode, the light emission control unit 180 detects the color of the surrounding light and controls the light emission of the LEDs of the lighting unit 150 as follows.

As shown in FIG. 11, the light emission control unit 180 first detects ambient light information using the first sensor 160 (S100). Ambient light information is information about light characteristics such as the lighting color, wavelength, illuminance, and color temperature of a ceiling light in the kitchen. Since the first sensor 160 is a color sensor, the lighting color is detected as RGB values.

Next, the light emission control unit 180 controls the light emission of the illumination unit 150 based on the information about the ambient light detected by the first sensor 160. That is, the light emission control unit 180 changes the color of the light emitted by the illumination unit 150 so that it approaches the RGB values detected by the first sensor 160 (S110).

To perform this type of light emission control, the light emission control unit 180 has a lookup table that associates the ambient light information detected by the first sensor 160 with the color of the light emitted by the lighting unit 150. The light emission control unit 180 refers to this lookup table so that the color of the light emitted by the lighting unit 150 approaches the color of the light from the ceiling light in the kitchen.

By having the light emission control unit 180 perform this type of light emission control, it is possible to create a unified lighting environment in the kitchen.

[Embodiment 2]
(Range hood configuration)
The configuration of the range hood 100 of the second embodiment is substantially the same as the configuration of the range hood 100 of the first embodiment shown in Figures 1 to 9. However, the range hood 100 of the second embodiment differs from the range hood 100 of the first embodiment in that a second sensor 190 is provided near the illumination unit 150, and the light emission control unit 180 controls the light emission based on the detection values of the first sensor 160 and the second sensor 190.

Figure 12 is a diagram showing the structure of the lighting section of the range hood of embodiment 2 and the mounting position of the second sensor. As shown in the figure, the lighting section 150 is configured with multiple LEDs 155 arranged in a line at regular intervals. The second sensor 190 is mounted on the glass substrate 158 in a position facing the direction of irradiation of the lighting section 150.

In this way, by arranging the second sensor 190 facing the lighting unit 150, the second sensor 190 can directly detect information on the light emitted from the lighting unit 150. Due to its characteristics, the LED 155 may have variations in light color and brightness. For this reason, if the second sensor 190 is used to directly detect the lighting color of the lighting unit 150, it is easier to deal with variations in the light color and brightness of the LED 155 compared to the case in which the lighting color of the lighting unit 150 is controlled using only the first sensor 160, as in embodiment 1. Therefore, it is easier to make the lighting color of the lighting unit 150 closer to the lighting color of the ceiling lighting in the kitchen, and it is possible to create a sense of unity in the color of the light irradiated into the kitchen space.

The second sensor 190 does not necessarily have to be provided at a position as shown in FIG. 12. It may be provided at a position where it can detect information on the light irradiated from the LED 155, that is, near the lighting unit 150 as shown in FIG. 13. The vicinity of the lighting unit 150 refers to a location at least within the irradiation angle range of the lighting unit 150 where the illumination color of the light irradiated by the lighting unit 150 can be detected with a certain degree of accuracy. For example, it is a predetermined position of the lighting unit 150, a position where the light irradiated from the lighting unit 150 can be directly detected, and a position where the illumination space of the lighting unit 150 can be directly detected. Furthermore, it also includes a position where the light irradiated from the lighting unit 150 can be indirectly detected through space. The lighting unit 150 may be either direct lighting or indirect lighting. It is preferable that the second sensor 190 uses the same color sensor as the first sensor 160.

Figure 13 is a diagram showing an illumination unit with a different structure from that of Figure 12 and the mounting position of the second sensor. As shown in the figure, the illumination unit 150 is configured by arranging multiple LEDs 155 in a line at regular intervals. However, in this embodiment, the second sensor 190 is provided in a position sandwiched between two LEDs 155, unlike Figure 12.

In this way, by locating the second sensor 190 in a position sandwiched between the two LEDs 155, it becomes possible to detect information about the light emitted from the illumination unit 150 through space, rather than directly as in FIG. 12.

It is preferable to hide the second sensor 190 so that it is not visible to the user. In the case of FIG. 12, it is preferable to process the glass substrate 158 so that the second sensor 190 is hidden. In the case of FIG. 13, the part of the glass substrate 158 facing the second sensor 190 may be covered with a resin or processed with a reflective material to hide the second sensor 190.

(Range hood operation)
Fig. 14 is a block diagram of a control system of the range hood of embodiment 2. Fig. 15 is an operation flowchart of the light emission control unit of Fig. 14 .

As shown in FIG. 14, the light emission control unit 180 is connected to the first sensor 160, the second sensor 190, and the lighting unit 150. The configurations of the first sensor 160, the second sensor 190, and the lighting unit 150 are as described above. The light emission control unit 180 is built into the hood unit 120, and based on the ambient light information detected by the first sensor 160 and the irradiated light information detected by the second sensor 190, controls the light emission of the lighting unit 150 so that the irradiated light information detected by the second sensor 190 approaches the ambient light information detected by the first sensor 160.

Specifically, the light emission control unit 180 controls the illumination color of the illumination unit 150 based on the RGB values detected by the first sensor 160 and the second sensor 190 so that the RGB values detected by the second sensor 190 approach the RGB values detected by the first sensor 160.

As shown in FIG. 15, the light emission control unit 180 first detects ambient light information using the first sensor 160 (S200). The ambient light information is, for example, the lighting color of a ceiling light in the kitchen. Since the first sensor 160 is a color sensor, the lighting color is detected as RGB values (for example, R: 251, G: 249, B: 241).

Next, the light emission control unit 180 detects information about the illumination light of the illumination unit 150 using the second sensor 190 (S210). The illumination light information is the illumination color of the light emitted from the LED 155 that constitutes the illumination unit 150. Since the second sensor 190 is a color sensor, the illumination color of the illumination unit 150 is detected as RGB values (e.g., R: 207, G: 224, B: 226).

Next, the light emission control unit 180 controls the light emission of the illumination unit 150 based on the RGB values of the illumination color detected by the first sensor 160 and the RGB values of the illumination light detected by the second sensor 190 so that the RGB values detected by the second sensor 190 approach the RGB values detected by the first sensor 160. In other words, the light emission control unit 180 changes the color of the illumination light emitted by the illumination unit 150 so that the RGB values detected by the first sensor 160 and the RGB values detected by the second sensor 190 become illumination colors with the same RGB values (S220).

The operation flowchart in FIG. 15 is processed by pressing the lighting switch provided in the switch unit 125 (see FIG. 1) for a predetermined period of time, and the mode transitions to the automatic color adjustment mode. When the mode transitions to the automatic color adjustment mode, the light emission control unit 180 detects information on the ambient light and illumination light, and controls the light emission of the LEDs of the illumination unit 150, as follows:

As shown in FIG. 15, the light emission control unit 180 first detects ambient light information using the first sensor 160 (S200). Ambient light information is information about light characteristics such as the lighting color, wavelength, illuminance, and color temperature of a ceiling light in the kitchen. Since the first sensor 160 is a color sensor, the lighting color is detected as RGB values.

Next, the light emission control unit 180 detects information about the illumination light of the illumination unit 150 using the second sensor 190 (S210). The information about the illumination light is information about the characteristics of the light, such as the illumination color, wavelength, illuminance, and color temperature of the light emitted from the LED 155 that constitutes the illumination unit 150. Since the second sensor 190 is a color sensor, the illumination color of the illumination unit 150 is detected as RGB values.

Next, the light emission control unit 180 calculates the ratio α1=G/B between the two color values of the RGB values detected by the first sensor 160, and calculates the ratio α2=G/B between the two color values of the RGB values detected by the second sensor 190, and by comparing the two calculated ratios α1 and α2, controls the illumination color of the illumination unit 150 to approach the RGB values detected by the first sensor 160 (S220).

Specifically, suppose that the GB value detected by the first sensor 160 is (256,256) (white), and the GB value detected by the second sensor 190 is (128,64) (yellow). In this case, the ratio α1 of the GB values of the first sensor 160 is 256/256 = 1, and the ratio α1 of the GB values of the second sensor 190 is 128/64 = 2. In this case, since α1 (ambient light) < α2 (illumination light), the light emission control unit 180 lowers the warm color fixed output value and raises the daylight color fixed output value so that the yellow lighting color of the lighting unit 150 detected by the second sensor 190 approaches the white lighting color of the ceiling-mounted lighting in the kitchen.

To perform this type of light emission control, the light emission control unit 180 has a comparator function that compares the ambient light information detected by the first sensor 160 with the ambient light information detected by the second sensor 190. Using this comparator function, the light emission control unit 180 compares the ratio of the GB values of the color of the light in the kitchen space and the color of the light irradiated by the lighting unit 150, and adjusts the color of the light irradiated by the lighting unit 150 so that the color of the light irradiated by the lighting unit 150 approaches the color of the lighting from the ceiling hanging in the kitchen.

Figure 16 is an operational flowchart of a different form from that of Figure 15. This operational flowchart is processed by the light emission control unit 180 of Figure 14.

In the operation flowchart of FIG. 16, the process is started by pressing the lighting switch provided in the switch unit 125 (see FIG. 1) for a predetermined period of time, and the mode switches to the automatic color adjustment mode. When the mode switches to the automatic color adjustment mode, the light emission control unit 180 detects information on the ambient light and the irradiated light, and controls the light emission of the LEDs of the lighting unit 150 as follows.

As shown in FIG. 16, the light emission control unit 180 first detects ambient light information (R, G, B) using the first sensor 160 (S300). Ambient light information is information about light characteristics such as the lighting color, wavelength, illuminance, and color temperature of a ceiling light in the kitchen. Since the first sensor 160 is a color sensor, the lighting color is detected as RGB values.

Next, the light emission control unit 180 detects information (R, G, B) of the illumination light from the illumination unit 150 using the second sensor 190 (S310). The illumination light information is information on the characteristics of light, such as the illumination color, wavelength, illuminance, and color temperature of the light emitted from the LED 155 that constitutes the illumination unit 150. Since the second sensor 190 is a color sensor, the illumination color of the illumination unit 150 is detected as RGB values.

The light emission control unit 180 obtains the G and B ratio values (α1, α2) from the acquired RGB values of each sensor 160, 190 (S320). The G and B ratio values (α1, α2) are color ratio values. When obtaining the ratio value (α), the calculation method of the ratio value may be changed according to the sensitivity level setting of the sensor. Specifically, when the sensitivity level is set low, the number of measurements may be increased and the average ratio may be set as the ratio value (α). For example, when the measurement time is 20 ms, the average ratio of six measurements may be set as the ratio value (α). On the other hand, when the sensitivity level is set high, the number of measurements may be reduced to obtain the ratio value (α). For example, when the measurement time is 200 ms, the ratio of one measurement may be set as the ratio value (α).

The light emission control unit 180 compares the GB ratio value (α1) of the ambient light with the GB ratio value (α2) of the illumination light (S330). If the GB ratio value (α1) and the GB ratio value (α2) are the same (S330: YES), the process returns to step S300 and detects the ambient light information. On the other hand, if the GB ratio value (α1) and the GB ratio value (α2) are not the same (S330: NO), the process proceeds to the next step S340.

The light emission control unit 180 controls the change of the warm color/daylight color output value of the lighting unit 150 according to the comparison result of the GB ratio value. In other words, the light emission control unit 180 controls the change of the warm color/daylight color output value of the lighting unit 150 according to the comparison result of the calculated GB ratio values α1 and α2 so that the GB ratio value (α1) and the GB ratio value (α2) match.

Specifically, suppose that the GB value detected by the first sensor 160 is (256,256) (white), and the GB value detected by the second sensor 190 is (128,64) (yellow). In this case, the GB ratio value α1 of the first sensor 160 is 256/256=1, and the GB ratio value α2 of the second sensor 190 is 128/64=2. In this case, since α1 (ambient light) < α2 (illumination light), the light emission control unit 180 lowers the warm color fixed output value and raises the daylight color fixed output value so that the yellow lighting color of the lighting unit 150 detected by the second sensor 190 becomes the white lighting color of the ceiling-mounted lighting in the kitchen.

In this embodiment, the illumination color of the illumination unit 150 is controlled by a binary ratio value of GB, rather than a ternary ratio value of RGB. By using a binary value, the following effects can be expected.

If the lighting of the lighting unit 150 installed in the range hood 100 outputs a color tone (color temperature) of 2700K to 6500K, when the color tone (color temperature) of 2700K to 6500K is converted to RGB values, only the GB value changes. Therefore, when controlling the lighting color, there is no need to take the R value into consideration.

As a result, only the GB values need to be calculated, eliminating the need for unnecessary calculations and making it possible to measure color with simple control.

By having the light emission control unit 180 perform this type of light emission control, it is possible to create a unified lighting environment in the kitchen.

As described above, in the first and second embodiments, the color of the light emitted from the lighting unit 150 of the range hood 100 is made to be close to the color of the ambient light around the range hood 100. Therefore, even in an environment susceptible to external noise, such as a cooking environment, the lighting color of the lighting unit can be made to harmonize with the surrounding lighting color without being affected by external noise, creating a sense of unity in the lighting environment of the kitchen.

In the first embodiment, the first sensor 160 detects the lighting color of the ceiling light in the kitchen. However, the lighting color detected by the first sensor 160 is not limited to this, and may be, for example, lighting in the dining room, living room, indirect lighting, or any other lighting in the home, not limited to the ceiling light in the kitchen.

The range hood 100 can also function as indirect lighting. For example, as shown in FIG. 6, a slit for emitting illumination light is provided on the side of the blower box 115 of the range hood 100, and the light is irradiated onto the ceiling. The range hood 100 can be used as so-called cove lighting, which uses the reflected light from the ceiling as indirect lighting.

As shown in FIG. 7, lighting units 150 can be provided on the sides and top of the range hood 100 to illuminate the wall surface and function as indirect lighting. This allows the range hood 100 to be used as a so-called cornice lighting system that uses the reflected light from the wall surface as indirect lighting.

The second sensor 190 can detect not only the color of the surrounding lighting, but also the color of the interior of the walls, furniture, etc. This allows the light emission control unit 180 to, for example, create a softer feeling throughout the room by increasing the fixed daylight output value when the wall color is mainly gray, such as a concrete wall.

The range hood 100 can also be linked to home lighting equipment by connecting it to a home network. In this case, the RGB values of each lighting device are collected in the controller, and the controller can centrally control each lighting device, including the lighting unit 150 of the range hood 100, according to the behavior patterns and preferences of the home user, making it possible to more optimally design the lighting in the home.

The above describes an embodiment of the range hood of the present invention, but the technical scope of the present invention is not limited to the content disclosed in this embodiment.

REFERENCE SIGNS LIST 100 Range hood 110 Opening 115 Blower box 120 Hood section 125 Switch section 130 Blower 140 Filter 150 Lighting section 152 Slit light 155 LED
REFERENCE SIGNS LIST 158 Glass substrate 160 First sensor 162 Sensor substrate 163 Detection section 164 Sensor cover 165 Window section 166 Sensor box 168 Opening section 170 Sensor mounting section 180 Light emission control section 190 Second sensor 200 Cooking device 210 Heat source

Claims (8)

A hood portion is disposed above the cooking device and has an opening portion for sucking in oily smoke generated by cooking;
A blower that generates a suction force for sucking in the oily smoke from the opening;
A lighting unit is provided on the opening side of the hood unit and has an illumination angle range on the cooking device side of the hood unit;
A light emission control unit that controls light emission of the illumination unit;
In a range hood comprising:
A first sensor is further provided for detecting color information of the ambient light of the range hood.
the first sensor has a detection area outside the illumination angle range of the illumination unit,
The light emission control unit controls the color of the illumination unit based on color information of the ambient light detected by the first sensor so as to approach the color information of the ambient light detected by the first sensor.
A range hood characterized by the above. A hood portion is disposed above the cooking device and has an opening portion for sucking in oily smoke generated by cooking;
A blower that generates a suction force for sucking in the oily smoke from the opening;
A lighting unit is provided on the opening side of the hood unit and has an illumination angle range on the cooking device side of the hood unit;
A light emission control unit that controls light emission of the illumination unit;
In a range hood comprising:
A first sensor that detects information about ambient light of the range hood;
a second sensor provided near the illumination unit and configured to detect information on the illumination light emitted from the illumination unit;
Further equipped with
the first sensor has a detection area outside the illumination angle range of the illumination unit,
The light emission control unit performs color adjustment control of the illumination unit based on information about the ambient light detected by the first sensor and information about the irradiated light detected by the second sensor, so as to approach the information about the ambient light detected by the first sensor.
A range hood characterized by the above. the first sensor is a color sensor;
The light emission control unit controls an illumination color of the illumination unit based on the RGB value detected by the first sensor so as to approach the RGB value detected by the first sensor.
The range hood according to claim 1 . the first sensor and the second sensor are constituted by color sensors;
the light emission control unit controls the illumination color of the illumination unit based on the RGB values detected by the first sensor and the second sensor so as to approach the RGB values detected by the first sensor.
The range hood according to claim 2 . the light emission control unit calculates color ratio values of at least two colors among the RGB values detected by the first sensor, and calculates the color ratio value of the same color as that detected by the first sensor among the RGB values detected by the second sensor, and controls the illumination color of the illumination unit to approach the RGB values detected by the first sensor by comparing the calculated color ratio values.
The range hood according to claim 4 . A sensor mounting portion for mounting the first sensor is provided on the top surface side of the hood portion.
The range hood according to any one of claims 1 to 5. A sensor mounting portion for mounting the first sensor is provided above the hood portion.
The range hood according to any one of claims 1 to 5. A sensor mounting portion for mounting the first sensor is provided on an outer peripheral side surface of the hood portion.
The range hood according to any one of claims 1 to 5.