JP2012042149A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve visibility at a display part by increasing a quantity of light transmitted to the upper part of a top plate.SOLUTION: A heating cooker includes a top plate 34 which is provided on the upper surface of a case 30 and formed of such material as allows light to transmit with a heated body 32 placed thereon, a heating part 36 which is provided below the top plate 34 to heat the heated body 32, and a display part 42 which is provided below the top plate 34 and includes a light source 38 and a light shielding part 40 having an opening at the upper end and enclosing the light source 38. The top plate 34 includes, on the lower surface, a light shielding layer 44 which reduces transmission rate of visible light. The light shielding layer 44 has a cut-out part 46 where a character, a sign, a pictograph, or a geometric configuration are cut out. The upper end of the display part 42 abuts with the top plate 34 at the periphery of the cut-out part 46, and a diffusion layer 48 is formed on the lower surface of the cut-out part 46. By this configuration, the vlume of light that transmits to the upper part of the top plate is increased for improved visibility from a user.

Description

  The present invention relates to a heating cooker provided with a light source.

  Conventionally, this type of cooking device includes a display unit and a temperature detection unit below the top plate, and the display unit includes a light diffusion sheet at an upper end of the object to be heated according to the temperature detected by the temperature detection unit. By controlling the temperature, the light diffusion sheet is configured to prevent thermal deformation. In some cases, an air layer is provided between the top plate and the display unit to prevent thermal deformation of the light diffusion sheet (see, for example, Patent Document 1).

JP 2004-281343 A JP 2003-086337 A

  However, the conventional configuration has a problem that when the temperature detection unit malfunctions, the light diffusion sheet is thermally deformed, and the visibility of the user is lowered. Further, by providing an air layer between the top plate and the display unit, the light of the display unit diffuses in a substantially planar direction of the top plate through the air layer, compared with the case where there is no air layer. Another problem is that the amount of light transmitted through the top plate is reduced.

  This invention solves the said conventional subject, and it aims at providing the heating cooker which improves a user's visibility by increasing the light quantity which permeate | transmits upwards of a top plate.

  In order to solve the above-described conventional problems, a cooking device of the present invention includes a top plate that is provided on an upper surface of a housing and on which a heated object is placed and is formed of a material that transmits light, and the top plate A heating unit that is provided below and heats the object to be heated; a light source that is provided below the top plate; and a display unit that is provided with a light-shielding unit that has an opening at an upper end and surrounds the light source, The top plate includes a light-shielding layer on a lower surface for reducing visible light transmittance, and the light-shielding layer has a cutout portion formed by cutting out characters, symbols, pictograms or geometric shapes, and has an upper end of the display portion. Is in contact with the top plate around the cutout portion, and a diffusion layer is formed on the lower surface of the cutout portion.

  Thus, by not providing an air layer between the top plate and the display unit, the light of the display unit is prevented from diffusing in the substantially planar direction of the top plate through the air layer, and the air layer Compared with the case where there is, it is possible to increase the amount of light transmitted above the top plate.

  The heating cooker of this invention can improve a user's visibility by increasing the light quantity which permeate | transmits upwards of a top plate.

The top view of the heating cooker in Embodiment 1 of this invention Sectional drawing of the heating cooker in Embodiment 1 of this invention The principal part enlarged plan view which shows the display part vicinity of the heating cooker in Embodiment 1 of this invention The principal part expanded sectional view of the heating cooker in Embodiment 1 of this invention. The principal part expanded sectional view of the display part vicinity of the heating cooker in Embodiment 2 of this invention The principal part enlarged plan view which shows the display part vicinity of the heating cooker in Embodiment 3 of this invention The principal part expanded sectional view of the display part vicinity of the heating cooker in Embodiment 3 of this invention The principal part expanded sectional view of the heating cooker in Embodiment 4 of this invention.

  1st invention is provided in the upper surface of a housing | casing, and the to-be-heated body is mounted, and the top plate formed with the material which permeate | transmits light, and the said to-be-heated body provided below the said top plate is heated. A heating unit; a light source provided below the top plate; and a display unit provided with a light shielding unit having an opening at an upper end and surrounding the light source. The top plate is a light shielding unit that reduces the transmittance of visible light. The light-shielding layer has a cutout portion formed by cutting out characters, symbols, pictograms or geometric shapes, and the upper end of the display portion touches the top plate around the cutout portion. Since the diffusion layer is formed on the lower surface of the cutout portion in contact with the top plate, an air layer is not provided between the top plate and the display portion, and light from the display portion passes through the air layer. It is possible to increase the amount of light transmitted above the top plate compared to the case where there is the air layer, and to improve the visibility of the user. .

  In the second invention, in particular, the top plate of the first invention is provided with a colored layer on the lower surface that makes visible light transmittance in a specific wavelength range larger than transmittance in other wavelength regions, and the colored layer Since the light shielding layer is formed on the lower side, the color of the top plate is not only black, but also has a bright glossy color, thereby improving the design and transmitting the top plate above the top plate. The amount of light can be increased, and the visibility of the user can be improved.

  In the third aspect of the invention, in particular, the display unit of the first or second aspect of the present invention is configured to display the placement unit of the object to be heated provided around the heating unit. It can be easily seen by the user.

  According to a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the infrared sensor is provided below the top plate and measures the bottom surface temperature of the heated object, and based on the detected temperature of the infrared sensor, A control unit that controls the temperature of the object to be heated is provided, and the display unit has a configuration provided on the front side of the heating unit, so that disturbance light to the infrared sensor can be reduced compared to the case where the configuration is not used. It is possible to suppress and improve the accuracy of control.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a plan view of a heating cooker according to the first embodiment of the present invention, FIG. 2 is a sectional view of the heating cooker according to the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. The principal part enlarged plan view which shows the display part vicinity of the heating cooker in the form of FIG. 4, FIG. 4 is the principal part expanded sectional view of the heating cooker in the 1st Embodiment of this invention.

  1, 2, 3, and 4, a top plate 34 that is provided on the upper surface of the housing 30 and on which the heated body 32 is placed and is formed of a material that transmits light, and the top plate 34 A heating unit 36 that is provided below and heats the object to be heated 32, a light source 38 that is provided below the top plate 34, and a display unit 42 that is provided with a light shielding unit 40 that has an opening at the upper end and surrounds the light source 38. The top plate 34 includes a light shielding layer 44 that reduces the transmittance of visible light on the lower surface, and the light shielding layer 44 has a cutout portion 46 formed by cutting out characters, symbols, pictograms, or geometric shapes, The upper end of the display part 42 is in contact with the top plate 34 around the cutout part 46, and a diffusion layer 48 is formed on the lower surface of the cutout part 46.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the light emitted from the light source 38 travels toward the upper top plate 34 directly or while reflecting the inner wall of the light shielding portion 40, and passes through the cutout portion 46 through the diffusion layer 48. Since the light source 38 is shielded from light other than the cutout portion 46, the amount of light transmitted above the top plate 34 can be increased compared to the case where an air layer or a diffusion layer 48 is provided between the light shielding layer 44 and the light shielding portion 40. It becomes possible.

  As described above, in the present embodiment, the upper end of the display unit 42 is in contact with the top plate 34 around the cutout portion 46, and the diffusion layer 48 is formed on the lower surface of the cutout portion 46. The amount of light transmitted through the top plate 34 can be increased, and the visibility of the user can be improved.

  Further, the diffusion layer 48 is formed on the lower surface of the light shielding layer 44 in a solidified state by means such as printing, so that a sheet-like light diffusion plate or light diffusion sheet formed of resin on the diffusion layer 48 is used. Compared to the case, it is possible to prevent a decrease in visibility due to thermal deformation of the diffusion layer 48 when the heated object 32 being heated is placed above the display unit 42.

(Embodiment 2)
FIG. 5: shows the principal part expanded sectional view of the display part vicinity of the heating cooker in the 2nd Embodiment of this invention, and the place different from Embodiment 1 is demonstrated. The same parts as those in the first embodiment are denoted by the same reference numerals.

  In FIG. 5, the top plate 34 is provided with a colored layer 50 that makes visible light transmittance in a specific wavelength region larger than the transmittance in other wavelength regions on the lower surface, and the light shielding layer 44 below the colored layer 50. It is set as the structure which forms.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  With this configuration, the color of the top plate 34 is not only black, but also has a bright glossy color, so that it is possible to improve design and increase the amount of light transmitted above the top plate 34. The visibility of the person can be improved.

(Embodiment 3)
FIG. 6 is an enlarged plan view of the main part showing the vicinity of the display unit of the heating cooker according to the third embodiment of the present invention, and FIG. 7 is the main part near the display unit of the heating cooker according to the third embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view showing a part different from the first embodiment. The same parts as those in the first embodiment are denoted by the same reference numerals.

  6 and 7, the display unit 42 is configured to display the placement unit of the body to be heated 32 provided around the heating unit 36.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  With this configuration, the placement section can be easily seen by the user.

(Embodiment 4)
FIG. 8: shows the principal part expanded sectional view of the heating cooker in the 4th Embodiment of this invention, and demonstrates a different point from Embodiment 1. FIG. The same parts as those in the first embodiment are denoted by the same reference numerals.

  In FIG. 8, the cooking device includes an infrared sensor 52 that is provided below the top plate 34 and measures the bottom surface temperature of the heated object 32, and controls the temperature of the heated object 32 based on the temperature detected by the infrared sensor 52. A control unit 54 is provided, and the display unit 42 is provided on the front side of the heating unit 36.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  With this configuration, it is possible to improve the accuracy of control by suppressing disturbance light incident on the infrared sensor 52 from the display unit 42 and the cutout unit 46 as compared with the case where the above configuration is not employed.

  As described above, the cooking device according to the present invention can improve the visibility and durability of the display unit, and can greatly improve the design and usability. Therefore, the induction heating type having a top plate, It is effective for any combination of single or combined cookers including halogen type, radiant type, and gas type heaters.

DESCRIPTION OF SYMBOLS 30 Case 32 Heated object 34 Top plate 36 Heating part 38 Light source 40 Light-shielding part 42 Display part 44 Light-shielding layer 46 Cutout part 48 Diffusion layer 50 Colored layer 52 Infrared sensor 54 Control part

Claims (4)

A top plate that is provided on the upper surface of the housing and on which a heated body is placed and is formed of a material that transmits light; a heating unit that is provided below the top plate and heats the heated body; and the top A light source provided below the plate and a display part provided with a light shielding part having an opening at the upper end and surrounding the light source, the top plate comprising a light shielding layer on the lower surface for reducing the transmittance of visible light, The light shielding layer has a cutout portion formed by cutting out characters, symbols, pictograms or geometric shapes, the upper end of the display portion is in contact with the top plate around the cutout portion, and the cutout portion A cooking device with a diffusion layer on the bottom. The top plate is provided with a colored layer on a lower surface of which a visible light transmittance in a specific wavelength region is made larger than a transmittance in another wavelength region, and a light shielding layer is formed below the colored layer. The cooking device described. The cooking device according to claim 1, wherein the display unit is provided around the heating unit and displays a placement unit of the object to be heated. An infrared sensor that is provided below the top plate and measures the bottom surface temperature of the heated object, includes a control unit that controls the temperature of the heated object based on the detected temperature of the infrared sensor, and the display unit The cooking device according to any one of claims 1 to 3, provided on the front side.