JP5104387B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator in which a lighting device is installed in a cabinet.

  In recent years, as a lighting device in a refrigerator, a device using a semiconductor issuance element has been proposed for reasons such as low heat generation, no infrared wavelength, low voltage driving, etc., instead of conventional incandescent lamps and light bulbs.

  As a refrigerator using a conventional light-emitting diode as a lighting device, there is a refrigerator in which a plurality of light-emitting diodes are arranged in a square shape and installed on the top surface of the interior to irradiate the interior (for example, see Patent Document 1).

  FIG. 6 is a perspective view of an illumination device for a conventional ice making machine described in Patent Document 1, and FIG. 7 is a conceptual diagram in which the illumination device of FIG. 6 is installed on the top surface of the ice making machine.

  In the lighting device 30 of FIG. 6, the mounting substrate 101 has a flat plate shape, a circuit pattern (not shown) is formed on one surface or both surfaces, and an epoxy resin-based substrate or an insulating metal substrate with good thermal conductivity is used. The white LED 102 is formed in a bullet shape, and has a structure in which white light is obtained by exciting a fluorescent material using blue light from a GaN-based blue LED, and two energization terminals 103 for energizing current are derived.

  The heat insulating plate 104 is formed in a flat plate shape using a resin such as urethane, and is provided between the mounting substrate 101 and the light emitting diode 102 with a plurality of insertion holes arranged in parallel. Here, the light-emitting diodes 102 are mounted with the energization terminals 103 inserted through the insertion holes of the heat insulating plate 104, soldered to the circuit pattern of the mounting substrate 101, and a plurality of the light-emitting diodes 102 are arranged in parallel on the mounting substrate 101. In addition, when the calorific value of the light emitting diode 102 is small, the heat insulating plate 104 may be eliminated.

  In FIG. 7, the lighting device 30 is disposed on the top surface 32 in the warehouse of the ice making machine 31.

  The operation of the refrigerator using the light emitting diode configured as described above as a lighting device will be described below.

First, when the refrigerator door is closed, the light emitting diode 102 is not energized and the interior is not illuminated. When the door is opened, an electronic switch such as a mechanical switch or a Hall IC determines that the door is open, a forward current flows through the light emitting diode 102, white light is emitted, and the interior is irradiated.
JP 2001-82869 A

  However, in the above conventional configuration, when the lighting device is arranged on the ceiling surface in the refrigerator, when there is a storage shelf that divides the interior of the refrigerator in the refrigerator, the visibility of the stored items below the storage shelf is: It is aggravated by shadows caused by the storage shelves themselves or the stored items placed on the storage shelves. In the case of having a plurality of storage shelves as in a general household refrigerator, this becomes more conspicuous as the storage shelves become lower.

  This invention solves the said conventional subject, and provides the refrigerator which has the illuminating device aiming at improving the visibility of preserved matter irrespective of the vertical position relationship of the preserved matter in a refrigerator. Objective.

  In order to solve the above-mentioned conventional problems, the refrigerator of the present invention is a lighting device that irradiates the inside of the refrigerator. A mounting board on which a plurality of light emitting diodes that emit light in the visible light region are mounted is mounted on the side wall surface of the refrigerator. At least one is disposed at an angle with respect to the vertical direction in the refrigerator.

  As a result, the illumination in the refrigerator can be illuminated from the side of the stored item compared to the case where the illumination device is arranged on the ceiling surface, and is arranged at an angle with respect to the vertical direction. Light can be irradiated to the top and bottom.

  Further, the refrigerator of the present invention is a lighting device for irradiating the inside of the refrigerator, wherein a plurality of mounting substrates each mounted with a plurality of light emitting diodes emitting light in the visible light region are connected to at least the side wall surface in the refrigerator. It is arranged on one side, and at least one of the mounting boards is arranged and arranged at an angle with respect to the vertical direction in the refrigerator.

  As a result, the illumination in the refrigerator can be illuminated from the side of the stored item compared to the case where the illumination device is arranged on the ceiling surface, and is arranged at an angle with respect to the vertical direction. Light can be irradiated to the top and bottom.

  The refrigerator of this invention can improve the visibility of the preserve | saved goods of the upper part and lower part of a refrigerator.

According to one aspect of the present invention, as a lighting device for irradiating a plurality of shelves and the refrigerating compartment placing the cold room at the bottom, the mounting substrate and light emitting diodes and a plurality implementation of emission wavelengths in the visible light region those in which a plurality of connection in which is disposed on at least one side wall surface in the cooling chamber, of the mounting substrate, by providing an angle disposed a mounting substrate mounting a small number of light emitting diodes upwards, A mounting substrate having a large number of other light emitting diodes mounted thereon is disposed at an angle downward , and the mounting substrate is disposed at an angle with respect to the vertical direction in the refrigerator. Since light can be irradiated to the upper part and the lower part in the interior, the visibility of the stored items in the upper part and the lower part of the refrigerator can be improved.

Further, the present invention provides a lighting device for illuminating the inside of a refrigerator, wherein a plurality of mounting boards each mounted with a plurality of light emitting diodes emitting wavelengths in the visible light region are connected to at least one of the side wall surfaces in the refrigerator. Since at least one of the mounting boards is provided with an angle in the upward direction, and at least one of the other mounting boards is provided with an angle in the downward direction. Moreover, since light can be irradiated to the upper part and the lower part in a refrigerator, the visibility of the preservation | save thing of the upper part and the lower part of a refrigerator can be improved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to FIGS. 1 is a front view of a state in which a refrigerator door according to Embodiment 1 of the present invention is opened, FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1 in the same embodiment, and FIG. FIG. 4 is a vertical cross-sectional view of the main part of the illumination device according to the embodiment, and FIG. 5 is a horizontal cross-sectional view of the main part of the illumination device according to the embodiment.

  In FIG. 1 and FIG. 2, the refrigerator main body 10 configured to be insulated from the surroundings with a heat insulating material is divided into a plurality of compartments to form a storage room, and the uppermost part is a refrigerator compartment 11, The ice making room 12 and the first freezing room 13 are arranged side by side immediately below, followed by the vegetable room 15 and the second freezing room 14 at the bottom.

  The refrigerator compartment 11 is provided with a plurality of storage shelves 17 for organizing and storing stored items without overlapping, and is arranged at arbitrary intervals set so that stored items can be stored efficiently. A specific low temperature chamber 16 is provided at the lowest level.

  The illuminating device 20 is vertically arranged on the left wall surface and the right wall surface in front of half of the depth dimension of the interior 11 (before the front end of the storage shelf 17) as viewed from the front side of the door in the refrigerator. It is installed. In the lighting device 20, the first mounting substrate 1 a and the second mounting substrate 1 b are connected by the substrate connecting portion 21.

  FIG. 3 is a graph showing the directivity regarding the light irradiation direction of the light emitting diode 2. Assuming that the irradiation direction is the vertical direction, the irradiation range is within a line. For example, at an irradiation amount of 1/2, the irradiation angle is 30 ° on each of the left and right sides as in D.

  In FIG. 4, the illumination device 20 will be described in detail.

  The mounting substrate 1a and the mounting substrate 1b are flat and circuit patterns (not shown) are formed on one or both surfaces, and an epoxy resin substrate or an insulating metal substrate having good thermal conductivity is used. The light-emitting diode 2 is formed in a bullet shape, and has a structure in which white light is obtained by exciting a fluorescent material using blue light from a GaN-based blue LED. The heat insulating plate 4 is formed in a flat plate shape using a resin such as urethane, and a plurality of insertion holes are provided in parallel, and is provided between the mounting substrate 1 a and the mounting substrate 1 b and the light emitting diode 2. Here, the light emitting diode 2 is mounted with the energization terminal 3 inserted through the insertion hole of the heat insulating plate 4 and soldered to the circuit pattern of the mounting substrate 1a and the mounting substrate 1b. It is arranged in parallel with the substrate 1b. In addition, when the emitted-heat amount of the light emitting diode 2 is small, you may abolish the heat insulation board 4. FIG. The board connecting portion 21 is constituted by a lead wire 24, and one side of the lead wire 24 is soldered to the mounting board 1a and the other side is soldered to the mounting board 1b. In addition, the board | substrate connection part 21 may be comprised with the connector which uses resin.

  Next, the mounting substrate 1a and the mounting substrate 1b on which the plurality of light emitting diodes 2 are mounted in the vertical direction are held by the spacer 6 integrally formed with the outer frame 9 in the recess 5 provided in the refrigerator side wall 8. . The spacers 6 are assumed to have different lengths at the top and bottom of the substrate, the mounting substrate 1a is disposed at an angle downward by an angle A, and the mounting substrate 1b is disposed at an angle upward by an angle B. ing. The angle A and the angle B are arbitrary values set so that the interior can be illuminated uniformly in the vertical direction due to the directivity of the light-emitting diode 2, and the volume in the refrigerator, the arrangement position of the lighting device 20, and use The light emitting diode 2 is determined. The lamp cover 7 is arranged as a lighting device 20 on the left and right wall surfaces in the refrigerator compartment so as to cover the entire light emitting part of the light emitting diode 2 at a certain distance from the light emitting part of the light emitting diode 2.

  In FIG. 5, the mounting substrate 1 and the light emitting diode 2 which is a white LED are held by the spacer 6 at an angle C with respect to the inner wall surface 16 of the interior 11, and this angle C is the directivity of the light emitting diode 2. It is an arbitrary value set so that the interior can be illuminated evenly, and is determined by the volume in the refrigerator compartment and the light emitting diode used, but the light is distributed in the rear direction of the interior where the light is hard to reach Is set to The angle C is preferably between 30 ° and 60 °. In particular, when a bullet-type light emitting diode is used, the angle is around 30 °.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the refrigerator door is closed, the light emitting diode 2 is not energized and the interior is not illuminated. When the door is opened, a forward current flows through the light emitting diode 2 and white light is emitted. Up to this point, the operation is the same as that of the conventional example.

  Next, the white light emitted from the light emitting diode 2 travels to the lamp cover 7 and is irradiated into the interior. From the front side of the left and right wall surfaces in the refrigerator, the white light emphasized with respect to the back direction of the interior is distributed to the front and side surfaces of the stored items by the irradiation angle set by the directivity of the light emitting diode, White light emphasized with respect to the direction is distributed to the front and side surfaces of the preservation.

  As described above, in the present embodiment, the mounting substrate 1a and the mounting substrate 1b are disposed at an angle A and an angle B in the lighting device, so that light from the light emitting diode 2 can be emitted in a wider range. Since it irradiates, it can implement | achieve the illuminating device which irradiates a wide range especially to an up-down direction, and can improve the visibility of preserved matter irrespective of the magnitude | size of a refrigerator.

  As described above, the refrigerator according to the present invention is not only implemented when light-emitting diode illumination is applied to household or commercial refrigerators, but also a wide range of equipment that applies light-emitting diode illumination, such as an article storage device with a door. It can be applied to.

The front view of the state which opened the door of the refrigerator in Embodiment 1 of this invention BB sectional view of FIG. 1 in the same embodiment Directional characteristic diagram of light-emitting diode in the same embodiment The principal part longitudinal cross-sectional view of the illuminating device in the embodiment The principal part cross-sectional view of the illuminating device in the embodiment A perspective view of a conventional ice making machine lighting device Conceptual diagram of the lighting device of FIG. 6 installed on the top of the ice machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting board 1a 1st mounting board 1b 2nd mounting board 2 Light emitting diode 8 Refrigerator side wall 10 Refrigerator main body 20 Illuminating device A angle B angle C angle

Claims (1)

A lighting device for irradiating a plurality of shelves and the refrigerating compartment placing the cold room at the bottom, the cooling chamber a material obtained by connecting a plurality of mounting board in which a plurality mounting the light emitting diode that emits a wavelength of visible light region Among the mounting substrates, a mounting substrate with a small number of mounted light emitting diodes is disposed at an angle upward, and the number of other light emitting diodes mounted is large. A refrigerator characterized in that a mounting substrate is disposed at an angle downward .