JP2008073153A - Storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that, when an in-storage illumination is installed projecting inward a storage, it is difficult for a user to take out stored objects and detach a storage shelf, while an LED has high directivity and its luminous intensity is weaker than a common electric bulb, and a constitution non-obstructing the illumination light is required for efficiently illuminating inside the storage. <P>SOLUTION: At least one or more recessed parts 6 provided at least one or more wall surfaces out of the wall surfaces in a storage chamber 1 are provided with in-storage illuminations 7 using LEDs 8 as light sources, and the respective faces of the recessed part 6 are so constituted as to non-obstruct the illumination light, so that the in-storage illumination 7 is prevented from projecting inward the storage 1 to provide highly visible and efficient illumination non-obstructing the illumination light of LEDs 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a storage provided with an interior lighting for illuminating the storage.

  In recent years, as interior lighting, instead of conventional incandescent lamps and light bulbs, those using semiconductor light-emitting elements have been put on the market for reasons such as low heat generation, no infrared wavelength, and low voltage driving.

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

  FIG. 4 is a perspective view of the interior lighting of the conventional refrigerator ice making chamber described in Patent Document 1, and FIG. 5 is the conventional interior lighting of the refrigerator of FIG. 4 installed on the top surface of the ice making chamber. A schematic diagram is shown.

  In the interior lighting 101 of FIG. 5, the mounting substrate 102 has a flat plate shape, a circuit pattern (not shown) is formed on one surface or both surfaces, and an epoxy resin substrate or an insulating metal substrate with good thermal conductivity is used. . The white LED 103 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 104 for conducting current are derived.

  The heat insulating plate 105 is formed in a flat plate shape using a resin such as urethane, and a plurality of insertion holes are arranged in parallel to be provided between the mounting substrate 102 and the light emitting diode 103. Here, the light-emitting diode 103 is mounted with the current-carrying terminal 104 inserted through the insertion hole of the heat insulating plate 105 and soldered to the circuit pattern of the mounting substrate 102, and a plurality of the light-emitting diodes 103 are juxtaposed on the mounting substrate 102. In addition, when the calorific value of the light emitting diode 103 is small, the heat insulating plate 105 may be eliminated.

  In FIG. 5, the interior lighting 101 is disposed on the top surface 107 inside the ice making chamber 106.

  The operation of the storage that uses the light emitting diode configured as described above as interior lighting will be described below.

First, when the storage door is closed, the light emitting diode 103 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 103, white light is emitted, and the interior is irradiated.
JP 2001-82869 A

  However, in the above-described conventional configuration, if the interior lighting protrudes from the interior of the warehouse, it becomes difficult to take out stored items and remove the storage shelves.

  In addition, since the LED has high directivity and the irradiation light intensity is weaker than that of a general light bulb or the like, a configuration that does not block the irradiation light is necessary to efficiently irradiate the inside of the cabinet efficiently. If there is a shield in the direction of irradiation, a space is generated where the irradiated light is reflected and the light does not reach.

  For example, when the interior lighting is arranged on the ceiling surface of the storage, if there is a storage shelf that divides the interior of the storage, the visibility of the storage items below the storage shelf is the storage shelf itself or It is aggravated by shadows caused by 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.

  The present invention solves the above-described conventional problems, and can efficiently illuminate the interior without projecting the interior lighting into the interior, and can be stored regardless of the vertical position relationship of the stored items in the storage. It aims at providing the storage which has the interior lighting which improves the visibility of an object.

  In order to solve the above-described conventional problems, the storage of the present invention is provided with a substrate on which LEDs are mounted as interior lighting in a recess provided on at least one of the wall surfaces in the storage. Each surface of the LED and the irradiation range defined for the LED are arranged so as not to interfere with each other.

  Thereby, a wide area can be irradiated without the interior lighting projecting into the interior and without blocking the irradiation light of the LED, and efficient irradiation with good visibility becomes possible.

  Moreover, the storage of this invention is set as the position structure which does not inhibit the irradiation light to the standing angle direction specific to each surface of the rising of the recess and the LED.

  By irradiating the inside of the cabinet without blocking the irradiation light in the directivity angle direction determined at a predetermined ratio with respect to the maximum luminous intensity as effective irradiation light, and ignoring the irradiation light above this directivity angle as invalid An efficient configuration can be taken.

  Moreover, the storage of this invention mounts LED on the printed circuit board.

  This eliminates the need for complicated wiring even when a plurality of LEDs are used as the light source, and makes it easy to attach the interior lighting.

  Moreover, the storage of this invention provides the recessed part in the at least 1 or more side wall surface.

  As a result, it is possible to irradiate from the side of the stored item, and compared to the case where a lighting device is provided on the ceiling or back surface, the occurrence of shadows due to the stored item viewed from the user is suppressed, and the stored item is visually recognized. The sex can be greatly improved.

  In the storage of the present invention, each surface of the recess is provided with a predetermined angle on the mounting surface of the interior lighting.

  This makes it possible to freely set the shape of the wall surface and recess for taking a configuration that does not block the irradiation light, and it is easy to configure in consideration of the strength of the wall surface or to prevent the irradiation light from proceeding with other parts. Become.

  The storage of the present invention can suppress the generation of shadows due to the storage, and the lighting in the storage does not protrude into the storage, and further, the efficiency of good visibility without blocking the irradiation light of the LED. Irradiation is possible.

  According to the first aspect of the present invention, interior lighting using an LED as a light source is provided in a recess provided in at least one of the wall surfaces in the storage, and each surface of the recess and the LED are defined. By adopting a position configuration that does not interfere with the irradiated range, it is possible to irradiate a wide area without projecting the interior lighting, and further, without blocking the illumination light of the LED, efficient with good visibility Irradiation is possible.

  According to a second aspect of the present invention, in the configuration according to the first aspect, a position configuration in which irradiation light in a predetermined directivity angle direction determined on each rising surface of the concave portion and the LED is not hindered is maximized. By irradiating the interior of the chamber without blocking the irradiation light in the direction of the directional angle determined at a predetermined ratio with respect to the luminous intensity as the effective irradiating light, and ignoring the irradiating light above this directional angle as invalid, The volume can be minimized and an efficient configuration can be achieved. The rising surface described here is defined as a surface that may block the irradiation light of the LED having an α angle with respect to the concave mounting surface.

  According to a third aspect of the present invention, in the configuration according to the first or second aspect, since the LEDs are mounted on a printed circuit board, they are integrated with the circuit board even when a plurality of LEDs are used as a light source. This eliminates the need for complicated wiring and facilitates installation of interior lighting.

  According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, the concave portion is provided on at least one side wall surface, whereby irradiation can be performed from the side surface of the stored item. Compared with the case where the interior lighting is provided on the ceiling surface or the back surface, the occurrence of shadows of the stored items as seen from the user is suppressed, so that the visibility of the stored items can be significantly improved.

  According to a fifth aspect of the present invention, in the configuration according to any one of the first to fourth aspects, a predetermined angle is provided on each surface of the recess and the mounting surface of the interior lighting. Thus, the shape of the wall surface and the concave portion for taking a configuration that does not block the irradiation light can be freely set, so that the configuration considering the strength of the wall surface and the configuration for avoiding interference with other parts are facilitated.

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

(Embodiment 1)
1 is a longitudinal sectional view of a storage case in Embodiment 1 of the present invention, FIG. 2 is a plan sectional view of a left side wall of the storage case in Embodiment 1 of the present invention, and FIG. 3 is in Embodiment 1 of the present invention. It is a directivity angle characteristic view of LED.

  In FIG. 1 to FIG. 2, the storage room 1 is in the form of a single room of a refrigerator that is insulated from the surroundings by a heat insulating wall 5 in which a heat insulating material 4 is injected between the outer wall 2 and the inner wall 3. The interior lighting 7 is embedded in the recesses 6 provided on the left and right sides of the interior. In this embodiment, it is assumed that the interior lighting 7 is mounted on the printed circuit board 9 using the LED 8 as a light source.

  A plurality of LEDs 8 are arranged in tandem on a vertically long printed circuit board 9 and can uniformly irradiate the storage shelves 10 in the cabinet.

  Also, the interior lighting 7 is installed on the left and right sides of the heat insulating wall 5 on the side close to the door (not shown), and is attached to the recessed portion mounting surface 11 provided with a certain angle toward the interior of the interior. By irradiating the back direction from the side closest to the user as much as possible, the user irradiates the object from the front, so it is easy to identify food etc., and the freshness is easily recognized in the surface state. Compared with the irradiation method from the top and back, it can demonstrate a remarkable lighting effect.

  The interior lighting 7 embedded in the recess 6 is covered with a lamp cover 12. Since the lamp cover 12 can be molded into a free shape by forming one of these materials as a base material among resins such as epoxy, acrylic, polycarbonate, polyethylene, polystyrene, and polypropylene ABS, it is easy. Mounting design becomes possible. The lamp cover 12 diffuses or transmits the irradiation light of the interior lighting 7 into the storage.

  In the above configuration, the interior lighting 7 irradiates the interior of the storage chamber 1. However, in the configuration in which the interior lighting 7 is mounted in the recess 6, the recess upper surface 13 emits irradiation light in the interior upward direction of the recess lower surface 14. Therefore, it is necessary to configure so that the irradiation light in the downward direction in the chamber is not blocked by the concave side surface 15.

  If there is a shield in the irradiation direction, there is a possibility that a space where the irradiation light is reflected and the light does not reach may be generated. As a result, unevenness in the illuminance in the storage chamber 1 occurs, reducing visibility.

  In addition, depending on the configuration of the storage, a restriction may be imposed on the position where the interior lighting 7 is attached. For example, this is a case where other components interfere with the interior lighting 7 and the interior lighting 7 cannot be extended from the upper side to the lower side of the storage chamber 1. At this time, the illuminance above and below the storage chamber 1 becomes relatively low, but it is possible to maintain a certain level of illuminance if there is no shielding object in the irradiation direction as in the present embodiment.

  For this reason, in this Embodiment, the angle of the recessed part attachment surface 11, the recessed part upper surface 13, the recessed part lower surface 14, and the recessed part side surface 15 is set to (alpha), and the structure which does not interfere with the irradiation range 16 is taken. For example, it is obvious that each surface of the recess blocks the irradiation range 16 when α is small in the configuration of FIGS. The angle α may be set to a different angle.

  In addition, when the angle α must be reduced, a configuration in which the irradiation range 16 is not blocked is possible by increasing the distance between the LED 8 mounted at the outermost end of the printed circuit board 9 and each surface of the recess. .

  However, the configuration in which an appropriate angle α is provided as in the present embodiment can increase the filling amount of the heat insulating material 4 by the effective volume 17 and is excellent in heat insulation and strength. In addition, wiring can be passed through the effective volume 17 or other parts can be provided.

  Further, the directivity angle of the LED is shown in the characteristic diagram shown in FIG. 3, and the irradiation angle β is determined so as to cover the entire irradiation range emitted by the LED. For example, as shown in FIG. The directivity angle D that attenuates to 50% may be determined, and the irradiation angle β may be the maximum directivity angle D. Thus, the volume of the recessed part 6 can also be reduced by making the angle (alpha) small etc. by considering the irradiation light outside the directivity angle D as invalid. The position configuration where the irradiation light is not obstructed is basically established under the condition that α ≧ β / 2 satisfies the irradiation light (β) / concave edge clearance γ ≧ 0.

  As described above, in the present embodiment, the interior lighting 7 using the LED 8 as the light source is provided in the recess 6 provided on at least one of the walls in the storage chamber 1, and each of the recesses 5 is provided. Since the surface does not block the irradiation light of the LED 8, the interior lighting 7 does not protrude into the storage chamber 1, and further does not block the irradiation light of the LED 8, so that the visibility is high and efficient. Irradiation is possible.

  In addition, since each surface of the recess 6 is configured not to block the irradiation light in the predetermined directivity angle direction determined by the LED 8, the irradiation light in the directivity angle D direction determined at a predetermined ratio with respect to the maximum luminous intensity. By irradiating the inside of the storage chamber 1 without being blocked as effective irradiation light and ignoring the invalid irradiation light exceeding the directivity angle D, the volume of the recess 6 can be minimized, and an efficient configuration can be achieved. Can take.

  In addition, since the LEDs 8 are mounted on the printed circuit board 9, they are integrated with the printed circuit board 9 even when a plurality of LEDs are used as a light source, so that no complicated wiring is required and the interior lighting 7 can be easily attached. .

  Further, by providing the concave portion 6 on at least one side wall surface 18, it is possible to irradiate from the side surface of the stored item. Compared with the case where the interior lighting 7 is provided on the ceiling surface or the back surface, the user sees it. Since the occurrence of shadows on the stored items is suppressed, the visibility of the stored items can be improved.

  Further, by providing a predetermined angle α on each surface of the rising portion of the recessed portion 6 and the recessed portion mounting surface 11 of the interior lighting 7, the shape of the wall surface and the recessed portion 6 for taking a configuration that does not block the irradiation light can be freely set. Since it can set, the structure which considered the intensity | strength of a wall surface and the structure which avoids inhibiting the progress of the irradiation light in another component become easy.

  As described above, the storage according to the present invention is applied to a wide range of equipment that applies interior lighting, such as electrical appliances equipped with interior lighting, such as a household or commercial refrigerator. It can be done.

The longitudinal cross-sectional view of the storage in Embodiment 1 of this invention Plan sectional drawing of the left side wall of the storage in Embodiment 1 of this invention Directional angle characteristic diagram of LED in Embodiment 1 of the present invention Perspective view of interior lighting of conventional refrigerator ice making room Schematic of conventional refrigerator interior lighting installed on the top of the ice compartment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage room 2 Outer wall 3 Inner wall 4 Heat insulating material 5 Heat insulating wall 6 Recessed part 7 Interior lighting 8 LED
9 Printed circuit board 10 Storage shelf 11 Recess mounting surface 12 Lamp cover 13 Recess upper surface 14 Recess lower surface 15 Recess side surface 16 Irradiation range 17 Effective volume 18 Side wall surface 19 Maximum luminous intensity

Claims (5)

  In a recess provided on at least one of the wall surfaces in the storage, an interior lighting using an LED as a light source is provided, and each rising surface of the recess does not obstruct an irradiation range defined for the LED; Storage that is characterized by that.   The storage according to claim 1, wherein a position configuration in which irradiation light in a predetermined directivity angle direction defined on each surface of the recess and the LED is not obstructed.   The storage case according to claim 1 or 2, wherein the LED is mounted on a printed circuit board.   The storage according to any one of claims 1 to 3, wherein the recess is provided on at least one side wall surface.   The storage according to any one of claims 1 to 4, wherein a predetermined angle is provided on each of the rising surfaces of the recess and the mounting surface of the interior lighting.