Lighting power supply device and display cabinet

Abstract

Provided are a lighting power supply device and a display cabinet. The purpose of the present disclosure is to provide a power supply device for illumination and a showcase capable of simplifying the structure of the showcase. A lighting power supply device according to the present disclosure is a lighting power supply device for supplying power to lighting provided in a showcase, and is integrally provided with: a power supply input unit for receiving the supply of power; and an external power supply output unit for supplying power to the external illumination of the showcase on the basis of the power input to the power supply input unit, and an internal power supply output unit for supplying power to the internal illumination of the showcase on the basis of the power input to the power supply input unit.

Description

Technical Field

[0001] The present disclosure relates to a lighting power supply device and a display cabinet. Background Art

[0002] Patent document 1 discloses an open showcase having a top cover extending forward mounted on the upper edge of the front opening, and a lighting device for the top cover mounted on the lower side of the top cover. The open showcase illuminates commodities placed on the shelf by means of the lighting device mounted on the shelf and the top cover.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2010-172531 Summary of the invention

[0004] An object of the present disclosure is to provide a lighting power supply device and a showcase capable of simplifying the structure of the showcase.

[0005] The lighting power supply device disclosed in the present invention supplies electric power to lighting arranged in a display case, wherein the lighting power supply device integrally comprises: a power input unit that receives the supply of electric power; and an external power output unit and an internal power output unit, wherein the external power output unit supplies electric power to the external lighting of the display case based on the electric power input to the power input unit, and the internal power output unit supplies electric power to the internal lighting of the display case based on the electric power input to the power input unit.

[0006] The display cabinet disclosed in the present invention has a plurality of the above-mentioned power supply devices for lighting, and the display cabinet is divided into a specified number of lighting areas in the width direction, and the outside-warehouse lighting and the inside-warehouse lighting are respectively arranged in each of the lighting areas, and the outside-warehouse lighting and the inside-warehouse lighting arranged in each of the lighting areas are respectively connected to one of the power supply devices for lighting.

[0007] According to the lighting power supply device and the showcase of the present disclosure, the lighting power supply device that supplies power to the lighting outside the warehouse and the lighting inside the warehouse can be integrated into one, thereby simplifying the structure of the showcase. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a cross-sectional view of the showcase according to the first embodiment.

[0009] Figure 2 This is the front view of the display case.

[0010] Figure 3 It is a diagram showing the structure of the operation display unit.

[0011] Figure 4 It is a block diagram of the display cabinet.

[0012] Figure 5It is a diagram showing the structure of a lighting power supply device.

[0013] Figure 6 It is an explanatory diagram showing the transition of the lighting state of each lighting.

[0014] Figure 7 This is a diagram showing the structure of a lighting power supply device according to a second embodiment.

[0015] Figure 8 It is an explanatory diagram showing the transition of the lighting state of each lighting according to the second embodiment.

[0016] Fig. 9 This is a diagram showing the structure of a lighting power supply device according to a third embodiment.

[0017] Fig.10 It is an explanatory diagram showing the transition of the lighting state of each lighting according to the third embodiment.

[0018] Description of symbols

[0019] 1 Display cabinet

[0020] 11 Shell

[0021] 12Showroom

[0022] 13 bottom wall

[0023] 14 Sidewall

[0024] 15 Back wall

[0025] 16 on the wall

[0026] 16a Front end

[0027] 17 Lower front wall

[0028] 18 base

[0029] 20 Inner wall

[0030] 22 partition wall

[0031] 24Inner upper wall

[0032] 26. Deck pan

[0033] 28 display racks

[0034] 30 pipes

[0035] 31Cooling system

[0036] 31a Evaporator

[0037] 31b Heater

[0038] 32 Lower pipe

[0039] 33 Blower

[0040] 33a motor

[0041] 33b impeller

[0042] 34 back pipe

[0043] 36 Upper pipe

[0044] 37 Blowing outlet

[0045] 38 suction port

[0046] 39 Top cover

[0047] 39a first convex part

[0048] 39a1 front surface

[0049] 39b second convex part

[0050] 39b1 lower surface

[0051] 40 Operation display unit

[0052] 40a Panel

[0053] 41 Temperature display unit

[0054] 41a Numerical display unit

[0055] 41b Unit display

[0056] 45 Operation Department

[0057] 45a First button (lighting switch)

[0058] 45a1 First Mark

[0059] 45b Second button

[0060] 45b1 Second Mark

[0061] 45c Third button

[0062] 45d Fourth button

[0063] 50, 50A, 50 lighting power supply device

[0064] 51, 51A, 51B warehouse external lighting

[0065] 52 Power input

[0066] 52a Internal and external power input

[0067] 53, 53A, 53B upper wall lighting in the warehouse (inside lighting)

[0068] 54 signal input unit

[0069] 55, 55A, 55B warehouse under-rack lighting (warehouse lighting)

[0070] 56 External power supply output

[0071] 57 Internal power output

[0072] 58 power supply circuit

[0073] 59 dimming circuit

[0074] 61 Input power line

[0075] 63 Power cord

[0076] 65 power cord

[0077] 66 Power Cord

[0078] 67 Warehouse external power line

[0079] 68 Power cord inside the warehouse

[0080] 71 Input side signal line

[0081] 73 signal line

[0082] 90 Control Device

[0083] 92 Relay (first switch, second switch)

[0084] 93 Temperature Sensor

[0085] 99 Power

[0086] 150 Lighting power supply device

[0087] 159 Circuit

[0088] 250 Lighting power supply device

[0089] 252 power input

[0090] 252a External power input

[0091] 252b Internal power input

[0092] 290 Control Device

[0093] A Lighting Area

[0094] B Lighting Area DETAILED DESCRIPTION

[0095] (Insights, etc. that form the basis of this disclosure)

[0096] When the inventors came up with the present disclosure, in the technology of display cabinets, there were usually lighting inside the warehouse and lighting outside the warehouse. Therefore, in this field, the following design was made: one lighting power supply device supplies power to all lighting outside the warehouse, and other lighting power supply devices are arranged in proportion to the number of lighting inside the warehouse arranged in the width direction to supply power to the lighting inside the warehouse. Under such circumstances, the inventors found that there was a problem that the structure of the display cabinet was easily complicated in the previous design, and in order to solve this problem, the subject of the present disclosure was formed.

[0097] Therefore, the present disclosure provides a lighting power supply device and a showcase capable of simplifying the structure of the showcase.

[0098] Hereinafter, the embodiments are described in detail with reference to the accompanying drawings. However, sometimes, a detailed description beyond what is necessary is omitted. For example, sometimes, a detailed description of a known matter or a repeated description of a substantially identical structure is omitted. This is to avoid the following description being too lengthy and to make it easy for those skilled in the art to understand.

[0099] In addition, the drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0100] (Implementation Method 1)

[0101] Below, use Figures 1 to 10 Implementation method 1 will be described.

[0102] [1-1. Structure]

[0103] [1-1-1. Overall structure of the display cabinet]

[0104] Figure 1 It is a cross-sectional view of the showcase 1 , and shows a cross section perpendicular to the width direction of the showcase 1 . Figure 2 It is a front view of the showcase 1 of this embodiment.

[0105] The showcase 1 is placed on the floor of a supermarket, convenience store, or the like, and displays beverages, foods, and other commodities in a refrigerated state. The showcase 1 is a so-called open showcase.

[0106] The showcase 1 has a substantially box-shaped housing 11 with an open front surface for taking out and putting in commodities. Hereinafter, the opening direction of the housing 11 in the horizontal direction is referred to as the front, and the direction orthogonal to the front-rear direction in the horizontal direction is referred to as the width direction or the left-right direction.

[0107] The showcase 1 has a base portion 18 that supports a housing 11. Inside the housing 11, a display room 12 is provided as a space for displaying commodities.

[0108] The housing 11 has a bottom wall 13 that covers the display chamber 12 from below. The housing 11 has a pair of side walls 14 that stand on the left and right side edges of the bottom wall 13 and cover the display chamber 12 from the left and right directions. The housing 11 has a rear wall 15 that is mounted between the pair of left and right side walls 14 and covers the display chamber 12 from the rear. The housing 11 has an upper wall 16 that is mounted between the side walls 14 and the rear wall 15 and covers the display chamber 12 from above. A lower front wall 17 is formed on the bottom wall 13, and the lower front wall 17 is formed by bending and extending the front part of the bottom wall 13 upward. The bottom wall 13, the side walls 14, the lower front wall 17, the rear wall 15, and the upper wall 16 are all heat-insulating walls.

[0109] A base portion 18 is provided on the lower surface of the bottom wall 13 to be placed on the floor, which is the placement surface of the showcase 1. The base portion 18 supports the housing 11 via the upper surface.

[0110] An inner wall 20 is provided inside the housing 11, which is separated from the inner surface of the housing 11 and covers the housing 11 from the inside. The inner wall 20 has a partition wall 22 extending in the up-down direction in front of the rear wall 15. The inner wall 20 has an inner upper wall 24 extending forward from the upper end of the partition wall 22 along the upper wall 16. The inner wall 20 has a bottom plate 26 extending forward substantially horizontally from the lower end of the partition wall 22 and connected to the upper part of the lower front wall 17.

[0111] The display room 12 is formed by being partitioned by the inner wall 20 and the side walls 14. For example, the partition wall 22 functions as a back panel constituting the back side of the display room 12.

[0112] A plurality of display racks 28 for placing and displaying commodities on the upper surface are provided inside the display room 12. The display racks 28 are arranged in the vertical direction, attached to the partition wall 22 at intervals from each other, and extend substantially horizontally toward the front.

[0113] In the present embodiment, the bottom plate 26 is configured to be able to display goods, and the bottom plate 26 functions as a display shelf at the bottom. The front end of the bottom plate 26 is located in front of the front end of each display shelf 28. In addition, in the present embodiment, four display shelves 28 are arranged in a vertical arrangement, but the number of display shelves 28 may be any number of one or more. In addition, a structure in which no display shelf 28 is provided is also possible.

[0114] A duct 30 is formed between the inner wall 20 and the housing 11. The duct 30 is a space surrounded by the inner wall 20, the bottom wall 13, the side walls 14, the lower front wall 17, the rear wall 15, and the upper wall 16.

[0115] The duct 30 includes a lower duct 32 formed between the bottom plate 26 and the bottom wall 13 and extending in the front-rear direction. The duct 30 includes a back duct 34 formed between the partition wall 22 and the rear wall 15 and extending in the up-down direction. The duct 30 includes an upper duct 36 formed between the inner upper wall 24 and the upper wall 16 and extending in the front-rear direction. The display room 12 is surrounded by the lower duct 32, the back duct 34, and the upper duct 36.

[0116] The top duct 36 has a blowout port 37 at its front end. The blowout port 37 is opened downward and communicates with the display room 12. The blowout port 37 is provided below the front end of the top wall 16 and above the front side of the display room 12.

[0117] A suction port 38 is provided at the upper portion of the front end of the lower duct 32. The suction port 38 is an opening that opens upward and communicates with the display chamber 12. The suction port 38 is provided at the lower front portion of the display chamber 12 continuously with the rear portion of the lower front wall 17. The suction port 38 is located at a position forward of the blowout port 37. The blowout port 37 and the suction port 38 extend elongatedly between the side walls 14 over the substantially entire width direction of the housing 11.

[0118] The showcase 1 has a cooling system 31 for cooling the display chamber 12 (see Figure 4 ). The cooling system is a refrigeration cycle formed by connecting a compressor for compressing a refrigerant, an evaporator 31a, a condenser, and an expansion mechanism in a ring shape by using pipes, and a refrigerant is sealed in the cooling system.

[0119] In the present embodiment, the evaporator 31a is disposed inside the duct 30 provided in the housing 11, and the compressor, condenser, and expansion mechanism are housed in an outdoor unit separate from the showcase 1. In addition, the compressor, condenser, and expansion mechanism may be housed inside the base 18, for example, and may be integrally provided in the showcase 1.

[0120] The blower 33 is provided inside the duct 30. The blower 33 includes a motor 33a and an impeller 33b attached to the output shaft of the motor 33a. The blower 33 rotates the impeller 33b by the motor 33a, thereby circulating the air (cool air) cooled by the evaporator 31a by blowing air.

[0121] A top cover 39 is mounted on the front end portion 16a of the upper wall 16 of the housing 11. The top cover 39 is provided over substantially the entire front end portion 16a in the width direction. A first convex portion 39a is formed on the top cover 39, and the first convex portion 39a protrudes downward near the front end portion 16a of the upper wall 16 and extends to a position below the front end portion 16a. A front surface 39a1 of the first convex portion 39a is inclined in a direction toward the rear side from the lower side. In the top cover 39, a second convex portion 39b is formed at a position above the upper wall 16, and the second convex portion 39b extends to a position forward of the front end portion 16a and the first convex portion 39a. A lower surface 39b1 of the front end portion of the second convex portion 39b is inclined in a direction located forward and downward.

[0122] An operation display unit 40 is provided on the front surface of the first convex portion 39a. The operation display unit 40 is located in front of the air outlet 37. The operation display unit 40 displays information such as the internal temperature of the showcase 1. In addition, the operation display unit 40 receives operations from the user.

[0123] A lighting power supply device 50 is provided inside the second convex portion 39b. The lighting power supply device 50 supplies power to each lighting of the showcase 1.

[0124] [1-1-2. Lighting configuration]

[0125] The display cabinet 1 is divided into an interior for storing commodities and an exterior as the exterior thereof. The interior includes a display room 12, for example, an area where airflow supplied by a blower 33 circulates. The exterior is a part of the structure of the display cabinet 1 that is not included in the interior. The interior and exterior are, for example, Figure 1 As shown by the dotted line 11a, it is divided by the surface connecting the lower end of the top cover 39 and the upper end of the lower front wall 17. In addition, the dotted line 11a connects the blow-out port 37 and the suction port 38. Therefore, the inside of the display room 12 and the outside of the display room 12 can also be divided by the flow of air blown out from the blow-out port 37 and sucked into the surface of the suction port 38 that expands in the width direction.

[0126] The display cabinet 1 has an internal lighting 53 arranged in the warehouse (a collective term for the internal lighting 53A on the left and the internal lighting 53B on the right, the same below), an internal lighting 55 (a collective term for the internal lighting 55A on the left and the internal lighting 55B on the right, the same below), and an external lighting 51 arranged outside the warehouse (a collective term for the external lighting 51A on the left and the external lighting 51B on the right, the same below). There is no limitation on the ranges illuminated by the external lighting 51 and the internal lighting 53 and 55. For example, the illumination range of the external lighting 51 may also include the interior of the warehouse.

[0127] The external lighting 51 is located outside the display room 12, for example, mounted on the lower surface 39b1 of the front end of the second protrusion 39b in the top cover 39. In the present embodiment, the external lighting 51 is composed of an LED (Light Emitting Diode). The external lighting 51 emits light toward the rear and downward. The external lighting 51 illuminates the inside of the display room 12.

[0128] The lighting inside the warehouse includes the upper wall lighting 53 inside the warehouse and the under-shelf lighting 55 inside the warehouse.

[0129] The interior upper wall lighting 53 is a lighting device located on the inner side of the display room 12. The interior upper wall lighting 53 is installed on the inner upper wall 24 of the inner wall 20. In the present embodiment, the interior upper wall lighting 53 is composed of LEDs. The interior upper wall lighting 53 emits light downward. The interior upper wall lighting 53 illuminates the inner side of the display room 12. In the present embodiment, the interior upper wall lighting 53 is an example of "interior lighting".

[0130] The in-warehouse under-shelf lighting 55 is a lighting device located on the inner side of the display room 12. The in-warehouse under-shelf lighting 55 is installed on the front of each display shelf 28. The in-warehouse under-shelf lighting 55 is installed on the lower surface of each display shelf 28. The in-warehouse under-shelf lighting 55 is, for example, a lighting device such as an LED, a fluorescent lamp, or an incandescent lamp. The in-warehouse under-shelf lighting 55 emits light downward and backward. The in-warehouse under-shelf lighting 55 illuminates the inner side of the display room 12. In the present embodiment, the in-warehouse under-shelf lighting 55 is an example of "in-warehouse lighting".

[0131] The external lighting 51 is located in front of the front end of each display rack 28 arranged vertically. In addition, the external lighting 51 is located above the display rack 28 on the uppermost layer. Therefore, the external lighting 51 and the front of each display rack 28 and the front of the bottom plate 26 are not blocked by other display racks 28. Therefore, the external lighting 51 illuminates the upper surface of each display rack 28 and the bottom plate 26. In addition, the external lighting 51 illuminates the commodities displayed on each display rack 28 and the bottom plate 26.

[0132] In the present embodiment, the external lighting 51 is located in front of the front ends of the display shelves 28 and the front end of the bottom tray 26 .

[0133] The upper wall lighting 53 in the warehouse is located at a position behind the front end of the display shelf 28 at the top layer. In addition, the upper wall lighting 53 in the warehouse is located above the display shelf 28 at the top layer. Therefore, the upper wall lighting 53 in the warehouse and the display shelf 28 below the top layer are blocked by the display shelf 28 at the top layer. Therefore, the upper wall lighting 53 in the warehouse mainly illuminates the upper surface of the display shelf 28 at the top layer. In addition, the upper wall lighting 53 in the warehouse mainly illuminates the commodities displayed on the display shelf 28 at the top layer.

[0134] Each in-warehouse under-shelf lighting 55 is located at a position behind the front end of the display shelf 28 at the lower level than the display shelf 28 on which the in-warehouse under-shelf lighting 55 is installed. Therefore, each in-warehouse under-shelf lighting 55 and each display shelf 28 at least two levels lower than the display shelf 28 on which the in-warehouse under-shelf lighting 55 is installed are blocked by the display shelf 28 at a level lower than the display shelf 28 on which the in-warehouse under-shelf lighting 55 is installed. Therefore, the in-warehouse under-shelf lighting 55 mainly illuminates the upper surface of the display shelf 28 at the lower level than the display shelf 28 on which the in-warehouse under-shelf lighting 55 is installed. In addition, the in-warehouse under-shelf lighting 55 mainly illuminates the commodities displayed on the display shelf 28 at the lower level than the display shelf 28 on which the in-warehouse under-shelf lighting 55 is installed.

[0135] like Figure 2 As shown, in this embodiment, the showcase 1 is provided with two external lightings 51 arranged in the width direction. The showcase 1 is provided with two internal upper wall lightings 53 arranged in the width direction. The showcase 1 is provided with internal shelf lightings 55 arranged in four layers in the width direction, two each. In this embodiment, the positions of the external lighting 51A on the left side, the internal upper wall lighting 53A on the left side, and the internal shelf lightings 55A on the four layers on the left side in the width direction are the same. In this embodiment, the positions of the external lighting 51B on the right side, the internal upper wall lighting 53B on the right side, and the internal shelf lightings 55B on the four layers on the right side in the width direction are the same. In addition, in the width direction, the positions occupied by the lightings 51A, 53A, 55A on the left side do not overlap with the positions occupied by the lightings 51B, 53B, 55B on the right side. Therefore, the showcase 1 is divided into a predetermined number of lighting areas in the width direction, and the external lightings 51 and the internal lightings 53, 55 are respectively arranged in the predetermined number of lighting areas divided in the width direction. In this embodiment, the number of divisions of the lighting area of ​​the showcase 1 is two, which are divided into two: a left lighting area A and a right lighting area B. In addition, the left lighting area A is provided with an external lighting 51A, an internal upper wall lighting 53A, and an internal shelf lighting 55A, and the right lighting area B is provided with an external lighting 51B, an internal upper wall lighting 53B, and an internal shelf lighting 55B.

[0136] In the present embodiment, the showcase 1 is provided with two lighting power supply devices 50A and 50B arranged in the width direction. Moreover, the lighting power supply devices 50A and 50B are arranged inside the top cover 39 located at the upper part of the showcase 1. The lighting power supply devices 50A and 50B preferably have a common circuit design, and the circuit substrate, the frame and the like are also the same components. In the width direction, the entire position occupied by the lighting power supply device 50A on the left overlaps with the positions occupied by the lightings 51A, 53A, and 55A on the left. In addition, in the width direction, the entire position occupied by the lighting power supply device 50B on the right overlaps with the positions occupied by the lightings 51B, 53B, and 55B on the right. In addition, the lighting power supply device 50A on the left is connected to the lightings 51A, 53A, and 55A on the left, respectively. The lighting power supply device 50B on the right is connected to the lightings 51B, 53B, and 55B on the right, respectively. That is, in the width direction, the entirety of each position occupied by each lighting power supply device 50A, 50B overlaps with the positions occupied by each lighting 51A, 51B, 53A, 53B, 55A, 55B connected thereto. In other words, lighting power supply devices 50 are respectively arranged in each of the predetermined number of lighting areas divided in the width direction, and each lighting (external lighting 51 and internal lighting 53, 55) arranged in each lighting area is connected to one lighting power supply device 50 (one of the plurality of lighting power supply devices 50). Each lighting power supply device 50 is arranged in the lighting area where the connected external lighting 51 and internal lighting 53, 55 are arranged. Therefore, one lighting power supply device 50 that supplies power to lighting 51, 53, 55 located in a certain lighting area is configured so as not to supply power to lighting 51, 53, 55 located in other lighting areas.

[0137] By the above structure, the length of the connection wiring from each lighting power supply device 50A, 50B to each lighting 51A, 51B, 53A, 53B, 55A, 55B is optimized in a manner as short as possible, and the heat dissipation from each lighting power supply device 50A, 50B is appropriately performed. Therefore, the power loss in each lighting power supply device 50A, 50B can be suppressed. In addition, by arranging each lighting power supply device 50A, 50B at a position higher than the storage of the showcase 1, the influence of drainage leakage from the storage on each lighting power supply device 50A, 50B can be avoided, and the influence of condensation water can be reduced. Therefore, malfunction, failure, and damage of each lighting power supply device 50A, 50B are suppressed.

[0138] In addition, the positions where the lighting power supply devices 50A and 50B are arranged are not limited to the lighting areas divided into a predetermined number in the width direction. In addition, the positions where the lighting power supply devices 50 are arranged are not limited to the top cover 39 and the upper part of the showcase 1. The lighting power supply devices 50 may be arranged on the back, side, or bottom of the showcase 1, or all the lighting power supply devices 50 may be arranged at any one place. Furthermore, when there are three or more lighting power supply devices 50, some of them may be arranged at any one place.

[0139] The number of divisions of the lighting area in the width direction of the showcase 1 is determined by the power capacity that can be supplied by the lighting power supply device 50 used, the power consumption of the external lighting 51 and the internal lighting 53, 55 to which each lighting power supply device 50 is responsible for supplying power, and the length (dimension) of the width direction of the showcase 1. In the present embodiment, the case where the number of divisions of the lighting area is two is described, but the number of divisions of the lighting area is not limited to two. The showcase usually has a plurality of specifications (line nap) of different widths according to the needs of the customer, that is, the size of the customer's store, and the predetermined location. Depending on the situation, a showcase with a customized width that is not included in the pre-existing specifications is sometimes manufactured. According to the present embodiment, power can be supplied to each lighting 51, 53, 55 of the showcase 1 having various width lengths (dimensions) by increasing or decreasing the number of lighting power supply devices 50. Therefore, for display cabinets of any width, there is no need to separately set up power supplies for the external lighting 51 and the internal lighting 53, 55, nor is there any need to prepare multiple lighting power supply devices 50 with different designs (especially circuit designs). Lighting control can be performed by a lighting power supply device 50 set according to the specified width, so that lighting control of the external lighting 51 and the internal lighting 53, 55 can be performed while reducing the new design part of the circuit and design changes.

[0140] [1-1-3. Configuration of the operation display unit]

[0141] Figure 3 1 is a diagram showing the configuration of the operation display unit 40 , and shows the operation display unit 40 in a state where the temperature display unit 41 is lit.

[0142] The operation display unit 40 has a substantially rectangular panel 40a that is long in the left-right direction. The operation display unit 40 has a temperature display unit 41. The temperature display unit 41 is provided on the inner side of the panel 40a. The temperature display unit 41 mainly displays the temperature of the display room 12. In the present embodiment, the temperature display unit 41 has a numerical display unit 41a formed by arranging four 7-segment LEDs on the left and right. In addition, the temperature display unit 41 has a unit display unit 41b, which is lit by the light emission of an LED provided on the back side of the panel 40a, and displays the unit of the numerical value shown in the numerical display unit 41a. In the present embodiment, the unit display unit 41b displays "°C" indicating degrees Celsius.

[0143] The operation display unit 40 includes an operation unit 45. The operation unit 45 is provided on the inner side of the panel 40a. The operation unit 45 receives the user's operation. In the present embodiment, the operation unit 45 includes a first button 45a, a second button 45b, a third button 45c, and a fourth button 45d. The buttons 45a, 45b, 45c, and 45d are arranged side by side. In the present embodiment, the buttons 45a, 45b, 45c, and 45d are so-called momentary push switches. In the present embodiment, the first button 45a corresponds to a "lighting switch".

[0144] The first button 45a is located at the left end of the operation unit 45. The first button 45a is printed with the word "lighting". The second button 45b is located on the right side of the first button 45a. The second button 45b is printed with the word "display switching". The third button 45c is located on the right side of the second button 45b. The third button 45c is printed with the word "setting". The fourth button 45d is located on the right side of the third button 45c. The fourth button 45d is printed with the word "operation switching".

[0145] In the panel 40a, a first mark 45a1 indicating the downward direction is marked above the first button 45a. A second mark 45b1 indicating the upward direction is marked above the second button 45b. In the present embodiment, the first mark 45a1 is an isosceles triangle with its vertex facing downward. The second mark 45b1 is an isosceles triangle with its vertex facing upward.

[0146] The temperature display unit 41 is located at the left end of the panel 40 a , and the operation unit 45 is located at the right side of the temperature display unit 41 .

[0147] [1-1-4. Structure of control system]

[0148] Figure 4 1 is a block diagram of a showcase 1, and shows the structure of a control system of the showcase 1. The showcase 1 has a control device 90. The control device 90 controls the operation of each device provided in the showcase 1. The control device 90 is connected to a power source 99. The power source 99 is, for example, a commercial AC power source.

[0149] The control device 90 has a processor. The processor is composed of a CPU (Central Processing Unit), an MPU (Micro-Processing Unit), a microcontroller or other computing processing devices. The control device 90 has the above-mentioned processor, ROM (Read Only Memory), and RAM (Random Access Memory), and controls the display cabinet 1 by executing a program by the processor. The control device 90 may also have a memory not shown in the figure. The memory is a storage device that stores programs and data executed by the processor in a non-volatile manner. The memory is composed of a magnetic storage device, a semiconductor storage element, or other types of non-volatile storage devices. Specifically, the memory is composed of an HDD (Hard Disk Drive), a flash ROM (Read Only Memory), an SSD (Solid State Drive), etc.

[0150] The cooling system 31, the heater 31b, and the motor 33a are connected to the control device 90 as control objects. The control device 90 controls the cooling system 31 and the motor 33a to control the temperature of the display room 12. The heater 31b is provided near the evaporator 31a. The control device 90 controls the heater 31b to defrost the evaporator 31a.

[0151] The control device 90 is connected to a temperature sensor 93. The temperature sensor 93 is a sensor for measuring the temperature of the display room 12. The temperature sensor 93 is provided, for example, near the air outlet 37 or the air inlet 38. The control device 90 acquires the temperature measured by the temperature sensor 93.

[0152] The control device 90 is connected to the operation display unit 40. The control device 90 controls the display of the temperature display unit 41. The control device 90 obtains the operation performed on the operation unit 45.

[0153] The lighting power supply device 50 is connected to the control device 90. The control device 90 supplies power to the lighting power supply device 50. The lighting power supply device 50 has a power supply circuit that converts the power supplied from the control device 90. The lighting power supply device 50 supplies the power converted by the power supply circuit to the external lighting 51, the internal upper wall lighting 53, and the internal under-shelf lighting 55.

[0154] [1-1-5. Structure of lighting power supply device]

[0155] Figure 5: is a diagram showing the structure of a lighting power supply device 50. The lighting power supply device 50 includes a power input unit 52, a signal input unit 54, a power circuit 58, and a dimming circuit 59. In addition, the lighting power supply device 50 integrally includes an external power output unit 56 and an internal power output unit 57. In other words, the external power output unit 56 and the internal power output unit 57 are provided together in the housing of one lighting power supply device 50. The lighting power supply device 50 is connected to a commercial AC power supply via a control device 90. The control device 90 includes a relay 92, and the relay 92 is turned on and off by the control of the control device 90. The output side of the relay 92 is connected to an internal and external power input unit 52a of the power input unit 52 via an input side power line 61. The internal and external power input unit 52a is, for example, a connector, a terminal, etc. In the lighting power supply device 50, the power circuit 58 is connected to the power input unit 52 via a power line 63. When the relay 92 is closed, the commercial AC power supply is connected to the power circuit 58 from the input side power line 61.

[0156] The power supply circuit 58 is composed of an AC / DC converter that converts AC current into DC current and a voltage conversion circuit or an inverter circuit. The power supply circuit 58 is a circuit that converts AC current supplied from a commercial AC power source into DC current of a predetermined voltage and outputs the DC current.

[0157] The output side of the power circuit 58 is connected to the external power output unit 56 via the power line 65. The external power output unit 56 is connected to the external lighting 51 via the external power line 67. The external power line 67 is a cable that is led from the lighting power supply device 50 to the location of the external lighting 51, and the external power output unit 56 is a connector, a terminal, etc. connected to the external power line 67. The DC current output by the power circuit 58 flows to the external lighting 51 through the external power line 67.

[0158] A dimming circuit 59 is connected to the output side of the power circuit 58. The dimming circuit 59 is connected to the internal power output unit 57 via a power line 66. The internal power output unit 57 is connected to the internal upper wall lighting 53 and the internal under-shelf lighting 55 via internal power lines 68, respectively.

[0159] Furthermore, a signal line 73 is connected to the dimming circuit 59 . The signal line 73 is connected to an input-side signal line 71 extending from the control device 90 via the signal input unit 54 .

[0160] The dimming circuit 59 supplies power to the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse based on the direct current output by the power circuit 58. The dimming circuit 59 has a dimming function. The dimming circuit 59 is, for example, a switching circuit that outputs pulse currents to the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse. The dimming circuit 59 adjusts the brightness of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse by PWM (Pulse Wave Modulation) control that changes the duty cycle of the pulse current. In this embodiment, the brightness of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse, that is, the dimming rate, is controlled by a signal input from the signal line 73 to the dimming circuit 59. The lighting power supply device 50 switches the power output from the internal power supply output unit 57 by the signal input to the dimming circuit 59, thereby dimming the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse. In addition, the lighting and extinguishing of the interior upper wall lighting 53 and the interior under-shelf lighting 55 are controlled by the signal input from the signal line 73 to the dimming circuit 59 .

[0161] In addition, the dimming rate mentioned here is the relative light beam (brightness) when the maximum light beam (brightness) of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse is set to 100%. In this embodiment, the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse are dimmed by PWM control, so the light beam when the dimming rate is 100% is equal to the light beam when the duty cycle of the pulse wave is 100%. In addition, the dimming rate can be a structure that can obtain multiple discrete stages, or a structure that changes continuously without steps.

[0162] Thus, in this embodiment, in a manner that the path for supplying power from the control device 90 to the lighting power supply device 50 is integrated into one, it is possible to control the lighting and extinguishing of the external lighting 51, the internal upper wall lighting 53, and the internal shelf lighting 55. Furthermore, in this embodiment, the brightness of the internal upper wall lighting 53 and the internal shelf lighting 55 can be adjusted.

[0163] When a plurality of lighting power supply devices 50 are provided in the showcase 1 as in the present embodiment, the power input units 52 of the lighting power supply devices 50 are connected in parallel to the control device 90. In addition, the signal input units 54 of the lighting power supply devices 50 are connected in parallel to the control device 90. The control device 90 outputs the same power and signal to the lighting power supply devices 50, so that the lighting power supply devices 50 are linked.

[0164] [1-2. Action]

[0165] Figure 6 It is an explanatory diagram showing the transition of the lighting state of each lighting 51 , 53 , 55 .

[0166] When the exterior lighting 51, interior upper wall lighting 53 and interior under-shelf lighting 55 are off, the showcase 1 is in the off state ST1. When the showcase 1 is in the off state ST1, the relay 92 of the control device 90 is turned off, and the power supply circuit 58 is cut off.

[0167] When the showcase 1 is in the light-off state ST1 , by pressing the first button 45 a , the showcase 1 shifts to the full-lighting state ST2 .

[0168] When the showcase 1 is in the full lighting state ST2, the external lighting 51, the internal upper wall lighting 53, and the internal shelf lighting 55 are in the lighting state. When the showcase 1 is in the full lighting state ST2, the relay 92 of the control device 90 is closed, and power is supplied to the external lighting 51 via the power circuit 58. In addition, the output power of the power circuit 58 is converted by the dimming circuit 59 and supplied to the internal upper wall lighting 53 and the internal shelf lighting 55.

[0169] When the showcase 1 is in the full lighting state ST2, by pressing the first button 45a, the state of the showcase 1 shifts to the outside lighting state ST3.

[0170] When the showcase 1 is in the external lighting state ST3, the external lighting 51 is lit, and the internal upper wall lighting 53 and the internal under-shelf lighting 55 are extinguished. When the showcase 1 is in the external lighting state ST3, the relay 92 of the control device 90 is closed, and power is supplied to the external lighting 51 via the power supply circuit 58. On the other hand, in the external lighting state ST3, the output of the dimming circuit 59 is stopped by a signal sent from the control device 90, and the supply of power to the internal upper wall lighting 53 and the internal under-shelf lighting 55 is stopped.

[0171] When the showcase 1 is in the out-of-store lighting state ST3, by pressing the first button 45a, the state of the showcase 1 shifts to the light-off state ST1.

[0172] Thus, in this embodiment, by simply pressing the first button 45a, it is possible to switch between the off state in which each lighting 51, 53, 55 is off, the full lighting state in which each lighting 51, 53, 55 is lit, and the outside-warehouse lighting state in which only the outside-warehouse lighting 51 is lit.

[0173] When the showcase 1 is in the full lighting state ST2, by long pressing the first button 45a, the state of the showcase 1 shifts to the dimming setting state ST4.

[0174] When the showcase 1 is in the dimming setting state ST4, the external lighting 51, the internal upper wall lighting 53, and the internal under-shelf lighting 55 are in a lit state. When the showcase 1 is in the dimming setting state ST4, the relay 92 of the control device 90 is closed, and power is supplied to the external lighting 51 via the power circuit 58. In addition, the output power of the power circuit 58 is converted by the dimming circuit 59 and supplied to the internal upper wall lighting 53 and the internal under-shelf lighting 55.

[0175] In the dimming setting state ST4, by pressing the first button 45a or the second button 45b, the dimming rate of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse can be adjusted. In the case where the first button 45a is pressed in the dimming setting state ST4, the control device 90 changes the signal output to the dimming circuit 59 to reduce the dimming rate of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse. In the case where the second button 45b is pressed, the control device 90 changes the signal output to the dimming circuit 59 to increase the dimming rate of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse. The increase or decrease of the dimming rate may be a structure that increases when the number of times each button 45a, 45b is pressed is large, or a structure that increases when the time for each button 45a, 45b to be pressed is long.

[0176] When the showcase 1 is in the dimming setting state ST4, by pressing the third button 45c, the state of the showcase 1 is transferred to the full lighting state ST2. The dimming rate of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse in the full lighting state ST2 is set to the dimming rate when the third button 45c is pressed in the dimming setting state ST4. That is, in the dimming setting state ST4, the showcase 1 can set the dimming rate of the upper wall lighting 53 in the warehouse and the under-shelf lighting 55 in the warehouse in the full lighting state ST2.

[0177] [1-3. Effects, etc.]

[0178] As described above, in the present embodiment, the lighting power supply device 50 is a lighting power supply device 50 that supplies power to the lightings 51, 53, 55 provided in the display cabinet 1, and is integrally provided with: a power input unit 52 that receives power supply; and an external power output unit 56 that supplies power to the external lighting 51 of the display cabinet 1 based on the power input to the power input unit 52; and an internal power output unit that supplies power to the internal upper wall lighting 53 and the internal under-shelf lighting 55 of the display cabinet 1 based on the power input to the power input unit 52.

[0179] Thus, the power sources for the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55 can be integrated into the lighting power source device 50. Therefore, the structure of the showcase 1 can be simplified.

[0180] As in the present embodiment, the lighting power supply device 50 may also be configured to have a signal input unit 54 to which a signal is input, and the power input unit 52 supplies power to an external power output unit 56 and an internal power output unit 57 respectively based on the power input to the power input unit 52, and the output of power from at least one of the external power output unit 56 and the internal power output unit 57 is switched by the signal input to the signal input unit 54.

[0181] Thus, the lighting power supply device 50 can independently turn on and off at least one of the external lighting 51 and the internal upper wall lighting 53 and the internal under-shelf lighting 55 without increasing the path of the power received from the showcase 1. Therefore, the structure of the showcase 1 is not complicated, and the convenience can be improved.

[0182] In particular, in this embodiment, the lighting power supply device 50 switches the presence or absence of power output from the internal power supply output unit 57 by the signal input to the signal input unit 54. Therefore, the brightness inside the warehouse can be adjusted by turning on and off the internal lighting 53, 55, based on the lighting of the external lighting 51 that illuminates the entire interior of the display room 12.

[0183] It can also be configured as in the present embodiment, where the supply of power based on at least one of the external power supply output unit 56 and the internal power supply output unit 57 is switched by a signal input to the signal input unit, and the external lighting 51 or the internal upper wall lighting 53 and the internal shelf lighting 55 are dimmed.

[0184] Thus, the lighting power supply device 50 can dim at least one of the external lighting 51, the internal upper wall lighting 53, and the internal under-shelf lighting 55 simply by receiving a signal from the showcase 1. Therefore, the structure of the showcase 1 is not complicated, and convenience can be improved.

[0185] In particular, in the present embodiment, the lighting power supply device 50 can dim the interior upper wall lighting 53 and the interior under-shelf lighting 55. Therefore, on the premise that the exterior lighting 51 for lighting the entire interior of the display room 12 is turned on, the interior upper wall lighting 53 and the interior under-shelf lighting 55 are set to the minimum necessary brightness, thereby achieving energy saving.

[0186] As in the present embodiment, the display cabinet 1 may be configured to include a plurality of lighting power supply devices 50, the display cabinet 1 being divided into a specified number of lighting areas in the width direction, each lighting area being provided with an off-warehouse lighting 51 and an on-warehouse lighting 53, 55, and each of the off-warehouse lighting 51 and the on-warehouse lighting 53, 55 arranged in each lighting area being connected to a lighting power supply device 50.

[0187] Thus, by providing the lighting power supply device 50 and the lighting 51, 53, 55 of the connection destination of each lighting power supply device 50 according to the number of different lighting areas, it is possible to configure a showcase 1 having different widths. Therefore, the structure of the showcase 1 becomes simple, and it is possible to easily provide a showcase 1 having different widths.

[0188] As in the present embodiment, in the showcase 1, each lighting power supply device 50 may be arranged in a lighting area where the connected external lighting 51 and internal lighting 53, 55 are arranged.

[0189] Thus, the lighting power supply device 50 is arranged in the same lighting area as the lightings 51, 53, 55 at the connection destination, so that the difference in the structure in each lighting area becomes smaller. In addition, the wiring length from each lighting power supply device 50 to each lighting 51, 53, 55 at the connection destination can be shortened. Therefore, the structure of the showcase 1 becomes simpler, and the showcase 1 of different width sizes can be easily provided.

[0190] As in the present embodiment, the display cabinet 1 may also be configured to include: a lighting power supply device 50; a control device 90 that supplies power to a power input unit 52 and outputs a signal to a signal input unit 54; and an operating unit 45 that accepts an operation, wherein the control device 90 changes the dimming rate setting of at least one of the upper wall lighting 53 inside the warehouse, the under-shelf lighting 55 inside the warehouse, and the external lighting 51 that are being lit by operating the operating unit 45.

[0191] This allows the dimming rate to be adjusted while checking the brightness of at least one of the in-compartment lighting 53 and 55 and the external lighting 51. Therefore, convenience can be improved.

[0192] In particular, in this embodiment, the dimming rate settings of the illuminated interior upper wall lighting 53 and the interior under-shelf lighting 55 can be changed by operating the operating unit 45. Therefore, the brightness inside the warehouse can be adjusted by turning on and off the interior lighting 53 and 55, based on the lighting of the exterior lighting 51 that illuminates the entire interior of the display room 12.

[0193] As in the present embodiment, it may be configured that, in the display cabinet 1, the operating unit 45 has a first button 45a, and the control device 90, through the operation of the first button 45a, can light up, extinguish, and switch to a state in which the dimming rate can be set for at least one of the upper wall lighting 53 inside the warehouse, the under-shelf lighting 55 inside the warehouse, and the lighting outside the warehouse 51.

[0194] Thus, at least one of the interior lighting 53, 55 and the exterior lighting 51 can be turned on or off and switched to a state where the dimming rate can be set without operating any operation other than the first button 45a.

[0195] In particular, in the present embodiment, the lighting and extinguishing of each of the interior lightings 53 and 55 and the switching to a state in which the dimming rate can be set can be performed without performing any operation other than the first button 45 a.

[0196] (Implementation Method 2)

[0197] Below, refer to Figure 7 and Figure 8 Embodiment 2 will be described. In addition, only the points different from Embodiment 1 will be described below, and duplicate descriptions will be omitted.

[0198] [2-1. Structure]

[0199] Figure 7 1 is a diagram showing the structure of a lighting power supply device 150 according to Embodiment 2. In the lighting power supply device 150 according to Embodiment 2, the dimming circuit 59 of Embodiment 1 is replaced by a circuit 159. The circuit 159 includes a photocoupler and the like. A signal is input to the circuit 159 from the control device 90 via the input side signal line 71, the signal input unit 54, and the signal line 73. The circuit 159 switches the supply of power to the in-warehouse power supply output unit 57 by the input of the signal. As a result, each in-warehouse lighting 53, 55 is turned on or off. In the present embodiment, each in-warehouse lighting 53, 55 is not dimmed and can take any state of a lit state or an off state.

[0200] [2-2. Action]

[0201] Figure 8 It is an explanatory diagram showing the transition of the lighting state of each lighting 51, 53, 55 according to the second embodiment.

[0202] When the exterior lighting 51, interior upper wall lighting 53, and interior under-shelf lighting 55 are off, the showcase 1 of Embodiment 2 is in the off state ST11. When the showcase 1 is in the off state ST11, the relay 92 of the control device 90 is turned off, and the flow of power to the power supply circuit 58 is cut off.

[0203] When the showcase 1 is in the light-off state ST11, by pressing the first button 45a or the second button 45b, the showcase 1 shifts to the full-lighting state ST12.

[0204] When the showcase 1 is in the full lighting state ST12, the external lighting 51, the internal upper wall lighting 53, and the internal shelf lighting 55 are in the lighting state. When the showcase 1 is in the full lighting state ST12, the relay 92 of the control device 90 is closed, and power is supplied to the external lighting 51 via the power circuit 58. In addition, the output power of the power circuit 58 is supplied to the circuit 159. A signal for supplying power to the internal power output unit 57 is input from the control device 90 to the circuit 159. Power is supplied to the internal upper wall lighting 53 and the internal shelf lighting 55 from the circuit 159.

[0205] When the showcase 1 is in the full lighting state ST12, the showcase 1 is switched to the extinguishing state ST11 by pressing the second button 45b. When the showcase 1 is in the full lighting state ST12, the showcase 1 is switched to the out-of-store lighting state ST13 by pressing the first button 45a.

[0206] When the showcase 1 is in the external lighting state ST13, the external lighting 51 is lit, and the internal upper wall lighting 53 and the internal under-shelf lighting 55 are extinguished. When the showcase 1 is in the external lighting state ST13, the relay 92 of the control device 90 is closed, and power is supplied to the external lighting 51 via the power supply circuit 58. On the other hand, in the external lighting state ST13, the output of the circuit 159 is stopped by a signal sent from the control device 90, and the supply of power to the internal upper wall lighting 53 and the internal under-shelf lighting 55 is stopped.

[0207] When the showcase 1 is in the outside lighting state ST13, the showcase 1 is switched to the full lighting state ST12 by pressing the second button 45b. When the showcase 1 is in the outside lighting state ST13, the showcase 1 is switched to the extinguishing state ST11 by pressing the first button 45a.

[0208] [2-3. Effects, etc.]

[0209] As described above, in the present embodiment, the lighting power supply device 150 may also be configured to include a signal input unit 54 to which a signal is input, and the power input unit 52 supplies power to the external power output unit 56 and the internal power output unit 57 respectively according to the power input to the power input unit 52, and the signal input to the signal input unit 54 is used to switch the output of power from at least one of the external power output unit 56 and the internal power output unit 57.

[0210] Thus, the lighting power supply device 150 can independently turn on and off at least one of the external lighting 51 and the internal upper wall lighting 53 and the internal under-shelf lighting 55 without increasing the path of the power received from the showcase 1. Therefore, the structure of the showcase 1 is not complicated, and the convenience can be improved.

[0211] (Implementation 3)

[0212] Below, refer to Fig. 9 and Fig.10 Embodiment 3 will be described. In the following, only the differences from Embodiments 1 and 2 will be described, and duplicate descriptions will be omitted.

[0213] [3-1. Structure]

[0214] Fig. 9 This is a diagram showing a configuration of a lighting power supply device 250 according to a third embodiment.

[0215] The lighting power supply device 250 does not include a dimming circuit 59, but includes two power supply circuits 58 connected in parallel to the control device 290. The power input unit 252 of the lighting power supply device 250 includes an external power supply input unit 252a and an internal power supply input unit 252b. One power supply circuit 58 is connected to the control device 290 via one input-side power supply line 61, the external power supply input unit 252a, and one power supply line 63. The other power supply circuit 58 is connected to the control device 290 via the other input-side power supply line 61, the internal power supply input unit 252b, and the other power supply line 63. That is, the two power supply circuits 58 are independently connected to the control device 290. The external power supply output unit 56 is connected to the output side of the one power supply circuit 58. The internal power supply output unit 57 is connected to the output side of the other power supply circuit 58.

[0216] That is, the external power supply output unit 56 is connected to the external power supply input unit 252a via one power supply circuit 58. The internal power supply output unit 57 is connected to the internal power supply input unit 252b via the other power supply circuit 58. The external lighting 51 is connected to the external power supply output unit 56 via the external power supply line 67. Each internal lighting 53, 55 is connected to the internal power supply output unit 57 via the internal power supply line 68.

[0217] The control device 290 is provided with a plurality of relays 92 connected to each input-side power supply line 61. In the present embodiment, power is supplied from the control device 290 to the lighting power supply device 250 via two independent paths. In addition, the control device 290 controls the lighting and extinguishing of each lighting 51, 53, 55 by disconnecting or connecting the two independent power paths respectively by opening and closing the relay 92. Power is supplied to the external power supply input unit 252a via one of the relays 92 provided by the control device 290. Power is supplied to the internal power supply input unit 252b via the other relay 92 provided by the control device 290. In the present embodiment, the relay 92 on one side corresponds to the "first switch". In the present embodiment, the relay 92 on the other side corresponds to the "second switch". In the present embodiment, the control device 290 corresponds to the "external device".

[0218] In addition, when a plurality of lighting power supply devices 250 are provided in the showcase 1 as in the present embodiment, the external power supply input parts 252a of each lighting power supply device 250 are connected in parallel with respect to the control device 290. In addition, the internal power supply input parts 252b of the internal power supply of each lighting power supply device 250 are connected in parallel with respect to the control device 290. The control device 290 outputs the same power and signal to each lighting power supply device 250, so that each lighting power supply device 250 operates in conjunction with each other.

[0219] [3-2. Action]

[0220] Fig.10 It is an explanatory diagram showing the transition of the lighting state of each lighting 51, 53, 55 according to the third embodiment.

[0221] When the external lighting 51 is off, the showcase 1 is in the external lighting state ST21. When the external lighting 51 is on, the showcase 1 is in the external lighting state ST22. The external lighting state ST21 and the external lighting state ST22 are switched by pressing the second button 45b. That is, each time the second button 45b is pressed, the control device 290 switches the relay 92 connected to the external lighting 51 on and off.

[0222] When the lightings 53 and 55 in the warehouse are off, the showcase 1 is in the off state ST23 in the warehouse. When the lightings 53 and 55 in the warehouse are on, the showcase 1 is in the on state ST24 in the warehouse. The off state ST23 in the warehouse and the on state ST24 in the warehouse are switched by pressing the second button 45b. That is, each time the second button 45b is pressed, the control device 290 switches the opening and closing of the other relay 92 connected to the lightings 53 and 55 in the warehouse. In addition, the off state ST23 in the warehouse and the on state ST24 in the warehouse are independent of the off state ST21 outside the warehouse and the on state ST22 outside the warehouse.

[0223] [3-3. Effects, etc.]

[0224] As described above, in the present embodiment, the lighting power supply device 250 may be connected to the control device 290 for supplying power to the lighting power supply device 250, the power input unit 52 may include an off-storage power supply input unit 252a connected to the off-storage power supply output unit 56, and an on-storage power supply input unit 252b connected to the on-storage power supply output unit 57, power may be supplied to the off-storage power supply input unit 252a via a relay 92 on one side of the control device 290, and power may be supplied to the on-storage power supply input unit 252b via a relay 92 on the other side of the control device 290.

[0225] This simplifies the structure of the lighting power supply device 250. Therefore, the structure of the showcase 1 can be simplified, and the complexity of the lighting power supply device 250 can be suppressed.

[0226] (Other embodiments)

[0227] As described above, embodiments 1 to 3 are described as examples of the technology disclosed in this application. However, the technology in the present disclosure is not limited thereto, and can also be applied to embodiments that have been changed, replaced, added, omitted, etc. In addition, the various components described in embodiments 1 to 3 above can also be combined as new embodiments.

[0228] Therefore, other embodiments are exemplified below.

[0229] In the above embodiment, the showcase 1 is described as an open showcase, but this is an example. The showcase 1 may be a closed showcase having a transparent door that closes the display chamber 12 from the front, for example.

[0230] In the above embodiment, the showcase 1 is described as having two lighting power supply devices 50 , 150 , 250 , but this is an example, and the showcase 1 may have any number of lighting power supply devices 50 , 150 , 250 or more.

[0231] In the above embodiment, each lighting 51, 53, 55 is described as being composed of an LED, but this is an example. Each lighting 51, 53, 55 may be composed of, for example, a fluorescent lamp or an incandescent lamp. However, by using an LED as each lighting 51, 53, 55, energy saving can be achieved.

[0232] In the above embodiment, the external lighting 51 is installed on the lower surface 39b1 of the front end of the second protrusion 39b in the top cover 39, but this is an example. The external lighting 51 can be any device that is integrally provided with the showcase 1 and illuminates the display room 12 from the outside.

[0233] In the above embodiment, the upper wall lighting 53 and the under-shelf lighting 55 are described as the lighting inside the warehouse, but this is an example. For example, as the lighting inside the warehouse, it is also possible to configure only one of the upper wall lighting 53 and the under-shelf lighting 55. In addition, as the lighting inside the warehouse, lighting other than the upper wall lighting 53 and the under-shelf lighting 55 may be provided in the display room 12.

[0234] In the above embodiment, the operation unit 45 is provided in the operation display unit 40, but this is an example. The operation unit 45 can be provided at any position of the showcase 1. In addition, as long as the operation unit 45 is provided, the showcase 1 may not be provided with the panel 40a or the temperature display unit 41.

[0235] In the above embodiment, each button 45a, 45b, 45c, 45d is described as a momentary push switch, but this is an example. For example, as each button 45a, 45b, 45c, 45d, an alternating switch may be used. In addition, as each button 45a, 45b, 45c, 45d, any switch such as a toggle switch or a rocker switch may be used.

[0236] In the above embodiment, the text printed on each button 45a, 45b, 45c, 45d is an example. Each button 45a, 45b, 45c, 45d may be printed with other text or images, or may not be printed. The first mark 45a1 and the second mark 45b1 may be any text or image, or may not be printed.

[0237] The internal structure of the lighting power supply device 50, 150, 250 in the above-mentioned embodiment is an example and is not limited to the above-mentioned embodiment. For example, the lighting power supply device 50, 150, 250 may also be a structure having a dimming circuit 59 or a circuit 159 connected in series between the output side of the power supply circuit 58 and the external power supply output unit 56. In this case, in the lighting power supply device 50, 150, the dimming circuit 59 or the circuit 159 connected in series may not be provided between the output side of the power supply circuit 58 and the internal power supply output unit 57. In addition, the lighting power supply device 50, 150, 250 may also be a structure in which the presence or absence of the output of power from one or both of the external power supply output unit 56 and the internal power supply output unit 57 is switched by the signal input to the signal input unit 54. Furthermore, the lighting power supply device 50, 150, 250 may also switch the supply of power based on one or both of the external power supply output unit 56 and the internal power supply output unit 57 by the signal input to the signal input unit 54, and dim the external lighting 51 and the internal lighting 53, 55. That is, control may be performed based on a signal for lighting up either the external lighting 51 or each of the internal lightings 53, 55, or control may be performed based on a signal for lighting up both. Furthermore, dimming may be performed on both the external lighting 51 and the internal lighting 53, 55 by one signal. In this case, dimming is performed on the lighting that is not distinguished between the external lighting 51 and the internal lighting 53, 55. In addition, the components of the lighting power supply device 50, 150, 250 such as the power supply circuit 58, the dimming circuit 59, and the circuit 159 are not limited to the configurations described in the embodiment.

[0238] Figure 6 , Figure 8 as well as Fig.10The illustrated explanatory diagram is an example, and the transition of the lighting state of each illumination 51, 53, 55 and the operation for the transition are not limited to this.

[0239] In the above embodiment, the control device 90, 290 is described as having the relay 92 that switches the supply of power by opening and closing, but this is an example. For example, the control device 90, 290 may also have a relay other than a mechanical relay such as a photorelay or a solid-state relay. In addition, the control device 90, 290 may also be configured to switch the supply of power to the power input unit 52, 252 by a structure other than a relay.

[0240] In addition, the above-mentioned embodiments are for illustrating the technology in the present disclosure, and therefore, various changes, substitutions, additions, omissions, etc. can be made within the scope of the claims or their equivalents.

[0241] [Structure supported by the above-mentioned embodiment]

[0242] The above-mentioned embodiment supports the following structure.

[0243] (Note)

[0244] (Technology 1)

[0245] A lighting power supply device supplies electric power to lighting installed in a display case, wherein the lighting power supply device integrally comprises: a power input unit that receives power supply; and an external power output unit and an internal power output unit, wherein the external power output unit supplies electric power to the external lighting of the display case based on the power input to the power input unit, and the internal power output unit supplies electric power to the internal lighting of the display case based on the power input to the power input unit.

[0246] Here, "integrated" means that even if the power input unit, the external power output unit, and the internal power output unit are all mounted on one substrate, or part or all of them are mounted on other substrates, all of these substrates can be stored in one frame, or can be handled as a unit in a state of being mounted and fixed on one base. Moreover, for this one substrate, one frame, or one unit, it is sufficient as long as it can be in a state of inputting and outputting signals or power to and from the outside.

[0247] Thus, the power sources for external lighting and internal lighting can be integrated into one lighting power supply device, thereby simplifying the structure of the showcase provided with the lighting power supply device.

[0248] (Technique 2)

[0249] According to the lighting power supply device described in Technology 1, it is connected to an external device that supplies power to the lighting power supply device, and the power input part has: an off-storage power input part, which is connected to the off-storage power output part; and an in-storage power input part, which is connected to the in-storage power output part, and power is supplied to the off-storage power input part via a first switch provided by the external device, and power is supplied to the in-storage power input part via a second switch provided by the external device.

[0250] This simplifies the structure of the lighting power supply device. Therefore, it is possible to simplify the structure of the showcase in which the lighting power supply device is installed, and suppress the complication of the lighting power supply device.

[0251] (Technique 3)

[0252] The lighting power supply device according to technology 1 or 2 has a signal input unit to which a signal is input, and the power input unit supplies power to the external power output unit and the internal power output unit respectively according to the power input to the power input unit, and the output of power from at least one of the external power output unit and the internal power output unit is switched by the signal input to the signal input unit.

[0253] Thus, the lighting power supply device can independently turn on and off at least one of the external lighting and the internal lighting without increasing the path of the power received from the showcase, thereby improving convenience without complicating the structure of the showcase.

[0254] (Technique 4)

[0255] According to the lighting power supply device described in Technology 3, the signal input to the signal input unit switches the power supply based on at least one of the external power supply output unit and the internal power supply output unit to dim the external lighting or the internal lighting.

[0256] Thus, the lighting power supply device can dim at least one of the external lighting and the internal lighting by simply receiving a signal from the showcase, thereby improving convenience without complicating the structure of the showcase.

[0257] (Technique 5)

[0258] A display cabinet comprising a plurality of lighting power supply devices according to any one of technologies 1 to 4, wherein the display cabinet is divided into a specified number of lighting areas in a width direction, each of the lighting areas is provided with the off-warehouse lighting and the on-warehouse lighting, and each of the off-warehouse lighting and the on-warehouse lighting arranged in each of the lighting areas is connected to one of the lighting power supply devices.

[0259] Thus, by setting the lighting power supply device and the in-store lighting of the connection destination of each lighting power supply device and the in-store lighting group according to the number of different lighting areas, it is possible to form a display cabinet with different width sizes. Therefore, the structure of the display cabinet becomes simple, and it is easy to provide a display cabinet with different width sizes.

[0260] (Technique 6)

[0261] The showcase according to technology 5, wherein each of the lighting power supply devices is arranged in the lighting area where the connected external lighting and internal lighting are arranged.

[0262] Thus, the lighting power source is arranged in the same lighting area as the external lighting and internal lighting of the connection destination, so the difference in the structure in each lighting area becomes smaller. In addition, the wiring length from each lighting power source to the external lighting and internal lighting of the connection destination can be shortened. Therefore, the structure of the showcase is simpler, and showcases of different widths can be easily provided.

[0263] (Technique 7)

[0264] A display cabinet comprises: a lighting power supply device as described in Technology 4; a control device, which supplies power to the power input unit and outputs a signal to the signal input unit; and an operating unit, which accepts an operation, wherein the control device changes the dimming rate setting of at least one of the lighting inside the warehouse or the lighting outside the warehouse by operating the operating unit during the lighting of the lighting inside the warehouse or the lighting outside the warehouse.

[0265] This allows the user to adjust the dimming rate while checking the brightness of the lighting inside the warehouse or the lighting outside the warehouse. This improves convenience.

[0266] (Technology 8)

[0267] According to the display cabinet described in Technology 7, the operating unit has a lighting switch, and the control device can turn on, off, and switch at least one of the in-warehouse lighting and the out-warehouse lighting to a state in which a dimming rate can be set by operating the lighting switch.

[0268] Thus, the lighting outside the warehouse or the lighting inside the warehouse can be turned on or off, or switched to a state where the dimming rate can be set, without performing any operation other than the lighting switch. Therefore, the convenience can be improved and the number of components installed in the operation unit can be reduced.

[0269] Industrial Applicability

[0270] The present disclosure can be applied to a showcase or a lighting power supply device for the showcase. Specifically, the present disclosure can be applied to an open showcase for a store, a closed showcase with a door, or the like, or a lighting power supply device for the showcase.

Claims

1. A lighting power supply device for supplying power to lighting installed in a display case, wherein: The lighting power supply device integrally comprises: a power input unit that receives power supply; and An external power output unit and an internal power output unit, wherein the external power output unit supplies power to the external lighting of the display case based on the power input to the power input unit, and the internal power output unit supplies power to the internal lighting of the display case based on the power input to the power input unit.

2. The lighting power supply device according to claim 1, wherein: The lighting power supply device is connected to an external device that supplies power to the lighting power supply device. The power input unit comprises: an external power input unit connected to the external power output unit; and an in-store power input unit connected to the in-store power output unit, supplying electric power to the external power supply input unit via a first switch provided in the external device, Electric power is supplied to the internal power supply input unit via a second switch provided in the external device.

3. The lighting power supply device according to claim 1, wherein: The lighting power supply device includes a signal input portion to which a signal is input. The power input unit supplies power to the external power output unit and the internal power output unit, respectively, based on the power input to the power input unit. The presence or absence of power output from at least one of the external power supply output unit and the internal power supply output unit is switched by the signal input to the signal input unit.

4. The lighting power supply device according to claim 3, wherein: The signal input to the signal input unit switches the supply of power by at least one of the external power supply output unit and the internal power supply output unit, thereby dimming the external lighting or the internal lighting.

5. A display cabinet comprising: A lighting power supply device according to any one of claims 1 to 4, The display case is divided into a predetermined number of lighting areas in the width direction. The exterior lighting and the interior lighting are respectively arranged in each lighting area. One of the lighting power supply devices is connected to each of the exterior lighting and the interior lighting arranged in each of the lighting areas.

6. The display case according to claim 5, wherein: Each of the lighting power supply devices is arranged in the lighting area where the connected external lighting and internal lighting are arranged.

7. A display cabinet comprising: The lighting power supply device according to claim 4; a control device that supplies power to the power input unit and outputs a signal to the signal input unit; and The operation department accepts operations. The control device changes the setting of the dimming rate of at least one of the lighting of the interior lighting or the lighting of the exterior lighting by the operation of the operation unit during the lighting of the interior lighting or the lighting of the exterior lighting.

8. The display case according to claim 7, wherein: The operating part has an illumination switch. The control device can turn on or off at least one of the interior lighting and the exterior lighting, and switch the lighting to a state in which a dimming rate can be set, through the operation of the lighting switch.

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