Illumination power supply device and showcase

Abstract

To provide an illumination power supply device that can simplify a structure of a showcase, and the showcase.SOLUTION: An illumination power supply device according to the present disclosure supplies power to illumination lamps provided in a showcase, and integrally comprises a power input part for receiving the supply of the power, an exterior power output part for supplying the power to an exterior illumination lamp of the showcase on the basis of the power inputted to the power input part, and an interior power output part for supplying the power to an interior illumination lamp of the showcase on the basis of the power inputted to the power input part.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a lighting power supply device and a showcase. [Background technology]

[0002] Patent Document 1 discloses an open showcase in which a canopy is attached to the upper edge of the front opening, protruding forward, and a lighting device for the canopy is attached to the underside of the canopy. This open showcase illuminates products placed on the shelves with lighting devices attached to the shelves and the canopy. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-172531 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide a lighting power supply device and a showcase that can simplify the configuration of the showcase. [Means for solving the problem]

[0005] The lighting power supply device of the present disclosure is a lighting power supply device that supplies power to lighting provided in a showcase, and is integrally equipped with a power input unit that receives a supply of power, an outside power output unit that supplies power to the outside lighting of the showcase based on the power input to the power input unit, and an inside power output unit that supplies power to the inside lighting of the showcase based on the power input to the power input unit.

[0006] The showcase of the present disclosure includes a plurality of the above-mentioned lighting power supply devices, and the showcase 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 of the lighting areas, and 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. Effect of the Invention

[0007] According to the lighting power supply device and showcase of the present disclosure, the lighting power supply devices that supply power to the exterior lighting and the interior lighting can be integrated into one, which makes it possible to simplify the configuration of the showcase. [Brief description of the drawings]

[0008] [Figure 1] 1 is a cross-sectional view of a showcase according to a first embodiment. [Diagram 2] Front view of showcase [Diagram 3] A diagram showing the configuration of the operation display unit. [Figure 4] Showcase Block Diagram [Diagram 5] A diagram showing the configuration of a lighting power supply device. [Figure 6] An explanatory diagram showing the transition of the lighting state of each light [Figure 7] FIG. 13 is a diagram showing a configuration of a lighting power supply device according to a second embodiment. [Figure 8] FIG. 11 is an explanatory diagram showing the transition of the lighting state of each light according to the second embodiment. [Figure 9] FIG. 13 is a diagram showing a configuration of a lighting power supply device according to a third embodiment. [Figure 10] FIG. 11 is an explanatory diagram showing the transition of the lighting state of each light according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (The knowledge and other information that formed the basis of this disclosure) At the time when the inventors came up with the present disclosure, it was common for showcases to have both interior and exterior lighting. Therefore, in the industry, a single lighting power supply device was used to supply power to all exterior lighting, and separate lighting power supplies were provided for the interior lighting in proportion to the number of interior lightings arranged in the width direction to supply power to the showcases. Under such circumstances, the inventors discovered that the conventional design had a problem in that the configuration of the showcase was easily complicated, and in order to solve this problem, they came up with the subject of the present disclosure. In view of this, the present disclosure provides a lighting power supply device and a showcase that can simplify the configuration of the showcase.

[0010] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0011] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to FIGS. [1-1. Configuration] [1-1-1. Overall composition of the showcase] Fig. 1 is a cross-sectional view of the showcase 1, showing a cross section perpendicular to the width direction of the showcase 1. Fig. 2 is a front view of the showcase 1 according to this embodiment. The showcase 1 is placed on the floor of a store such as a supermarket or a convenience store, and displays items such as beverages and foods in a refrigerated state. The showcase 1 is a so-called open-type showcase.

[0012] The showcase 1 has a generally box-shaped case 11 with an open front for inserting and removing products. Hereinafter, the opening direction of the case 11 in the horizontal direction will be referred to as the front, and the direction perpendicular to the front-to-rear direction in the horizontal direction will be referred to as the width direction or the left-to-right direction. The showcase 1 has a base portion 18 that supports the case 11. Inside the case 11, a display room 12 that is a space in which products are displayed is provided.

[0013] The case 11 has a bottom wall 13 that covers the display chamber 12 from below. The case 11 has a pair of side walls 14 that are erected on the left and right edges of the bottom wall 13 and cover the display chamber 12 from the left and right directions. The case 11 has a rear wall 15 that spans between the pair of left and right side walls 14 and covers the display chamber 12 from the rear. The case 11 has an upper wall 16 that spans between each of the side walls 14 and the rear wall 15 and covers the display chamber 12 from above. The bottom wall 13 is formed with a lower front wall 17 that is formed by bending the front part of the bottom wall 13 upward and extending it. The bottom wall 13, each side wall 14, the lower front wall 17, the rear wall 15, and the upper wall 16 are all heat-insulating walls.

[0014] A pedestal portion 18 is provided on the lower surface of the bottom wall 13. The pedestal portion 18 is placed on the floor, which is the placement surface of the showcase 1. The pedestal portion 18 supports the case 11 with its upper surface.

[0015] An inner wall 20 is provided inside the case 11, spaced apart from the inner surface of the case 11 and covering the case 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 deck pan 26 extending forward approximately horizontally from the lower end of the partition wall 22 and connected to an upper portion of the lower front wall 17.

[0016] The display chamber 12 is formed by being partitioned by the inner wall 20 and each side wall 14. For example, the partition wall 22 functions as a back panel that constitutes the back surface of the display chamber 12. A plurality of display shelves 28 on whose upper surfaces products are placed and displayed are provided inside the display room 12. The display shelves 28 are arranged vertically, attached to the partition wall 22 at intervals from each other, and extend substantially horizontally forward. In this embodiment, the deck pan 26 is also configured to be able to display products, and the deck pan 26 functions as the lowest display shelf. The front end of the deck pan 26 is located forward of the front ends of the display shelves 28. Also, in this embodiment, four display shelves 28 are arranged vertically, but the number of display shelves 28 may be any number equal to or greater than one. Also, a configuration in which no display shelves 28 are provided may be used.

[0017] A duct 30 is formed between the inner wall 20 and the case 11. The duct 30 is a space surrounded by the inner wall 20, the bottom wall 13, each side wall 14, the lower front wall 17, the rear wall 15, and the upper wall 16.

[0018] The duct 30 has a lower duct 32 formed between the deck pan 26 and the bottom wall 13 and extending in the front-to-rear direction. The duct 30 has a rear duct 34 formed between the partition wall 22 and the rear wall 15 and extending in the up-down direction. The duct 30 has an upper duct 36 formed between the inner upper wall 24 and the upper wall 16 and extending in the front-to-rear direction. The display chamber 12 is surrounded by the lower duct 32, the rear duct 34, and the upper duct 36.

[0019] An air outlet 37 that opens downward and communicates with the display chamber 12 is provided at the front end of the upper duct 36. The air outlet 37 is located below the front end of the upper wall 16, at a location located at the upper part of the front side of the display chamber 12.

[0020] An intake port 38, which is an opening that opens upward and communicates with the display chamber 12, is provided at the upper part of the front end of the lower duct 32. The intake port 38 is provided at the lower front part of the display chamber 12, continuing from the rear part of the lower front wall 17. The intake port 38 is located forward of the air outlet 37. The air outlet 37 and the intake port 38 extend in an elongated manner between the side walls 14 across substantially the entire width of the case 11.

[0021] The showcase 1 has a cooling system 31 for cooling the display room 12 (see FIG. 4). This cooling system is a refrigeration cycle that includes a compressor for compressing a refrigerant, an evaporator 31a, a condenser, and an expansion mechanism that are connected in a circular manner by piping, and the cooling system is filled with a refrigerant. In this embodiment, the evaporator 31a is provided inside the duct 30 of the case 11, and the above-mentioned compressor, condenser, and expansion mechanism are housed in an outdoor unit that is separate from the showcase 1. Note that the compressor, condenser, and expansion mechanism may be provided integrally with the showcase 1, for example, by being housed inside the base portion 18.

[0022] A blower 33 is provided inside the duct 30. The blower 33 has a motor 33a and an impeller 33b attached to an output shaft of the motor 33a. The blower 33 rotates the impeller 33b with the motor 33a, thereby circulating the air (cold air) cooled by the evaporator 31a.

[0023] A canopy 39 is attached to the front end 16a of the upper wall 16 of the case 11. The canopy 39 is provided over substantially the entire front end 16a in the width direction. The canopy 39 is formed with a first protrusion 39a that protrudes downward near the front end 16a of the upper wall 16 and extends below the front end 16a. A front surface 39a1 of the first protrusion 39a is inclined downward toward the rear. The canopy 39 is formed with a second protrusion 39b that is above the upper wall 16 and extends forward beyond the front end 16a and the first protrusion 39a. A lower surface 39b1 of the front end of the second protrusion 39b is inclined in a direction in which the front is located downward.

[0024] 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. The operation display unit 40 also accepts operations by a user.

[0025] A lighting power supply device 50 is provided inside the second protrusion 39b. The lighting power supply device 50 supplies power to each of the lights in the showcase 1.

[0026] [1-1-2. Lighting arrangement]

[0027] The showcase 1 is divided into an interior that stores products and an exterior that is outside the interior. The interior includes the display room 12, and is an area where, for example, the airflow blown by the blower 33 circulates. The exterior is a portion that is not included in the interior of the showcase 1 in its configuration. The interior and exterior are separated by a plane that connects the lower end of the canopy 39 and the upper end of the lower front wall 17, as shown by the dashed line 11a in FIG. 1. The dashed line 11a also connects the air outlet 37 and the air inlet 38. For this reason, it can be said that the interior, which is inside the display room 12, and the exterior, which is outside the display room 12, are separated by a planar air flow that spreads in the width direction and is blown out from the air outlet 37 and sucked into the air inlet 38.

[0028] The showcase 1 has interior lighting 53 (a collective term for interior lighting 53A on the left side and interior lighting 53B on the right side, the same below) and interior lighting 55 (a collective term for interior lighting 55A on the left side and interior lighting 55B on the right side, the same below) arranged inside the cabinet, and exterior lighting 51 (a collective term for exterior lighting 51A on the left side and exterior lighting 51B on the right side, the same below) arranged outside the cabinet. There is no limit to the range illuminated by exterior lighting 51 and interior lighting 53, 55, and for example, the illumination range of exterior lighting 51 may include the interior of the cabinet. The exterior lighting 51 is located outside the display room 12, and is attached, for example, to the underside 39b1 of the front end of the second protrusion 39b in the canopy 39. In this embodiment, the exterior lighting 51 is configured with an LED (Light Emitting Diode). The exterior lighting 51 emits light backward and downward. The exterior lighting 51 illuminates the inside of the display room 12.

[0029] The interior lighting includes interior upper wall lighting 53 and interior under-shelf lighting 55. The interior upper wall light 53 is a lighting device located inside the display chamber 12. The interior upper wall light 53 is attached to the inner upper wall 24 of the inner wall 20. In this embodiment, the interior upper wall light 53 is composed of an LED. The interior upper wall light 53 emits light downward. The interior upper wall light 53 illuminates the inside of the display chamber 12. In this embodiment, the interior upper wall light 53 is an example of an "interior light".

[0030] The interior under-shelf lights 55 are lighting devices located inside the display room 12. The interior under-shelf lights 55 are attached to the front of each display shelf 28. The interior under-shelf lights 55 are attached to the underside of each display shelf 28. The interior under-shelf lights 55 are lighting devices such as LEDs, fluorescent lights, or incandescent light bulbs. The interior under-shelf lights 55 emit light downward and backward. The interior under-shelf lights 55 illuminate the inside of the display room 12. In this embodiment, the interior under-shelf lights 55 are an example of "interior lighting".

[0031] The exterior lighting 51 is located forward of the front ends of each of the vertically arranged display shelves 28. In addition, the exterior lighting 51 is located above the topmost display shelf 28. Therefore, the space between the exterior lighting 51 and the front of each display shelf 28 and the front of the deck pan 26 is not blocked by other display shelves 28. Therefore, the exterior lighting 51 illuminates the upper surfaces of each display shelf 28 and the deck pan 26. In addition, the exterior lighting 51 illuminates the products displayed on each display shelf 28 and the deck pan 26. In this embodiment, the exterior lighting 51 is located forward of the front ends of each display shelf 28 and the front end of the deck pan 26.

[0032] The interior upper wall lighting 53 is located behind the front end of the topmost display shelf 28. Also, the interior upper wall lighting 53 is located above the topmost display shelf 28. Therefore, the space between the interior upper wall lighting 53 and the display shelf 28 below the topmost shelf is blocked by the topmost display shelf 28. Therefore, the interior upper wall lighting 53 mainly illuminates the top surface of the topmost display shelf 28. Also, the interior upper wall lighting 53 mainly illuminates the products displayed on the topmost display shelf 28.

[0033] Each of the internal under-shelf lights 55 is located behind the front end of the display shelf 28 one step lower than the display shelf 28 on which the internal under-shelf light 55 is provided. Therefore, the space between each internal under-shelf light 55 and each display shelf 28 that is two or more steps lower than the display shelf 28 on which the internal under-shelf light 55 is provided is blocked by the display shelf 28 that is one step lower than the display shelf 28 on which the internal under-shelf light 55 is provided. Therefore, the internal under-shelf light 55 mainly illuminates the upper surface of the display shelf 28 that is one step lower than the display shelf 28 on which the internal under-shelf light 55 is provided. Also, the internal under-shelf light 55 mainly illuminates the products displayed on the display shelf 28 that is one step lower than the display shelf 28 on which the internal under-shelf light 55 is provided.

[0034] As shown in FIG. 2, in this embodiment, the showcase 1 includes two exterior lighting 51 arranged in the width direction. The showcase 1 includes two interior upper wall lighting 53 arranged in the width direction. The showcase 1 includes four interior under-shelf lighting 55 arranged vertically, two by two in the width direction. In this embodiment, the positions occupied in the width direction by the left exterior lighting 51A, the left interior upper wall lighting 53A, and the four interior under-shelf lighting 55A on the left are the same. In this embodiment, the positions occupied in the width direction by the right exterior lighting 51B, the right interior upper wall lighting 53B, and the four interior under-shelf lighting 55B on the right are the same. In addition, the positions occupied by the left lighting 51A, 53A, and 55A do not overlap with the positions occupied by the right lighting 51B, 53B, and 55B. Therefore, the showcase 1 is divided into a predetermined number of lighting areas in the width direction, and the exterior lighting 51 and the interior lighting 53, 55 are arranged in each of the predetermined number of lighting areas divided in the width direction. In this embodiment, the number of divided lighting areas of the showcase 1 is two, and the showcase 1 is divided into two lighting areas: a left lighting area A and a right lighting area B. The exterior lighting 51A, the interior upper wall lighting 53A, and the interior under-shelf lighting 55A are arranged in the left lighting area A, and the exterior lighting 51B, the interior upper wall lighting 53B, and the interior under-shelf lighting 55B are arranged in the right lighting area B.

[0035] In this embodiment, the showcase 1 includes two lighting power supply devices 50A and 50B arranged side by side in the width direction. The lighting power supply devices 50A and 50B are arranged inside the canopy 39 at the top of the showcase 1. The lighting power supply devices 50A and 50B have a common circuit design, and it is desirable that the lighting power supply devices 50A and 50B are the same products having a common mechanical design such as a circuit board and a housing. In the width direction, the position occupied by the left lighting power supply device 50A entirely overlaps with the positions occupied by the left lighting devices 51A, 53A, and 55A. In addition, in the width direction, the position occupied by the right lighting power supply device 50B entirely overlaps with the positions occupied by the right lighting devices 51B, 53B, and 55B. In addition, the left lighting power supply device 50A is connected to the left lighting devices 51A, 53A, and 55A, respectively. The right lighting power supply device 50B is connected to the right lighting devices 51B, 53B, and 55B, respectively. That is, in the width direction, the entire positions occupied by each of the lighting power supply devices 50A and 50B overlap with the positions occupied by the lights 51A, 51B, 53A, 53B, 55A, and 55B connected to each of them. In other words, a lighting power supply device 50 is arranged in each of a predetermined number of lighting areas divided in the width direction, and one lighting power supply device 50 (one of the multiple lighting power supply devices 50) is connected to each of the lights (exterior lighting 51 and interior lighting 53 and 55) arranged in each lighting area. Each lighting power supply device 50 is arranged in the lighting area in which the connected exterior lighting 51 and interior lighting 53 and 55 are arranged. Thus, one lighting power supply device 50 that supplies power to the lighting 51, 53, and 55 in one lighting area is configured not to supply power to the lighting 51, 53, and 55 in other lighting areas.

[0036] With the above configuration, the length of the connection wiring from each of the lighting power supply devices 50A, 50B to each of the lighting devices 51A, 51B, 53A, 53B, 55A, 55B is optimized to be as short as possible, and heat dissipation from each of the lighting power supply devices 50A, 50B is appropriately performed. Therefore, it is possible to suppress power loss in each of the lighting power supply devices 50A, 50B. Furthermore, by arranging each of the lighting power supply devices 50A, 50B above the interior of the showcase 1, the influence of drainage leakage from the interior of the cabinet on each of the lighting power supply devices 50A, 50B is avoided, and the influence of condensation water is reduced. Therefore, malfunction, failure, and destruction of each of the lighting power supply devices 50A, 50B are suppressed.

[0037] The positions where the lighting power supply devices 50A and 50B are disposed are not limited to within each of a predetermined number of lighting regions divided in the width direction. Furthermore, the positions where the lighting power supply devices 50 are disposed are not limited to the canopy 39 or the top of the showcase 1. Each lighting power supply device 50 may be disposed on the back, side or bottom of the showcase 1, or all of the lighting power supply devices 50 may be disposed together in one location. Furthermore, when there are three or more lighting power supply devices 50, some of them may be disposed together in one location.

[0038] The number of divisions of the lighting area in the width direction of the showcase 1 is determined by the power capacity that the lighting power supply device 50 employed can supply, the power consumption of the exterior lighting 51 and the interior lighting 53, 55 to which each lighting power supply device 50 is responsible for supplying power, and the length (shape) of the showcase 1 in the width direction. In this embodiment, the case where the number of divisions of the lighting area is two has been described, but the number of divisions of the lighting area is not limited to two. Showcases generally have a lineup of multiple widths that differ depending on the needs of customers, that is, the size of the customer's store and the planned installation location, and in some cases, showcases with a custom width that is not in the lineup beforehand may be manufactured. According to this embodiment, it is possible to supply power to each of the lightings 51, 53, 55 of the showcase 1 having various lengths (shapes) in the width direction by increasing or decreasing the number of one type of lighting power supply device 50. Therefore, for showcases of any width, there is no need to provide separate power sources for the exterior lighting 51 and the interior lighting 53, 55, and there is no need to prepare multiple lighting power supply devices 50 with different designs (particularly circuit designs). Lighting control is possible with one lighting power supply device 50 provided for each specified width, so lighting control of the exterior lighting 51 and the interior lighting 53, 55 is possible while reducing new circuit design parts and design changes.

[0039] [1-1-3. Configuration of the operation display section] FIG. 3 is a diagram showing the configuration of the operation and display unit 40, and shows the operation and display unit 40 with the temperature display unit 41 turned on.

[0040] The operation display unit 40 has a panel 40a that is substantially rectangular and long in the left-right direction. The operation display unit 40 has a temperature display unit 41. The temperature display unit 41 is provided inside the panel 40a. The temperature display unit 41 mainly displays the temperature of the display room 12. In this embodiment, the temperature display unit 41 has a numerical value display unit 41a that is configured by arranging four 7-segment LEDs on the left and right. The temperature display unit 41 also has a unit display unit 41b that is lit by the emission of an LED provided on the back side of the panel 40a and displays the unit of the numerical value indicated by the numerical value display unit 41a. In this embodiment, the unit display unit 41b displays "°C" which indicates Celsius degrees.

[0041] The operation display unit 40 has an operation unit 45. The operation unit 45 is provided inside the panel 40a. The operation unit 45 accepts operations by a user. In this embodiment, the operation unit 45 has 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 this embodiment, the buttons 45a, 45b, 45c, and 45d are so-called momentary push switches. In this embodiment, the first button 45a corresponds to a "light switch."

[0042] The first button 45a is located at the left end of the operation unit 45. The first button 45a has the word "Lighting" printed on it. The second button 45b is located to the right of the first button 45a. The second button 45b has the word "Display Switching" printed on it. The third button 45c is located to the right of the second button 45b. The third button 45c has the word "Settings" printed on it. The fourth button 45d is located to the right of the third button 45c. The fourth button 45d has the word "Operation Switching" printed on it.

[0043] On panel 40a, a first mark 45a1 indicating a downward direction is marked above first button 45a. A second mark 45b1 indicating an upward direction is marked on second button 45b. In this embodiment, first mark 45a1 is an isosceles triangle with an apex angle pointing downward. Second mark 45b1 is an isosceles triangle with an apex angle pointing upward.

[0044] The temperature display unit 41 is located at the left end of the panel 40a. The operation unit 45 is located to the right of the temperature display unit 41.

[0045] [1-1-4. Control system configuration] 4 is a block diagram of the showcase 1, and shows the configuration 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.

[0046] 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 arithmetic processing device. The control device 90 includes the above-mentioned processor, a ROM (Read Only Memory), and a RAM (Random Access Memory), and controls the showcase 1 by executing a program using the processor. The control device 90 may include a memory (not shown). The memory is a storage device that non-volatilely stores the programs and data executed by the processor. 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.

[0047] The cooling system 31, the heater 31b, and the motor 33a are connected to the control device 90 as objects to be controlled. 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.

[0048] A temperature sensor 93 is connected to the control device 90. The temperature sensor 93 is a sensor that measures 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.

[0049] The operation display unit 40 is connected to the control device 90. The control device 90 controls the display of the temperature display unit 41. The control device 90 acquires operations performed on the operation unit 45.

[0050] 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 exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55.

[0051] [1-1-5. Configuration of lighting power supply unit] FIG. 5 is a diagram showing the configuration of the 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. The lighting power supply device 50 also includes an external power output unit 56 and an internal power output unit 57. In other words, both the external power output unit 56 and the internal power output unit 57 are provided in the housing of one lighting power supply device 50. A commercial AC power supply is connected to the lighting power supply device 50 via a control device 90. The control device 90 includes a relay 92, and the relay 92 is turned on and off under the control of the control device 90. The output side of the relay 92 is connected to the internal / external power supply input unit 52a of the power supply input unit 52 via the input side power line 61. The internal / external power supply input unit 52a is, for example, a connector or a terminal. In the lighting power supply device 50, the power supply input unit 52 is connected to the power supply circuit 58 via the power line 63. When the relay 92 is closed, the commercial AC power supply is connected from the input side power line 61 to the power supply circuit 58 .

[0052] The power supply circuit 58 is composed of an AC / DC converter and a voltage conversion circuit that converts AC current into DC current, 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 it.

[0053] The output side of the power supply circuit 58 is connected to the outside-compartment power output unit 56 via a power line 65. The outside-compartment power output unit 56 is connected to the outside-compartment light 51 via an outside-compartment power line 67. The outside-compartment power line 67 is a cable that is routed from the lighting power supply device 50 to the position of the outside-compartment light 51, and the outside-compartment power output unit 56 is a connector, terminal, or the like that is connected to the outside-compartment power line 67. A direct current output by the power supply circuit 58 flows to the outside-compartment light 51 via the outside-compartment power line 67.

[0054] Further, a light control circuit 59 is connected to the output side of the power supply circuit 58. The light control circuit 59 is connected to the interior power supply output unit 57 by a power supply line 66. The interior power supply output unit 57 is connected to each of the interior upper wall lighting 53 and the interior under-shelf lighting 55 via an interior power supply line 68.

[0055] 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 a signal input unit .

[0056] The dimming circuit 59 supplies power to the interior upper wall lighting 53 and the interior under-shelf lighting 55 based on the DC current output by the power supply circuit 58. The dimming circuit 59 has a dimming function. The dimming circuit 59 is, for example, a switching circuit that outputs a pulse current to each of the interior upper wall lighting 53 and the interior under-shelf lighting 55. The dimming circuit 59 adjusts the brightness of the interior upper wall lighting 53 and the interior under-shelf lighting 55 by PWM (Pulse Wave Modulation) control that changes the duty ratio of the pulse current. In this embodiment, the brightness of the interior upper wall lighting 53 and the interior under-shelf lighting 55, i.e., the dimming rate, is controlled by a signal input to the dimming circuit 59 from the signal line 73. The lighting power supply device 50 dims the interior upper wall lighting 53 and the interior under-shelf lighting 55 by switching the power output from the interior power output unit 57 by a signal input to the dimming circuit 59. Further, the turning on and off of each of the interior upper wall lighting 53 and the interior under-shelf lighting 55 is controlled by a signal input from a signal line 73 to the light control circuit 59.

[0057] The dimming rate here refers to the relative luminous flux (brightness) when the maximum luminous flux (brightness) of the interior upper wall lighting 53 and the interior under-shelf lighting 55 is taken as 100%. In this embodiment, the interior upper wall lighting 53 and the interior under-shelf lighting 55 are dimmed by PWM control, so the luminous flux when the dimming rate is 100% is equal to the luminous flux when the duty ratio of the pulse wave is 100%. The dimming rate may be configured to have a plurality of discrete steps, or may be configured to change continuously and without steps.

[0058] As described above, in this embodiment, in a configuration in which the paths for supplying power from the control device 90 to the lighting power supply device 50 are unified, it is possible to control the turning on and off of the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55. Furthermore, in this embodiment, the brightness of the interior upper wall lighting 53 and the interior under-shelf lighting 55 can be adjusted.

[0059] When a plurality of lighting power supply devices 50 are provided in the showcase 1 as in this embodiment, the power input sections 52 of each lighting power supply device 50 are connected in parallel to the control device 90. Also, the signal input sections 54 of each lighting power supply device 50 are connected in parallel to the control device 90. The control device 90 outputs the same power and signals to each lighting power supply device 50, interlocking the respective lighting power supply devices 50.

[0060] [1-2. Operation] FIG. 6 is an explanatory diagram showing the transition of the lighting states of the lights 51, 53, and 55.

[0061] When the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55 are turned off, the state of the showcase 1 is considered to be in a lights-off state ST1. When the showcase 1 is in the lights-off state ST1, the relay 92 of the control device 90 is opened, and the flow of power to the power supply circuit 58 is cut off.

[0062] When the showcase 1 is in the light-off state ST1, pressing the first button 45a causes the showcase 1 to transition to a full light-on state ST2.

[0063] When the showcase 1 is in the fully lit state ST2, the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55 are in a lit state. When the showcase 1 is in the fully lit state ST2, the relay 92 of the control device 90 is closed, and power is supplied to the exterior lighting 51 via the power supply circuit 58. In addition, the output power of the power supply circuit 58 is converted by the dimmer circuit 59 and supplied to the interior upper wall lighting 53 and the interior under-shelf lighting 55.

[0064] When the showcase 1 is in the full lighting state ST2, pressing the first button 45a causes the state of the showcase 1 to transition to the outside lighting state ST3.

[0065] When the showcase 1 is in the exterior lighting state ST3, the exterior lighting 51 is turned on, and the interior upper wall lighting 53 and the interior under-shelf lighting 55 are turned off. When the showcase 1 is in the exterior lighting state ST3, the relay 92 of the control device 90 is closed, and power is supplied to the exterior lighting 51 via the power supply circuit 58. On the other hand, in the exterior lighting state ST3, a signal transmitted from the control device 90 stops the output of the dimming circuit 59, and the supply of power to the interior upper wall lighting 53 and the interior under-shelf lighting 55 stops.

[0066] When the showcase 1 is in the exterior lighting state ST3, pressing the first button 45a causes the state of the showcase 1 to transition to the off state ST1.

[0067] In this way, in this embodiment, it is possible to switch between a lights-out state in which all of the lights 51, 53, 55 are turned off, an all-on state in which all of the lights 51, 53, 55 are turned on, and an outside-compartment light state in which only the outside-compartment light 51 is turned on, simply by pressing the first button 45a.

[0068] When the showcase 1 is in the full lighting state ST2, pressing the first button 45a for a long period of time causes the state of the showcase 1 to transition to the dimming setting state ST4.

[0069] When the showcase 1 is in the dimming setting state ST4, the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55 are turned on. 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 exterior lighting 51 via the power supply circuit 58. In addition, the output power of the power supply circuit 58 is converted by the dimming circuit 59 and supplied to the interior upper wall lighting 53 and the interior under-shelf lighting 55.

[0070] In the dimming setting state ST4, the dimming rate of the interior upper wall lighting 53 and the interior under-shelf lighting 55 can be adjusted by pressing the first button 45a or the second button 45b. When 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 interior upper wall lighting 53 and the interior under-shelf lighting 55. When 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 interior upper wall lighting 53 and the interior under-shelf lighting 55. The extent of the increase or decrease in the dimming rate may be increased if each button 45a, 45b is pressed many times, or may be increased if each button 45a, 45b is pressed for a long time.

[0071] When the showcase 1 is in the dimming setting state ST4, pressing the third button 45c transitions the state of the showcase 1 to the fully lit state ST2. The dimming rates of the interior upper wall lighting 53 and the interior under-shelf lighting 55 in the fully lit state ST2 are set to the dimming rates when the third button 45c is pressed in the dimming setting state ST4. That is, in the dimming setting state ST4, the showcase 1 is capable of setting the dimming rates of the interior upper wall lighting 53 and the interior under-shelf lighting 55 in the fully lit state ST2.

[0072] [1-3. Effects, etc.] As described above, in this embodiment, the lighting power supply unit 50 is a lighting power supply unit that supplies power to the lights 51, 53, 55 provided in the showcase 1, and is integrally equipped with a power input unit 52 that receives a supply of power, an outside power output unit 56 that supplies power to the outside lighting 51 of the showcase 1 based on the power input to the power input unit 52, and an inside power output unit that supplies power to the inside upper wall lighting 53 and the inside under-shelf lighting 55 of the showcase 1 based on the power input to the power input unit 52. This allows the power sources for the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55 to be consolidated into the lighting power supply device 50. This allows the configuration of the showcase 1 to be simplified.

[0073] As in this embodiment, the lighting power supply device 50 may be configured to have a signal input unit 54 to which a signal is input, and the power input unit 52 supplies power to each of the outside power supply output unit 56 and the inside power supply output unit 57 based on the power input to the power input unit 52, and the presence or absence of power output from at least one of the outside power supply output unit 56 or the inside power supply output unit 57 is switched based on the signal input to the signal input unit 54. This allows the lighting power supply device 50 to individually turn on and off at least one of the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55, without increasing the number of paths for receiving power from the showcase 1. This makes it possible to improve convenience without complicating the configuration of the showcase 1. Particularly in this embodiment, lighting power supply device 50 switches whether or not power is output from interior power output unit 57 depending on a signal input to signal input unit 54. As a result, assuming that exterior lighting 51, which illuminates the entire interior of display room 12, is turned on, the brightness inside the interior can be adjusted by turning on and off each of the interior lighting 53, 55.

[0074] As in the present embodiment, the power supply from at least one of the external power supply output unit 56 and the internal power supply output unit 57 may be switched according to a signal input to the signal input unit, and the external lighting 51, the internal upper wall lighting 53, and the internal under-shelf lighting 55 may be dimmed. As a result, the lighting power supply device 50 can dim the exterior lighting 51 or at least one of the interior upper wall lighting 53 and the interior under-shelf lighting 55 simply by receiving a signal from the showcase 1. This makes it possible to improve convenience without complicating the configuration of the showcase 1. Particularly in this embodiment, the lighting power supply device 50 can dim the interior upper wall lighting 53 and the interior under-shelf lighting 55. For this reason, on the premise that the exterior lighting 51 that illuminates the entire interior of the display room 12 is turned on, the interior upper wall lighting 53 and the interior under-shelf lighting 55 can be set to the minimum necessary brightness, thereby making it possible to save energy.

[0075] As in this embodiment, the showcase 1 may be provided with a plurality of lighting power supply devices 50, the showcase 1 may be divided in the width direction into a predetermined number of lighting areas, exterior lighting 51 and interior lighting 53, 55 may be arranged in each lighting area, and one lighting power supply device 50 may be connected to each of the exterior lighting 51 and interior lighting 53, 55 arranged in each lighting area. As a result, by providing pairs of the lighting power supply device 50 and the lighting devices 51, 53, and 55 to which each lighting power supply device 50 is connected in the number of different lighting areas, showcases 1 having different width dimensions can be configured. This simplifies the configuration of the showcase 1, and showcases 1 with different width dimensions can be easily provided.

[0076] As in the present embodiment, in the showcase 1, each lighting power supply device 50 may be configured to be arranged within an illumination area in which the connected exterior lighting 51 and interior lighting 53, 55 are arranged. As a result, the lighting power supply device 50 is disposed in the same lighting area as the connected lighting devices 51, 53, and 55, so the difference in configuration within each lighting area is reduced. Also, the wiring length from each lighting power supply device 50 to each connected lighting device 51, 53, and 55 can be shortened. This further simplifies the configuration of the showcase 1, and makes it easy to provide showcases 1 with different width dimensions.

[0077] As in this embodiment, the showcase 1 is equipped with a lighting power supply unit 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 operation unit 45 that accepts operations, and the control device 90 may be configured to change the setting of the dimming rate of at least one of the interior upper wall lighting 53, the interior under-shelf lighting 55 or the exterior lighting 51 that is lit, by operating the operation unit 45 while the interior upper wall lighting 53, the interior under-shelf lighting 55 or the exterior lighting 51 is lit. This makes it possible to adjust the dimming rate while checking the brightness of at least one of the interior lighting 53, 55 and the exterior lighting 51. This improves convenience. In particular, in this embodiment, the settings of the dimming rates of the interior upper wall lights 53 and the interior under-shelf lights 55 that are turned on can be changed by operating the operation unit 45. Therefore, assuming that the exterior lights 51 that illuminate the entire interior of the display room 12 are turned on, the brightness inside the cabinet can be adjusted by turning on and off the interior lights 53, 55.

[0078] As in the present embodiment, in the showcase 1, the operation unit 45 has a first button 45a, and the control device 90 may be configured to be able to execute switching to a state in which at least one of the interior upper wall lighting 53, the interior under-shelf lighting 55 and the exterior lighting 51 can be turned on, off, and the dimming rate can be set by operating the first button 45a. This allows at least one of the interior lights 53, 55 and the exterior light 51 to be switched on or off, and the dimming rate can be set, without performing any operation other than the first button 45a. This improves convenience and reduces the number of components mounted on the operation unit 45. In particular, in this embodiment, the interior lights 53, 55 can be switched on and off, and the dimming rate can be set, without performing any operation other than the first button 45a.

[0079] (Embodiment 2) Hereinafter, the second embodiment will be described with reference to Figures 7 and 8. Note that only the differences from the first embodiment will be described below, and overlapping descriptions will be omitted.

[0080] [2-1. Configuration] FIG. 7 is a diagram showing a configuration of a lighting power supply device 150 according to the second embodiment. In the lighting power supply device 150 according to the second embodiment, the dimming circuit 59 of the first embodiment is replaced with 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 between supplying and not supplying power to the in-fridge power output unit 57 in response to the input of the signal. As a result, the in-fridge lights 53, 55 are turned on or off, respectively. In this embodiment, the in-fridge lights 53, 55 are not dimmed, and can be in either a turned on or turned off state, respectively.

[0081] [2-2. Operation] FIG. 8 is an explanatory diagram showing the transition of the lighting states of the lights 51, 53, and 55 according to the second embodiment.

[0082] When the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55 are turned off, the state of the showcase 1 according to embodiment 2 is set to be in a lights-off state ST11. When the showcase 1 is in the lights-off state ST11, the relay 92 of the control device 90 is opened, and the flow of power to the power supply circuit 58 is cut off.

[0083] When the showcase 1 is in the light-off state ST1, pressing the first button 45a or the second button 45b causes the showcase 1 to transition to the full light-on state ST12.

[0084] When the showcase 1 is in the fully lit state ST12, the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55 are in a lit state. When the showcase 1 is in the fully lit state ST12, the relay 92 of the control device 90 is closed, and power is supplied to the exterior lighting 51 via the power supply circuit 58. In addition, the output power of the power supply circuit 58 is supplied to a circuit 159. A signal for supplying power to the interior power supply output unit 57 is input to the circuit 159 from the control device 90. Power is supplied from the circuit 159 to the interior upper wall lighting 53 and the interior under-shelf lighting 55.

[0085] When the showcase 1 is in the full lighting state ST12, pressing the second button 45b causes the showcase 1 to transition to the light-off state ST11. When the showcase 1 is in the full lighting state ST12, pressing the first button 45a causes the showcase 1 to transition to the outside lighting state ST13.

[0086] When the showcase 1 is in the exterior lighting state ST13, the exterior lighting 51 is turned on, and the interior upper wall lighting 53 and the interior under-shelf lighting 55 are turned off. When the showcase 1 is in the exterior lighting state ST3, the relay 92 of the control device 90 is closed, and power is supplied to the exterior lighting 51 via the power supply circuit 58. On the other hand, in the exterior lighting state ST13, a signal transmitted from the control device 90 stops the output of the circuit 159, and the supply of power to the interior upper wall lighting 53 and the interior under-shelf lighting 55 stops.

[0087] When the showcase 1 is in the outside-compartment lighted state ST13, pressing the second button 45b causes the showcase 1 to transition to the full lighted state ST12. When the showcase 1 is in the outside-compartment lighted state ST13, pressing the first button 45a causes the showcase 1 to transition to the off state ST11.

[0088] [2-3. Effects, etc.] As described above, in the present embodiment, the lighting power supply device 150 has a signal input unit 54 to which a signal is input, and the power input unit 52 supplies power to each of the outside power supply output unit 56 and the inside power supply output unit 57 based on the power input to the power input unit 52, and the presence or absence of power output from at least one of the outside power supply output unit 56 or the inside power supply output unit 57 may be switched based on the signal input to the signal input unit 54. This allows the lighting power supply device 150 to individually turn on and off at least one of the exterior lighting 51, the interior upper wall lighting 53, and the interior under-shelf lighting 55, without increasing the number of paths for receiving power from the showcase 1. This makes it possible to improve convenience without complicating the configuration of the showcase 1.

[0089] (Embodiment 3) Hereinafter, the third embodiment will be described with reference to Figures 9 and 10. Note that only the differences from the first and second embodiments will be described below, and overlapping descriptions will be omitted.

[0090] [3-1. Configuration] FIG. 9 is a diagram showing a configuration of a lighting power supply device 250 according to the third embodiment. The lighting power supply device 250 does not have a dimming circuit 59, and has two power supply circuits 58 connected in parallel to the control device 290. The power supply input section 252 of the lighting power supply device 250 has an outside power supply input section 252a and an inside power supply input section 252b. One power supply circuit 58 is connected to the control device 290 by one input side power line 61, the outside power supply input section 252a, and one power supply line 63. The other power supply circuit 58 is connected to the control device 290 by the input side power line 61, the inside power supply input section 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 outside power supply output section 56 is connected to the output side of one power supply circuit 58. The inside power supply output section 57 is connected to the output side of the other power supply circuit 58.

[0091] That is, the outside-compartment power supply input unit 252a is connected to the outside-compartment power supply output unit 56 via one power supply circuit 58. The inside-compartment power supply input unit 252b is connected to the inside-compartment power supply output unit 57 via the other power supply circuit 58. The outside-compartment power supply output unit 56 is connected to the outside-compartment power supply line 67. The inside-compartment lights 53, 55 are connected to the inside-compartment power supply output unit 57 via the inside-compartment power supply line 68.

[0092] The control device 290 is provided with a plurality of relays 92 connected to each of the input side power lines 61. In this embodiment, power is supplied from the control device 290 to the lighting power supply device 250 via two independent paths. The control device 290 also controls the turning on and off of each of the lights 51, 53, and 55 by disconnecting or connecting each of the two independent power paths by opening and closing the relays 92. Power is supplied to the outside power input unit 252a via one relay 92 provided in the control device 290. Power is supplied to the inside power input unit 252b via the other relay 92 provided in the control device 290. In this embodiment, one relay 92 corresponds to the "first switch". In this embodiment, the other relay 92 corresponds to the "second switch". In this embodiment, the control device 290 corresponds to the "external device".

[0093] When a plurality of lighting power supply devices 250 are provided in the showcase 1 as in this embodiment, the external power supply input units 252a of the respective lighting power supply devices 250 are connected in parallel to the control device 290. Also, the internal power supply input units 252b of the internal power supplies of the respective lighting power supply devices 250 are connected in parallel to the control device 290. The control device 290 outputs the same power and signals to each lighting power supply device 250, and links the respective lighting power supply devices 250.

[0094] [3-2. Operation] FIG. 10 is an explanatory diagram showing the transition of the lighting states of the lights 51, 53, and 55 according to the third embodiment. When the outside lighting 51 is turned off, the showcase 1 is in an outside lighting-off state ST21. When the outside lighting 51 is turned on, the showcase 1 is in an outside lighting-on state ST22. The outside lighting-off state ST21 and the outside lighting state ST22 are switched by pressing the second button 45b. That is, the control device 290 switches between opening and closing one of the relays 92 connected to the outside lighting 51 every time the second button 45b is pressed.

[0095] When each of the interior lights 53, 55 is off, the showcase 1 is in an interior lights off state ST23. When each of the interior lights 53, 55 is on, the showcase 1 is in an interior lights on state ST24. The interior lights off state ST23 and the interior lights on state ST24 are switched by pressing the second button 45b. That is, the control device 290 switches between opening and closing the other relay 92 connected to each of the interior lights 53, 55 every time the second button 45b is pressed. The interior lights off state ST23 and the interior lights on state ST24 are states independent of the exterior lights off state ST21 and the exterior lights on state ST22.

[0096] [3-3. Effects, etc.] As described above, in the present embodiment, the lighting power supply device 250 is connected to the control device 290 which supplies power to the lighting power supply device 250, and the power supply input unit 52 has an outside power supply input unit 252a connected to the outside power supply output unit 56, and an inside power supply input unit 252b connected to the inside power supply output unit 57, and power may be supplied to the outside power supply input unit 252a via one relay 92 provided in the control device 290, and power is supplied to the inside power supply input unit 252b via the other relay 92 provided in the control device 290. This simplifies the configuration of the lighting power supply device 250. Therefore, it is possible to simplify the configuration of the showcase 1 and prevent the lighting power supply device 250 from becoming complicated.

[0097] (Other embodiments) As described above, the first to third embodiments have been described as examples of the technology disclosed in this application. However, the technology in this disclosure is not limited to these, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the first to third embodiments to create new embodiments. Therefore, other embodiments will be exemplified below.

[0098] In the above embodiment, the showcase 1 has been described as an open-type showcase, but this is just one example. The showcase 1 may be, for example, a closed-type showcase having a transparent door that closes the display chamber 12 from the front.

[0099] In the above embodiment, the showcase 1 has been described as having two lighting power supply devices 50, 150, 250, but this is just an example. The showcase 1 may have any number of lighting power supply devices 50, 150, 250, which may be one or more.

[0100] In the above embodiment, the lighting 51, 53, 55 is described as being configured with LEDs, but this is just an example. The lighting 51, 53, 55 may be configured with, for example, fluorescent lamps or incandescent bulbs. However, by using LEDs as the lighting 51, 53, 55, energy saving is possible.

[0101] In the above embodiment, the exterior lighting 51 is described as being attached to the underside 39b1 of the front end of the second protrusion 39b in the canopy 39, but this is just one example. The exterior lighting 51 may be any device that is provided integrally with the showcase 1 and illuminates the display room 12 from outside the display room 12.

[0102] In the above embodiment, the interior upper wall lighting 53 and the interior under-shelf lighting 55 have been described as interior lighting, but this is just one example. For example, a configuration may be adopted in which only either the interior upper wall lighting 53 or the interior under-shelf lighting 55 is provided as the interior lighting. Furthermore, lighting other than the interior upper wall lighting 53 and the interior under-shelf lighting 55 may be provided in the display room 12 as the interior lighting.

[0103] In the above embodiment, the operation unit 45 is described as being provided in the operation display unit 40, but this is just one example. The operation unit 45 can be provided at any position in the showcase 1. Also, as long as the operation unit 45 is provided, the showcase 1 may be configured not to be provided with the panel 40a and the temperature display unit 41.

[0104] In the above embodiment, each of the buttons 45a, 45b, 45c, and 45d has been described as a momentary push switch, but this is just an example. For example, each of the buttons 45a, 45b, 45c, and 45d may be an alternate switch. Also, each of the buttons 45a, 45b, 45c, and 45d may be any switch such as a toggle switch or a rocker switch.

[0105] The characters printed on each of the buttons 45a, 45b, 45c, and 45d in the above embodiment are merely an example. Each of the buttons 45a, 45b, 45c, and 45d may have other characters or images printed thereon, or may not have any characters or images printed thereon. The first mark 45a1 and the second mark 45b1 may also have any characters or images printed thereon, or may not have any characters or images printed thereon.

[0106] The internal configuration of the lighting power supply devices 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 devices 50, 150, 250 may have a dimming circuit 59 or 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, the lighting power supply devices 50, 150 may not have the dimming circuit 59 or circuit 159 connected in series between the output side of the power supply circuit 58 and the internal power supply output unit 57. The lighting power supply devices 50, 150, 250 may be configured to switch between the output of power from one or both of the external power supply output unit 56 and the internal power supply output unit 57 according to a signal input to the signal input unit 54. Furthermore, the lighting power supply devices 50, 150, 250 may switch the supply of power from one or both of the external power output unit 56 and the internal power output unit 57 according to a signal input to the signal input unit 54, and may dim one or both of the external lighting 51 and the internal lighting 53, 55. That is, the lighting of either the external lighting 51 or each of the internal lighting 53, 55 may be controlled by a signal, or both may be controlled by a signal. Furthermore, both the external lighting 51 and the internal lighting 53, 55 may be dimmed by a single signal. In that case, the lighting is dimmed without distinction between the external lighting 51 and the internal lighting 53, 55. Furthermore, the components of the lighting power supply devices 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.

[0107] The explanatory diagrams shown in Figs. 6, 8, and 10 are merely examples, and the transitions of the lighting states of the lights 51, 53, and 55 and the operations for the transitions are not limited to these.

[0108] In the above embodiment, the control device 90, 290 has been described as having a relay 92 that switches between the presence and absence of power supply by opening and closing, but this is just one example. For example, the control device 90, 290 may have a relay other than a mechanical relay, such as a photorelay or a solid-state relay. Furthermore, the control device 90, 290 may be configured to switch between the presence and absence of power supply to the power supply input unit 52, 252 by a configuration other than a relay.

[0109] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, and the like can be made within the scope of the claims or their equivalents.

[0110] [Configuration supported by the above embodiment] The above embodiment supports the following configurations.

[0111] (Additional Note) (Technology 1) A lighting power supply device that supplies power to lighting provided in a showcase, the lighting power supply device integrally comprising a power input unit that receives a supply of power, an outside power output unit that supplies power to the outside lighting of the showcase based on the power input to the power input unit, and an inside power output unit that supplies power to the inside lighting of the showcase based on the power input to the power input unit. Here, "integrally provided" means that the power input unit, the external power output unit, and the internal power output unit are all mounted on one board, or, even if some or all of them are mounted on separate boards, all of those boards are stored in one housing or are mounted and fixed on one base so that they can be handled as one unit. And, it is sufficient that signals and power can be input and output from the outside to and from that one board, one housing, or one unit. This allows the power sources for exterior lighting and interior lighting to be consolidated into a single lighting power supply device, simplifying the configuration of the showcase in which the lighting power supply device is provided.

[0112] (Technology 2) A lighting power supply device as described in Technology 1, which is connected to an external device that supplies power to the lighting power supply device, and the power input unit has an outside power supply input unit connected to the outside power supply output unit and an inside power supply input unit connected to the inside power supply output unit, wherein power is supplied to the outside power supply input unit via a first switch provided in the external device, and power is supplied to the inside power supply input unit via a second switch provided in the external device. This simplifies the configuration of the lighting power supply device, thereby making it possible to simplify the configuration of the showcase in which the lighting power supply device is provided, while preventing the lighting power supply device from becoming complicated.

[0113] (Technology 3) A lighting power supply device as described in Technology 1 or 2, comprising a signal input unit to which a signal is input, the power supply input unit supplies power to each of the outside-compartment power output unit and the inside-compartment power output unit based on power input to the power supply input unit, and switches whether or not power is output from at least one of the outside-compartment power output unit or the inside-compartment power output unit based on the signal input to the signal input unit. This allows the lighting power supply device to individually turn on and off at least one of the exterior lighting and the interior lighting without increasing the number of paths for power received from the showcase, improving convenience without complicating the showcase configuration.

[0114] (Technology 4) The lighting power supply device according to Technology 3, in which the supply of power from at least one of the external power supply output unit or the internal power supply output unit is switched according to a signal input to the signal input unit, and the external lighting or the internal lighting is dimmed. This allows the lighting power supply device to dim at least one of the exterior lighting and the interior lighting simply by receiving a signal from the showcase, thereby improving convenience without complicating the structure of the showcase.

[0115] (Technology 5) A showcase comprising a plurality of lighting power supply devices according to any one of technologies 1 to 4, the showcase being divided into a predetermined number of lighting areas in the width direction, the exterior lighting and the interior lighting being respectively arranged in each of the lighting areas, and one of the lighting power supply devices being connected to each of the exterior lighting and the interior lighting arranged in each of the lighting areas. This allows a showcase with different width dimensions to be configured by providing sets of a lighting power supply device and an interior light to which each lighting power supply device is connected, for a number of different lighting areas. This simplifies the showcase configuration, and makes it easy to provide showcases with different width dimensions.

[0116] (Technology 6) The showcase according to Technology 5, wherein each of the lighting power supply devices is arranged within the lighting area in which the connected exterior lighting and interior lighting are arranged. As a result, the lighting power source is arranged in the same lighting area as the connected exterior lighting and interior lighting, so the difference in configuration within each lighting area is reduced. Also, the wiring length from each lighting power source to the connected exterior lighting and interior lighting can be shortened. This further simplifies the showcase configuration, making it easy to provide showcases with different width dimensions.

[0117] (Technology 7) A showcase comprising: a lighting power supply device as described in Technology 4; a control device that supplies power to the power input unit and outputs a signal to the signal input unit; and an operation unit that accepts operations, wherein the control device changes the setting of the dimming rate of at least one of the interior lighting that is turned on or the exterior lighting that is turned on by operating the operation unit while the interior lighting or the exterior lighting is turned on. This allows the user to adjust the dimming rate while checking the brightness of the interior lighting or exterior lighting, improving convenience.

[0118] (Technology 8) The showcase described in Technology 7, wherein the operating unit has a lighting switch, and the control device is capable of switching at least one of the interior lighting or the exterior lighting to a state in which it is possible to turn the lighting on or off, and to set a dimming rate, by operating the lighting switch. This allows the exterior lighting or interior lighting to be switched on or off, and the dimming rate to be set, without requiring any operation other than the lighting switch, improving convenience and reducing the number of parts mounted in the operation unit. [Industrial Applicability]

[0119] The present disclosure is applicable to showcases or power supply devices for lighting showcases. Specifically, the present disclosure is applicable to open-type showcases for stores, closed-type showcases having doors, and the like, or power supply devices for lighting thereof. [Explanation of symbols]

[0120] 1. Showcase 11 Cases 12 Exhibition room 13 Bottom wall 14 Side wall 15 Back wall 16 Upper Wall 16a Front end 17 Lower front wall 18 Pedestal 20 Inner wall 22 Compartment Wall 24 Inner upper wall 26 Deck Pan 28 Display shelf 30 Duct 31 Cooling System 31a Evaporator 31b Heater 32 Lower Duct 33 Blower 33a Motor 33b Impeller 34 Back duct 36 Upper Duct 37 Air outlet 38 Intake port 39 Canopy 39a First protrusion 39a1 front 39b Second convex part 39b1 Bottom surface 40 Operation display section 40a Panel 41 Temperature display section 41a Numeric display section 41b Unit display section 45 Operation section 45a 1st button (light switch) 45a1 First mark 45b Second button 45b1 Second mark 45c 3rd button 45d 4th button 50, 50A, 50 lighting power supply 51, 51A, 51B Exterior lighting 52 Power input section 52a Internal and external power input section 53, 53A, 53B Interior upper wall lighting (interior lighting) 54 Signal input section 55, 55A, 55B Interior under-shelf lighting (interior lighting) 56 External power output section 57 Internal power output section 58 Power supply circuit 59 Dimmer circuit 61 Input power line 63 Power line 65 Power line 66 Power line 67 Outside power supply line 68 Inside power supply line 71 Input signal line 73 Signal Line 90 Control device 92 Relay (1st switch, 2nd switch) 93 Temperature Sensor 99 Power supply 150 Lighting power supply equipment 159 Circuit 250 Lighting power supply 252 Power input section 252a External power input section 252b Internal power input section 290 Control Device A lighting area B lighting area

Claims

1. A lighting power supply device that supplies power to lighting provided in a showcase, a power input section for receiving power; An outside power supply output unit that supplies power to an outside lighting of the showcase based on the power input to the power input unit, and an inside power supply output unit that supplies power to an inside lighting of the showcase based on the power input to the power input unit are integrally provided. Power supply for lighting.

2. The lighting power supply device is connected to an external device that supplies power to the lighting power supply device; The power supply input unit has an outside power supply input unit connected to the outside power supply output unit and an inside power supply input unit connected to the inside power supply output unit, Power is supplied to the external power supply input unit via a first switch provided in the external device, The internal power supply input unit is supplied with power via a second switch provided in the external device.

2. The lighting power supply device according to claim 1.

3. A signal input unit to which a signal is input, The power input unit supplies power to each of the outside power output unit and the inside power output unit based on power input to the power input unit, The presence or absence of power output from at least one of the external power output unit or the internal power output unit is switched by a signal input to the signal input unit.

2. The lighting power supply device according to claim 1.

4. The supply of power by at least one of the external power output unit or the internal power output unit is switched by a signal input to the signal input unit, and the external lighting or the internal lighting is dimmed.

4. The lighting power supply device according to claim 3.

5. A lighting power supply device according to any one of claims 1 to 4, The showcase is divided into a predetermined number of illumination areas in a width direction, The exterior lighting and the interior lighting are respectively arranged in each of the lighting areas, The exterior lighting and the interior lighting arranged in each of the lighting areas are each connected to one of the lighting power supply devices. Showcase.

6. Each of the lighting power supply devices is arranged within the lighting area in which the exterior lighting and the interior lighting to which it is connected are arranged. The showcase according to claim 5.

7. The lighting power supply device according to claim 4 ; a control device that supplies power to the power supply input section and outputs a signal to the signal input section; An operation unit that accepts an operation, The control device changes the setting of the dimming rate of at least one of the inside lighting or the outside lighting while the inside lighting or the outside lighting is on by operating the operation unit, Showcase.

8. The operation unit has a lighting switch, The control device can switch at least one of the interior lighting or the exterior lighting to a state in which it is possible to turn on, turn off, and set a dimming rate by operating the lighting switch. The showcase according to claim 7.

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