JP2007252614A - Showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a showcase which can apply illumination with a proper illuminance and achieve proper cooling control according to inside cooling load even if it is attached with different kinds of illuminating devices. <P>SOLUTION: The showcase 1 including a cooling device which cools the inside of a showroom 11 and illuminating lamps 36 or the like, includes an illumination kind setting switch 25 which establishes the kind of the illuminating lamp 36 or the like and a control device 20 which controls the cooling device and the illuminating lamps 36 or the like, wherein the control device 20 changes the control of the cooling device according to the kind of the illuminating lamps 36 or the like set by the illumination kind setting switch 25. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a showcase that includes a cooling device that cools a display room and a lighting device that illuminates the display room and the vicinity of the display room.

  2. Description of the Related Art Conventionally, showcases installed in supermarkets, convenience stores, and the like are equipped with illumination lamps for illuminating the display room, the front of the showcase, and the like in a display room formed in the main body. The illuminating lamp is attached to the front surface of the lower surface of the canopy in the display room, or in the case where a plurality of shelves are installed on the front surface of the lower surface of the shelf (see Patent Document 1).

  In general, in a supermarket or the like, when it is out of business hours, the lighting of each showcase is turned off by centralized management or the like, and a so-called night setback control is executed for the cooling device of each showcase. In this night setback control, the operation control is corrected in a direction in which the set temperature of the discharge cold air is closed when the lighting switch is OFF and the preset temperature during opening the store where the lighting switch is ON is increased by a predetermined temperature (for example, 4 degrees). Is done.

Thereby, the operation control of the cooling device of the showcase is performed based on the energization control of the illuminating lamp, thereby reducing the operation rate of the cooling operation outside business hours and saving energy.
JP-A-7-143828

  On the other hand, conventional fluorescent lamps (φ32 tubes) having a diameter of 32 mm are often used as illumination lamps attached to showcases. On the other hand, recently, energy-saving fluorescent lamps (so-called T5 tubes having a distance between terminals of 5 mm) have been developed that consume less power than general fluorescent lamps and have low temperature dependence. FIG. 4 is a diagram showing the relationship of the temperature with respect to the illuminance of each fluorescent lamp. The energy-saving fluorescent lamp has a smaller decrease in illuminance particularly in a low-temperature region than a general fluorescent lamp, and is particularly suitable for a low-temperature showcase that is used by cooling the interior. In addition, the energy-saving fluorescent lamp is formed in a thin tube compared to a general fluorescent lamp, so when attached to the bottom of a shelf, the fluorescent lamp is difficult to see from the front of the showcase and is suitable for appearance. Moreover, in the general fluorescent lamp, it is possible to appropriately form an interval with the reflecting plate formed under the shelf that is hardly formed, and the reflection efficiency of illumination can be improved.

  Therefore, in the market, there are cases where a general fluorescent lamp can be arbitrarily replaced with an energy-saving fluorescent lamp, or an energy-saving fluorescent lamp can be replaced with a general fluorescent lamp, depending on a showcase installed in a store.

  However, as described above, each fluorescent lamp has a different amount of power consumption with respect to an applied voltage, and therefore a load for cooling in the cabinet is different. In other words, when changing from a general fluorescent lamp to an energy-saving fluorescent lamp in a low-temperature showcase, even with the same applied voltage, the energy-saving fluorescent lamp consumes less power, so the load on cooling inside the cabinet becomes smaller. When the same cooling control is performed, there is a problem that the cooling efficiency cannot be performed because the cooling efficiency is different.

  In addition, each fluorescent lamp has different illuminance with respect to the applied power, and also has different illuminance depending on the temperature inside the showcase to which the fluorescent lamp is attached. Therefore, the illuminance is changed by changing the fluorescent lamp to be attached.For example, in a low-temperature showcase, when changing from a general fluorescent lamp to an energy-saving fluorescent lamp, the illuminance is changed even with the same applied power. To rise. On the other hand, in a low-temperature showcase, when the energy-saving fluorescent lamp is changed to a general fluorescent lamp, the illuminance decreases even with the same applied power.

  Therefore, when the low temperature showcases with different fluorescent lamps are installed adjacent to each other, obviously the illuminance between the showcases is different, so that the same lighting effect cannot be obtained and the aesthetics are impaired. As a result, there is a problem that a difference occurs in the willingness to purchase the products displayed in the display room.

  Therefore, the present invention has been made to solve the conventional technical problems, and even when a different type of lighting device is attached, it can be illuminated with an appropriate illuminance and cooled in the cabinet. Provided is a showcase capable of realizing appropriate cooling control in accordance with the load on the vehicle.

  The showcase of the present invention comprises a cooling device for cooling the display room and an illumination device, and comprises an illumination type setting means for setting the type of the illumination device, and a control for controlling the cooling device and the illumination device. And the control device changes the control of the cooling device based on the type of the lighting device set by the lighting type setting means.

  The showcase according to a second aspect of the present invention is characterized in that, in the above invention, the control device is capable of adjusting a change width of control of the cooling device.

  The showcase of the invention of claim 3 comprises a cooling device for cooling the display room and an illumination device, and comprises an illumination type setting means for setting the type of the illumination device, the cooling device and the illumination device. And a control device that controls the power to be applied to the lighting device based on the type of the lighting device set by the lighting type setting means.

  The showcase of the invention of claim 4 is characterized in that, in the above invention, the control device is capable of adjusting a change width of electric power applied to the lighting device.

  According to the present invention, in a showcase comprising a cooling device for cooling the display room, and a lighting device, an illumination type setting means for setting the type of the lighting device, a control device for controlling the cooling device and the lighting device, Since the control device changes the control of the cooling device based on the type of the lighting device set by the lighting type setting means, the load for cooling in the warehouse is different for each lighting device. In addition, the control of the cooling device can be changed based on the type of the lighting device, and even when the type of the lighting device is changed, the cooling control is appropriately performed according to the load for cooling the inside by the lighting device. Can be performed.

  Therefore, for example, when the lighting device is changed to a lighting device that consumes less power and has a small load on cooling inside the cabinet, it is possible to reduce the operating rate of the cooling device by increasing the cooling set value of the cooling device, thereby saving energy. Can be realized.

  According to the invention of claim 2, in the above invention, since the control device is capable of adjusting the control change width of the cooling device, the control change width is changed according to the use of the showcase or the like. It becomes possible. Therefore, it becomes possible to appropriately control the operating rate of the cooling device for each use of the showcase, and it is also possible to realize energy saving.

  According to a third aspect of the present invention, in a showcase comprising a cooling device for cooling the display room and an illumination device, the illumination type setting means for setting the type of the illumination device, the cooling device and the illumination device are provided. And the control device changes the power applied to the lighting device based on the type of the lighting device set by the lighting type setting means. Even if it is different for each device, it becomes possible to change the applied power based on the type of the lighting device, and even if the type of the lighting device is changed, it is surely illuminated with a predetermined illuminance. It becomes possible.

  Therefore, for example, when the lighting device having a low temperature dependency in a low temperature region is changed to a large lighting device, it is possible to realize the same illuminance by increasing the applied power. As a result, even when showcases of different types of lighting devices are installed adjacent to each other, it is possible to illuminate with the same illuminance and to exhibit a uniform lighting effect.

  According to the invention of claim 4, in the above invention, since the control device can adjust the change width of the electric power applied to the lighting device, the control device can adjust the lighting device according to the use of the showcase. It is possible to change the change width of the applied power. Therefore, it becomes possible to illuminate with appropriate illuminance for each use of the showcase.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a showcase 1 to which the present invention is applied, and FIG. 2 is a longitudinal side view of the showcase 1 of FIG.

  The showcase 1 is a vertical open showcase installed in a store such as a supermarket, for example, and is attached to the side surface of the heat insulation wall 2 at the installation site, and the heat insulation wall 2 having a substantially U-shaped cross-section opening on the front surface. It is comprised from the heat insulating side plates 5 and 5.

  An inner wall 4 is attached to the inside of the heat insulating wall 2 of the showcase 1 with a predetermined interval, and a partition wall 40 is attached between the inner wall 4 and the heat insulating wall 2 with an interval therebetween. An inner layer duct 41 is formed between 4 and the partition wall 40, and an outer layer duct 42 is formed between the partition wall 40 and the heat insulating wall 2. In front of the lower end of the back inner wall 10 constituting the inner wall 4, a bottom plate 9 is attached with a gap for a duct between the bottom wall 2 </ b> A of the heat insulating wall 2, and the inside of the inner wall 4 and the bottom plate 9 is disposed inside. A display room 11 is provided.

  In the display chamber 11, the height and the mounting angle can be changed, and a pair of brackets 31 attached to a column (not shown) on the back of the display chamber 11 and a shelf plate 32 that constitutes a shelf device together with these brackets 31. It is constructed over several stages. A price rail 34 formed of hard synthetic resin is attached to the front edge of the shelf board 32, and the price rail 34 also serves as a decorative body for the shelf board 32. In addition, a predetermined interval is formed between the front wall of the shelf 32 and the price rail 34, and a guard 35 for preventing the product on the shelf 32 from falling is provided at the interval. It is attached. In addition, an illuminating lamp 36 for illuminating commodities displayed on the lower shelf 32 is disposed in front of the lower surface of each shelf 32. The illumination lamp 36 can use a plurality of types of illumination lamps, in this embodiment, general fluorescent lamps (φ32 tubes), so-called energy-saving fluorescent lamps (T5 tubes), and details will be described later. By inputting the type of illumination lamp used by the illumination type setting switch (illumination type setting means) 25 to the control device 20, the ON / OFF control of the cooling device and the applied power are controlled.

  An inner layer outlet 16 and an outer layer outlet 17 to which the honeycomb materials 13 and 14 are respectively attached are arranged in parallel at the upper edge of the front opening 12 of the heat insulating wall 2, and the inner layer outlet 16 and the outer layer outlet 17 are The inner layer duct 41 and the outer layer duct 42 communicate with each other. The inner layer outlet 16 and the outer layer outlet 17 are partitioned by a partition member 45 at the front end of the partition wall 40. On the other hand, an inner layer suction port 18 and an outer layer suction port 19 are arranged in parallel at the lower edge of the opening 12. An illuminating lamp 39 for illuminating the inside of the display chamber 11 from above is provided on the top inner wall 8 of the inner layer outlet 16 on the display chamber 11 side. As for the illuminating lamp 39, a plurality of types of illuminating lamps can be used in the same manner as the illuminating lamp 36, and the illuminating type setting switch (illuminating type setting means) 25 is used as will be described in detail later. By inputting the type of illuminating lamp to the control device 20, ON-OFF control and applied power of the cooling device are controlled.

  In addition, a panel 33 is attached to the front end of the ceiling wall 2B of the heat insulating wall 2, and an illuminating lamp reflecting plate 50 for attaching an illuminating lamp 37 located behind the panel 33 is provided inside the panel 33. It is attached. As for the illuminating lamp 37, similarly to the illuminating lamp 36, ON / OFF control and applied power of the cooling device are controlled according to the type of the illuminating lamp. Thereby, the inside of the display room 11 is illuminated by the illumination lamp 37 from the upper front. In addition, an air outlet outer wall 52 that extends downward and is positioned on the front side of the outer layer air outlet 17 and closes the front end of the outer layer duct 42 is attached to the front end of the top wall 2B of the heat insulating wall 2. In addition, this blower outlet outer wall 52 is formed with an engagement portion (not shown) whose lower end is folded back, and the front end of the honeycomb material 14 attached to the outer layer blower port 17 is supported by the engagement portion. The And on the upper surface of this blower outlet outer wall 52, the roll-up type night cover 51 is accommodated in the front end of the top wall 2B of the heat insulation wall 2.

  On the other hand, a plurality of blowers 27 and 28 (shown only in FIG. 3) corresponding to the inner layer duct 41 and the outer layer duct 42 are installed on the bottom wall 2 </ b> A of the heat insulating wall 2 at the lower rear portion of the bottom plate 9. A cooler (not shown) of the cooling device is vertically installed in the inner layer duct 41 behind the back inner wall 10. The compressor 26 (only FIG. 3 is illustrated), the condenser, the condenser blower 43 (only FIG. 3 is illustrated), etc., which constitute the refrigeration cycle together with this cooler, are provided separately from the showcase 1, for example, in a store It is provided in a machine room or the like, and the showcase 1 and the compressor 26 are connected by a refrigerant pipe (not shown). The compressor 26, the blowers 27 and 28, and the electromagnetic valve 29 for controlling the refrigerant flow rate in the refrigerant circuit are connected to the control device 20, and the cooling operation is controlled as will be described in detail later. To do.

  Next, the control device 20 will be described in detail with reference to FIG. FIG. 3 shows a block diagram of the control device 20 of the showcase 1. The control device 20 is constituted by a general-purpose microcomputer and includes a timer 21 as a time limit means. And the temperature sensor 22 for cooling control, the power switch 23, the illumination switch 24, and the said illumination kind setting switch 25 are connected to the input of this control apparatus 20. FIG. Further, the compressor 26, the blowers 27, 28, 43, the electromagnetic valve 29, and the lighting devices 36, 37, 39 are connected to the output of the control device 20. It is assumed that the temperature sensor 22 is attached to, for example, the ceiling in the display room 11, and the lighting devices 36, 37, and 39 are connected via electronic ballasts 46, 47, and 48, respectively.

  Further, the illumination type setting switch 25 in the present embodiment is provided, for example, on a control panel (not shown) provided in the main body of the showcase 1, and in this embodiment, general fluorescent lamps are used as the illumination lamps 36, 37, 39. (Φ32 tube), so-called energy-saving fluorescent lamp (T5 tube) can be used, so that the above two types can be set.

  The operation of the showcase 1 of the embodiment of the present invention with the above configuration will be described. First, when the power switch 23 is turned on, the control device 20 activates the compressor 26 and the fans 27 and 28. When the compressor 26 is started, the cooler vertically provided in the inner layer duct 41 exhibits a cooling action. The cool air exchanged with the cooler is raised in the inner layer duct 41 by the operation of the blower 27 and blown out from the inner layer outlet 16 toward the inner layer suction port 18. Then, the cool air sucked from the inner layer suction port 18 is accelerated by the blower 27 again. Thereby, a cold air curtain is formed in the front opening 12.

  On the other hand, when the blower 28 corresponding to the outer layer duct 42 is operated, the protective airflow in the outer layer duct 42 is raised in the outer layer duct 42 and blown out from the outer layer outlet 17 toward the outer layer suction port 19. Then, the air sucked from the outer layer suction port 19 is accelerated by the blower 28 again. As a result, a protective air curtain is formed outside the cool air curtain in the front opening 12, and a front and rear double air curtain is formed in the opening 12. A part of the inner cool air curtain is circulated in the display chamber 11 to cool the display chamber 11.

  The control device 20 continuously operates the blowers 27 and 28, and executes ON-OFF control for the compressor 26 and the condenser blower 43 based on the output of the temperature sensor 22, for example, starting at + 5 ° C. and stopping at + 3 ° C. To do. As a result, the inside of the display chamber 11 is cooled to an average refrigeration temperature of + 4 ° C. In this embodiment, the temperature in the display chamber 11 is controlled only by the ON / OFF control of the compressor 26 and the condenser blower 43. However, the present invention is not limited to this. The temperature control may be performed also by performing the opening degree control by the valve 29.

  On the other hand, the illumination lamps 36, 37, and 39 in the present embodiment have different illuminance with respect to the applied power depending on the type of illumination used, and the amount of heat generated with respect to the applied power differs, so that the load on the internal cooling differs. FIG. 4 shows the relationship of the illuminance with respect to the internal temperature when a constant power is applied to each illuminating lamp, and FIG. 5 shows the power consumption when a constant illuminance is realized by each illuminating lamp.

  According to this, in general fluorescent lamps, when the applied power is a predetermined value, the illuminance tends to decrease as the internal temperature decreases, and when the internal temperature is equal to or higher than the predetermined temperature, The illuminance tends to increase. The energy-saving fluorescent lamp has a lower tendency to decrease the illuminance as the internal temperature becomes lower when the applied power is a predetermined value similar to the above general tendency, and even if the internal temperature is high, It is located in the range of standard illuminance.

  Therefore, when a general fluorescent lamp is used in a chilled temperature range or a freezing temperature range, it is necessary to increase the applied power greatly as compared with an energy saving fluorescent lamp in order to secure a reference illuminance. Even when the energy-saving fluorescent lamp is used, the illuminance tends to decrease particularly in the freezing temperature range. Therefore, even in such a case, it is necessary to increase the applied power.

  As shown in the figure, when LEDs are used, the temperature dependency is small compared to general fluorescent lamps and energy-saving fluorescent lamps, and when applied power is used for general fluorescent lamps and energy-saving fluorescent lamps. Even if it is reduced, it is possible to ensure a predetermined illuminance. However, when the internal temperature becomes equal to or higher than the predetermined temperature, there is a tendency to lower than the reference illuminance. Therefore, in order to ensure the reference illuminance, it is necessary to increase the power applied to the LED according to the internal temperature. There is.

  In addition, since the illumination intensity with respect to the internal temperature of each illumination lamp in FIG. 4 changes with the cooling capacity of a showcase itself, a magnitude | size, installation environment, etc., since it does not show fixed temperature and illumination intensity, in FIG. Numerical values are not shown.

  On the other hand, the diagram shown in FIG. 5 shows the power consumption of each illuminating lamp when the internal temperature in this embodiment, that is, a constant illuminance at + 4 ° C. is realized. In addition, what is shown in white is the power consumption required for the inverter, and what is indicated by hatching is the power consumption required for light and heat. According to this, in the case of a general fluorescent lamp, it can be seen that each power consumption is large and the heat generation amount is large as compared with an energy-saving fluorescent lamp or LED. For this reason, the load due to the heat generated by the illumination lamp has a great influence on the interior cooling. The energy-saving fluorescent lamp also has the same tendency as compared with the LED, that is, each power consumption amount is large and the heat generation amount tends to be large, and the load due to the heat generation of the illumination lamp with respect to the interior cooling is greatly affected.

  Therefore, when each illumination lamp 36 and the like is replaced from a general fluorescent lamp with an energy-saving fluorescent lamp, if the cooling control and applied power are the same as those of the general fluorescent lamp, it becomes brighter than the reference illuminance and cools inside the cabinet. Therefore, even if the cooling set temperature is raised, the inside of the display chamber 11 can be similarly cooled. Similarly, there is a similar tendency when the energy-saving fluorescent lamp is replaced with an LED.

  As shown in FIG. 6, in consideration of the amount of heat generated when a constant reference illuminance is realized at a predetermined cooling temperature in each lighting lamp, the cooling set temperature is 1 ° C. in an energy saving fluorescent lamp as compared with a general fluorescent lamp. Even in the case where the LED is raised by ˜2 ° C. and the LED is raised by 1 ° C.-2 ° C. as compared with the energy-saving fluorescent lamp, the same cooling capacity can be secured.

  Therefore, the control device 20 performs inverter control on the applied power of each of the lighting devices 36, 37, and 39 and corrects the set temperature of the cooling temperature based on the tendency of each lighting type. Hereinafter, description will be given with reference to the flowcharts of FIGS.

  FIG. 7 shows temperature adjustment control and dimming control according to the type of illumination of each illumination lamp 36 and the like. In this case, in step S1, the control device 20 determines whether the illumination type set by the illumination type setting switch 25 is a general fluorescent lamp or an energy saving fluorescent lamp. Proceed to step S2. In step S <b> 2, the control device 20 acquires a reference set temperature stored in advance in the storage unit of the control device 20 and uses it as temperature adjustment control data. Then, it progresses to step S3 and the control apparatus 20 acquires the light control setting for general fluorescent lamps previously stored in the memory | storage means of the control apparatus 20, and makes it data for light control. In step S4, the temperature adjustment control is output based on the temperature adjustment control data, and the compressor 26, the fans 27, 28, 43, and the electromagnetic valve 29 are controlled based on the temperature adjustment control. In step S5, the control device 20 outputs the dimming control to the electronic ballasts 46, 47, and 48 such as the illuminating lamps 36 based on the dimming control data. The electric power applied to 36 etc. is inverter-controlled.

  On the other hand, if the control device 20 determines in step S1 that it is an energy-saving fluorescent lamp, the control device 20 proceeds to step S6. In step S6, the control device 20 acquires the reference set temperature and the energy-saving fluorescent lamp correction value stored in advance in the storage means of the control device 20, and the energy-saving fluorescent lamp correction value, specifically, the reference set temperature. Specifically, a correction value for increasing the cooling set temperature from 1 ° C. to 2 ° C. is added to obtain temperature adjustment control data. Note that the correction range for the energy-saving fluorescent lamp can be arbitrarily changed.

  Then, it progresses to step S7 and the control apparatus 20 acquires the light control setting for energy saving fluorescent lamps previously stored in the memory | storage means of the control apparatus 20, and makes it data for light control. Thereafter, the process proceeds to step S4, where the temperature adjustment control is output based on the temperature adjustment control data, and the compressor 26, the fans 27, 28, 43, and the solenoid valve 29 are operated based on the temperature adjustment control. Control. In step S5, the control device 20 outputs the dimming control to the electronic ballasts 46, 47, and 48 such as the illuminating lamps 36 based on the dimming control data. The electric power applied to 36 etc. is inverter-controlled.

  Thereby, the control apparatus 20 adds the correction value for energy-saving fluorescent lamps to the reference set temperature that is applied when a general fluorescent lamp is used, so that the temperature adjustment control data for increasing the cooling set temperature in the cabinet is obtained. Based on this, the compressor 26, the fans 27, 28, 43, the electromagnetic valve 29, and the like of the cooling device are controlled for operation. For this reason, compared with the case where a general fluorescent lamp is used, it becomes possible to raise cooling setting temperature from 1 degreeC to 2 degreeC, and can reduce the operating rate of a cooling device. Thereby, energy saving can be realized and the running cost can be reduced.

  On the other hand, when each of the illumination lamps 36 and the like is replaced with an ordinary fluorescent lamp from an energy saving fluorescent lamp and is set to the ordinary fluorescent lamp by the illumination type setting switch 25, the standard setting applied when the ordinary fluorescent lamp is used. Data for temperature adjustment control based on the temperature is acquired, and based on this, the compressor 26, the fans 27, 28, 43, the electromagnetic valve 29, and the like of the cooling device are controlled. For this reason, compared with the case where an energy-saving fluorescent lamp is used, it is possible to lower the cooling set temperature from 1 ° C. to 2 ° C. As a result, it is possible to reduce the internal cooling accompanying the increase in the amount of heat generated by the general fluorescent lamp. The cooling device can be operated in consideration of the load. As a result, it is possible to avoid the disadvantage of poor cooling.

  As described above, it is possible to appropriately perform the cooling control according to the load for the cooling in the cabinet which is different for each type of the illumination lamp, and it is possible to realize an appropriate cooling operation.

  As described above, the correction value for the energy-saving fluorescent lamp can arbitrarily change the correction range. Therefore, the control change range can be adjusted according to the use of the showcase 1 or the like. Is possible. Therefore, it becomes possible to appropriately control the operation rate of the cooling device for each application of the showcase 1, and this also makes it possible to realize energy saving.

  Further, the control device 20 selects one of the dimming setting for the general fluorescent lamp and the dimming setting for the energy-saving fluorescent lamp based on the illumination type selected by the illumination type setting switch 25, and performs dimming control. Data is output to the electronic ballast 46 and the like of each illumination lamp 36 and the like based on the data, and the applied power to each illumination lamp 36 and the like is controlled to adjust the applied power according to the internal temperature and the type of illumination. Thus, even when the type of illumination lamp is changed, it is possible to reliably illuminate with a predetermined reference illuminance.

  Therefore, for example, when changing from an energy-saving fluorescent lamp with little temperature dependency in a low temperature range to a large general fluorescent lamp, it is possible to realize the same illuminance by increasing the applied power. As a result, even if showcases with different types of illumination lamps are installed adjacent to each other, it is possible to illuminate with the same illuminance and to exhibit a uniform illumination effect.

  In the present embodiment, the control device 20 can arbitrarily change the dimming setting value for each illuminating lamp, specifically, the range of change in the power applied to each illuminating lamp. It is possible to adjust.

  Therefore, it becomes possible to change the change width of the electric power applied to the illumination lamp 36 etc. according to the use etc. of the showcase 1, and it is possible to illuminate with appropriate illumination for every use of the showcase 1 Become.

  In the present embodiment, the dimming control as described above is performed by setting all types of illumination lamps at once with the illumination type setting switch 25 for the illumination lamps 36, 37, and 39. Inverter control of the power applied to each illumination lamp 36, 37, 39 is performed, but in addition to this, the type of illumination lamp is set for each illumination lamp 36, 37, 39 by the illumination type setting switch. Based on the setting, inverter control of the applied power may be performed for each illumination lamp. Thereby, even if a plurality of types of illumination lamps are used in one showcase, the applied power can be adjusted for each illumination lamp, so the illuminance as a whole is uniform. It becomes possible.

  FIG. 8 shows temperature adjustment control corresponding to the type of illumination of each illumination lamp 36 and the like. In this case, in step S11, the control device 20 determines whether the illumination type set by the illumination type setting switch 25 is a general fluorescent lamp or an energy saving fluorescent lamp. Proceed to step S12. In step S12, the control device 20 acquires a reference set temperature stored in advance in the storage unit of the control device 20, and uses it as temperature adjustment control data. Thereafter, the process proceeds to step S13, and the control device 20 outputs the temperature adjustment control based on the temperature adjustment control data, and operates the compressor 26, the blowers 27, 28, 43, and the electromagnetic valve 29 based on the temperature adjustment control. Control.

  On the other hand, if the control device 20 determines in step S11 that it is an energy saving fluorescent lamp, the control device 20 proceeds to step S14. In step S14, the control device 20 acquires the reference set temperature and the energy-saving fluorescent lamp correction value stored in advance in the storage means of the control device 20, and the energy-saving fluorescent lamp correction value, specifically, the reference set temperature. Specifically, a correction value for increasing the cooling set temperature from 1 ° C. to 2 ° C. is added to obtain temperature adjustment control data. Note that the correction range for the energy-saving fluorescent lamp can be arbitrarily changed.

  Thereafter, the process proceeds to step S13, and similarly to the above, based on the temperature adjustment control data, the temperature adjustment control is output, and based on this, the compressor 26, the blowers 27, 28, 43, and the solenoid valve 29 are operated. Control.

  Even in this case, the control device 20 adds the correction value for energy-saving fluorescent lamp to the reference set temperature applied when the general fluorescent lamp is used, thereby increasing the cooling set temperature in the cabinet. Based on this data, the compressor 26, the fans 27, 28, 43, the solenoid valve 29, etc. of the cooling device are controlled based on this data. For this reason, compared with the case where a general fluorescent lamp is used, it becomes possible to raise cooling setting temperature from 1 degreeC to 2 degreeC, and can reduce the operating rate of a cooling device. Thereby, energy saving can be realized and the running cost can be reduced.

  On the other hand, when each of the illumination lamps 36 and the like is replaced with an ordinary fluorescent lamp from an energy saving fluorescent lamp and is set to the ordinary fluorescent lamp by the illumination type setting switch 25, the standard setting applied when the ordinary fluorescent lamp is used. Data for temperature adjustment control based on the temperature is acquired, and based on this, the compressor 26, the fans 27, 28, 43, the electromagnetic valve 29, and the like of the cooling device are controlled. For this reason, compared with the case where an energy-saving fluorescent lamp is used, it is possible to lower the cooling set temperature from 1 ° C. to 2 ° C. As a result, it is possible to reduce the internal cooling accompanying the increase in the amount of heat generated by the general fluorescent lamp. The cooling device can be operated in consideration of the load. As a result, it is possible to avoid the disadvantage of poor cooling.

  As described above, it is possible to appropriately perform the cooling control according to the load for the cooling in the cabinet which is different for each type of the illumination lamp, and it is possible to realize an appropriate cooling operation.

  As described above, the correction value for the energy-saving fluorescent lamp can arbitrarily change the correction range. Therefore, the control change range can be adjusted according to the use of the showcase 1 or the like. Is possible. Therefore, it becomes possible to appropriately control the operation rate of the cooling device for each application of the showcase 1, and this also makes it possible to realize energy saving.

  Note that the types of illumination applied to the present invention are not limited to two types of general fluorescent lamps and energy-saving fluorescent lamps as described above, and the same effect can be achieved even if LEDs are added thereto. . As for the type of illumination lamp, if the illuminance with respect to the applied power is different, or if a plurality of types of illumination lamps having different loads on the interior cooling are used because the calorific value with respect to the applied power is different, the present invention is used. Can be applied.

It is a perspective view of a showcase to which the present invention is applied. It is a vertical side view of the showcase of FIG. It is a block diagram of the control apparatus of a showcase. It is a figure which shows the relationship of the illumination intensity with respect to the temperature in a store | warehouse | chamber when fixed electric power is applied to each illumination light. It is a figure which shows the amount of power consumption when fixed illumination intensity is implement | achieved by each illumination light. It is a figure which shows the cooling preset temperature with respect to each illumination lamp. It is a flowchart figure which shows temperature adjustment control according to the kind of illuminations, such as each illumination lamp, and light control. It is a flowchart figure which shows temperature adjustment control according to the kind of illuminations, such as each illumination lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Showcase 2 Heat insulation wall 11 Display room 12 Opening 20 Control apparatus 21 Timer 22 Temperature sensor 23 Power switch 24 Illumination switch 25 Illumination type setting switch 26 Compressor 27, 28 Blower 29 Solenoid valve 36, 37, 39 Illumination lamp 46, 47 48 electronic ballast

Claims (4)

In a showcase comprising a cooling device for cooling the display room and a lighting device,
A lighting type setting means for setting the type of the lighting device;
A control device for controlling the cooling device and the lighting device,
The showcase, wherein the control device changes the control of the cooling device based on the type of the lighting device set by the lighting type setting means.   The showcase according to claim 1, wherein the control device is capable of adjusting a change width of control of the cooling device. In a showcase comprising a cooling device for cooling the display room and a lighting device,
A lighting type setting means for setting the type of the lighting device;
A control device for controlling the cooling device and the lighting device,
The showcase, wherein the control device changes the power applied to the lighting device based on the type of the lighting device set by the lighting type setting means.   The showcase according to claim 3, wherein the control device is capable of adjusting a change width of electric power applied to the lighting device.

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