CN101438909B

CN101438909B - Showcase

Info

Publication number: CN101438909B
Application number: CN2008101818479A
Authority: CN
Inventors: 桶谷哲也; 金井涉; 卷岛芳树
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 2007-11-22
Filing date: 2008-11-24
Publication date: 2011-08-10
Anticipated expiration: 2028-11-24
Also published as: ATE516728T1; JP2009127941A; KR20090053728A; KR101075436B1; US20090135587A1; CA2643876A1; EP2062509A1; JP5140392B2; EP2062509B1; CN101438909A

Abstract

An object is to provide a showcase in which appropriate illumination is realized by an LED illumination apparatus having a high durability against turning ON/OFF and capable of securing a predetermined illumination intensity even under an environment at a low temperature and in which dew condensation caused in a door frame can effectively be suppressed. The showcase (1) in which the inside of a display chamber (5) constituted in a main body (2) so as to display commodities is illuminated by the LED illumination apparatus (15) includes a glass door (7) which openably closes an opening of the display chamber (5), and a metal door frame (45) which is provided in the main body so as to constitute an opening edge of the display chamber and on which the glass door abuts, and the LED illumination apparatus (15) is provided on the surface of the door frame (45) on the side of the display chamber (5) in a heat exchange relation.

Description

Showcase

Technical field

The present invention relates to the showcase of LED lighting device throwing light in the showroom of displaying commodity.

Background technology

At present, in the supermarket or convenience store use a kind of showcase, it constitutes the showroom in the body that the heat insulating box by front openings constitutes, utilize to rotate freely glass door and open and close and closes this front openings freely.The door of this showcase is in order moderately to keep closed condition, on the opening edge of the body of this butt metal system doorframe is installed, and the gasket seal (ガスケ Star ト) of built-in magnet is installed on the edge portion of the open side of door.Side with opening is the center, rotating freely, the door of pivot suspension descends in off position, closely contact with the metal system frame member of open side by the magnetic force that is arranged on the magnet on the door,, under such state, keep closed condition to prevent the leakage of cold air effectively.

Because aforesaid doorframe is connected with outside, and is close in the showroom that is cooled to set point of temperature, so the temperature difference in external temperature and the showroom causes the dew that condenses easily.Owing on described peristome, adhere to dew, therefore cause or got wet in the ground etc. of being provided with of showcase the showroom in, perhaps move many inconvenience that dew is splashed because of the switch door.

Therefore,, bury electric heater underground, by often to the switch on face of the glass reveal that heats doorframe of this electric heater at the metal system doorframe inner face of the opening edge of the body of door butt in the past for the anti-possible trouble that terminates in of the phenomenon of the dew that condenses.

On the other hand, in the showroom,, use fluorescent lamp or LED matrix illumination as lighting device in order to throw light on to being displayed in inner commodity.

Patent document 1: Japanese kokai publication hei 5-34047 communique

In addition, the fluorescent lamp or the LED matrix that use as lighting device throw light on, because of just heating of energising itself.In utilizing cooling device cooling showroom and in the showcase that uses,, therefore, have the lighting device that generates heat because of turning on light, make the problem of the cooling effectiveness reduction that utilizes cooling device because this lighting device is arranged in the showroom.

So, proposed according to having or not client's illumination apparatus to carry out methods such as break-make (ON/OFF) or adjusting illumination.But present employed fluorescent lamp owing to being therefore to switch to low temperature after the on-state in the showroom that is used as cooling space, realize that the illumination of stipulating just needs the regular hour.In addition, owing to carry out break-make continually, therefore also shorten the life-span of self.

In addition, the electric heater that the heating doorframe is used is irrelevant with the break-make that is arranged on the lighting device in the showroom, is in energising for a long time.Therefore the heat that this electric heater sends exists the problem of the cooling effectiveness that reduces refrigerating plant owing to also can pass in the showroom.

Summary of the invention

The present invention provides a kind of showcase in order to solve above-mentioned technical task, though its by anti-in break-make and can guarantee that under low temperature environment the LED lighting device of regulation illumination realizes suitable illumination, and can suppress the dew that condenses on the doorframe effectively.

Showcase of the present invention is characterised in that: its with the LED lighting device to be formed in the body and the showroom of display commodity in throw light on, have switching close freely the showroom opening glass door and constitute the opening edge of showroom and be arranged on metal system doorframe on the body, the glass door butt, the LED lighting device is arranged on heat exchange relationship on the face of showroom side of doorframe.

The showcase of a second aspect of the present invention is characterized in that: except that foregoing invention, have the electric heater of the face of the glass reveal that heats doorframe, when the LED lighting device is turned off the light, switch on to electric heater.

The showcase of a third aspect of the present invention is characterized in that: except that the first aspect of the invention described above, the LED lighting device has electric heater, when the LED lighting device, to this electric heater energising.

According to the present invention, with the LED lighting device to be formed in the body and the showroom of display commodity in throw light on and the showcase that constitutes, have: the glass door that opens and closes the opening of closing the showroom freely, and constitute the opening edge of showroom and be arranged on the body, the metal system doorframe of glass door butt, because the LED lighting device is arranged on heat exchange relationship on the face of showroom side of doorframe, so heat of LED lighting device because of itself heating of energising, can pass on the face of showroom side of doorframe, and can suppress effectively because of the dew that on doorframe, condenses easily of the temperature difference in outer temperature and the showroom.

Thus, can avoid getting wet in the showroom or the unfavorable condition such as ground that is provided with of showcase takes place owing to the dew that condenses on the doorframe.And, by the on-off action of glass door, can avoid taking place unfavorable condition generations such as splashing of dew.

Invention according to second aspect, on the basis of foregoing invention, electric heater with face of the glass reveal that heats doorframe, by when the LED lighting device is turned off the light, switching on to electric heater, even can not utilize under the situation of the heat heating doorframe that itself sends turning off the light because of the LED lighting device, also can be according to the turning off the light of this LED lighting device, to the electric heater energising of the face of the glass reveal of heating doorframe, thereby suppress the dew that condenses on the doorframe effectively.

In addition, invention according to the third aspect, on the basis of the invention of above-mentioned first aspect, the LED lighting device has electric heater, by when this LED lighting device is turned off the light, switching on to this electric heater, even under the situation that can not utilize the heat heating doorframe that itself sends because of turning off the light of LED lighting device, according to turning off the light of this LED lighting device, switch on to electric heater, thereby on the face of the showroom side of the heat transferred doorframe that electric heater is produced, also can suppress the dew that condenses on the doorframe effectively.

Description of drawings

Fig. 1 is suitable for showcase front view of the present invention;

Fig. 2 is the profile that amplify the part of the showcase of Fig. 1;

Fig. 3 is the side view of lighting device;

Fig. 4 is the partial enlarged drawing of Fig. 3;

Fig. 5 is the partial enlarged drawing of substrate;

Fig. 6 is the electrical diagram of control device;

Fig. 7 is the circuit diagram of expression force-feeling sensor's connection;

Fig. 8 is the local amplification profile as the showcase of other embodiment.

Description of reference numerals

1 showcase; 2 heat insulating boxes (body); 5 showrooms; 6 front openings; 7 glass doors; 8 pillars; 11 force-feeling sensors; 15 LED lighting devices; 16 LED illuminating members; 17 LED elements; 18 substrates; 20 installing plates; 21 retaining members; 24 sidewalls; 30 lampshades; 31 terminal boards; 32 LED lighting control section, 33 power supplys; 34 people feel a little; 35 power supply terminals; 36 output contact terminals; 37 common contact terminals; 40 heat-barrier materials; The 40A hollow bulb; 41 electric heaters (resistance); 45 doorframes; 46 illumination installation portions; 48 illuminance transducers; 49 on-off switches (door open-close detection apparatus); 50 indoor temperature transmitters; 51 temperature display parts (temperature indicating device); 52 electric heaters; 53 light switches; 54 converters; 55 first connecting portions; 56 second connecting portions; 57 the 3rd connecting portions; 58 DC power source units; 60 short-circuit lines.

The specific embodiment

Below, with reference to accompanying drawing in detail embodiments of the present invention are described in detail.Fig. 1 is the front view that is suitable for showcase 1 of the present invention, and Fig. 2 is the local amplification profile of showcase 1.Showcase 1 is arranged on local low-temperature showcase such as supermarket or convenience store, and its body is made of the heat insulating box (thermal wall) 2 of front openings.

This heat insulating box 2 by the steel plate system outer container 3 of front openings, keep at interval and be installed in this outer container 3 and the not shown interior case of the steel plate system of front openings or hard resin system and foam filled polyurathamc heat-barrier material between outer container 3 and interior case constitute.

In this, constitute showroom 5 in the case, and close case in this freely by 7,7,7 switchings of a plurality of (being 3 in the present embodiment) rotary type glass door.This

glass door

7,7,7 constitutes the whole inside to the lower end, the upper end that can have an X-rayed from the showroom 5 front openings 6.This glass door 7 constitutes by constituting a framework 7A of limit portion and being installed in this framework 7A and can having an X-rayed inner glass plate 7B.Be provided with gasket seal 7C in the back of framework 7A.

On front openings 6 limits of heat insulating box 2, be provided with a plurality of (therefore establish 2 owing to be provided with 3 doors 7 this moment) pillar 8 from top to bottom with predetermined distance.This pillar 8 by the heat-barrier material 40 of the column of extending up and down, be connected to the front of this heat-barrier material 40 and be provided with and constitute the doorframe 45 of front of pillar 8 and the illumination installation portion 46 that is provided with in the mode of carrying out heat exchange with this doorframe 45 constitutes.

Heat-barrier material 40, it is formed with substantial middle place that is positioned at the cross section and the hollow bulb 40A that extends up and down.Doorframe 45, itself and the back side (gasket seal 7C) butt of the glass door 7 that opens and closes the front openings 6 close heat insulating box 2 freely, and make by the good metal material of thermal conductivity.In addition, illumination installation portion 46 is the same with doorframe 45, and the metal material good by thermal conductivity constitutes, and is set to the back butt of its front end and doorframe 45, its end is rearward crooked along the hollow bulb 40A of heat-barrier material 40, and also rearward only extends with prescribed level than the rear wall of heat-barrier material 40.And the rear end of this illumination installation portion 46 only tilts and forms to the central rears of pillar 8 with predetermined angular.

In addition, as narrating in the back, because this illumination installation portion 46 can be emitted the heat that is transmitted by retaining member 21 effectively, and this heat is passed on the doorframe 45 that is provided with in the mode of carrying out heat exchange with this illumination installation portion 46, therefore can constitutes by a plurality of (be 2 this moment) tabular component with each inwall (side) butt of the hollow bulb 40A of heat-barrier material 40.Reference numeral 47 expressions are filled in the heat-barrier material that is centered on the space that constitutes by illumination installation portion 46 and doorframe 45 back among the figure.

According to described structure, each glass door 7 closely contacts with the doorframe 45 that constitutes pillar 8 fronts with front openings 6 limit portions by the gasket seal 7C of its back, closes in the showroom 5.

In addition, 5 the back side and front portion in the showroom uprightly are provided with shelf pillar 10 from top to bottom, and putting on the shelf at this shelf pillar 10 is provided with several layers shelf 9.On this shelf pillar 10, be formed with a plurality of connecting holes with predetermined distance, set up the connecting hole of shelf 9 by change, can change the height and position of shelf 9.

In the present embodiment, corresponding with the rear of described

pillar

8,5 the back side and front portion are provided with shelf pillar 10 in the showroom.Therefore, each shelf 9 is corresponding with the rear of each glass door 7 and set up several layers respectively.

In addition, 5 internal upper parts are provided with cooler and pressure fan as cooling device R (only shown in Figure 6) in the showroom.Cooler constitutes cooling devices with other not shown compressor and the condenser etc. of being provided with, and this cooling device constitutes so-called freeze cycle.By the cold air forced circulation that this cooler produces being arrived showroom 5, make the temperature that is cooled to stipulate in the showroom 5 with pressure fan.

Then, with reference to Fig. 2 to Fig. 5, elaborate the LED lighting device 15 that is located in the showroom 5.Fig. 3 is the side view of LED lighting device 15, and Fig. 4 is the partial enlarged drawing of Fig. 3, and Fig. 5 is the partial enlarged drawing of substrate 18.

In the present embodiment, in the inboard, opening 6 limit of the heat insulating box 2 that constitutes body, specifically be 5 forward corner and pillar 8 in the showroom, be provided with LED lighting device 15 from top to bottom.This LED lighting device 15 by a plurality of LED illuminating members 16, keep this LED illuminating member 16 and be installed in the retaining member 21 of inboard, opening 6 limit of heat insulating box 2 and lampshade 30, lid member 61 constitute.

As shown in Figure 5, LED illuminating member 16 is made of the substrate 18 that disposes a plurality of LED elements 17 and a plurality of electric heater (resistance) 41, and this substrate 18 is fixed on the good installing plate of thermal conductivity 20.Substrate 18 extends along its length and constitutes, and with predetermined distance a plurality of LED elements 17 is installed on this substrate 18.LED element 17 in the present embodiment is SMD White LED elements.

In addition, each LED element 17 is one group with the quantity of regulation, is connected on the connector 42 of being located at the end, and is same, and each electric heater 41 is one group with the quantity of regulation also, in parallel with LED element 17 and be connected on the connector 42.In addition, on installing plate 20, form screw hole, retaining member 21 for screw stays.

Retaining member 21 is that the front openings 6 of relative heat insulating box 2 is extended and the good hardware of thermal conductivity that constitutes from top to bottom.The section of retaining member 21 is roughly " コ " shape, and its upper and lower end parts is closed by lid member 31.This retaining member 21 is installed with the antetheca back butt of the forward corner of illumination installation portion 46 that constitutes pillar 8 or formation heat insulating box 2.

That is, the sidewall 24 relative with peristome " コ " shape roughly retaining member 21 is connected on the illumination installation portion 46 of the pillar 8 that rearward extends and form, and is fixed by not shown screw.On this sidewall 24, be formed with a plurality of slotted holes 26 that extend more longways from top to bottom.This slotted hole 26 is to overlap with the screw hole of the installing plate 20 of described LED illuminating member 16 and by screwing togather fixing hole, the installation site up and down (direction of arrow along Fig. 4 can change the installation site) that only depends on the length dimension of this slotted hole 26 can change LED illuminating member 16.

In addition,, be formed with the holding section 27 that is used for clip lamp cover 30, and be formed with the rear of the heat-barrier material 40 that is positioned at pillar 8 at antetheca at the rear wall of the retaining member 21 that is roughly " コ " shape, and the reflection board 23 that rearward bends with predetermined angular.

Lampshade 30 is made by the colourless transparent material with light transmission that is used for from the outside covers in the retaining member 21, and utilizes dismountings such as decorating screw to be installed in freely on the retaining member 21.

According to above-mentioned structure, the installation steps of LED lighting device 15 are described.At first, retaining member 21 is installed in the inboard, opening 6 limit of heat insulating box 2.In the present embodiment because LED lighting device 15 is installed in the both sides of each glass door 7, so this retaining member 21 is installed in preceding two bights of showroom 5 and the illumination installation portion 46 of the pillar 8 that rearward extends on.In addition, because pillar 8 is arranged between the

glass door

7,7, back-to-back so two retaining members 21 are mounted to that its each sidewall 24 clips the illumination installation portion 46 that is located at pillar 8.In addition, the LED lighting device 15 that is located at forward corner being installed as the irradiates light that is produced by LED element 17 shines to 5 inboards, showroom.

In addition, the installing plate 20 that LED element 17 is installed is attached on the sidewall 24 of retaining member 21, and makes the screw hole of installing plate 20 and slotted hole 26 overlap and fix with screw.Thus, the substrate of LED lighting device 15 18 is by the installing plate 20 that constitutes with the good material of thermal conductivity and the sidewall 24 of retaining member 21, is arranged in the mode of heat exchange on the face of showroom 5 sides of doorframe 45.As mentioned above, owing to be fixed with the illumination installation portion 46 of the pillar 8 of sidewall 24, only tilt and form to the central rear of pillar 8, so the LED element 17 of this LED lighting device 15 and be not parallel to front openings 6, but be partial to showroom 5 slightly and be set up with predetermined angular.

In the present embodiment, a plurality of (4) aforesaid LED illuminating member 16 is installed on the retaining member 21.This LED lighting device 15 also can be made of the single led illuminating member 16 that constitutes across the top and bottom of front openings 6, and can change upper-lower position by installing with slotted hole 26.But, by constituting, not only can reduce production costs by as shown in this embodiment a plurality of LED illuminating members 16, can also improve processing.

In addition, the reflecting plate 23 of retaining member 21 is arranged on a side of the glass door 7 of LED illuminating member 16.In addition, in the open side of retaining member 21, the lampshade 30 that is used for covering from the outside LED illuminating member 16 is installed.The end dismounting engaging freely of the holding section 27 of the open side of this lampshade 30 by being formed on retaining member 21 and reflecting plate 23, lampshade 30 is not roughly parallel to glass door 7 thus, but is partial to 5 inboards, showroom slightly.

The control device C of the showcase 1 of present embodiment then, is described with reference to Fig. 6.Control device C in the present embodiment is made of universal microcomputer, light switch 53, the perception that is connected with described LED lighting device 15 at its input side whether have the people near the illuminance transducer 48 of the force-feeling sensor 11 of this showcase 1, the illumination (ambient illuminance) that is used to detect in the shop that this showcase 1 is installed etc., be used to detect the door on-off switch (door open-close detection apparatus) 49 of open and-shut mode of each glass door 7 and the indoor temperature transmitter 50 that is used to detect temperature in the showroom 5.

Illuminance transducer 48 is installed in the position of the influence of the shadow of the peripheral machine of end face etc. for example, outside that is not vulnerable to body 2.In the present embodiment, owing to be provided with a plurality of (3) glass door 7, therefore door on-off switch 49 is corresponding with each glass door 7, from the front, begins to be provided with successively on-off switch 49A, a 49B, 49C from the glass door 7 in left side.To narrate in the back about force-feeling sensor 11.

In addition,, be connected with the cooling device R that constitutes by aforesaid compressor, pressure fan etc., and be connected with the LED element 17 and the electric heater 41 of LED lighting device 15 respectively at the outlet side of control device C.LED element 17 is by converter (イ Application バ-タ) 54 be connected on the control device C.And, at the outlet side of control device C, be connected with and show and to be arranged on the upper front of body 2 and to be used to show temperature in the showroom 5 and the temperature display part (temperature indicating device) 51 of present operation mode.

At this, shown in the circuit diagram of Fig. 7, force-feeling sensor 11 is connected on the LED lighting control section 32 that constitutes control device C by the terminal board 31 that the force-feeling sensor connects usefulness.Force-feeling sensor 11 is arranged on the center upper portion front of heat insulating box 2 for example etc. and locates, its inside have force-feeling sensor's its own power source 33 and perception whether have the people near and the people that opens and closes feels a little 34.On power supply 33, be connected to power supply terminal 35, and feel a little 34 both sides, be connected with output contact terminal 36 and common contact terminal 37 the people.

On the other hand, on the terminal board of being located on showcase 1 body 31, be provided with first connecting portion 55, second connecting portion 56 and the 3rd connecting portion 57.On first connecting portion 55, be connected with the power supply and the LED lighting control section 32 of showcase 1 base side; On second connecting portion 56, be connected with LED lighting control section 32; On the 3rd connecting portion 57, be connected with the power supply of showcase 1 base side by the light switch 53 of being located at showcase 1 body.In addition, the LED element 17 of LED lighting device 15 is in parallel with LED lighting control section 32, and is connected by DC power source unit 58 on the power supply of showcase 1 base side.

According to above-mentioned structure, force-feeling sensor 11 power supply terminal 35 is connected on first connecting portion 55 of terminal board 31, and force-feeling sensor 11 output is connected on second connecting portion 56 of terminal board 31 with contact terminal 36, and force-feeling sensor 11 common contact terminal 37 is connected on the 3rd connecting portion 57 of terminal board 31.Thus, light switch 53 in body 2 one sides is to connect under (ON) state, people by force-feeling sensor 11 feels a little 34 break-make (ON/OFF), can be to the control of switching on of the LED lighting control section 32 of LED lighting device 15, and, can carry out break-make (ON/OFF) control to LED lighting device 15 thus based on force-feeling sensor 11 break-make (ON/OFF).In addition, after force-feeling sensor 11 was in connection (ON), when turn-offing (OFF) again, LED lighting control section 32 was turned off moment of (OFF) from force-feeling sensor 11, for example postponed tens of seconds through the stipulated time, turn-offed LED lighting device 15.

In addition, each

terminal

35,36,37 this force-feeling sensor 11 is not connected under the state of terminal board 31, promptly under the state of pulling down force-feeling sensor 11, carry out short circuit between second connecting portion 56 by short-circuit line shown in Figure 7 60 being connected terminal board 31 and the 3rd connecting portion 57, thereby utilize break-make (ON/OFF) control of the light switch 53 of being located at body 2, can carry out break-make (ON/OFF) control of LED lighting device 15.Therefore, under the situation that is connected to force-feeling sensor 11, feel a little 34 break-make (ON/OFF) control by the people who is located in the force-feeling sensor 11, can carry out break-make (ON/OFF) control of LED lighting device 15, and under the situation that is not connected to force-feeling sensor 11, by using short-circuit line 60 each connecting portion short circuit of terminal board 31, only utilize the light switch 53 of body 2 one sides, can carry out break-make (ON/OFF) control of LED lighting device 15.

According to above structure, the illumination control of the LED lighting device 15 of the showcase 1 in the present embodiment is described.Control device C at first detects the illumination of (on every side) in the shop that is provided with this showcase 1 by illuminance transducer 48, and according to the definite maximal illumination that produces by the LED lighting device 15 that is arranged on showroom 5 of this illumination.In the present embodiment, the maximal illumination in the showroom 5 is defined as detecting according to degree sensor 48 illumination of the big regulation of ambient illuminance that obtains.

In addition, control device C is connected under the state of terminal board 31 aforesaid force-feeling sensor 11, according to described force-feeling sensor's 11 perception have the people near showcase 1 promptly the someone enter the signal of exporting in the showcase 1 predetermined distance scope, utilize LED lighting control section 32 to carry out the energising of the LED element 17 of LED lighting device 15.Therefore, as principle, when force-feeling sensor 11 do not perceived the people near the time, the LED element 17 of LED lighting device 15 is in non-energising, is in the state of turning off the light.

At this moment, whether the lighting control section 32 of control device C has an approaching perception of people according to force-feeling sensor's 11, electrical current/voltage to the LED element 17 of LED lighting device 15 is controlled, gradually illumination is heightened from the state of turning off the light, reached the maximal illumination of determining according to above-mentioned ambient illuminance at last.

Thus, owing to whether the people is arranged near coming illumination to heighten gradually each the LED element 17 in the illumination showroom 5 according to force-feeling sensor's 11 perception of being located at showcase 1, therefore compare with the situation that the LED element 17 of the high regulation illumination of unexpected usefulness throws light on, can make client's eyes adapt to the brightness of light gradually, the uncomfortable situation of making us such as avoid dazzling the eyes

At this, be fixed on the light that the LED element 17 of each illuminating member 16 of the sidewall 24 of retaining member 21 sends, along partially laterally (with glass door 7 almost parallels) irradiation of rear, both sides of glass door 7.In addition, in the present embodiment, as mentioned above, opening 6 limits of the relative heat insulating box 2 of the light that LED element 17 sends tilt and form to rear (showroom 5 one sides) a little.Thus, because the light that LED irradiation unit 15 sends can shine the front portion that is erected at the shelf 9 in the showroom 5, therefore the light that the high LED element 17 of directive property sends can be radiated at the front portion of shelf 9.Thus, can illuminate the commodity of the especially forefront on the shelf 9 well, the front of the commodity that throw light on effectively.Therefore, can attempt to improve the illuminating effect and the display effect of commodity.

In this case, the LED lighting control section 32 of control device C is owing to can make each LED element 17 improve illumination gradually from the state of turning off the light, and with according to around illumination and in the definite maximal illumination illumination showroom 5, therefore, adapt with the brightness around waiting in the shop that is provided with this showcase 1, with the brightness that the LED element 17 of the LED lighting device 15 of determining showcase 1 produces, can avoid and on every side the inharmonious sense of illumination.

Thus, can utilize LED lighting device 15, can realize improving illuminating effect with the suitable illumination showroom 5 of throwing light on effectively.

In addition, it is approaching that the LED lighting control section 32 of control device C has not detected the people according to force-feeling sensor 11, and this begins constantly through after for example tens of seconds of stipulated time certainly, stops to 17 energisings of the LED of described LED lighting device 15 element, turns off the light in the pass.

Thus, the operating cost that causes surging because therefore control device C, can suppress that LED lighting device 15 quilts light up as the illumination more than required by, just throwing light on bright illumination with LED lighting device 15 during near showcase 1 as the people.

On the one hand, aforesaid force-feeling sensor 11 perception whether have the people approaching during, perhaps from not perceiving the approaching moment of people, during the stipulated time, LED lighting device 15 is by under the state of lighting, and the LED lighting control section 32 of control device C is performed illumination.

In this performance illumination, control device C is by the electrical current or the voltage of the LED illumination component 17 of control LED lighting device 15, and this LED lighting device 15 is periodically carried out its illumination in above-mentioned maximal illumination with the bright or dark control of turning off the light and changing between the state.In addition, in the present embodiment, as dark state, being meant the state of turning off the light, but being not limited thereto, also can be the dark illumination with certain minimal illumination (the non-state of turning off the light).

Thus, the illumination performing effect that LED lighting device 15 produces can be improved, the effect of peddling of commodity in the showroom 5 can be improved.

In addition, be under the illuminating state at aforesaid LED lighting device 15, when opening any glass door 7, (49A～49C) opens detection according to the door on-off switch 49 of the switching that detects this glass door 7, control device C controls the electrical current or the voltage of the LED element of the LED lighting device 15 that showroom 5 parts of being closed by this glass door 7 are thrown light on, and the illumination of this LED lighting device 15 is turned down.In addition, detect corresponding glass door 7 according to door on-off switch 49 and closed, control device C returns to original illumination with the illumination of LED lighting device 15, is illuminated to above-mentioned maximal illumination this moment.

For example, from the front, when the glass door 7 of the leftmost side is opened, door on-off switch 49A detects this glass door 7 and is opened, the control device C LED lighting device 15 that will be provided with in view of the above corresponding to this glass door 7, specifically be 5 front from the showroom, be arranged on the left side forward corner LED lighting device 15 illumination and clip the LED lighting device 15 that this glass door 7 is arranged on opposition side with this LED lighting device 15, promptly from the front, be set in place in the illumination of the LED lighting device 15 in the left side of the pillar 8 in left side and turn down.

Thus, when door on-off switch 49 detects glass door 7 and is opened, because control device C turns down the illumination of LED lighting device 15, therefore can alleviate the LED lighting device 15 that covered by the glass door 7 of closing high light, because of the degree that directly enters client's eyes of opening of glass door 7 to the place ahead of showroom 5 irradiation.

Thereby, even client is opening glass door 7, also can suppress to reveal and according to forwards light from the LED lighting device 15 of illumination in the showroom 5, shine client and the generation that produces unfavorable conditions such as dazzling the eyes.

In this case, control device C can make the illumination gradual change of the on-off action generation of following glass door 7, also can transition.By gradual change illumination, can relax the inharmonious sense that showcase 1 integral body produces the performance illumination.On the other hand, by transition illumination, the photograph that can separate in early days disappears is covered by glass door 7 because of opening always of glass door 7 is to the light in 5 the place aheads, showroom, enters client's eyes and the sense of discomfort that produces.

Then, to this showcase 1 when trial run or under the test/trial running mode when safeguarding etc., especially do not describing in illumination control with the LED lighting device 15 under the non-cold pattern of cooling operation.In principle, control device C controls the illumination of aforesaid LED lighting device 15.At this moment, control device C remains on high temperature value with indoor temperature in advance in order to protect the LED element 17 of the LED lighting device 15 that generates heat because of energising, supposes that this indoor temperature reaches to cause the obviously aging or high temperature of fault equally likely possibility of LED lighting device 15.In addition, this high temperature value can be set arbitrarily.

In addition, control device C if this temperature reaches described high temperature value, just controls the electrical current/voltage of the LED element 17 of LED lighting device 15 according to the indoor temperature transmitter 50 detected temperature of being located in the showroom 5, and illumination is turned down.

In the present embodiment, illuminance setting in about 50% of maximal illumination.This illumination is not to be defined in this, but according to the detection case of high temperature value, LED lighting device 15 is turned off the light, and can turn down the illumination of LED lighting device 15 step by step yet.

Thus, can reduce the heats that the LED element 17 itself because of energising LED lighting device 15 produces.Therefore, in test/trial running mode or non-cold pattern isotype, by still uncolled to the state of stipulating chilling temperature in showroom 5, LED lighting device 15 illumination reach bright degree, can avoid LED element 17 because of this LED lighting device 15 to be heated singularly and produce itself abnormal conditions aging or fault.

In addition, control device C uses the temperature display part 51 of the body 2 that is arranged on showcase 1 to carry out the demonstration of current test/trial running mode or the demonstration of non-cold pattern according to the illumination of turning down (or turning off the light) LED lighting device 15 based on the detection of this high temperature value.

Thus, allow the user understand and current LED lighting device 15 is controlled to be low-light (level), but not fault causes.

Even aforesaid LED lighting device 15 is carried out illumination control, compare with the present fluorescent lamp that uses as lighting device, the LED element 17 that constitutes this LED lighting device 15 is anti-in the operation of break-make (ON/OFF), even and under low temperature environment, can guarantee the illumination stipulated therefore can realize suitable illumination control according to break-make (ON/OFF) control.

In addition, owing to than the obvious length of fluorescent lamp, therefore do not need the replacing operation of lighting the service life of LED element 17.Therefore do not need standing replacing parts, perhaps do not need because of changing numerous and diverse operations such as offal treatment that lighting produces.

On the one hand, carry out the control of electrical current/voltage, under the situation that LED element 17 is switched on, be provided with substrate 18 heatings of this LED element 17 by LED element 17 to aforesaid LED lighting device 15.This caloric value becomes big greatly with the energising amount.Therefore, in the time of in utilizing LED element 17 illumination showrooms 5, this heat is delivered to the good installing plate 20 of thermal conductivity that substrate 18 is installed and is equipped with on the sidewall 24 of the good retaining member 21 of the thermal conductivity of this installing plate 20.

In addition, be provided with owing to this sidewall 24 connects with metal system doorframe 45, so the heat that LED lighting device 15 produces is delivered to the doorframe 45 that is used for heat exchange and is provided with.Because this doorframe 45 is connected with outside, so the temperature difference in outside air temperature and the showroom 5 causes the dew that condenses easily.But, as mentioned above,, therefore suppress the dew that condenses on the doorframe 45 effectively because the heat that can utilize LED lighting device 15 to send heats doorframe 45.

Thus, the dew that can avoid condensing on the doorframe 45 is got wet in the showroom 5 or the unfavorable condition such as ground that is provided with of showcase 1 takes place.And, by the on-off action of glass door 7, can avoid bad phenomenon such as dew splashes to take place.

In addition,, be used to heat doorframe 45, can successfully realize being equipped with the heat radiation of the substrate 18 of this LED element 17, and can prevent or suppress LED lighting device 15 aging or faults by the heat that LED element 17 is sent because of energising.And then the cooling effectiveness that can reduce thus in the showroom 5 worsens.

In aforesaid illumination (illumination) control, if do not carry out illumination in 15 pairs of showrooms of LED lighting device 5, then the heat that can not send the energising of LED element 17 is used in the doorframe 45 of heating.

Therefore, in the present embodiment, when the LED of LED lighting device 15 element 17 no powers, control device C switches on to each electric heater 41 that is arranged on together on the substrate 18 with this LED element 17.

Thus, even can not heat under the situation of doorframe 45 with the heating of himself because of turning off the light of LED lighting device 15, heat by the electric heater 41 that will send because of energising is delivered on the face of showroom 5 sides of doorframe 45, can suppress the dew that condenses on the doorframe 45 effectively.

Thereby, even under the situation that LED lighting device 15 throws light on or turns off the light,, therefore need not as in the past, in doorframe 45, bury electric heater 41 especially underground owing to can switch on to the LED element 17 or the electric heater 41 that constitute LED lighting device 15.Particularly,, therefore when utilizing LED lighting device 15 to throw light on, do not need to switch on to heater in addition, can reduce operating cost owing to the face that heats glass door 7 sides of doorframe 45 because of the energising of LED element 17.

In the above-described embodiments, the electric heater 41 of heating doorframe 45 is arranged on the substrate 18 that constitutes LED lighting device 15, and heating to be carrying out the face of showroom 5 sides of the doorframe 45 that heat exchange method is provided with this substrate 18, but is not limited to this, also can be structure as shown in Figure 8.That is, on the substrate 18 that constitutes LED lighting device 15, electric heater is not set and only disposes LED element 17, and can bury electric heater 52 underground in the doorframe the inside that constitutes described pillar 8.The face of this electric heater 52 glass door 7 sides of heating doorframe 45 when energising utilizes control device C, along with stop energising to the LED of LED lighting device 15 element 17 it is switched on.

Thus, by along with the turning off the light of LED lighting device 15, the electric heater 52 of the face of glass door 7 sides of heating doorframe 45 is switched on, can be suppressed at the dew that condenses on the doorframe 45 effectively.

Claims

1. showcase, it to being formed in the body and throw light in the showroom of display commodity, is characterized in that having with the LED lighting device:

Glass door, it opens and closes the opening of closing described showroom freely, and

Metal system doorframe, it is arranged on the described body constituting the opening edge of described showroom, and described glass door is connected on this metal system doorframe;

Described LED lighting device is arranged on heat exchange relationship on the face of described showroom side of described doorframe,

Described LED lighting device has electric heater, when described LED lighting device is turned off the light, switches on to described electric heater.