JP6482246B2 - Showcase - Google Patents

Description

  The present invention relates to a showcase used in a food department of a store such as a supermarket or a convenience store and having a plurality of shelves for displaying items such as frozen and refrigerated foods.

  A conventional showcase has a plurality of shelves for displaying items such as frozen and refrigerated foods in front of a back plate provided inside a heat insulation wall having a substantially U-shaped cross section, and illuminates the displayed items. Thus, a fluorescent lamp is provided for each of a plurality of shelves. The power supply to the fluorescent lamp is the ballast outside the showcase (AC power supply), the power supply line connected to the ballast, the socket for connecting the fluorescent lamp connected to the end of the power supply line, and the fluorescent light attached to this socket. It is carried out through a lamp side plug and a fluorescent lamp line connecting the plug and the fluorescent lamp. In addition, fluorescent lamp connection sockets are arranged on the back plate at substantially equal intervals in the vertical direction corresponding to the fluorescent lamps on each shelf, and the power line is connected from the ballast to each fluorescent light connection socket. (For example, refer to Patent Document 1).

Japanese Utility Model Publication No. 3-32956 (column 3, line 42-column 4, line 26, FIGS. 1 to 2)

  In the showcase shown in Patent Document 1, the power supply to the fluorescent lamp uses a power supply line connected to each fluorescent lamp connecting socket from a ballast supplying alternating current. When an AC power supply for fluorescent lamps is used in this way, the wiring for supplying power to each fluorescent lamp must employ a wiring structure that extends to each fluorescent lamp connection socket or fluorescent lamp, and the ballast The closer to the side, the greater the number of power lines, and the thicker power lines on the ballast side become thicker.

  In general, these power supply lines are extended on the back side of the back plate, that is, in the cooling passage of the showcase, and the power supply lines become thicker on the ballast side, and the thickness of each power supply line varies in the cooling passage. This change not only increases the fluid resistance against the flow of cold air from the power line occupying the cooling passage, but also disturbs the flow of cold air flowing therethrough, and may hinder the smooth flow of cold air. It was.

  The present invention has been made paying attention to such problems, and it is an object of the present invention to provide a showcase in which a power line extending to a cooling passage is simplified and a flow of cool air flowing through the cooling passage can be made smooth. And

In order to solve the above problems, the showcase of the present invention is:
A plurality of shelf boards, a plurality of lighting fixtures provided on the plurality of shelf boards, a back wall provided on the back side of the plurality of shelf boards, and a cooling passage provided on the back side of the back wall In a showcase with
In a predetermined region in the cooling passage, a predetermined number of power lines extending from the power source are extended along the flow direction of the cold air, and the back wall penetrates the back wall from a plurality of locations of the power line. A connector having a conductive terminal for supplying power to each of the lighting fixtures ,
The conductive terminal is a crossover terminal, and a power supply line connected to one end of the crossover terminal in one direction and a power supply line connected in another direction opposite to the one direction are substantially orthogonal to each other. It is characterized by being provided .
According to this feature, since the power supply line extending from the power supply has a predetermined number in a predetermined region in the cooling passage, the thickness of the power supply line does not vary in the cooling passage. Since each power supply line is provided along the flow direction of the cold air, the turbulence phenomenon of the cold airflow due to the power supply line can be eliminated. Further, the power supply line does not become thick on the power supply side, and the fluid resistance due to the power supply line occupying the cooling passage can be suppressed. Further, the power supply line can be arranged substantially in parallel on the back wall, the bulge in the extending direction of the conductive terminal can be reduced, and there is little possibility of obstructing the flow of cool air in the cooling passage.

The predetermined number of power lines extend substantially linearly in the cooling passage, and the power lines are fixed to the back wall by connectors having conductive terminals for supplying power to the lighting fixtures. It is characterized by.
According to this feature, the power supply line extends in a straight line, and is fixed to the back wall by a connector having a conductive terminal for supplying power to each lighting fixture, so that the linear extension direction of the power supply line is cold air. Therefore, the flow of cold air is less likely to be disturbed.

The connector includes a fixing member that can fix the power supply line in a state along the extending direction.
According to this feature, since the power supply line can be fixed to the fixing member in the extending direction, the power supply line can be prevented from shaking due to the flow of the cold air in the cooling passage, and the turbulence of the cold air current can be prevented. It can be surely suppressed.

Wherein the fixing member is characterized in that mounting groove along the extending direction of the power supply lines are formed.
According to this feature, since the direction of the power supply line can be restricted by inserting the power supply line into the mounting groove, the power supply line can be fixed and wired easily.

The showcase of the present invention is
The power source is a DC power source, and the lighting fixture is a DC input type LED lamp.
According to this feature, since the direct current for the LED lamp is supplied to the power supply line, it is not necessary to provide a converter for converting alternating current into direct current on the LED lamp side, and on the shelf board side on which articles are placed. A wide space can be secured.

It is a perspective view which shows the open showcase in an Example. It is a cross-sectional view of the open showcase in the example. It is a figure which shows the state which removed the LED lamp side plug from the power supply side socket of the front side of the back wall in an Example. It is a figure which shows the connection state of the power supply line and power supply side socket of the back side of a back wall in an Example. It is a perspective view which shows the power supply side socket and power supply line in an Example, (a) is a top view, (b) is a right view. It is a perspective view which shows the state which removed the cover from the power supply side socket in FIG. It is the top view which mounted | wore the power supply side socket and the power supply line and the conductive terminal in FIG. It is sectional drawing of the power supply side socket in FIG. It is a front view of the power supply side socket in FIG. It is a reverse view of the cover of the power supply side socket in FIG. It is a figure explaining the conductive terminal with which the power supply side socket in FIG. 5 is mounted | worn, (a) is a front view, (b) is a right view, (c) is a BB sectional drawing which shows a crimping part.

  EMBODIMENT OF THE INVENTION The form for implementing the showcase which concerns on this invention is demonstrated below based on an Example.

  The showcase according to the embodiment will be described with reference to FIGS. Hereinafter, the left side of FIG. 2 will be described as the front side (front side) of the open showcase 1 (showcase), and similarly the right side will be described as the back side (rear side).

  As shown in FIGS. 1 and 2, the open showcase 1 is installed in a store that mainly handles food products such as stores, supermarkets, and convenience stores, and is kept cold or frozen while keeping the product at a low temperature. This is a freezer / refrigerated showcase installed for display in a state, and a plurality of shelves 6 (four steps) in the vertical direction are displayed in a cold room 5 surrounded by an inner box 3 having an open front side. ) Products (not shown) can be displayed on the bottom 3b provided at the bottom, and a large number of products can be placed.

  The open showcase 1 includes an outer box 2 having a substantially U-shaped structure whose front (left side in the drawing) is open, and an inner box 3 having a substantially U-shape which is also open on the inside. A case main body made of A rear wall 3a located on the back side of the plurality of shelves 6 in the inner box 3 has a rear end of a bracket 17 extending in the front-rear direction, and the shelf 6 is disposed on the bracket 17. ing. Products (not shown) are displayed on the upper surfaces of the shelf boards 6 and the bottom 3b of the inner box 3.

  A cooling passage 7 is formed between the outer box 2 and the inner box 3, and a blower 8 and a cooling device 9 are installed in the bottom passage 7A and the back passage 7B of the cooling passage 7, respectively. A cold air outlet 10 communicating with the upper passage 7C of the cooling passage 7 is formed downward at the front end of the upper portion of the case body, and a cold air inlet 11 that opens upward is provided at the upper end of the lower front end of the case body. Is formed.

  When the blower 8 is actuated, the cold air cooled by the cooling device 9 flows upward in the rear passage 7B of the cooling passage 7 as indicated by an arrow, and travels from the cold air outlet 10 toward the lower inlet 11. And blown out. As a result, a cold air curtain 12 is formed on the open surface of the front surface of the case main body, and a part of the cold air flows into the cold insulation chamber 5 to keep the displayed product cold.

  The open showcase 1 includes an LED lamp 14 attached to the lower surface of the canopy 13 projecting forward from the cold air outlet 10, an LED lamp 15 attached above the uppermost shelf 6, and a shelf board. 6 and a total of eight LED lamps 20 (lighting fixtures) which are attached to the lamp holder 21 at the front lower side and are arranged side by side in the left-right direction.

  The LED lamp 20 has a DC direct input type and a linear shape, and has a structure in which a lamp side socket (not shown) is connected to a lamp terminal (not shown) provided at one end thereof to supply power. Yes. The LED lamp side line 22 has a lamp side socket at one end and a plug 24 at the other end. Further, the LED lamp side line 22 is arranged along the lower surface of the shelf board 6, hooked on a hook 23 provided near the back wall 3 a of the shelf board 6, and drawn downward, and a plug 24 provided at the other end is provided. The power supply side socket 30 (connector) provided on the back wall 3a is connectable. The power supply side socket 30 is formed of a synthetic resin excellent in electrical insulation except for the conductive terminal 51.

  A power supply line 50 extending from the power supply side socket 30 is wired on the back side of the back wall 3a, extends downward, and is connected to a power supply 60 provided outside the case body. The power source 60 is connected to a commercial AC power source 63 via a line 62, and is configured to convert AC to DC by an AC / DC converter 61 and supply it to the power source line 50. Moreover, since the power supply of the air blower 8, the cooling device 9, and the LED lamps 14 and 15 is the same as a well-known thing, the description is abbreviate | omitted. Since direct current is supplied to the power supply line 50, an AC / DC converter is not required on the LED lamp 20 side, and the size can be reduced. Further, since direct current is supplied to the LED lamp 20, less power is supplied than the alternating current supplied to the fluorescent lamp, the power supply line 50 can be narrowed, and the amount of heat generated by the power supply line 20 is also small.

  As shown in FIG. 3, the plug 24 has a pin-like positive terminal 24a, a negative terminal 24b, and a ground terminal 24c that are electrically connected from the LED side line 22, respectively, in a substantially equilateral triangular arrangement. A cylindrical portion 24e is provided around the terminal 24a, the negative terminal 24b, and the ground terminal 24c.

  The power supply side socket 30 is inserted into the opening (not shown) of the back wall 3a from the front, and is fixed to this opening by the rib 35 and the locking claws 32, 32 (that is, provided through the back wall 3a). Yes.) The connector portion 33 to which the plug 24 is connected is provided with holes 33a, 33b, and 33c into which the positive terminal 24a, the negative terminal 24b, and the ground terminal 24c of the plug 24 are inserted, and a cylindrical portion 24e of the plug 24. A groove 33e to be inserted is provided between the cylindrical portion 33f and the base 31. Here, the height in the front-rear direction of the base 31 and the bottom surface of the cylindrical portion 33f (the height in the direction orthogonal to the paper surface in FIG. 3) is substantially the same.

  When connecting the plug 24 to the power supply side connector 30, the cylindrical portion of the plug 24 is in a state where the guide protrusion 24d on the inner surface of the cylindrical portion 24e of the plug 24 is aligned with the guide groove 33d of the cylindrical portion 33f of the connector portion 33. By inserting the tip of 24d until it contacts the bottom of the groove 33e of the connector portion 33, the positive terminal 24a, the negative terminal 24b, and the ground terminal 24c are provided on the back side of the holes 33a, 33b, 33c. Side terminals 51a, 51b, 51c (FIGS. 8 and 11: exposed to the shelf 6 side) and are electrically connected.

  The base 31 is provided with a protective cap 34, and when the plug 24 is not connected to the power supply side connector 30, dust can enter the power supply side connector 30 by inserting and holding the protective cap 34 in the groove 33 e. Is prevented. When the protective cap 34 is not used, the protective cap 34 is held in the protective cap holding portion 36 (FIG. 5) in which the concave portion 37 (FIG. 8) having the same shape as the outer periphery of the groove 33e is formed (FIG. 5). 3), the loss of the protective cap 34 can be prevented.

  As shown in FIGS. 1 and 4, four power supply side sockets 30 are provided on the back wall 3 a in four vertical directions corresponding to the shelf boards 6. The power supply line 50 extends in a straight line and in the vertical direction (the flow direction of cool air indicated by an arrow in FIG. 4) and is connected between the power supply side main body portions 40 of the power supply side sockets 30. The power supply line 50 between the power supply side main body portions 40 is located in a state exposed to the back surface passage 7B of the cooling passage 7, that is, the power supply side main body portion 40 and the power supply line 50 are disposed in the back surface passage 7B.

  The lowermost power supply side socket 30 is connected to power supply lines 50a1 (positive power supply line), 50b1 (negative power supply line), and 50c1 (earth line) connected to the power supply 60 and supplied with direct current. The power supply lines 50a2, 50b2, and 50c2 are connected by a crossover wiring between the lowermost and second power supply sockets 30 and 30 from the bottom. The power supply lines 50a3, 50b3, and 50c3 are connected to each other between the power supply side sockets 30 and 30 between the second from the bottom and the third from the bottom by a crossover wiring. The power supply lines 50a3, 50b3, and 50c3 are connected to the power supply side sockets 30 and 30 between the third and the top from the bottom by a crossover wiring. The power lines 50a1, 50b1, and 50c1 connected downward from the lowermost power supply side socket 30 extend downward, then bend rightward near the lower end of the back wall 3a, and bend downward again near the side wall of the case body. Near the boundary between the lower passage 7 </ b> A and the rear passage 7 </ b> B, it extends downward, is pulled out of the case body, and is connected to the power source 60.

  Thus, in the region (predetermined region) in the back passage 7B corresponding to the position of the shelf board 6, the power line 50 extending from the power source 60 extends in the vertical direction, which is the same direction as the cold air flow direction in the back passage 7B. Since the number of the power supply lines 50 is three (predetermined number), the total thickness of the power supply lines 50 does not vary in the back passage 7B. Moreover, since each power supply line 50 is provided along the flow direction of the cold air, the turbulence phenomenon of the cold airflow caused by the power supply line 50 can be eliminated. Further, the total power supply line 50 does not become thicker on the power supply 60 side, and fluid resistance due to the power supply line occupying the cooling passage can be suppressed.

  First, the conductive terminal 51 will be described with reference to FIG. The conductive terminal 51 is formed by bending a copper plate punched out. A pin connection part 52 having a tunnel shape in cross section, into which the pins 24a, 24b, and 24c of the plug 24 are press-fitted and electrically connected, a pair of protrusions 53 and 53 that guide when the conductive terminal 51 is assembled, and power supply lines 50 and 50 And caulking portions 54 and 54 that are electrically connected by caulking.

  The pin connection portion 52 is formed in a cross-sectional tunnel shape by a bottom portion 52B and a left side surface 52L and a right side surface 52R, which rise perpendicularly from both sides of the bottom portion 52B and then continue a quadrant arc. The pair of protrusions 53L and 53R rises perpendicularly to both sides from the bottom portion 52B, and the height thereof is higher than that of the pin connection portion 52. The caulking portions 54L and 54R are for caulking and connecting the power supply lines 50 and 50, respectively, and the stepped surface has a substantially U shape before caulking and has a substantially β shape after caulking.

  Next, a specific configuration of the power supply main body 40 will be described. As shown in FIGS. 5 and 9, the power source side main body portion 40 is formed in a substantially lantern shape extending upright from the base 31 (in a plan view, facing away from each other between a pair of opposed U-shaped portions. A side wall portion 42 having a shape connected by a pair of arcs), a lid portion 41 covering the open portion of the side wall portion 42, and a connector portion 33 (FIG. 3) provided on the opposite side of the lid portion 41 and inside the side wall portion 42. Its outline is formed.

  With reference to FIGS. 6 to 9, an internal structure to which the conductive terminal 51 of the power supply side main body 40 is attached will be described. A pair of substantially arc-shaped convex portions 42A provided on the back side of the side wall portion 42 (on the lid portion 41 side) so as to protrude from the pair of substantially arc-shaped portions to the back side, and contact the back surface of the lid portion 41, and a pair of A pair of linear convex portions 42B provided between the substantially arc-shaped convex portions 42A is provided. The pair of linear protrusions 42B are provided with semicircular mounting grooves 42Ba, 42Bb, 42Bc for holding the power supply line 50. These mounting grooves 42Ba, 42Bb, 42Bc connect the power supply side socket 30 to the back wall 3a. It extends in the up-down direction in the state attached to.

  A concave portion 43 is provided inside the cylindrical portion 33f (on the lid portion 41 side). In the concave portion 43, a terminal mounting portion 44a for attaching a positive conductive terminal 51a, a negative conductive terminal 51b, and a ground conductive terminal 51c. , 44b, 44c are formed. Terminal mounting portions 44a, 44b, 44c, power supply lines 50a, 50b, 50c, positive side conductive terminals 51a, negative side conductive terminals 51b, ground conductive terminals 51c, and fixing thereof are substantially the same on the positive side, negative side, and ground. Since it is a structure, in the following description, the thing regarding earth | ground is demonstrated and the thing of a positive side and a negative side is demonstrated as needed.

  The terminal mounting portion 44c is formed of a two-step recess including a recess 44c1 on the bottom surface side and a recess 44c2 on the lid portion 41 side, and the above-described hole 33c (FIGS. 3 and 8) is provided on the bottom surface of the recess 44c1 on the bottom surface side. ing. The recess 44c1 on the bottom surface side is formed in a cross-sectional tunnel shape (FIG. 6) along the outline of the pin connection portion 52c (FIG. 11B) of the ground conductive terminal 51c. The bottom surface of the tunnel shape is formed in a direction substantially parallel to the power supply lines 50c and 50c, and the ground conductive terminal 51c to which the power supply lines 50c and 50c are connected is inserted into the recess 44c1 on the bottom surface side. By attaching, the power supply lines 50c, 50c can be arranged in the vertical direction, and the power supply lines 50c, 50c can be prevented from bulging in the extending direction of the ground conductive terminal 51c.

  The concave portion 44c2 on the lid portion 41 side is substantially square in cross section (FIG. 6) and has a larger cross section than the concave portion 44c1 on the bottom surface side, and a step portion 44c3 is formed from the concave portion 44c2 on the lid portion 41 side to the concave portion 44c1 on the bottom surface side. Has been. When the ground conductive terminal 51c is inserted into the recess 44c, when the pin connection portion 52 of the ground conductive terminal 51c is inserted into the recess 44c1 on the bottom surface side, the pin connection portion 52 comes into contact with the bottom surface and the depth direction is positioned.

  The ground conductive terminal 51c is connected to a pair of caulking portions 54L and 54R by caulking power supply lines 50c and 50c, respectively. The power supply lines 50c, 50c are connected and arranged at the tips of the caulking portions 54L, 54R (FIG. 11 (c)) extending in directions opposite to each other and perpendicular to the axial direction of the ground conductive terminal 51c. In other words, the ground conductive terminal 51c and the power supply lines 50c and 50c are arranged so as to be substantially T-shaped. Therefore, the height at which the power supply lines 50c, 50c bulge to the rear side, that is, the rear passage 7B of the cooling passage 7, can be reduced.

  In order to mount the power supply lines 50c1 and 50c2 connected substantially orthogonally to the ground conductive terminal 51c on the power supply side main body portion 40 shown in FIG. 6 to obtain the state shown in FIG. The conductive terminal 51c is inserted and attached to the terminal attachment portion 44c, and the upper (upper side in FIG. 6) and lower power lines 50c and 50c are attached to the attachment groove 42Bc and the attachment groove 42Bc provided on the protrusion 42B and the protrusion 42B. Positioning is maintained by attaching. The lower power line 50c1 is also positioned and held by a pair of insulating walls 45d and 45e. Here, only the left and right sides of the lower power supply lines 50a1 and 50b1 are positioned by the insulating walls 45d and 45e.

  From the state shown in FIG. 7, the cover portion 41 is put on the side wall portion 42 and fixed, whereby the fixed state shown in FIGS. The lid portion 41 is provided with semi-circular mounting grooves 41Ba, 41Bb, 41Bc extending in the vertical direction facing the mounting grooves 42Ba, 42Bb, 42Bc of the convex portion 42B. 50a, 50b, and 50c are clamped and fixed. Thus, since the power supply line 50 is fixed in the vertical direction by the mounting grooves 41Ba, 41Bb, 41Bc of the power supply side socket 30 and the mounting grooves 41Ba, 41Bb, 41Bc of the lid portion 41, the power supply line 50 is exposed to the cooling passage 7. Even if it is done, it can suppress that the power line 50 shakes by the flow of cold air, and disturbs the flow of cold air. Further, since the fixing structure is the mounting grooves 41Ba, 41Bb, 41Bc, 42Ba, 42Bb, and 42Bc, the power supply line 50 can be easily fixed and wired. Further, since the power supply lines 50a, 50b, 50c can be fixed to the mounting grooves 41Ba, 41Bb, 41Bc, 42Ba, 42Bb, 42Bc, which are fixing members, in a state along the extending direction, the cold air in the rear passage 7B It is possible to prevent the power supply lines 50a, 50b, 50c from being shaken by the flow of, and to reliably suppress the turbulence of the cold airflow.

  Further, it is preferable to fix the lid portion 41 by applying an adhesive (not shown) to the convex portions 42 </ b> A and 42 </ b> B of the side wall portion 42. By using the adhesive, the lid portion 41 can be reliably fixed to the side wall portion 42, and the power supply line 50 can be reliably fixed to the power supply side connector 30. Further, the adhesive acts as a sealing agent, and it is possible to prevent cold air and dust in the cooling passage 7 from entering the recess 43 of the power supply side connector 30.

  Further, the front surface (inner surface) of the lid portion 41 is in contact with the side portions of the power supply lines 50a, 50b, 50c, and the projections 41Ca, 41Cb, which regulate the positions of the power supply lines 50a, 50b, 50c in the left-right direction. 41Cc is provided. By providing the protrusions 41Ca, 41Cb, and 41C in this manner, the power supply lines 50a, 50b, and 50c are reliably positioned and fixed.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

For example, in the above embodiment, the following may be used.
Although the position below the outside of the case body has been described as the position where the power supply 60 is disposed, it may be a position other than the bottom, such as above the case body or the side of the case body.

  Further, although the power supply line having the positive power supply line 50a, the negative power supply line 50b, and the ground line 50c has been described, the ground line is not essential, and only the positive power supply line and the negative power supply line (in this case, predetermined The number may be two).

  Further, the LED lamp 20 has been described with respect to the DC direct input type, but the LED lamp may be provided with an AC / DC converter. In this case, alternating current is supplied to the power supply line. Furthermore, the lighting fixture is not limited to an LED lamp, but may be another lamp such as a discharge lamp.

  Further, the place where the blower 8 and the cooling device 9 are arranged is not limited to the bottom passage 7A and the back passage 7B but may be another place.

  Moreover, although the example in which the power supply line 50 is disposed so as to be exposed to the back passage 7B of the cooling passage 7 has been described, the power supply line 50 may be covered with a U-shaped or U-shaped cover. In this case, the power supply line 50 only extends at least two (three in the embodiment) in the vertical direction. Since the occupied space is small, the cover can also be made small, and the cold passage space in the back passage 7B is hardly compressed.

  Further, the example in which the pin connection portion 52 of the conductive terminal 51 is brought into contact with the bottom portion of the recess 44c1 to perform positioning in the depth direction has been described, but the length of the pin connection portion 52 is configured to be shorter than the depth of the recess 44c1. Before the pin connection portion 52 comes into contact with the bottom of the recess 44c1, the pair of protrusions 53L and 53R come into contact with the back surface (the surface on the lid portion 41 side) of the step portion 44c3 so that the depth direction is positioned. Good.

  Further, an example in which the power supply line 50 is sandwiched between the mounting grooves 42Ba, 42Bb, 42Bc of the side wall portion 42 and the semicircular mounting grooves 41Ba, 41Bb, 41Bc of the lid portion 41 and fixed with an adhesive has been described. However, the means for fixing may be a means using screws, bayonet, nails or the like instead of the adhesive. Further, only one of the side wall portion 42 and the lid portion 41 may be provided with a mounting groove having a C-shaped cross section, and the power supply line 50 may be press-fitted and fixed in the mounting groove. Can be fixed and wired easily. Furthermore, as means for fixing the power supply line 50, other means such as fixing with a hook or screw may be used in addition to the above, and the power supply line is fixed and the power supply side socket is attached to the back wall. Thus, it is preferable that the power line is fixed in a direction along the flow of the cold air.

  Moreover, although the case where the power supply side socket 30 and the LED lamp 20 were connected electrically in parallel was demonstrated, the power supply side socket 30 and the LED lamp 20 may be electrically connected in series.

  Moreover, although the case where the power supply side connector is a socket and the LED lamp side connector is a plug has been described, the power supply side connector may be a plug and the LED lamp side connector may be a socket. Also, other connection forms may be used.

1 Open showcase (showcase)
3 Inner box 3a Back wall 6 Shelf plate 7 Cooling passage 7B Rear passage 20 LED lamp (lighting fixture)
24 plug 30 power supply side socket (connector)
33 Connector part 40 Power supply side main body part 41 Cover part 41B Convex part 41Ba, 41Bb, 41Bc Mounting groove 42 Side wall part 42B Convex part 42Ba, 42Bb, 42Bc Mounting groove 50 Power supply line 50a Positive power supply line 50b Negative power supply line 50c Earth line 51 Conductive Terminal 51a Positive Conductive Terminal 51b Negative Conductive Terminal 51c Ground Conductive Terminal 60 Power Supply 61 AC / DC Converter

Claims (5)

A plurality of shelf boards, a plurality of lighting fixtures provided on the plurality of shelf boards, a back wall provided on the back side of the plurality of shelf boards, and a cooling passage provided on the back side of the back wall In a showcase with
In a predetermined region in the cooling passage, a predetermined number of power lines extending from the power source are extended along the flow direction of the cold air, and the back wall penetrates the back wall from a plurality of locations of the power line. A connector having a conductive terminal for supplying power to each of the lighting fixtures ,
The conductive terminal is a crossover terminal, and a power supply line connected to one end of the crossover terminal in one direction and a power supply line connected in another direction opposite to the one direction are substantially orthogonal to each other. A showcase characterized by being provided . The predetermined number of power lines extend substantially linearly in the cooling passage, and the power lines are fixed to the back wall by connectors having conductive terminals for supplying power to the lighting fixtures. The showcase according to claim 1. The showcase according to claim 1, wherein the connector includes a fixing member that can fix the power supply line in a state along the extending direction. Wherein the fixing member, the showcase according to claim 3, characterized in that mounting groove along the extending direction of the power supply lines are formed. With the previous SL power is a DC power supply, showcase according to any one of claims 1 to 4, characterized in that the luminaire is a DC input type LED lamp.

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