JP2000237010A - Shelf grounding device for low temperature showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shelf grounding device of a low temperature showcase capable of easily connecting a ground line to a merchandise display shelf. SOLUTION: A showcase main body is provided with a relay socket 31 of a fluorescent lamp, a power supply line 32 is connected to the relay socket 31 and the relay socket 31 is provided with a freely detachable relay plug 41. A fluorescent lamp line 42 is connected to the relay plug 41, the fluorescent lamp 42 is connected to a fluorescent lamp socket 50 and a lighting circuit is constituted. A resonance capacitor for lighting the fluorescent lamp provided in the lighting circuit is housed in a capacitor housing box 15 and the capacitor housing box 15 is fixed to the merchandise display shelf 12 through a screw 53. In the low temperature showcase, the power supply line 32 and the fluorescent lamp line 42 are respectively provided with the ground lines 33 and 43 and the ground line 43 of the fluorescent lamp line 42 is connected to the merchandise display shelf 12 through the screw 53 integrally with the capacitor housing box 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-temperature showcase shelf grounding device having a product display shelf.

[0002]

2. Description of the Related Art Generally, a relay socket for a fluorescent lamp is provided in a showcase body, a power supply line is connected to the relay socket, and a relay plug is detachably provided in the relay socket, and a fluorescent lamp wire is connected to the relay plug. Connect the fluorescent lamp wire to the fluorescent lamp socket to form a lighting circuit, store the resonance capacitor for fluorescent lamp lighting contained in this lighting circuit in the capacitor storage box, and show this capacitor storage box A low-temperature showcase fixed to a product display shelf of a main body via a screw is known.

[0003]

However, in the above-mentioned low-temperature showcase, since the merchandise display shelf is not grounded, for example, the merchandise display shelf is displayed from the fluorescent lamp provided on the back surface of the merchandise display shelf due to the influence of dew condensation or the like. There is a risk of electrical leakage on the shelf, and if the product display shelf is grounded to cope with this electrical leakage, the ground wire must be connected to the product display shelf using a ground wire fastener such as a screw. There is a problem that it takes.

[0004] It is an object of the present invention to provide a low-temperature showcase shelf grounding device which can easily connect a ground wire to a product display shelf by solving the above-mentioned problems of the prior art.

[0005]

According to the first aspect of the present invention,
A relay socket for a fluorescent lamp is provided in the showcase main body, a power supply line is connected to the relay socket, and a relay plug is detachably provided in the relay socket. A fluorescent lamp wire is connected to the relay plug. Is connected to a fluorescent lamp socket to form a lighting circuit.The resonant capacitor for lighting the fluorescent lamp included in this lighting circuit is stored in a capacitor storage box, and this capacitor storage box is screwed onto the product display shelf of the showcase body. In the low-temperature showcase shelf grounding device fixed via the above, the power line and the fluorescent lamp line each include an earth line, and the ground line of the fluorescent lamp line is connected to the commodity display shelf via the screw. It is characterized by being connected integrally with a capacitor storage box.

[0006] Since the ground wire is connected to the screw for fixing the capacitor storage box to the product display shelf, a ground wire stopper for stopping the ground wire and the work of stopping the stopper are not required, and the number of parts and the number of assembly steps are reduced. Can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, the ground wire is disposed outside the capacitor housing box, and the capacitor housing box has a pair of ground wires near the screw holes of the screws. It is characterized in that the holding portion is provided in a protruding manner.

[0008] Since a pair of ground wire holding portions protrude near the screw holes of the screws in the capacitor housing box, the fitted ground wire is hardly pulled out by the ground wire holding portion.

According to a third aspect of the present invention, in the first aspect of the present invention, the earth wire is integrally housed inside a capacitor housing box.

[0010] Since the ground wire is housed integrally inside the capacitor housing box, the appearance of the capacitor housing box is improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference symbol S indicates a low-temperature showcase, and the showcase body 1 of the low-temperature showcase S is shown.
Is provided with a heat insulating box 2, and a bottom wall 4 is provided inside the heat insulating box 2.
And a cool air passage 3b partitioned by the inner back wall 5 are provided. A cooler blower 6, a cooler 7, and the like are provided in the cool air passages 3a and 3b. During the cooling operation, the cooler blower 6 is driven to circulate cool air in the direction of the arrow.

That is, the storage room 1 is located inside the heat insulating box 2.
1 is formed, the cool air in the storage room 11 moves to the cool air passage 3 through the suction port 8, is sucked into the blower 6 for the cooler, is cooled by the cooler 7, rises, and then flows out of the outlet 9. At the same time, the storage chamber 11 is cooled, and returns to the cool air passage 3 again through the suction port 8.

The storage room 11 is provided with three-stage product display shelves 12, and a fluorescent lamp 13 for illuminating the storage room 11 is provided on the back of each product display shelf 12.

A relay socket 31 for the fluorescent lamp 13 is provided on the inner back wall 5 of the showcase main body 1. From the relay socket 31, a pair of power supply wires 32 and a ground wire 33 extend.
An electronic ballast 34 is connected in the middle of the power supply line 32, and extends outside the showcase body 1 as a power supply cord 35 composed of the power supply line 32 and the ground line 33, and a power supply plug 36 is connected to the end thereof. ing.

As shown in FIG. 2, a relay plug 41 is detachably provided in the relay socket 31. Extending from the relay plug 41 are a pair of fluorescent lamp wires 42 connected to the pair of power wires 32 and a ground wire 43 connected to the ground wire 33, which are substantially V-shaped in cross section of the product display shelf 12. It is introduced into the capacitor storage box 15 attached to the reinforcing plate 14.

As shown in FIG. 3B, the capacitor storage box 15 has a resin upper cover 21 and a resin lower cover 22, and a space between the upper cover 21 and the lower cover 22 is shown in FIG. 3A. Thus, the resonance capacitor 23 for lighting the fluorescent lamp is housed with high insulation. In addition, the capacitor storage box 15
A screw hole 24 for fixing the capacitor storage box 15 is provided substantially at the center. Reference numeral 25 denotes a dowel for positioning.

The fluorescent lamp wire 42 is connected to the capacitor storage box 1.
5, is led out again through the inside of the capacitor storage box 15 through the lead hole 49 formed in the capacitor 5, and a pair of fluorescent lamp wires 42 are installed at both ends of the fluorescent lamp 13 as shown in FIG. 2. Connected to each of a pair of fluorescent lamp sockets 50. A capacitor wire 45 extends from each of the fluorescent lamp sockets 50, and each of the capacitor wires 45 passes through a lead wire hole 49 as shown in FIG. 3A.
5 is connected to the resonance capacitor 23.
The lighting circuit of the fluorescent lamp 13 is constituted by the electronic ballast 34, the resonance capacitor 23 and the like.

In this embodiment, an earth wire 43 extending from the relay plug 41 together with the fluorescent lamp wire 42 is guided to the outside of the capacitor housing 15. A washer-shaped ground terminal 4 having a terminal hole 52 is provided at an end of the ground wire 43.
The ground terminal 47 is connected to the reinforcing plate 14 of the product display shelf 12 via a fixing screw 53 as shown in FIG.

When the capacitor storage box 15 is fixed to the reinforcing plate 14 of the product display shelf 12, the dowel 25 is
After being fitted into the dowel hole 51, the fixing screw 53 is screwed into the terminal hole 52 of the ground terminal 47 and the screw hole 2 of the capacitor housing box 15.
4 and tighten the fixing screw 53 to the reinforcing plate 14. At this time, the ground wire 43 is connected to the ground terminal 4.
7. The reinforcing plate 1 of the product display shelf 12 via the fixing screw 53
4 is integrally connected to the capacitor storage box 15, and the product display shelf 12 is grounded.

The screw hole 24 of the capacitor box 15
Near the hook 55, as also shown in FIGS. 3A and 3B.
And a pair of ground wire holding portions 54 having protrusions are provided. The ground wire 43 is fitted into the pair of ground wire holding portions 54. The fitted ground wire 43 is hardly removed by the hook 55 of the ground wire holding portion 54.

FIGS. 5 and 6 show another embodiment.

Reference numeral 61 denotes a capacitor storage box. As shown in FIG. 5B, the capacitor storage box 61 includes a resin upper cover 62 and a resin lower cover 63.
As shown in FIG. 5A, the ground wire 43 is guided to the inside of the capacitor storage box 61 through the lead wire hole 72 for the ground wire formed between the lower cover 63 and the lower cover 63, and provided at the end of the ground wire 43. The obtained washer-shaped ground terminal 47 is integrally housed inside the capacitor housing box 61. As shown in FIG. 5B, the diameter of the screw hole 67a of the upper lid 62 is formed larger than the diameter of the screw hole 67b of the lower lid 63.

When the capacitor storage box 61 is fixed to the reinforcing plate 14 of the product display shelf 12, as shown in FIG. 6, after the dowel 69 is fitted into the dowel hole 51 of the reinforcing plate 14, the fixing screw 70 is fixed. Is inserted into the screw hole 67a of the upper cover 62, the terminal hole 52 of the ground terminal 47, and the screw hole 67b of the lower cover 63, and the fixing screw 53 is tightened to the reinforcing plate 14. At this time,
The ground wire 43 is integrally connected to the reinforcing plate 14 of the product display shelf 12 and the capacitor storage box 61 via the ground terminal 47 and the fixing screw 70, so that the product display shelf 12 is grounded. The head of the fixing screw 70 is housed in the screw hole 67a of the upper cover 62.

In this alternative embodiment, the ground wire 46 is guided inside the capacitor housing 61 and the ground terminal 47 of the ground wire 46 is housed integrally, so that the appearance of the capacitor housing 61 is improved.

In the above two embodiments, the ground terminal 47 of the ground wire 43 is connected to the fixing screws 53 and 70 for fixing the capacitor storage boxes 15 and 61 to the product display shelf 12. It is not necessary to use a ground wire stopper for stopping the work and an operation of stopping the stopper, thereby reducing the number of parts and the number of assembly steps.

Also, since the ground wire 43 is led to the condenser storage box 15 or 61 on the back of the shelf together with the fluorescent lamp wire 43,
The wiring behind the shelf can be simplified, and the appearance of the wiring behind the shelf is improved.

Although the present invention has been described based on the two embodiments, the present invention is not limited to these embodiments.

[0029]

According to the first aspect of the present invention, since the ground wire is connected to the screw for fixing the capacitor storage box to the product display shelf, the ground wire stopper for stopping the ground wire and the fastener are provided. This eliminates the need for the operation of stopping the operation, and can reduce the number of parts and the number of assembly steps.

According to the second aspect of the present invention, since a pair of ground wire holding portions project from the screw hole of the capacitor in the capacitor housing box, the fitted ground wire is hardly removed by the ground wire holding portion. Become.

According to the third aspect of the present invention, since the ground wire is housed integrally inside the capacitor housing box, the appearance of the capacitor housing box is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a low-temperature showcase.

FIG. 2 is a diagram illustrating a wiring structure on a back surface of a product display shelf.

FIG. 3 shows a capacitor storage box, (A) is a plan view,
(B) is a side view of the wiring introduction side.

FIG. 4 is a side view showing a capacitor storage box attached to a reinforcing plate.

FIG. 5 shows a capacitor storage box according to another embodiment,
(A) is a plan view, and (B) is a side view on the wiring introduction side.

FIG. 6 is a side view showing a capacitor storage box attached to a reinforcing plate according to another embodiment.

[Explanation of symbols]

 S Low-temperature showcase 1 Showcase body 12 Product display shelf 13 Fluorescent lamp 15, 61 Capacitor storage box 23 Resonant capacitor 31 Relay socket 32 Power line 33, 43 Earth wire 41 Relay plug 42 Fluorescent lamp wire 47 Earth terminal 50 Fluorescent lamp socket 53 Fixing screw 54 Ground wire clamp

Claims (3)

[Claims] 1. A relay socket for a fluorescent lamp is provided in a showcase main body, a power supply line is connected to the relay socket, and a relay plug is detachably provided in the relay socket.
A fluorescent lamp wire is connected to the relay plug, the fluorescent lamp wire is connected to a fluorescent lamp socket to form a lighting circuit, and a fluorescent lamp lighting resonance capacitor included in the lighting circuit is stored in a capacitor storage box. In a low-temperature showcase shelf grounding device in which the capacitor storage box is fixed to a product display shelf of a showcase body via a screw, the power supply line and the fluorescent lamp line each include an earth line, A low-temperature showcase shelf grounding device, wherein a ground wire is integrally connected to the product display shelf and the capacitor storage box via the screw. 2. The capacitor housing box according to claim 1, wherein said ground wire is disposed outside said capacitor housing box, and said capacitor housing box has a pair of ground wire holding portions protruding near screw holes of said screws. A low-temperature showcase shelf grounding device as described. 3. The low-temperature showcase shelf grounding device according to claim 1, wherein said ground wire is integrally housed inside a capacitor housing box.