JP7130567B2 - Showcase - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase in which a drain port for discharging drain water during defrosting is provided in a cold air circulation passage, and relates to a technique for improving the safety of inspection work of the drain port.

In the field of showcases, providing a drain port on the bottom wall of the cold air circulation passage below the display room so that the drain water generated during defrosting can be discharged from the drain port, and for inspecting the drain port. It is known in the art to provide a door for the In the showcase of Patent Document 1, a slide door that can be opened and closed is provided on the base shelf plate directly above the drainage portion (drain port), and the opening of the base shelf plate is opened by opening the slide door. It is possible to inspect and clean the drainage part and the garbage tray. The slide door is guided to open and close by a slide guide body provided on the lower surface of the base shelf board, and the slide guide body is fixed to a reinforcing stay fixed to the base shelf board. When inspecting or cleaning the drainage section, the slide door is opened after removing the products placed on the upper surface of the slide door and around the opening. When the inspection is completed, the slide door is closed, and the product is again placed on the upper surface of the slide door and displayed.

A showcase equipped with an inspection lid similar to the sliding door described above is disclosed in Japanese Patent Application Laid-Open No. 2002-200022. In the showcase of Patent Literature 2, the inspection lid is composed of a flat top plate and a bottom plate fixed to the bottom side of the top plate. An inspection opening is opened in the base shelf plate at the bottom of the storage compartment, and a mounting plate for supporting the inspection lid is fixed to the lower surface of the inspection opening. An I-shaped locking piece is formed at the front corner of the lower plate, and an L-shaped locking piece is formed at the front corner of the lower plate. These locking pieces are engaged with locking holes formed in the mounting plate to restrict the inspection cover from floating or slipping. When inspecting or cleaning the drainage section, insert a fingertip into the finger hole in the front part of the inspection lid and open and swing the inspection lid upward with the rear edge of the lid as a fulcrum. A binding band is attached in a ring shape to the pair of locking pieces on the rear corner side to prevent the locking pieces from slipping out of the locking hole.

JP 2003-254662 A JP 2010-117043 A

According to the showcase of Patent Literature 1, the drainage section can be inspected and cleaned by opening the slide door provided at the opening of the base shelf board. Similarly, according to the showcase of Patent Literature 2, the drainage section can be inspected and cleaned by swinging the inspection cover upward to open. However, the showcases of Patent Literatures 1 and 2 have a problem in terms of work safety when inspecting the drainage section or the like. In other words, when performing this type of work, it is necessary to stop the operation of the cool air circulation blower installed near the drainage section in order to carry out the work safely. Due to thoroughness or carelessness of the workers themselves, inspection work may be carried out while the blower is in operation, and there is a danger that the hands and fingers of the workers will accidentally touch the rotating blower fan and be injured. In addition, there is a risk that the cleaning tool may be caught in the rotating blower fan and damage the blower. In some showcases, a fan guard is provided on the inlet side of the blower for cooling air circulation to prevent fingers from accidentally touching the blower fan, but the cost of the showcase increases by the amount of the fan guard. unavoidable.

In addition, in the showcase of Patent Document 1, the opening and closing structure of the opening is composed of the reinforcing stay fixed to the lower surface of the base shelf plate, the slide guide fastened to the reinforcing stay, and the sliding door. The structure becomes complicated and the cost increases. Furthermore, in the showcase of Patent Document 2, a binding hole is formed in the bent portion of the L-shaped locking piece, and the binding band passed through the binding hole is received by the surrounding wall of the locking hole. Since the locking piece is prevented from coming out of the locking hole, when the inspection cover swings upward with the rear edge of the cover as a fulcrum, the binding band is received by the surrounding wall of the locking hole. If this happens, it becomes difficult to open and swing the inspection lid any further, and the inspection opening cannot be opened wide.

DISCLOSURE OF THE INVENTION The present invention has been made to solve the problems of conventional inspection lids as described above. The purpose is to enable the inspection work to be performed safely.

The showcase of the present invention comprises a display chamber 2 in which products are displayed, a ventilation passage 7 provided below the display chamber 2 for circulating cold air, a circulation fan 10 provided in the ventilation passage 7 for circulating cold air, and a drain port 17 for discharging drain water, an inspection port 19 opened in the bottom wall 12 of the display room 2 facing the drain port 17, an inspection lid 20 for opening and closing the inspection port 19, and the bottom wall of the display room 2 12 and a guide frame 22 that guides and supports the inspection lid 20 so that it can be slidably opened and closed. Between the open end of the guide frame 22 and the opening edge of the inspection port 19 on the open end side, an entrance opening M is provided to allow the inspection lid 20 to be displaced into the ventilation passage 7 . The inspection lid 20 is configured to be changeable between a closed posture in which the inspection door 19 is closed and a vertical open posture in which the inspection door 20 is displaced from the entrance opening M into the ventilation passage 7 to open the inspection door 19. . The inspection lid 20 in the vertical open posture is configured to block the inspection opening 19 and the circulation fan 10 inside the ventilation passage 7 .

The inspection opening 19 is provided in front of the circulation fan 10 in the ventilation passage 7 . The inspection lid 20 is provided with a slide shaft 32 extending in the left-right direction. The guide frame 22 is provided with a guide groove 29 that guides and supports the slide shaft 32 in the front-rear direction. It is guided and supported so that it can be freely opened and closed. An entry opening M is provided between the rear end of the guide frame 22 and the opening edge on the rear end side of the inspection opening 19 . The inspection lid 20 is in a horizontal posture and has a closed posture that closes the inspection opening 19, a horizontal open posture that is slid and opened rearward while maintaining the horizontal posture, and a rear end portion that rotates downward about the slide shaft 32. It is configured to be able to change its posture between a vertical open posture in which it is displaced from the entrance opening M into the ventilation passage 7 to open the inspection port 19 .

When the inspection lid 20 changes from the closed posture to the horizontal open posture, the rear end of the inspection lid 20 rotates downward due to the turning moment of its own weight, and switches to the vertical open posture.

The inspection opening 19 is provided in front of the circulation fan 10 in the ventilation passage 7 . The slide wall 23 of the inspection cover 20 is provided with a slide groove 37 extending in the front-rear direction, and the guide frame 22 is provided with a guide shaft 36 extending in the left-right direction. is guided and supported so that it can be slidably opened and closed in the longitudinal direction. The inspection lid 20 is in a horizontal posture in a closed posture that closes the inspection opening 19, in a standing open posture in which it is rotated upward around the guide shaft 36 to stand up in the entrance opening M, and in the standing open posture and falls by its own weight. As a result, the slide groove 37 is configured to be able to change its posture between a vertical open posture supported by the guide shaft 36 .

In a state in which the inspection lid 20 is switched to the vertical open posture, the closing start end of the inspection lid 20 protrudes upward from the opening surface of the inspection port 19 .

In the present invention, an entrance opening M is provided between the open end of the guide frame 22 and the opening edge of the inspection opening 19 on the open end side to allow the inspection lid 20 to enter the inside of the ventilation passage 7. The posture can be changed between a closed posture in which the inspection lid 20 closes the inspection port 19 and a vertical open posture in which the inspection lid 20 is displaced from the entrance opening M into the ventilation passage 7 and suspended by the guide frame 22.例文帳に追加Furthermore, the inspection cover 20 in the vertical open position blocks the inspection opening 19 and the circulation fan 10 inside the ventilation passage 7 . According to the showcase provided with such an inspection cover 20, even if the inspection work of the drainage port 17 is performed while the circulation fan 10 is in operation, the forearm or fingers may accidentally move toward the circulation fan 10. Even if the forearm or fingers are inserted into the circulation fan 10, the forearms or fingers come into contact with the inspection lid 20 before reaching the circulation fan 10, so the contact of the forearms or fingers with the circulation fan 10 can be reliably prevented. As described above, according to the showcase of the present invention, access to the circulation fan 10 can be blocked during the inspection work of the drain port 17, so the inspection work of the drain port 17 can be performed more safely.

In addition, since the forearm or fingers come into contact with the inspection cover 20 before reaching the circulation fan 10, it is possible to warn the operator that it is dangerous to insert the forearm or fingers further. Furthermore, when the forearm or finger touches the inspection lid 20, it is possible to call attention to the fact that the operation of the circulation fan 10 needs to be stopped. Therefore, according to the present invention, even if the inspection work of the drain port 17 is performed while the cold air circulation fan 10 is in operation due to carelessness or misunderstanding of the operator, the operator's attention is called. As a result, damage to the circulation fan 10 and injury to the operator can be prevented, and inspection work of the drain port 17 can be safely performed. Moreover, since it is not necessary to cover the suction port of the circulation fan 10 with a fan guard, the cost of the showcase can be reduced accordingly.

An entrance opening M is provided between the rear end of the guide frame 22 and the opening edge on the rear end side of the inspection opening 19, and the inspection lid 20 is in a horizontal posture, and in a closed posture that closes the inspection door 19, and a horizontal posture. , and the rear end rotates downward around the slide shaft 32 to displace from the entrance opening M into the ventilation passage 7 to open the inspection opening 19. It is configured so that the posture can be changed between the vertical open posture. According to this, when the inspection lid 20 is slid from the closed posture toward the horizontal open posture, the inspection lid 20 does not rotate downward until the slide shaft 32 enters the area of the entrance opening M. , the opening and closing operation of the inspection lid 20 between the closed posture and the horizontal open posture can be performed accurately. Further, when the inspection lid 20 is returned to the closed posture, if the slide shaft 32 moves out of the region of the entrance opening M, the inspection lid 20 can be restricted from rotating back to the vertical open posture. After inspection and cleaning of the port 17 are completed, the operation of returning the inspection cover 20 to the closed position can be reliably performed.

When the inspection cover 20 is changed from the closed position to the horizontal open position, the rear end of the inspection cover 20 is rotated downward by the turning moment of its own weight, and is switched to the vertical open position. A person can switch the inspection lid 20 from the horizontal open posture to the vertical open posture by simply releasing the inspection lid 20 after sliding the inspection lid 20 from the closed posture toward the horizontal open posture. It is possible to save the trouble of manually switching to the vertical open posture.

The inspection lid 20 is in a horizontal posture and closes the inspection opening 19, and is rotated upward around the guide shaft 36 to stand up in the entrance opening M, and falls by its own weight while in the standing open posture. Then, if the slide groove 37 is configured to be able to change its posture between the vertical open posture supported by the guide shaft 36, the inspection lid 20 does not need to be placed in the horizontal open posture, and can be simply switched to the standing open posture and the self weight can be changed. The inspection cover 20 can be easily switched to the vertical open position by simply dropping it.

When the inspection lid 20 is switched to the vertical open posture, if the closing start end of the inspection lid 20 protrudes upward from the opening surface of the inspection port 19, the inspection lid 20 protruding upward from the opening surface of the inspection port 19 The posture of the inspection lid 20 can be easily switched from the vertical open posture to the horizontal open posture simply by gripping the upper end of the lid and rotating it downward toward the guide frame 22.例文帳に追加

Fig. 2 is a vertical cross-sectional side view of the essential parts of the showcase according to the first embodiment of the present invention, showing a support structure for the inspection lid; It is a longitudinal side view of a showcase. FIG. 4 is a plan view of an inspection lid and a bottom wall that constitute the showcase; FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3; FIG. 4 is an exploded perspective view showing an inspection lid and a bottom wall that constitute the showcase; FIG. 4 is an operation explanatory diagram showing an opening operation of an inspection lid that constitutes a showcase; FIG. 10 is an operation explanatory diagram showing an opening operation of the inspection lid that constitutes the showcase according to the second embodiment of the present invention;

(Embodiment 1) FIGS. 1 to 6 show Embodiment 1 in which a showcase according to the present invention is applied to a refrigerated showcase. Front and back, left and right, and up and down in the present invention follow the crossed arrows shown in FIGS. In FIG. 2, the refrigerated showcase comprises a main case 1 lined with a heat-insulating material, an inner case 3 arranged inside the main case 1 and partitioning a display room 2, and partitioned between the two cases 1 and 3. A cold air circulation passage 4 is provided. Reference numeral 5 is a shelf bracket, and reference numeral 6 is a shelf board.

The cold air circulation passage 4 includes a first passage (ventilation passage) 7 provided below the display room 2, a second passage 8 provided behind the display chamber 2, and a passage above the display chamber 2. and a third passage 9 . A circulation fan 10 for circulating cold air is arranged inside the first passage 7 , and an evaporator 11 is arranged below the second passage 8 . A bottom panel (bottom wall) 12 of the display room 2 has a suction port 13 opened in front thereof. It is fed to the second passage 8 , cooled while passing through the evaporator 11 and fed to the third passage 9 . A blowout port 14 is provided at the front end of the third passage 9, and cool air is blown out from the blowout port 14 toward the suction port 13 to form an air curtain in front of the display room 2. - 特許庁

As shown in FIGS. 1 and 2, a drain port 17 is provided in the bottom wall 7a of the first passage 7 in order to discharge the drain water dripping from the evaporator 11 during defrosting to the outside of the showcase. In addition, a strainer 18 for receiving dust is provided at the opening. An inspection port 19 for inspecting the drain port 17 is opened in the bottom panel 12 of the display room 2 directly above the drain port 17, and the inspection port 19 is covered with an inspection lid 20 that can be freely opened and closed in the front-rear direction. ing. As shown in FIGS. 3 and 5, the bottom panel 12 is composed of a square panel body 12a and a pair of left and right reinforcing frames 12b fixed to the lower surface of the panel body 12a. An inspection opening 19 is formed between them.

As shown in FIGS. 3 and 4, the inspection lid 20 can slide back and forth with a rectangular main wall 21 that closes the inspection opening 19 from the bottom side and a guide frame 22 provided on the bottom surface of the bottom panel 12 of the display room 2. A pair of left and right slide walls 23 guided and supported by the main wall 21 closes the inspection opening 19 (see FIG. 6(a)), and the main surface wall 21 opens most of the inspection opening 19. The inspection cover 20 can be slidably opened and closed between the horizontal open position (see FIG. 6(b)) and the inspection cover 20 so that it can be switched from the horizontal open position to the vertical open position (see FIG. 6(c)). is configured to A finger hook hole 24 for opening and closing the inspection cover 20 is formed in the center of the front portion of the main surface wall 21 , and reinforcing walls are formed by bending the front and rear edges of the main surface wall 21 . The lateral length of the main surface wall 21 is set slightly smaller than the lateral length of the inspection opening 19 . The front-to-rear length of the main surface wall 21 is set slightly larger than the front-to-rear length of the inspection opening 19 .

The guide frame 22 is constructed using the reinforcing frames 12b described above, and includes a vertical frame wall 27 formed by bending the opposing surfaces of the pair of reinforcing frames 12b, and a horizontal frame wall continuous to the lower ends of the vertical frame walls 27. Together with the frame wall 28, it forms an L-shaped cross section. A longitudinally long guide groove 29 is formed in the vertical frame wall 27 facing the inspection opening 19 . The slide wall 23 provided in the inspection lid 20 is formed to have an L-shaped cross section by a vertical wall 30 facing the vertical frame wall 27 and a horizontal wall 31 slidably supported by the horizontal frame wall 28 . A slide shaft 32 is fixed to the vertical wall 30 and guided by a guide groove 29 so as to be reciprocally slidable. In this embodiment, the slide shaft 32 is composed of a small truss screw, and the threaded shaft of the slide shaft 32 is inserted through the guide groove 29 from the inner surface side of the vertical frame wall 27 and screwed into the screw hole 33 provided in the vertical wall 30. Thus, the inspection cover 20 is connected to the guide frame 22 so as to be slidable back and forth. In the inspection cover 20 at the closed position, the slide shaft 32 is positioned at the front end of the guide groove 29, and most of the slide wall 23 is supported by the guide frame 22 (see FIG. 6A).

When inspecting the drain port 17 or cleaning the strainer 18, after removing the products placed on the top surface of the inspection lid 20 and around the inspection port 19, put your fingertip on the finger hook hole 24. Then, the inspection lid 20 is closed and slid open backward from the attitude. When the inspection lid 20 is slid by the opening stroke L and switched to the horizontal open position, the slide shaft 32 is positioned at the end (rear side) of the guide groove 29 on the open end side, as shown in FIG. 6(b). end) and is located in the area of the access opening M, and the rear majority of the inspection lid 20 protrudes from the open end of the lateral frame wall 28 of the guide frame 22 . In other words, most of the inspection lid 20 including the slide shaft 32 protrudes from the open end of the guide frame 22 in the horizontal open position.

When the fingertip is removed from the finger hook hole 24 in the state of switching to the horizontal open posture, the inspection lid 20 is rotated downward from the horizontal open posture around the slide shaft 32 by the turning moment of its own weight, and FIG. ), while being supported by the guide groove 29, the inspection port 19 is opened further by switching to the vertical open posture. Looking at the series of movements from the closed position to the vertical open position, it can be seen that the inspection lid 20 is pivotally displaced from the entrance opening M into the first passage 7 and switched to the vertical open position suspended by the guide frame 22. Become. The closing start end (upper end) of the inspection lid 20 in this state protrudes upward from the opening surface of the inspection port 19 , and most of the inspection lid 20 below the slide shaft 32 is suspended in the first passage 7 . In this state, the inspection port 19 and the circulation fan 10 are blocked (see FIG. 1).

In order to smoothly rotate the inspection lid 20 downward, the front-to-rear distance of the entry opening M is set larger than the thickness dimension of the inspection lid 20 . It is conceivable that a rearward external force acts on the upper portion of the inspection lid 20 that has switched to the vertical open posture. 20 does not tilt significantly beyond the vertical open position. The inspection cover 20 may be manually slid by the opening stroke L and then swung upward to switch from the horizontal open position to the vertical open position.

According to the showcase constructed as described above, the inspection lid 20 switched to the vertical open posture blocks the inspection port 19 and the circulation fan 10, so that the drain port 17 can be inspected safely. For example, when the strainer 18 is removed from the drain port 17, even if the forearm or finger is accidentally inserted toward the circulation fan 10, the forearm should be removed before reaching the circulation fan 10 in operation. Since the fingers and hands come into contact with the inspection lid 20, it is possible to warn the operator that it is dangerous to insert the forearm or fingers any further. Furthermore, when the forearm or finger touches the inspection lid 20, it is possible to call attention to the fact that the operation of the circulation fan 10 needs to be stopped. Therefore, even if the inspection work of the drainage port 17 is performed while the cold air circulation fan 10 is in operation due to carelessness or misunderstanding of the operator, the inspection lid 20 switched to the vertical open posture will By alerting the worker, damage to the circulation fan 10 and injury to the worker can be prevented. Moreover, since it is not necessary to cover the suction port of the circulation fan 10 with a fan guard, the cost of the showcase can be reduced accordingly.

When the inspection cover 20 is switched to the horizontal open position, the slide shaft 32 and the guide groove 29 are engaged in the region of the entrance opening M, and most of the inspection cover 20 is the open end of the guide frame 22 ( rear end) (see FIG. 6(b)). Therefore, after the operator slides the inspection lid 20 from the closed posture toward the horizontal open posture, the inspection lid 20 is moved to the horizontal open posture (Fig. 6 ( b)) can be switched to the vertical open posture (FIG. 6(c)), and the trouble of switching the inspection lid 20 to the vertical open posture can be saved. When the inspection lid 20 is switched from the closed posture to the horizontal open posture, the slide shaft 32 is received by the open end of the guide groove 29, and the inspection lid 20 switched to the horizontal open posture can be positioned. Switching from the open position to the vertical open position can always be properly performed.

When the inspection work and cleaning work are completed, the inspection cover 20 is returned from the vertical open position to the horizontal open position. It is only necessary to rotate downward toward the frame 22, and the posture can be easily switched from the vertical open posture to the horizontal open posture. Incidentally, when the upper end of the inspection lid 20 is positioned below the opening surface of the inspection opening 19 in the vertical open posture, it is difficult to hang the fingertip on the main surface wall 21 side of the inspection lid 20. It takes time and effort to switch the posture from the open posture to the horizontal open posture. The inspection cover 20 switched to the horizontal open posture is slid forward toward the closed posture by hooking a fingertip in the finger hook hole 24.例文帳に追加When the inspection lid 20 is switched to the closed posture, the commodities removed from the top surface of the inspection lid 20 and the periphery of the inspection opening 19 are placed again on the top surface of the inspection lid 20 and the periphery of the inspection opening 19 and displayed.

In the inspection lid 20 of the first embodiment, since the slide shaft 32 is fixed to the slide wall 23, when the inspection lid 20 is slid from the closed posture toward the horizontal open posture, the slide shaft 32 is positioned in the area of the entrance opening M. The downward rotation of the inspection cover 20 can be restricted until it enters inside. This is because the slide shaft 32 is received by the guide groove 29 and cannot be rotated, even if the inspection cover 20 tries to rotate downward by the rotation moment of its own weight with the open end of the horizontal frame wall 28 as a fulcrum. Therefore, the opening/closing operation of the inspection cover 20 between the closed posture and the horizontal open posture can be performed accurately. Also, when the inspection lid 20 is returned to the closed posture, if the slide shaft 32 moves out of the area of the entrance opening M, the inspection lid 20 is restricted from being rotated back to the vertical open posture by the turning moment of its own weight. Therefore, it is possible to reliably return the inspection lid 20 to the closed posture after inspection and cleaning of the drain port 17 are completed.

(Example 2) Fig. 7 shows Example 2 of the showcase according to the present invention. In this second embodiment, a guide shaft 36 is fixed to the guide frame 22 facing the entrance opening M, and a slide groove 37 is formed in the slide wall 23 of the inspection lid 20 to be slidably guided by the guide shaft 36 . The guide frame 22 has a vertical frame wall 27 and a horizontal frame wall 28 continuous to the lower end of the vertical frame wall 27. A guide shaft 36 is fixed to the vertical frame wall 27 facing the entrance opening M. The slide wall 23 includes a vertical wall 30 and a horizontal wall 31 slidably supported by the horizontal frame wall 28 of the guide frame 22, and a slide groove 37 is formed from the front side to the rear side of the vertical wall 30. It is Since other parts are the same as those of the inspection cover 20 of the first embodiment, the same reference numerals are given to the same members, and the description thereof will be omitted.

When the inspection cover 20 closes the inspection opening 19 , the groove end on the open end side (rear side) of the slide groove 37 is received by the guide shaft 36 . When the inspection lid 20 is slid in the opening direction from this state, the closed end of the inspection lid 20 is exposed to the inspection opening 19 as shown in FIG. 7(a). 20 is rotated upward around the guide shaft 36 to switch to the standing open posture in which the door 20 stands up within the area of the entrance opening M as shown in FIG. 7(b). Furthermore, when the fingertip is removed from the finger hook hole 24 and the hand is released from the inspection lid 20, the inspection lid 20 drops by its own weight while in the upright open position, and the slide groove 37 guides the inspection lid 20 as shown in FIG. 7(c). It switches to the vertical open position suspended on the shaft 36 .

As described above, in the showcase of the second embodiment, the inspection cover 20 does not need to be placed in the horizontal open position, and the inspection cover 20 can be easily switched to the vertical open position simply by switching to the standing open position and dropping it by its own weight. be able to. The inspection lid 20 that has been switched to the vertical open posture blocks the inspection opening 19 and the circulation fan 10, like the inspection lid 20 of the first embodiment, to prevent fingers and forearms from touching the circulation fan 10. The operator's attention can be aroused. Further, the inspection cover 20 of the second embodiment does not necessarily have to be in the standing open position, and can be switched to the vertical open position by pushing the inspection cover 20 toward the entrance opening M while rotating it obliquely upward. can be done. In this case, the inspection lid 20 can be easily switched to the vertical open posture in a more comfortable posture than when the inspection lid 20 is once erected. In order to return the inspection cover 20 to the closed position, the inspection cover 20 can be pulled out from the entrance opening M while the upper part of the inspection cover 20 is grasped and rotated downward toward the guide frame 22, so that the vertical open position is obtained. It is possible to easily perform the operation of returning from the closed position to the closed position.

In the first and second embodiments described above, the inspection lid 20 is slid and opened/closed in the front-rear direction, but this is not necessary, and the inspection lid 20 may be opened/closed left/right or obliquely. The inspection port 19 does not need to be formed directly above the drain port 17 , and may be formed in the bottom panel 12 of the display room 2 facing the drain port 17 . The guide frame 22 does not need to be configured using the reinforcing frame 12b, and may be configured with dedicated parts. INDUSTRIAL APPLICABILITY The showcase of the present invention can be applied not only to refrigerated showcases but also to general showcases equipped with evaporators, such as frozen showcases and hot/cold storage showcases. A stopper structure is provided between the peripheral wall of the inspection port 19 and the inspection lid 20, the inspection lid 20 switched to the vertical open posture is locked by the stopper structure, and the inspection lid 20 rotates toward the horizontal open posture. It is possible to adopt a configuration that prevents the In this case, when the stopper structure is switched to the unlocked state, it is desirable that the inspection lid 20, which has been switched to the vertical open position, returns to the horizontal open position.

1 Main body case 2 Display room 4 Cold air circulation passage 7 Ventilation passage (first passage)
10 circulation fan 12 bottom wall (bottom panel)
17 drain port 19 inspection port 20 inspection lid 22 guide frame 23 slide wall 27 vertical frame wall 28 horizontal frame wall 29 guide groove 30 vertical wall 31 horizontal wall 32 slide shaft 36 guide shaft 37 slide groove

Claims (5)

a display room (2) in which merchandise is displayed;
A ventilation passage (7) for cold air circulation provided below the display room (2);
A circulation fan (10) for circulating cold air provided in the ventilation path (7), and a drain port (17) for discharging drain water,
an inspection port (19) opened in the bottom wall (12) of the display room (2) facing the drain port (17);
an inspection lid (20) for opening and closing the inspection opening (19);
a guide frame (22) provided on the lower surface of the bottom wall (12) of the display room (2) for guiding and supporting the inspection lid (20) so that it can be slidably opened and closed,
Between the open end of the guide frame (22) and the opening edge of the open end side of the inspection door (19), there is an access opening (M) that allows the inspection cover (20) to be displaced into the ventilation passage (7). is provided,
The inspection cover (20) closes the inspection opening (19), and the inspection cover (20) displaces from the entrance opening (M) into the ventilation passage (7) to open the inspection opening (19). It is configured so that the posture can be changed between postures,
A showcase, characterized in that an inspection lid (20) in a vertical open posture is constructed so as to block an inspection opening (19) and a circulation fan (10) inside a ventilation passage (7). In the ventilation passage (7), the inspection opening (19) is provided forward of the circulation fan (10),
The inspection lid (20) is provided with a slide shaft (32) extending in the left-right direction, and the guide frame (22) is provided with a guide groove (29) for guiding and supporting the slide shaft (32) in the front-rear direction, The inspection cover (20) is guided and supported by a slide shaft (32) along a guide groove (29) so as to be slidably openable and closable.
An entrance opening (M) is provided between the rear end of the guide frame (22) and the opening edge on the rear end side of the inspection door (19),
The inspection lid (20) is in a horizontal posture and closes the inspection opening (19), in a horizontal open posture in which the horizontal posture is maintained and slid open rearward, and in a rear end position centered on the slide shaft (32). (1) The position can be changed between a vertical open position in which the portion rotates downward and is displaced from the entry opening (M) into the ventilation passage (7) to open the inspection opening (19). Showcase as described. When the inspection cover (20) changes from the closed position to the horizontal open position, the rear end of the inspection cover (20) rotates downward due to the turning moment of its own weight, and switches to the vertical open position. 3. The showcase of claim 2, comprising: In the ventilation passage (7), the inspection opening (19) is provided forward of the circulation fan (10),
The slide wall (23) of the inspection cover (20) is provided with a slide groove (37) extending in the front-rear direction, and the guide frame (22) is provided with a guide shaft (36) extending in the left-right direction. (20) is guided and supported by the guide shaft (36) so that the slide groove (37) can be slidably opened and closed in the longitudinal direction,
The inspection lid (20) is in a horizontal posture and has a closed posture that closes the inspection opening (19), and an upright open posture in which it is rotated upward about the guide shaft (36) to stand at the entrance opening (M), 2. The showcase according to claim 1, wherein the display case can be dropped by its own weight in an upright open position and can change its position to a vertical open position in which the slide groove (37) is supported by the guide shaft (36). 5. The inspection lid (20) according to any one of claims 1 to 4, wherein a closing start end of the inspection lid (20) protrudes upward from the opening surface of the inspection opening (19) when the inspection lid (20) is switched to the vertical open posture. showcase.

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