Air cushion bed with water-draining device

Abstract

The present invention relates to an air cushion bed with a water-draining device, comprising a water tank with an air cushion on top, air conduits, pumps and a controller. The foregoing air cushion contains multiple air bladders that are linked together; the air conduits are installed at both sides of the upper part of the air cushion with air holes toward various directions; the controller activates the pump to convey air, further controlling the inflation and deflation of the air bladders and the air spurting from the air conduits. The base plate of the water tank is tilted, having a water outlet at the lowest part, therefore the wastewater, contained by the water tank, can be channeled through the tilted base plate and discharged through the water outlet. The foregoing air conduits spurt cold or hot air, enabling the user to keep warm during the winter and keep cool during the summer, and providing the disabled or patients in the persistent vegetative state with heat-preserving effect, and functions of both body-washing and excrement cleaning while in bed.

What is claimed is:  
     
         1 . An air cushion bed, comprising: 
 an air cushion, consisted of at least one air bladder; and    a water tank, forming a water-containing space with a base plate and    four side walls, along with a water-draining device.    
     
     
         2 . An air cushion bed as in  claim 1 , wherein said water tank contains said four side walls formed integrally with said base plate, and said base plate is tilted to channel the discharge of water by said water drainage device.  
     
     
         3 . An air cushion bed as in  claim 2 , wherein a water outlet is installed at the lowest part of said tilted base plate.  
     
     
         4 . An air cushion bed as in  claim 3 , wherein a filter is installed on top of said water outlet to filter out filth.  
     
     
         5 . An air cushion bed as in  claim 1 ,  claim 2 , or  claim 3 , wherein said water tank is made of an air bladder that is filled with air, thus forming a water-holding space.  
     
     
         6 . An air cushion bed as in  claim 1 , wherein a controller is installed to control the airflow to said air bladder from a pump through air conduits, thus controlling the inflation and deflation of said air bladder.  
     
     
         7 . An air cushion bed as in  claim 6 , wherein an air conduit with air holes is installed to connect said air bladder and said pump controlled by said controller, thus the air is to be spurted out to said air bladder from said pump through said air conduit.  
     
     
         8 . An air cushion bed as in  claim 7 , wherein said controller controls the spurting of either cool or warm air.  
     
     
         9 . An air cushion bed as in  claim 7 , wherein the combination of said pump and said controller includes a micro-computing controller, said pump, an electromagnetic tee valve, a pressure sensor, and an automatic pressure controller. Said pump is controlled by said micro-computing controller, and said electromagnetic tee valve is installed between said pump and said air conduit. Said pressure sensor detects the pressure of the air bladder and enables the inflation and deflation of said air bladder.  
     
     
         10 . An air cushion bed as in  claim 6 , wherein the combination of said pump and said controller includes a micro-computing controller, said pump, an electromagnetic tee valve, and a heating unit. Said pump is controlled by said micro-computing controller, and said electromagnetic tee valve is installed between said pump and said air conduit. Said heating unit is installed at the air outlet of said pump, thus heating up the air spurted through said air hole of said air conduit.  
     
     
         11 . An air cushion bed as in  claim 1 , wherein said water tank can be placed on common sickbeds.  
     
     
         12 . An air cushion bed, installed on a supporting frame containing legs with wheels, comprising: 
 an air cushion, consisting of at least one air bladder; and    a water tank with a tilted base plate, whereon said air    cushion is installed, also a water outlet is installed at the lowest    point of said base plate.    
     
     
         13 . An air cushion bed as in  claim 12 , wherein a filter is installed at said water outlet to filter out the filth.  
     
     
         14 . An air cushion bed as in  claim 12 , wherein a controller is installed to control the air flow from said pump to said air bladder through said air conduit, thus enabling the control of the inflation and deflation of said air bladder.  
     
     
         15 . An air cushion bed as in  claim 14 , wherein an air conduit with air holes is installed to connect said air bladder and said pump controlled by said controller, thus the airflow is to be spurted out to said air bladder from said pump through said air conduit.  
     
     
         16 . An air cushion bed as in  claim 15 , wherein said controller controls the spurting of either cool or warm air.  
     
     
         17 . An air cushion bed as in  claim 12 , wherein said water tank comprises a shower nozzle and a placing rack, and said shower nozzle joining with a water hose having both sources of hot and cold water connected.  
     
     
         18 . An air cushion bed as in  claim 1  or  12 , wherein a pillow is attached to said air bladder.  
     
     
         19 . An air cushion bed as in  claim 1  or  12 , wherein said air bladder is made of waterproof material.