Plant cultivating method, cultivating device, and its lighting device

Abstract

A plant cultivating device (A), comprising aluminum long square pipe trays ( 5 ) for storing plants ( 35 ) together with culture solution, a conveyor device ( 2 ) for feeding the trays ( 5 ) in order in lateral direction, and a lighting device ( 3 ), having a number of light-emitting diodes disposed thereon, located over the conveyor device ( 5 ), the lighting device ( 3 ) being disposed so as to be higher gradually from the upstream side to the downstream side of the conveyor device ( 2 ), wherein a funnel-shaped holder ( 30 ) holding the upper part of the plant ( 35 ) is provided on the upper surface of the tray ( 5 ), and a planting conveyor ( 6 ) and a harvesting conveyor ( 7 ) for supply and retrieval, a reflecting wall ( 8 ) provided between these conveyors and the conveyor device ( 2 ), and transfer bars ( 41 ) for transferring the trays ( 5 ) between the conveyor device ( 2 ) and the planting and harvesting conveyors ( 6,7 ) are installed on the upstream and downstream sides of the conveyor device ( 2 ).

1 - 13 . (canceled)  
   
   
       14 . A light-emitting unit, comprising; 
 a circuit board having a circuit pattern;    number of lamps aligned and fixed with a conductive adhesive, wherein the lamps are enclosed in a package together with a reflecting plate, a light-emitting element, a bonding wire, and an electrode using a translucent molding material.    
   
   
       15 . A lighting-emitting unit according to  claim 14 , further comprising; 
 circuit board of aluminum; and    an insulation layer provided on the circuit board, wherein a circuit pattern is formed on the insulation layer.    
   
   
       16 . A light-emitting unit according to  claim 14 , further comprising; 
 a layer of soldering cream on which the circuit pattern is formed, wherein the layer is heated after mounting of the lamps so as to melt, and then cooled down naturally for solidifying, thereby fixing the lamps on the circuit pattern.    
   
   
       17 - 20 . (canceled)