TECHICA FIELD

This invention relates to a curved fluorescent in which the plug of each leading wire can be connected easily by means of forming way of the bulb shape and setting both end parts of curved bulb through the board.

BACKGROUND ART

In conventional curved fluorescents, the tube type-bulb is curved as U-type shape and curved as U-type shape again so as to be saddle shape so that the diffusion of electric- light can not be even comparatively and, further, it's productivity is decreased because of inefficient 2 step- processes for curving the straight tube type bulb in order to make it as saddle shape.

Further, conventional curved tube shape fluorescent has defect that old fluorescent alone can not be removed for new one because it is fixed to the board, namely, it is not assembling part which can not be easily separated by the users.

DISCLOSURE OF THE INVENTION

This invention relates to a fluorescent in which the tu¬ be type bulb is curved as coil shape and both end parts of such curved fluorescent are set through the board so as to permit four plug in parts to project said board in order to enable each of two leading wires from both end parts of ^{" "} said curved fluorescent to be connected with s.iid plug in parts respectively to allow the said curved fluorescent al¬ one to be removed for exchange by means of pulling said pl- ug in parts out of the socket prepared inside the upper case. And such curved fluorescent in coil shape can be easily produced by simple work by curving the straight trbe type bulb along the fixed diameter of cylindrical body kee¬ ping proper space. So that the mass production of che pr- esent invention can be obtained because of the simple proc¬ essing.

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of production of the curved fluorescent can be downed be¬ cause easy process.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view showing the curved parts in coil shape and the state that its end parts are set th¬ rough the board which holds the fluorescent, further, the state that the leading wires are being gathered to one si¬ de plug in parts,

Fig. 2 is a side view showing the coil state of fluore- scent,

Fig. 3 is a diagram showing the connection state of the leading wires and the plug in parts in which partially sh¬ own in sectional view and

Fig. 4 is a side view of an example of the present in- vention showing the spaced state of curved parts of fluo¬ rescent by which the efficiency of light diffusion can be elevated.