Abstract:
A decorative lamp string assembly includes a plurality of lamps, lamp bases or sockets, electrical wires supports and clamping sockets each with an open end. The support is inserted from the open end of the clamping socket into the inner space thereof, and then the lamps, lamp bases or sockets are fitted securely into the inside of the clamping socket. Thus various decorative lamp string assemblies can be formed.

Description:
BACKGROUND OF THE INVENTION 
     The invention relates to a decorative lamp string assembly, particularly a positioning structure of the decorative lamp string comprising a supporting strut and clamping sockets for forming a multi-direction lamp string column. 
     A structure relating to the present invention and positioning the lamps of decorative lamp string on a support is shown in FIG. 1. The support 100 made of hard material has two U-shape clamping sockets 101a and 101b at its two ends. By using these two U-shape clamping sockets 101a and 101b, two lamps can be clamped in lamp socket 102. In such a way, a lamp string in two lamps as a unit can be fixed through a plurality of supports, wherein an electrical wire is used to connect two sets of supports. 
     SUMMARY OF THE INVENTION 
     The object of the present invention mainly relates to a support assembly for positioning lamps of a decorative lamp string. The support assembly includes long support(s) and a plurality of U-shape clamping socket with an open end, wherein the support is fitted from the open end of the clamping socket into the inner space thereof and fixed, and then a lamp, a lamp base or a lamp socket is fitted into the inside of the clamping socket to construct a lamp string assembly accordingly. 
     Another object of the present invention is to provide U-shape clamping sockets where in the inner part of the socket, a flange is formed against the upper edge of the support fitted therein, so as to prevent the clamping socket from coming off from the support. 
     Another object of the present invention is to provide a support where a series of flanges are formed along each edge of the two longitudinal sides of the support, so as to prevent the clamping sockets from moving along the support. 
     Another object of the prevent invention is to provide dual or multiple composite U-shape clamping sockets each with open end in the same direction. Which may simultaneously or individually clamp a lamp, a lamp base or a lamp socket. 
     Another object of the present invention is to provide dual or multiple composite U-shape clamping sockets each with open end in the different direction, corresponding to fit the dual or plurality of the supports and clamping the lamp, lamp base or lamp socket thereon. 
     Another object of the present invention is to provide a plurality of supports provided with dual or multiple U-shape clamping sockets with open ends in the different direction, constructing a decorative lamp string column in solid pattern. 
     The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operative advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     In the drawings: 
     FIG. 1 is a perspective view of a part of a conventional lamp string using discontinuous short support for positioning. 
     FIG. 2 is a perspective view of the first embodiment of the present invention showing its parts in their relative position. 
     FIG. 3 is a perspective view of the second embodiment of the present invention showing its parts in their relative position. 
     FIG. 4 is an enlarged left-end view of combination of each part of FIG. 3. 
     FIG. 5 shows the third embodiment according to the present invention, wherein the clamping socket forms in dual U-shapes end with an open end in the same direction. 
     FIG. 6 is a perspective view of combination of each part according to FIG. 5. 
     FIG. 7 shows the fourth embodiment according to the present invention, wherein the clamping socket forms in multiple U-shapes each with open end in the different direction. 
     FIGS. 8A and 8B show the perspective view of the support assembly before combination. 
     FIGS. 9A and 9B show the perspective view of the combination of each support assembly. 
     FIG. 10 is a perspective view of the fifth embodiment of the present invention showing its parts in their relative position and the position of decoration, branch or leaf. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The support assembly according to the first embodiment of the present invention is shown in FIG. 2, in which a lamp string 1 in series connection of lamps 1a, 1b, 1c and 1d, a strut support 2 and a plurality of clamping sockets 3 are included. Generally, the support 2 is made of plastic material and has rigidity. Along the two longitudinal side edges of support 2, recess 200a and 200b are formed at the set position, and pillars 201 each vertically projected from bottom face of support, 2 between recess 200a and 200b are formed. Clamping socket 3 is in the form of a U-shape body with open end. The section of inner space formed and surrounded by upper bottom and two side walls is the same as the sectional shape of support 2, two tips of the side walls bend inward, and a hole 301 is formed at the bottom to be fitted securely with pillar 201 of the support 2. 
     In the present invention, when the recesses of support 2 are engaged with the open end of each clamping socket, the two side edges of support 2 can be clamped securely by the two side walls of clamping socket 3, at the same time pillar 210 on support 2 and hole 301 on clamping socket 3 are also mutually engaged, so that clamping socket 3 and support 2 can be tightly integrated. Then lamp sockets 102a, 102b, 102c of lamps 1a, 1b, 1c . . . can be fitted inside clamping socket 3 and the inwardly bending of the two tips in socket 3 can prevent the lamp sockets 102a, 102b, 102c . . . from slipping out of the open ends of sockets 3. 
     The second embodiment according to the present invention is shown in FIG. 3. Flanges (201a, 201b), (202a, 202b), (203a, 203b) . . . are respectively provided along the upper edges of the two sides of support 2&#39;, and the function is similar to the recesses in FIG. 2 to prevent clamping sockets in the recesses from moving back and forth on support 2, and no pillar is set on the bottom of support 2&#39;. Clamping socket 3&#39; is a U-shape body with open end, in its inner space, two flanges 302a and 302b are projected respectively on the inner sides of two branches to divide the space into two parts. The space section positioning above the top surface of the flanges is in accordance with the lamp socket cross section. Further, two tips of the free end bend inwardly to engage closely with the lamp socket which will be inserted into the upper inner space so as to render the support difficult to slip out again from the opening of the clamping socket. The lower space cross section is similar to the cross section of support 2&#39;, when clamping socket 3&#39; is inserted into support 2&#39;, the shape under the bottom surfaces of the flanges is tightly combined with the support. Also, the bottom faces of flanges 302a and 302b can be set against the upper edges of the two sides of the support 2&#39;, as shown in FIG. 4. The top face of the flanges is made to be an inclined surface so as to make support 2&#39; easy to slip into the lower space of the clamping socket 3&#39;; and the bottom face of the flanges is shaped to be a horizontal plane so as to be well against the upper side edge of support 2&#39;. 
     The third embodiment according to the present invention is shown in FIG. 5, in which clamping socket 3&#34; forms dual U-shapes with open ends in the same direction. The inside structures of each branch U-shape clamping socket 3a, 3b are similar to those shown in FIG. 3 and FIG. 4 and the functions are also the same. However, a base plate is used for connecting the two branch clamping sockets 3a and 3b together. As shown in FIG. 6, after engagement of clamping socket 3&#34; with support 2&#39;, the lamp socket can be clamped by one branch clamping socket 3a, and the front end of the lamp socket can be placed against another branch clamping socket 3b; or the lamp socket can be clamped at the same time by both branch clamping sockets 3a and 3b. 
     The fourth embodiment according to the present invention is shown in FIG. 7, in which each clamping socket assembly 3&#34;&#39; is formed by gathering altogether multiple clamping sockets with open ends, in different direction, (as shown in FIG. 2 and FIG. 5). 
     In FIG. 7, three branch clamping sockets 3&#34;a, 3&#34;b and 3&#34;c separated at 120 degree are taken for example. For assembling, three supports 2&#34;a, 2&#34;b and 2&#34;c are pressed individually into the corresponding branch clamping sockets. Accordingly, the three supports and plural clamping socket 3&#34;&#39; are combined to be a column body. When the lamp bases in the lamp string are pressed into each branch clamping socket 3&#34;a, 3&#34;b and 3&#34;c lamp and thereby to be clamped, a decorative lamp string in pattern with 3-D is formed. 
     Referring now to FIGS. 8A and 8B, yet an embodiment for combination of support according to the present invention, it is shown that each support 2 can be connected via the connected parts (as shown in FIG. 8B) located at the two ends of support having a hole 221 or a pillar 211. There is a flange 222 in the inner space of the hole 221 or a flange 212 on the outer space of the pillar. Further, the two ends of the support 2 have a flange (not shown) in the inner space of the hole or have a concavity (not shown) on the outer space of pillar so as to prevent the support from moving or coming off. 
     Referring now to FIGS. 9A and 9B, the combination of support according to the present invention, permits the two adjacent supports 2 to be moved as desired. 
     Referring now to FIG. 10, yet another embodiment according to the present invention, it is shown with the support assembly with the support 2 are inserted into the open end of each clamping socket as in FIG. 2, wherein along the two longitudinal side of support 2, pillars 251 are equipped between the recesses 200a and 200a and the decoration (or branch or leaf) 502 with a hole at the lower bottom, or a hole 252 on the flat surface of support 2 and the decoration (or branch or leaf) 501 with a pillar at the lower bottom, the pillars and holes mutually combined so as to form variety decorative lamp string assembly. 
     To sum up all the foregoing by using the assembling device of this invention, a decorative lamp string assembly with variety of 3-D structure can be achieved. Therefore, there is no doubt that the present invention certainly has utilization value in industrial production.