AU728012B3 - Structure of an Ornamental Light Bulb - Google Patents

Description

Regulation 3.2

AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A PETTY PATENT

(ORIGINAL)

NAME OF APPLICANT(S): ACTUAL INVENTOR(S): ADDRESS FOR SERVICE: Tsui-Tuan Fan WONG Tsui-Tuan Fan WONG DAVIES COLLISON CAVE, Patent Attorneys 1 Little Collins Street, Melbourne, 3000 INVENTION TITLE: "Structure of an Ornamental Light Bulb" The following statement is a full description of this invention, including the best method of performing it known to me/us: -1- O;WOPER\KATWMONG.PET 20/9/99 P:Sope~kw482O0-9=podocI 8&A)AiO -1A- STRUCTURE OF AN ORNAMENTAL LIGHT BULB 1. Field of the Utility Model The present utility model relates to the structure of an ornamental light bulb, particularly to a light bulb having an integral housing provided thereto so as to prevent a short in the electrical wire and water leakage.

2. Description of Related Art As shown in Fig. 4, an ornamental light bulb normally has a pair of electrical wires a bulb (42) electrically connected with distal ends of the electrical wires a layer of glue (43) glued outside of the electrical wires a first isolation tube (44) securely attached with the glue (43) and enclosing the electrical wires (40) and a second isolation tube (45) securely connected with the first isolation tube After attaching the first isolation tube (44) and the second isolation tube the bulb (42) extends partially from one end of the first and second isolation tubes (44, 45). Because the layer of glue (43) securely attaches the first isolation tube (44) and the second isolation tube (45) securely attaches the first isolation tube the ornamental light bulb is waterproof. However, the assembly of the ornamental light bulb requires a lot of manual work, it is labor intensive.

3. Summary of the Invention In one aspect, the invention provides an ornamental light bulb comprising: two electrical wires; a bulb electrically connected with distal ends of the electrical wires; a plug securely inserted between the electrical wires; and a waterproof enclosure securely formed outside of the connected bulb, the electrical wires and the plug.

Embodiments of the invention provide an ornamental light bulb having an injection molded closure securely enclosing the bulb and the electrical wires.

The enclosures may be integrally formed with the attached bulb and the electrical wire, such that manual assembly of the ornamental light bulb is unnecessary and the cost of which is greatly reduced.

PlopeUX8S 2 -99rpoe.dDo- I 8A)7) -2- The detailed features of the present invention will be apparent in the detailed description with appropriate reference to the accompanying drawings.

Fig. 1 is a perspective view of an ornamental light bulb of the present utility model; Fig. 2 is an exploded perspective view of the ornamental light bulb as shown in Fig.

1; Fig. 3 is a side view in partial section of the bulb in Fig. 1, showing the relationship between the enclosure and the attached bulb and the electrical wires; and Fig. 4 is a perspective view showing the structure of a conventional ornamental light bulb.

The ornamental light bulb shown in Figures 1 and 2 has a pair of electrical wires a bulb (20) electrically connected with distal ends of each of the electrical wires a plug (30) securely mounted between the electrical wires (10) to function as a stop to the wires (10) so as that a short between the wires (10) avoided, a protection tubular film securely surrounded the outside of the assembled electrical wires, the bulb (20) and the plug (30) and an enclosure (50) integrally formed outside of the attached bulb (20) and the electrical wires The connection between the electrical wires (10) and the bulb (20) is conventional.

Therefore, detailed description thereof is not necessary.

When the connection between the bulb (20) and the electrical wires (10) is finished, the plug (30) is then inserted between the two electrical wires (10) such that a short between the electrical wires (10) is avoided. After the connection between the electrical wires the bulb (20) and the plug (30) is accomplished, the protection tubular film is then heated to surround and secure the above structure. Thereafter, the bulb (20) with the electrical wires (10) as well as the plug (30) and the film (40) is inserted into a mold (not shown) full of polyvinyl chloride (PVC). Because the bulb (20) and a portion of the electrical wires (10) which connect with the bulb (20) are immersed in the mold, when the PVC in the mold is cooled down and shaped, the bulb a portion of the electrical wires together with the plug (30) and the film (40) are securely enclosed by a layer of transparent enclosure (50) of PVC. Because the enclosure (50) is molded or injection molded, the components inside the enclosure (50) are sealed, such that not only are the PAopca%\48820-99mpon.doc- I18flA)O7 -3components inside the enclosure (50) protected, but the entire assembly is waterproof.

The described light bulb has the following advantages: 1. Easy Assembly: Using automation to connect the bulb the electrical wires the plug and the film (40) can be easily done. Then, the only process left is to move the bulb and the electrical wires (10) into a mold full of PVC and wait for the PVC to be cure.

2. Cost Reduction: Due to the formation of the enclosure manual labor is reduced to the minimum. Thus, the cost for production is greatly reduced.

3. Waterproof It is to be understood, however, that even though numerous characteristics and advantages of the described ornamental light bulb have been set forth in the foregoing description, together with details of the structure and function thereof, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.

The reference to any prior art in this specification is not, and should not be taken as, an acknowledgment or any form of suggestion that that prior art forms part of the common general knowledge in Australia.

113 i0' j~c)?

Claims (2)

1. An ornamental light bulb comprising: two electrical wires; a bulb electrically connected with distal ends of the electrical wires; a plug securely inserted between distal ends of the electrical wires to isolate the distal ends of the electrical wires to directly connect to the bulb; and an enclosure securely formed outside of the connected bulb, the electrical wires and the plug; wherein after the electrical wires, the bulb and the plug are immersed into a mold full of polyvinyl chloride, the enclosure is formed by molding to form an integral part with the bulb, the plug and the electrical wires.

2. The structure as claimed in claim 1, further having a protection tubular film securely surrounded the assembled bulb, the electrical wires and the plug. DATED this 2 4 th day of October, 2000 TSUI-TUAN FAN WONG By his patent attorneys Davies Collison Cave