Illumination – Light source and modifier – With sealing means or artificial atmosphere
Reexamination Certificate
1999-12-03
2001-05-29
O'Shea, Sandra (Department: 2875)
Illumination
Light source and modifier
With sealing means or artificial atmosphere
C362S229000, C362S391000, C362S377000, C362S378000, C362S806000, C439S611000, C439S617000, C439S699100, C439S699200, C439S602000, C439S666000
Reexamination Certificate
active
06238062
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a modified lamp series and, more particularly, to a modified connector and a modified seat of light bulb of a lamp series.
BACKGROUND OF THE INVENTION
Because a lamp series, such as a Christmas lamp series, has a good decorating effect, it is well adored by the people. The lamp series is an electric article such that its structure, safety, and performance need to be taken into account. Two kinds of lamp series in prior art shown in
FIGS. 1 and 2
have their drawbacks. As shown in
FIG. 1
, a lamp series is a power cable with a plurality of bulb sets installed thereon. Each bulb set comprises a light bulb
10
, a soft core
12
, and a soft head
14
. After the light bulb
10
is inserted in the soft core
12
, conducting threads
16
are respectively bent upwards at two sides of the soft core
12
. The soft core
12
is then lapped in the soft head
14
such that the soft core
12
is electrically connected to conducting plates
18
in the soft head
14
. But the soft core
12
of the lamp series must be lapped exactly in the soft head
14
. If the soft head
14
is too large, the conducting threads
16
will not contact well with the conducting plates
18
such that the conduction is not good and the soft core
12
and the light bulb
10
thereon will easily become loose so as to shed. If the soft head
14
is too small, it is difficult to lap the soft core
12
in the soft head
14
. The assembly will be difficult and cumbersome.
As shown in
FIG. 2
, another lamp series in prior art is a power cable with a plurality of copper caps
20
installed thereon. An inner thread is formed in the copper cap
20
. A copper head
26
having an outer thread is formed at the bottom of a light bulb
24
such that the copper head
26
of the light bulb
24
can be screwed in the copper cap
20
to achieve electric connection. Although assembly of this kind of lamp series is convenient, the metallic material of the copper head and the copper cap makes its cost high. Moreover, metallic material has no waterproof effect.
SUMMARY OF THE INNIENTION
The primary object of the present invention is to provide a waterproof lamp series that has characteristics of simple assembly and low cost.
Another object of the present invention is to increase the stability of assembly and connection between components and to reduce the problem of inexact assembly such that components will not shed.
According to the present invention, a lamp series is a power cable connecting a plurality of bulb sets. Each bulb set comprises a bulb seat, a fixing outer lid, and a bearing soft core. An accommodation groove is disposed in the bulb seat. An outer thread is formed on the upper periphery of the bulb seat. An inner thread is formed in the fixing outer lid. A retaining ring is installed on the top of the fixing outer lid. A bulb base of the light bulb penetrates an opening at the center of the retaining ring. The inner thread of the fixing outer lid can be matched exactly with the outer thread of the bulb seat such that the fixing outer lid can be screwed firmly on the bulb seat. The bearing soft core can be lapped exactly in the accommodation groove. Two opposite holes are disposed at proper positions of the bottom of the bearing soft core. The bulb base of the light bulb penetrates the opening of the fixing outer lid and is placed in the bearing soft core. Two conducting threads at the tail of the bulb base is threaded through the two opposite holes and is bent at two sides of the bearing soft core. The fixing outer lid is then screwed tightly on the bulb seat such that the bearing soft core and the light bulb can be fixed firmly in the bulb seat.
This and other objects, features and advantages of the present invention will become apparent to those skilled in the art upon consideration of the following description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5626415 (1997-05-01), Huang
patent: 5667296 (1997-09-01), Cheng
patent: 5738435 (1998-04-01), Lin et al.
Alavi Ali
O'Shea Sandra
Rosenberg , Klein & Lee
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