Note: Descriptions are shown in the official language in which they were submitted.
CA 02719419 2010-10-29
DESCRIPTION
TITLE OF THE INVENTION
Encapsulating method for sealed and water-proof LED and luminescent
holder
TECHNICAL FIELD OF THE INVENTION
This invention relates to the method of making string lights by LED,
specifically relates to an encapsulating method for sealed and water-proof LED
and
luminescent light made by this method.
BACKGROUND OF THE INVENTION
In prior art, there is a luminescent string lights. Each luminescent light is
composed of LED and holder. Generally, it is switched into conduction after
connecting the pin of the luminotron and the shrapnel in the holder. The
shrapnel is
connected to the power through lead. Since the string lights are normally used
outside, the holder is not water-proof and the pin and the shrapnel are not
fixed
together, the LED may be poor in conductance or damaged if water enters the
holder.
There is another method that is to directly encapsulate the LED and the
holder together by means of one-off injection moulding. Although this method
is
water-proof, the rate of finished products is low and the amount of rejections
increases.
BRIEF SUMMARY OF THE INVENTION
The objective of the present invention is to overcome the shortcomings in
existing technology and to provide an encapsulating method for sealed and
water-
proof LED and luminescent light. The luminescent light made by this method is
low in
cost and rejections. Moreover, it is superior in water-proof performance and
will not
be damaged even though it is used outside for a long time.
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CA 02719419 2010-10-29
Provide an encapsulating method for sealed and water-proof LED,
including the following steps:
Separately weld two leads or three leads onto the two pins of the LED;
Molding by mould and used for installing the holder of LED;
Put the LED with lead or various types of ornaments into the holder;
Buckle the holder;
Weld the periphery of the buckled holder by ultrasonic machine to form a
sealed luminescent light.
This invention enjoys such advantages as the followings: By means of
welding the lead of the luminotron first, putting it into the holder later,
and finally
sealing it by ultrasonic machine, it can increase the up-to-standard rate and
reduce
the rejections on the premise of ensuring the sealing effect.
The holder can adopt folding structure which is to set a folding structure on
one side only. It can also use two same hemi-structures which have buckle
structure.
The pin of the LED can be directly welded on the holder. Its luminescent end
comes
out from one end of the holder after installing the LED. The other two or
three leads
separately come out from the two holes of the other end, and then the
periphery of
the two hemi-components is welded together by the ultrasonic plastic soldering
technique, so as to form a complete sealed holder. In this way, the rain could
not
immerge into it. As the LED and the lead are directly welded, damage by
immerged
water and poor conductance are avoided.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig.1 is the structure profile of one hemi-structure in Implementation
Example One of holder of sealed and water-proof luminescent light made by this
method.
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Fig. 2 is lateral view of Fig. 1.
Fig. 3 is structure chart of sealed and water-proof luminescent holder.
DETAILED DESCRIPTION OF THE INVENTION
Provide an encapsulating method for sealed and water-proof LED,
including the following steps: separately weld two leads or three leads onto
the two
pins of the LED; molding by mould and used for installing the holder of LED;
put the
LED with lead or various types of ornaments into the holder; buckle the
holder; weld
the periphery of the buckled holder by ultrasonic machine to form a sealed
luminescent light.
As shown in Fig. 1, 2 and 3, it provides a sealed and water-proof
luminescent holder which is composed of two hemi-components 1 buckled
together.
After the two hemi-components buckled together, there forms a chamber inside.
One
end forms a hole for inserting the LED and the other end forms two separate
holes
for the two or three leads of the LED to get through.
As shown in Fig. 1, the two hemi-components 1 are structured in semi-
column whose inside is a cavity 101. One end is a semicircular orifice 102 and
the
other end is two small separate semicircular orifices 103. One lateral surface
of the
semi-column is equipped with a strip 104 which is set with one bayoner lock
105
separately on its two ends. The other lateral surface is installed with slot
106 and
hole 107 for said strip 104 and bayoner lock 105. The two hemi-components form
a
column holder after connected by the strip 104 and slot 106 and bayoner lock
105
and hole 107.
The periphery of the two hemi-components is welded together by the
ultrasonic plastic soldering technique, so as to form a complete sealed
holder. In this
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way, the rain could not immerge into it. As the LED and the lead are directly
welded,
damage by immerged water and poor conductance are avoided.
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