Note: Descriptions are shown in the official language in which they were submitted.
DECORATIVE BULB WITH INNER LENS
TECHNICAL FIELD
[0001] The disclosure generally relates to the field of decorative bulb, and
more
particularly to a decorative bulb with inner lens.
BACKGROUND
[0002] Decorative bulbs are very suitable for decorative purposes because of
their
rich colors, small size, durability and energy savings. They can be installed
on a
circuit board or flexible cable or other materials, and can be used as a light
source
for letter lights, sign boards, track lights, tubes, etc.
[0003] Decorative bulbs have various shapes, and a pointed-bulb-shaped
decorative bulb is a common shape. The luminous plate of the pointed-bulb-
shaped decorative bulb is arranged at its bottom, and light of the luminous
plate
is uniformly emitted along the outer surface, but an amount of light of the
pointed-
bulb-shaped light bulb covering is different. Therefore, when human eyes look
at
the pointed-bulb-shaped light bulb covering from the outside, the brightness
of
the outer surface of the decorative bulb is uneven. As shown in FIG.1, the
upper
and lower parts appear bright, and there are multiple dark bars in the middle
part,
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Date Recu/Date Received 2021-10-13
giving people a visual effect with dark parts in the middle.
[0004] The purpose of this disclosure is to design a decorative bulb with
inner
lens for the above existing technical problems.
SUMMARY OF DISCLOSURE
[0005] In view of the problems existing in the prior art, the disclosure
provides a
decorative bulb with inner lens, and can effectively solve the problems
existing
in the prior art.
[0006] The technical scheme of the disclosure is:
[0007] A decorative bulb with inner lens, comprising:
a mounting base having external thread;
a light bulb covering mounted on the mounting base, the light bulb covering
provided with a light bulb covering cavity along an axis of the light bulb
covering;
an optical lens comprising a mounting part installed in the mounting base
and a lens part integrally formed with the mounting part, the lens part is a
semi-
ellipsoid structure, and a long axis of the lens part coincides with the axis
of the
light bulb covering, and the lens part is provided with a cone-shaped cavity
inside,
and the lens part is provided with a light refraction strengthening part on an
outer
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Date Recu/Date Received 2021-10-13
surface of the lens part, the light refraction strengthening part extends from
a top
of the lens part along the outer surface of the lens part to a bottom of the
lens part,
and a cross section of the light refraction strengthening part is in a shape
of
annular wave, an angle between a crest of the shape of annular wave and a
trough
of the shape of annular wave adjacent the crest A decreases successively along
a
bottom of the lens part to a top of the lens part, a wave height of the shape
of
annular wave becomes larger and then smaller along a bottom of the lens part
to
a top of the lens part;
a light unit mounted in the cone-shaped cavity.
[0008] Further, the light bulb covering comprises a first arc-shaped cover and
a
second arc-shaped cover in an axial sequence away from the mounting base, and
a radius of the first arc-shaped cover increases in a direction away from the
mounting base, and a radius of the second arc-shaped cover decreases in a
direction away from the mounting base; and a length of the second arc-shaped
cover in a direction of the axial is longer than a length of the first arc-
shaped
cover in a direction of the axial direction.
[009] Further, the light bulb covering cavity is connected to the light unit,
and an
upper part of the light bulb covering cavity is a conical structure, a lower
part of
the light bulb covering cavity is a cylindrical structure, and a transparent
or
translucent filling layer is filled between the outer surface of the light
bulb
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Date Recu/Date Received 2021-10-13
covering and the light bulb covering cavity.
[0010] Further, the light unit comprises a light board, and the light board is
connected in tandem with a current limiting resistor.
[0011] Further, the light unit is connected in tandem with rectifier circuit.
[0012] The decorative bulb further comprises a waterproof silicone pad mounted
inside the mounting base.
[0013] Further, a connection between the light bulb covering and the mounting
base is provided with a sealing ring.
[0014] Further, the outer surface of the light bulb covering is provided with
a
plurality of square cone-shaped inner concaves, and an area of a bottom
surface
of the square-shaped inner concave decreases from a bottom of the light bulb
covering to a top of the light bulb covering.
[0015] Further, a number of the crest of the shape of annular wave is 10-18.
[0016] Further, a height of the light bulb covering is defined as D1, a height
of
the lens part is defined as D2, D1:D2=3-4.
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Date Recu/Date Received 2021-10-13
[0017] The technical scheme has the following technical effects:
[0018] 1) When lighting, through the sharp pointed-bulb shape of the light
bulb
covering and a light bulb covering cavity inside, the upper part of the light
bulb
covering cavity is a conical structure, the lower part of the light bulb
covering
cavity is a cylindrical structure, and the optical lens is provided with
between the
light bulb covering and the light unit, and the cone-shaped cavity is provided
with
inside the optical lens, the lens part is provided with a light refraction
strengthening part on the outer surface of the lens part. Through the
cooperation
of the above parts of the structure, the technical effect of uniform
brightness of
the light bulb covering viewed from all angles is obtained, and a better
overall
vision is obtained.
[0019] 2) The light emitted by the light unit is refracted for the first time
when
entering the lens part through the lens cavity. After passing through the
light
refraction strengthening part, the direction of the light is changed again,
the
direction of the light changes as follows: the light is concentrated to the
crest of
the shape of annular wave, and the light is scattered towards the side surface
of
the light bulb covering. Then, the light is refracted again when it passes
through
the light bulb covering cavity and the filling layer. Finally, the light is
projected
to the inner wall of the light bulb covering to form a uniform luminous
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Date Recu/Date Received 2021-10-13
effect.
BRIEF DESCRIPTION OF DRAWINGS
[0020] FIG. 1 is a luminous state diagram of a traditional decorative bulb.
[0021] FIG. 2 is an exploded diagram of a structure of Embodiment 1.
[0022] FIG. 3 is an assembly diagram of a structure of Embodiment 1.
[0023] FIG. 4 is a diagram of a structure of an optical lens.
[0024] FIG. 5 is a diagram of a structure of an optical lens.
[0025] FIG. 6 is cross-sectional views of A-A and B-B and C-C of FIG. 5.
[0026] FIG. 7 is a diagram of angle A and height H of a shape of annular wave.
DETAILED DESCRIPTION
[0027] To facilitate the understanding of those skilled in the art, the
structure of
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Date Recu/Date Received 2021-10-13
the disclosure is further described in detail in connection with the
accompanying
drawings:
[0028] Embodiment 1
[0029] One embodiment of the disclosure, referring to FIG. 2-7.
A decorative bulb with inner lens, including:
a mounting base 6 having external thread;
a light bulb covering 1 mounted on the mounting base 6, the light bulb
covering 1 provided with a light bulb covering cavity 11 along an axis of the
light
bulb covering 1;
an optical lens 2 comprising a mounting part 201 installed in the mounting
base 6 and a lens part 202 integrally formed with the mounting part 201, the
lens
part 202 is a semi-ellipsoid structure, and a long axis of the lens part 202
coincides
with the axis of the light bulb covering 1, and the lens part 202 is provided
with
a cone-shaped cavity 203 inside, and the lens part 202 is provided with a
light
refraction strengthening part 204 on an outer surface of the lens part 202,
the light
refraction strengthening part 204 extends from a top of the lens part 202
along
the outer surface of the lens part 202 to a bottom of the lens part 202, and a
cross
section of the light refraction strengthening part 204 is in a shape of
annular wave,
an angle between a crest of the shape of annular wave and a trough of the
shape
of annular wave adjacent the crest is defined as A, A decreases successively
along
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Date Recu/Date Received 2021-10-13
a bottom of the lens part 202 to a top of the lens part 202, a wave height of
the
shape of annular wave is defined as H, H becomes larger and then smaller along
a bottom of the lens part 202 to the top of the lens part 202;
a light unit 3 mounted in the cone-shaped cavity 203.
[0030] Specifically, wherein the light bulb covering 1 comprises a first arc-
shaped
cover 101 and a second arc-shaped cover 102 in an axial sequence away from the
mounting base 6, and a radius of the first arc-shaped cover 101 increases in a
direction away from the mounting base 6, and a radius of the second arc-shaped
cover 102 decreases in a direction away from the mounting base 6; and a length
of the second arc-shaped cover 102 in a direction of the axial is longer than
a
length of the first arc-shaped 101 cover in a direction of the axial
direction.
[0031] Specifically, wherein the light bulb covering cavity 11 is connected to
the
light unit 3, and an upper part of the light bulb covering cavity 11 is a
conical
structure, a lower part of the light bulb covering cavity 11 is a cylindrical
structure,
and a transparent or translucent filling layer is filled between the outer
surface of
the light bulb covering 1 and the light bulb covering cavity 11.
[0032] Specifically, wherein the light unit 3 comprises a light board, and the
light
board is connected in tandem with a current limiting resistor. The light unit
3 is
connected in tandem with rectifier circuit. The rectifier circuit is used to
step
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Date Recu/Date Received 2021-10-13
down the mains, and the current limiting resistor is used to limit voltage.
The
rectifier circuit and the current limiting resistor belong to current
technology and
will not be described in detail here.
[0033] Specifically, wherein the decorative bulb further comprises a
waterproof
silicone pad 5 mounted inside the mounting base 6.
[0034] Specifically, wherein a connection between the light bulb covering 1
and
the mounting base 6 is provided with a sealing ring.
[0035] Specifically, wherein the outer surface of the light bulb covering 1 is
provided with a plurality of square cone-shaped inner concaves, and an area of
a
bottom surface of the square-shaped inner concave decreases from a bottom of
the light bulb covering to a top of the light bulb covering. The function of
the
square cone-shaped inner concaves is to refract the light and produce a
crystal
clear effect.
[0036] Specifically, wherein a number of the crest of the shape of annular
wave
is 10-18. In this embodiment, the number of the crest of the shape of annular
wave
is 12. In other embodiments, the number of the crest of the shape of annular
wave
can be 10 or 14 or 16 or 18.
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Date Recu/Date Received 2021-10-13
[0037] Specifically, wherein a height of the light bulb covering 1 is defined
as D1,
a height of the lens part 202 is defined as D2, D1 :D2=3-4. In this
embodiment,
D1:D2=4. In other embodiments, D1:D2 can be 3 or 3.5.
[0038] When lighting, through a sharp pointed-bulb shaped of the light bulb
covering 1 and a light bulb covering cavity 11 inside, the upper part of the
light
bulb covering cavity 11 is a conical structure, the lower part of the light
bulb
covering cavity 11 is a cylindrical structure, and the optical lens 2 is
provided
with between the light bulb covering 1 and the light unit 3, and the cone-
shaped
cavity 203 is provided with inside the optical lens 2, the lens part 202 is
provided
with a light refraction strengthening part 204 on the outer surface of the
lens part
202. Through the cooperation of the above parts of the structure, the
technical
effect of uniform brightness of the light bulb covering 1 viewed from all
angles
is obtained, and a better overall vision is obtained.
[0039] Working principle: the light emitted by the light unit 3 is refracted
for the
first time when entering the lens part 202 through the lens cavity 203. After
passing through the light refraction strengthening part 204, the direction of
the
light is changed again, the direction of the light changes as follows: the
light is
concentrated to the crest of the shape of annular wave, and the light is
scattered
towards the side surface of the light bulb covering 1. Then, the light is
refracted
again when it passes through the light bulb covering cavity 11 and the filling
layer.
Date Recu/Date Received 2021-10-13
Finally, the light is projected to the inner wall of the light bulb covering 1
to form
a uniform luminous technical effect.
[0040] The foregoing description is only a preferred embodiment of the
disclosure, and all changes and modifications to the patent scope applied for
in
accordance with the disclosure shall belong to the scope covered by the
disclosure.
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Date Recu/Date Received 2021-10-13
