KR101601970B1 - Light-emitting apparatus for inflatable objects - Google Patents

Light-emitting apparatus for inflatable objects Download PDF

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Publication number
KR101601970B1
KR101601970B1 KR1020150122305A KR20150122305A KR101601970B1 KR 101601970 B1 KR101601970 B1 KR 101601970B1 KR 1020150122305 A KR1020150122305 A KR 1020150122305A KR 20150122305 A KR20150122305 A KR 20150122305A KR 101601970 B1 KR101601970 B1 KR 101601970B1
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KR
South Korea
Prior art keywords
light emitting
unit
emitting device
case
inflated
Prior art date
Application number
KR1020150122305A
Other languages
Korean (ko)
Inventor
이향제
Original Assignee
이향제
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이향제 filed Critical 이향제
Priority to KR1020150122305A priority Critical patent/KR101601970B1/en
Application granted granted Critical
Publication of KR101601970B1 publication Critical patent/KR101601970B1/en
Priority to PCT/KR2016/007944 priority patent/WO2017039150A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/04—Resilient mountings, e.g. shock absorbers 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
    • F21V21/0832—Hook and loop-type fasteners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

A light emitting device for an inflator that emits light by being inserted into a depression on one side of an inflated inflated gas when inflating a gas, comprising: a light emitting body; a power supply part for supplying power to the light emitting body; A casing for accommodating the light emitting unit, the power supply unit, and the switch in a hermetically sealed state; and a case coupling member for keeping the case and the inflated state engaged with each other.

Description

[0001] Light-emitting apparatus for inflatable objects [

More particularly, the present invention relates to a light emitting device for an inflatable body which is inserted into one side of a beach ball, an advertisement balloon, a tube, a boat, and a balloon which is used by being inflated with a gas to be inflated, Emitting device.

The present invention relates to a light emitting device for an inflatable material having a waterproof function and capable of preventing a trouble from occurring even in contact with water.

The present invention relates to a light emitting device for an inflator, which is more firmly coupled to an inflated object and can be prevented from being separated by an external impact.

The present invention relates to a light emitting device for an inflator capable of reusing a battery by allowing replacement of the battery, and significantly reducing the manufacturing cost.

Generally, the inflatable material which is used after inflating the volume by injecting the gas such as the beach ball, the tube, the boat, etc., which is generally used for outdoor play, such as the adverbons and the balloons, So it is widely used.

However, since the inflated materials do not emit light themselves, they are difficult to use because they have low discrimination power at night.

Accordingly, Korean Utility Model Registration No. 20-0391062 discloses a "luminescent beach ball" in which a luminescent ball having an LED inside a ball-shaped body is incorporated to increase the pleasure of play by generating a visual effect .

However, since the regeneration utility model can not replace the battery, the use time is limited, and the light emitting ball is fixed inside the body and maintains a constant shape.

Korean Patent No. 10-0555295 discloses a method for manufacturing a tube for a beverage having an LED, which is manufactured by providing a pocket on one side of a reflective sheet cover, fusing a battery, a switch and a circuit board, and then fusing the cover around the cover by high- .

 However, since the battery can not be replaced, the use of the registered patent is limited.

Korean Patent No. 10-1381688 discloses a "light emitting device for a beach ball" which is housed in a beach ball and selectively removable.

However, the above-mentioned patent has a problem in that when the light emitting device and the beach ball are weak in bonding strength, the light emitting device is detached from the beach ball when an impact is applied from the outside.

In addition, since there is no waterproof function, there is a problem that the use environment is restricted because it causes a trouble in contact with water.

SUMMARY OF THE INVENTION The object of the present invention is to solve the problems of the prior art as described above, and it is an object of the present invention to provide a balloon, an advertisement balloon, a tube, a boat and a balloon which are injected and expanded in a state of being inflated, And an object of the present invention is to provide a light emitting device for an expandable material.

It is another object of the present invention to provide a light emitting device for an inflated product which is equipped with a waterproof function so that a trouble can be prevented from occurring even in contact with water.

It is still another object of the present invention to provide a light emitting device for an inflated product which is more firmly coupled to an inflated product and can be prevented from being separated by an external impact.

It is still another object of the present invention to provide a light emitting device for an inflated product which can replace a battery and reuse it, and can significantly reduce manufacturing costs.

A light emitting device for an inflator that emits light by being inserted into a depression on one side of an inflated inflated gas when inflating a gas, comprising: a light emitting body; a power supply part for supplying power to the light emitting body; A casing for accommodating the light emitting unit, the power supply unit, and the switch in a hermetically sealed state; and a case coupling member for keeping the case and the inflated state engaged with each other.

The case includes a receiving portion for receiving the light emitting body, a power supply portion and a switch, a shielding portion for shielding the inside space of the receiving portion, and a sealing member for generating an elastic restoring force between the receiving portion and the shielding portion .

The case coupling member is characterized in that a Velcro tape is adopted.

And a display unit for displaying at least one of a color, a pattern, a pattern, and a character is provided on one side of the case.

And the receiving portion and the shielding portion are coupled by a screw coupling method.

The switch is partially exposed to the outside of the case and can be turned on / off by a user.

A shielding portion and a protecting portion for protecting the human body are formed on the outside of the shielding portion and made of a material having an elastic restoring force, and a protecting portion binding member for maintaining the state where the protecting portion is coupled with the inflated material.

And a control unit for controlling the illuminance and the blinking pattern of the light emitting unit is provided at one side of the case.

The light emitting device for an inflator according to the present invention is configured to be inserted into one side of a beach ball, an advertisement balloon, a tube, a boat, and a balloon which are inflated by injecting a gas to emit light.

Therefore, since it has visibility even after sunshine, the usability is improved and it can be used for various purposes.

In addition, according to the present invention, since the waterproof function is provided, it is possible to prevent the occurrence of a fault even if it comes in contact with water.

Further, since it is more firmly coupled to the inflated object and the departure due to the external impact is prevented, there is an advantage that the safety accident can be prevented in advance.

In addition, the battery can be replaced and reused, and the manufacturing cost can be significantly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the structure of an embodiment of a light emitting device for an expansion according to the present invention. Fig.
2 is a use state diagram of an embodiment of a light emitting device for an expansion according to the present invention.
3 is a use state diagram of another embodiment of the light emitting device for an expansion according to the present invention.
4 is a sectional view showing the structure of another embodiment of a light emitting device for an expansion according to the present invention.
FIG. 5 is a detailed view showing the structure of a switch which is a constitution of the light emitting device for an expansion according to the present invention. FIG.
6 is a schematic view showing a structure in which a control unit is added in a light emitting device for an expansion according to the present invention;
7 is a cross-sectional view showing the structure of another embodiment of a case which is a constitution of the light emitting device for an expansion according to the present invention.
8 is a sectional view showing a structure in which a display portion is added in a light emitting device for an expansion according to the present invention.
9 is a schematic view showing another embodiment of a light emitting device for an expansion according to the present invention.
Fig. 10 is an application example of another embodiment of the light emitting device for an expansion according to the present invention. Fig.

Hereinafter, the configuration of a light emitting device for an expandable material (hereinafter referred to as 'light emitting device 100') according to the present invention will be described with reference to FIGS. 1 to 3 attached hereto.

FIG. 1 is a cross-sectional view showing a structure of an embodiment of a light emitting device 100 for an expansion according to the present invention, and FIG. 2 shows a state of use of an embodiment of a light emitting device 100 for an expansion according to the present invention And FIG. 3 shows a state of use of another embodiment of the light emitting device 100 for an expansion according to the present invention.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to describe its invention in the best possible way It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

As shown in the drawing, the light emitting device 100 according to the present invention is formed by luminescence coupled with an inflated product F which is expanded when a gas is injected therein, such as a beach ball, an adverb, a tube, a boat, It can be used for various purposes such as making it visible at night, emitting light for play, generating rescue request signal for lifesaving.

That is, as shown in FIG. 2, the light emitting device 100 is inserted into the depression G formed in the inflated product F such as an adverb and fixed so as not to be detached, and the light emitting device 100 is operated to emit light, It will be possible to maximize the advertising effect by increasing the visibility at night.

As shown in FIG. 3, the light emitting device 100 is inserted into the depression G of the inflated product F like a beach ball, and then fixed.

The light emitting device 100 includes a light emitting unit 110, a power supply unit 120 for supplying power to the light emitting unit 110, a power supply unit 120 for supplying power to the light emitting unit 110, A case 130 for accommodating the light emitting body 110, the power supply unit 120, and the switch 130 in a hermetically sealed state, a switch 130 for selectively short- And a case coupling member 160 having a coupling force so as to maintain the state where the inflator 140 and the inflated product F are coupled to each other.

The light emitting unit 110 may be an LED, a light bulb, or the like that emits light when power is supplied. The power supply unit 120 may be a battery or a solar power generation module.

The switch 130 is a part to be operated by a user when the light emitting unit 110 is intended to emit light, and may be applied variously if the light emitting unit 110 and the power supply unit 120 are electrically short- .

The case 140 is configured to receive and protect the light emitting unit 110, the switch 130, and the power supply unit 120. The case 140 can selectively open the inner space, The power supply unit 130 and the power supply unit 120 can be taken out from the inside of the case 140.

To this end, the case 140 includes a receiving part 142 for receiving the light emitting body 110, the power supply part 120 and the switch 130, a shielding part for selectively shielding the internal space of the receiving part 142 And a closure member 146 for generating and restoring an elastic restoring force between the receiving portion 142 and the shielding portion 144.

The receiving portion 142 and the shielding portion 144 are connected by a screw connection so that they are not separated from each other when an impact is generated from the outside. The sealing member 146 molded to have a ring shape is fitted with a material having an elastic restoring force.

Therefore, when the accommodating portion 142 and the shielding portion 144 are screwed together to apply pressure to the sealing member 146, the space formed by the receiving portion 142 and the shielding portion 144 is sealed, Inflow may be blocked.

On the other hand, a case coupling member 160 is provided on the outer surface of the case 140. The case coupling member 160 is used in parallel with the double-sided tape so that the Velcro tape is adopted in the embodiment of the present invention and can maintain contact with the inner wall surface of the depression G and the outer surface of the inflated product F desirable.

The Velcro tape may be attached to the outer surface of the case 140 using an adhesive such as a bond. The remaining Velcro tape, which is bonded to the Velcro tape attached to the outer surface of the case 140, It is preferable to keep the outer surface of the depression G and the inner wall surface of the depressed portion G attached.

An embodiment of the switch 130 will be described with reference to FIGS. 4 and 5 attached hereto.

4 is a cross-sectional view showing a structure of another embodiment of a light emitting device 100 for an expansion according to the present invention. FIG. 5 is a cross-sectional view showing a structure of a switch 130, which is a component of the light emitting device 100 for an expansion according to the present invention. A detailed view showing the structure is shown.

As shown in FIG. 4, the switch 130 is partially exposed to the outside of the case 140, unlike the switch 130 of FIG. This is configured to turn on / off by rotation as an alternative embodiment in which the switch 130 can be operated without opening the case 140.

5, the switch 130 includes a rotating portion 132 and a fixed portion 135. The rotating portion 132 is configured to rotate with respect to the fixing portion 135 do.

A contact 134 is provided in the rotation part 132 and the fixing part 135 so that the contact 134 contacts the rotation part 132 when the rotation part 132 rotates.

5, the rotation unit 132 is rotated clockwise or counterclockwise by 90 degrees so that the power supply to the light emitting unit 110 is cut off when the contact 134 falls.

At this time, the rotation part 132 is preferably coupled to the receiving part 142 in a waterproof function.

The light emitting device 100 according to the present invention may further include a controller 170 to control the light intensity and the flickering pattern.

Hereinafter, a coupling structure of the light emitting device 100 provided with the controller 170 will be described with reference to FIG.

6 is a schematic diagram showing a structure in which a controller 170 is added to a light emitting device 100 for an expansion according to the present invention.

As shown in the figure, the light emitting device 100 may further include a controller 170. 6, the controller 170 controls the illuminance of the light emitting body 110 by controlling the illuminance of the light emitting body 110 by controlling the illuminance of the light emitting body 110, Lt; / RTI >

Meanwhile, the case 140 may further include a protection unit 180. The protection unit 180 is configured to shield the user from contact with the shielding unit 144 by preventing the shielding unit 144 from being exposed to the outside by receiving the shielding unit 144 therein. .

Accordingly, when the light emitting device 100 is sandwiched by the beach ball and the user moves the beach ball by kicking or throwing it at a high speed, the shielding part 180 shields the shielding part 144 to prevent direct contact with the user's body And absorbs the impact through the elastic restoring force, so that the breakage of the shielding part 144 and the safety accident of the user can be prevented in advance.

It is preferable that the protection part 180 and the case 140 are firmly coupled to each other by providing the protection part coupling member 182 between the protection part 180 and the inflated product F. [ That is, the protective portion coupling member 182 is provided with a Velcro tape and is disposed between the protective portion 180 and the case 140 to provide a coupling force, So that the light emitting device 100 can be separated from the case 140.

Also, since the protection unit 180 is made of a material having an elastic restoring force, the protection unit 180 can be tightly coupled to the case 140 without using the sealing member 146 to have a waterproof function.

The light emitting device 100 may include a display unit 190. The display unit 190 is configured to display at least one of a color, a pattern, a pattern, and a character when the light emitting unit 110 irradiates light. The display unit 190 can be used as shown in FIG.

8 is a cross-sectional view showing a structure in which a display unit 190 is added to the light emitting device 100 for an expansion according to the present invention. The display unit 190 is formed separately from the case 140, Or may be provided directly on the outer surface of the case 140 through printing or the like.

The display unit 190 may include at least one of a color, a pattern, a pattern, and a character so that the light emitting unit 110 passes the light through the light emitting unit 110 to guide the company logo, So that it can be visually confirmed on the outer surface of the inflated product (F).

The scope of the present invention is not limited to the embodiments described above, and many other modifications based on the present invention will be possible to those skilled in the art within the scope of the present invention.

For example, FIG. 9 is a schematic view showing another embodiment of the light emitting device for an expansion according to the present invention, in which a gas such as helium, which is lighter than air, is injected into the inflated product F to float, So that the inflated product F can float while maintaining a predetermined height.

At this time, it is preferable that the outline of the inflated product F is illuminated with letters out of color through the display unit 190 of the light emitting device 100 so as to be displayed on the outer surface.

FIG. 10 is an application example of another embodiment of the light emitting device for an inflator according to the present invention. In the parking lot in which a plurality of vehicles can be parked, one of the embodiments of FIG. 9 is provided for each parking space, You can tell.

That is, when the vehicle is parked, the inflated object is pulled toward the lower side of the inflated object by the interference with the bottom surface of the vehicle and becomes lower than the height of the vehicle body, It is possible to provide convenience to the user.

If necessary, the inflated product F can be taken by the parking lot customer after parking the vehicle, so that the advertisement effect can be enjoyed through the letters, patterns, patterns and the like displayed on the inflated product F.

100. Light-emitting device 110. Light-
120. Power supply 130. Switch
132. Rotating part 134. Contact point
135. Fixed 140. Case
142. Receiving part 144. Shielding part
146. Closure member 160. Case-
170. Control section 180. Protection section
182. Protective portion coupling member 190. Display portion
F. Expansion G. Depression

Claims (8)

delete A light emitting device for an inflated light which is inserted into a depression on one side of an inflated object to be inflated when gas is injected,
A power supply unit for supplying power to the light emitting unit, a switch for selectively shorting a power supply between the power supply unit and the light emitting unit, a case for accommodating the light emitting unit, the power supply unit, and the switch in a hermetically sealed state, And a case engaging member for keeping the case and the inflated state in a state where they are coupled to each other,
In this case,
A receiving portion for receiving the light emitting body, the power supply portion and the switch,
A shielding portion for shielding the inner space of the accommodating portion,
And a sealing member that generates an elastic restoring force between the accommodating portion and the shielding portion to seal the accommodating portion.
The light emitting device according to claim 2, wherein the case coupling member is a Velcro tape.
4. The battery pack according to claim 3,
And a display unit for displaying at least one of a color, a pattern, a pattern, and a character.
5. The light emitting device according to claim 4, wherein the accommodating portion and the shielding portion are coupled in a threaded manner.
6. The light emitting device according to claim 5, wherein the switch is partially exposed to the outside of the case and is capable of being turned on / off by a user.
[7] The apparatus of claim 6, wherein the shielding unit is formed of a material having an elastic restoring force to protect the shielding unit and the human body,
And a protective portion engaging member for retaining the protector in a state of being coupled with the inflated body.
8. The battery pack according to claim 7,
And a control unit for controlling an illuminance and a blinking pattern of the light emitting unit.
KR1020150122305A 2015-08-31 2015-08-31 Light-emitting apparatus for inflatable objects KR101601970B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150122305A KR101601970B1 (en) 2015-08-31 2015-08-31 Light-emitting apparatus for inflatable objects
PCT/KR2016/007944 WO2017039150A1 (en) 2015-08-31 2016-07-21 Light-emitting device for inflatable object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150122305A KR101601970B1 (en) 2015-08-31 2015-08-31 Light-emitting apparatus for inflatable objects

Publications (1)

Publication Number Publication Date
KR101601970B1 true KR101601970B1 (en) 2016-03-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150122305A KR101601970B1 (en) 2015-08-31 2015-08-31 Light-emitting apparatus for inflatable objects

Country Status (2)

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KR (1) KR101601970B1 (en)
WO (1) WO2017039150A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113050546A (en) * 2021-02-04 2021-06-29 安徽江淮朗格电气有限公司 High-performance four-axis servo driver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005120946A2 (en) * 2004-06-05 2005-12-22 Phu Nguyen Device and method for sealing and lighting a balloon
KR101280236B1 (en) * 2012-08-14 2013-07-05 원명희 Beach having light and its keeping home
KR101381688B1 (en) * 2013-04-15 2014-04-04 원명희 Lighting device for beach ball
KR101548112B1 (en) * 2014-03-13 2015-08-27 곽정설 Balloon light

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005224420A (en) * 2004-02-13 2005-08-25 Nitsutakusu:Kk Light emitting ball
JP2005312881A (en) * 2004-04-30 2005-11-10 Tatsumi Denshi Kogyo Kk Balloon
KR101385177B1 (en) * 2011-10-24 2014-04-14 강석명 Light-emitting device with a balloon

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005120946A2 (en) * 2004-06-05 2005-12-22 Phu Nguyen Device and method for sealing and lighting a balloon
KR101280236B1 (en) * 2012-08-14 2013-07-05 원명희 Beach having light and its keeping home
KR101381688B1 (en) * 2013-04-15 2014-04-04 원명희 Lighting device for beach ball
KR101548112B1 (en) * 2014-03-13 2015-08-27 곽정설 Balloon light

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113050546A (en) * 2021-02-04 2021-06-29 安徽江淮朗格电气有限公司 High-performance four-axis servo driver
CN113050546B (en) * 2021-02-04 2022-03-08 安徽江淮朗格电气有限公司 High-performance four-axis servo driver

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