KR101707157B1 - Seat assembly - Google Patents

Seat assembly Download PDF

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Publication number
KR101707157B1
KR101707157B1 KR1020150100651A KR20150100651A KR101707157B1 KR 101707157 B1 KR101707157 B1 KR 101707157B1 KR 1020150100651 A KR1020150100651 A KR 1020150100651A KR 20150100651 A KR20150100651 A KR 20150100651A KR 101707157 B1 KR101707157 B1 KR 101707157B1
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KR
South Korea
Prior art keywords
sheet
ventilation
heating
communication module
unit
Prior art date
Application number
KR1020150100651A
Other languages
Korean (ko)
Other versions
KR20170009141A (en
Inventor
위보환
Original Assignee
주식회사 토마토헬스케어
위보환
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 주식회사 토마토헬스케어, 위보환 filed Critical 주식회사 토마토헬스케어
Priority to KR1020150100651A priority Critical patent/KR101707157B1/en
Publication of KR20170009141A publication Critical patent/KR20170009141A/en
Application granted granted Critical
Publication of KR101707157B1 publication Critical patent/KR101707157B1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/62—Accessories for chairs
    • A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
    • A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/62—Accessories for chairs
    • A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
    • A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
    • A47C7/742—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for ventilating or cooling
    • A47C7/744—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for ventilating or cooling with active means, e.g. by using air blowers or liquid pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/62—Accessories for chairs
    • A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
    • A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
    • A47C7/748—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling for heating
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/02—Automatically-operated arrangements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

The present invention relates to a seat assembly, and more particularly, to a seat assembly comprising: a base plate; A ventilation sheet having a plurality of second ventilation holes penetrating the upper and lower portions and having at least one mounting groove at a lower portion thereof; A fan; A heating sheet; A cover sheet coupled to wrap the ventilation sheet and the heat generating sheet; A temperature sensor installed between the heating sheet and the cover sheet to sense a temperature of the heating sheet; A fan driving unit; A heat generating drive unit; A controller for controlling the fan driving unit and the heat generating driving unit; And a first communication module for transmitting the temperature information measured by the temperature sensor in a wireless signal; a second communication module for performing communication with the first communication module; A display for displaying actual temperature information; An input unit for setting the temperature of the heating sheet; And a central processing unit for controlling the setting temperature information to be transmitted through the second communication module.

Description

Seat assembly

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat assembly, and more particularly, to a seat assembly in which a user can adjust the temperature of a seat remotely through a communicable management terminal such as a smart phone.

In general, not only the students who take classes but also the clerks who work at office will be sent in most of the day. Therefore, it is necessary to provide a good environment for sitting, so that it is possible to take classes and office work that are physiologically and psychologically pleasant, while if not, it causes enormous obstacle to the efficiency of class and office work, . Recently, chairs have been developed by introducing various ergonomic designs.

However, most of the development of chairs that can not cope with the required environment is taken, and in the winter or in the summer, it causes a variety of skin disorders by causing a ventilatory disorder at the part contacting the cause of stiffness of the body . Therefore, in recent years, development has been actively pursued to solve such a problem.

For example, Korean Utility Model Publication No. 20-1999-0002579 discloses a cold cushion used on a chair in an office or a home.

The cold / hot cushion is formed by a synthetic resin or the like, which is a cushion core, and the motor / fan is mounted on the rear side of the cushion. When the power is supplied to the motor / fan, the air sucked from the motor / Air is exhausted to the upper surface where the rear ventilation holes are formed to cool the space, and the surface heating element on which the ventilation holes are formed is mounted on the synthetic resin so that power can be supplied to the heating element to be used warm when cold.

However, since such a conventional cold / warm cushion is a product that can be used separately from a chair, the user may be burdened with an economic burden in the purchase of the chair and may be provided with cold or warm air There is a limitation in use.

In addition, since the conventional cold / hot cushion as described above can not control the temperature, when a patient or an elderly person who is uncomfortable to use is used, the heat is constantly supplied, which causes a problem of burning.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a seat for a user sitting on a chair, a heating sheet for providing heat to a back portion of the seat, and a ventilation sheet for ventilation, The object of the present invention is to provide a seat assembly that can detect temperature during the provision of heating and transmit sensed temperature information wirelessly, and can remotely control the temperature of the seat, thereby improving convenience in use.

According to an aspect of the present invention, there is provided a seat assembly comprising: a base plate having a plurality of first ventilation holes formed in a predetermined region; A ventilation sheet disposed on the base plate, the ventilation sheet being formed of a material having elasticity and having a plurality of second ventilation holes penetrating the upper and lower portions, and having at least one mounting groove at a lower portion thereof; A fan mounted in a mounting groove between the base plate and the ventilation sheet; A heat generating sheet disposed on the ventilation sheet, the heat generating sheet having a predetermined pattern, a heating sheet formed so as to surround the heating line, and capable of passing air passing through the ventilation hole of the ventilation sheet; A cover sheet coupled to wrap the ventilation sheet and the heat generating sheet; A temperature sensor installed between the heating sheet and the cover sheet to sense a temperature of the heating sheet; A fan driving unit for driving the fan; A heating drive unit for driving the heating sheet; A control unit for receiving the measured temperature information measured by the temperature sensor and controlling the fan driving unit and the heating driving unit; And a first communication module for transmitting the temperature information measured by the temperature sensor in the form of a radio signal under the control of the controller, and a second communication module for performing communication with the first communication module; A display for displaying actual temperature information received via the second communication module; An input unit for setting the temperature of the heating sheet; And a central processing unit for controlling the set temperature information input through the input unit to be transmitted through the second communication module.

Wherein the ventilation sheet includes a pair of topsheets having a predetermined spacing therebetween, and an intermediate yarn connecting both topsheets in a space between both topsheets, wherein the topsheet is formed of a mesh structure forming a porous, Is formed of a monofilament material and is characterized in that both surface sheets are connected diagonally.

And a guide unit installed inside the ventilation sheet to guide air movement from a lower portion of the ventilation sheet to an upper portion of the ventilation sheet so as to prevent the second ventilation hole of the ventilation sheet from being closed at the time of user's sitting .

The lower portion of the guide portion is open and the lower portion is formed with a plurality of first air holes in a pattern corresponding to the pattern of the second ventilation hole formed on the bottom portion. A guide formed to surround the air hole of the lower case between the upper case and the lower case and extending a predetermined length upward; Closing projections for opening and closing the second air holes; and an opening / closing projection provided below the opening / closing projections to open the second air holes when the user is seated, and in other cases, the opening / And an elastic spring for elastically biasing the opening / closing projection upward to close the second air hole .

The seat assembly according to the present invention can provide a warm seat and a cold seat by combining a seating portion of a user sitting on a chair, a heating sheet for providing heat to the backrest portion, and a ventilation sheet for ventilation, And the temperature of the seat can be controlled remotely, thereby improving convenience in use.

1 is a perspective view of a seat assembly according to the present invention;
2 is a sectional view of the seat assembly shown in Fig.
Figure 3 is an exploded perspective view of the seat assembly shown in Figure 1;
4 is a block diagram showing the components of the seat assembly shown in Fig.
5 is a cross-sectional view of a seat assembly according to another embodiment of the present invention;
6 is a sectional view for explaining the operation of the seat assembly shown in Fig.

Hereinafter, a seat assembly according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 show a seat assembly 1 according to the present invention. Referring to FIG. 1 to FIG. 1, a seat assembly 1 according to the present invention includes a seat unit 10 and a management terminal unit 20.

The seat unit 10 includes a base plate 110, a ventilation sheet 120, a heat generating sheet 140, and a cover 140. The base unit 110 is mounted on a desk chair, A temperature sensing sensor 160, a fan driving unit 170, a heat generating driving unit 180, a control unit 190 and a first communication module 195. [

The base plate 110 is a frame for supporting the seat unit 10 and has a rectangular plate shape. The base plate 110 has a predetermined strength to support the weight of the user, Ventilation holes 111 are formed, and on the upper surface, the below-described fans 130 are arranged and fixed so as to be spaced apart from each other.

The ventilation sheet 120 is disposed on the base plate 110. The ventilation sheet 120 is made of a material having elasticity such that the volume of the ventilation sheet 120 is reduced by the weight of the user when the user is seated, And a plurality of second ventilation holes 121 penetrating the upper and lower portions are formed in the entire area.

At least one mounting groove 123 is formed in the lower portion of the ventilation sheet 120 so as to form a receiving space for receiving the fan 130 installed on the upper surface of the base plate 110, have. The mounting groove 123 may be formed as a single unit. However, in order to prevent the ventilation sheet 120 from sagging when the user is seated, a plurality of the mounting grooves 123 may be independently divided as shown in FIG. 2, It is preferable to be formed to be in contact with the base plate 110.

The ventilation sheet 120 may be formed of a polyurethane material and may be formed of at least one double lacquer fiber sheet having excellent air permeability, restoring force and shape-retaining performance .

The double lacquer fiber sheet is a three-layered three-dimensional structure composed of a pair of topsheets having a predetermined spacing from each other and an intermediate yarn connecting both topsheets in a space between both topsheets, wherein the topsheet and the intermediate yarns are made of synthetic fibers . The surface sheet is provided with a mesh structure that forms pores by using materials such as PET (polyethylene terephthalate), PE, and PA, and the intermediate sheet is formed by using a monofilament material such as PA (polyamide), PET, It is preferable to have a structure for connecting the topsheet. This double lacquer fiber sheet can easily adjust the spacing of both topsheets and the density of the mesh and the density of the meshes to have the air permeability, restoring force and shape retention required in the vehicle seat.

The fan 130 is installed in a mounting groove 123 between the base plate 110 and the ventilation sheet 120 to receive air of the outside air through the first ventilation hole 111 formed in the base plate 110 And is sucked into the mounting groove 123 side and supplied to the second ventilation hole 121 of the ventilation sheet 120. The fan 130 may be a radiator fan having a small vertical height, which is used for radiating heat from a computer CPU, or a sirocco fan having a low noise level so that the depth of the mounting recess 123 can be minimized.

The heating sheet 140 is disposed on the ventilation sheet 120 and includes a heat line 141 arranged in a predetermined pattern and a ventilation hole 142 formed to surround the heat line 141, And a heat wire cover 145 formed to allow air to pass therethrough. The heat-radiating cover 145 is formed of a material having high thermal conductivity and has a non-combustible structure and has a network structure (mesh structure) so that air supplied through the ventilation sheet 120 disposed below can pass therethrough .

The first ventilation hole 111 and the second ventilation hole 121 and the heating sheet 140 pass through the ventilation sheet 120 and the heat generating sheet 140, And the heat generated from the heating sheet 140 is effectively transmitted to the user. The heat conductive sheet 140 is made of a material having high thermal conductivity and insulation property.

In addition, the cover sheet 150 can be formed by impregnating a fiber yarn with at least one impregnated material selected from a radiator, a magnetic body, an anion body, and a male powder. The cover sheet 150 may be formed using silver-plated fibers for the purpose of releasing far-infrared rays and shielding against electromagnetic wave while antimicrobial effect.

 The temperature sensor 160 is installed between the heating sheet 140 and the cover sheet 150 to detect the temperature of the heating sheet 140 in real time and converts the sensed temperature information to an electric signal To the control unit 190, which will be described later. The temperature sensing sensor 160 may be disposed in contact with the heat line 141 provided in the heat generating sheet 140 to directly measure the temperature of the heat line 141. Preferably, And the temperature of the heat wire cover 145 is measured.

The fan driving unit 170 controls the rotation speed and the rotation direction of the fan 130 and drives the fan 130 according to a control signal of the fan 130 output from a control unit 190 have.

The heating driver 180 controls the heating temperature and the heating duration of the heating sheet 140 and drives the heating sheet 140 according to a heating control signal output from the controller 190 have.

The control unit 190 receives not only the actual temperature information measured by the temperature sensor 160 but also the control signal transmitted from the management terminal unit 20 to be described later and transmits the received actual temperature information to the management terminal unit 20 And controls the fan driving unit 170 and the heating driving unit 180 according to a control signal received from the control terminal unit 20. [

The first communication module 195 transmits the actual temperature information measured by the temperature sensor 160 under the control of the controller 190 as a radio signal and includes a second communication module 210, Communication is possible. The first communication module 195 and the second communication module 210 may apply various wireless communication schemes to enable short-range wireless communication.

The management terminal unit 20 includes a second communication module 210, a display 220, an input unit 230, and a central processing unit 240. In this embodiment, the management terminal unit 20 applies a commonly used smart phone.

The second communication module 210 communicates with the first communication module 195. The second communication module 210 receives the actual temperature information signal transmitted from the first communication module 195 and transmits the actual temperature information signal to a central processing unit, And transmits the control signal transmitted from the central processing unit to the first communication module 195.

The display 220 is capable of displaying actual temperature information received through the second communication module 210 to a user in a numerical value or a level.

The input unit 230 is for setting the temperature of the heat generating sheet 140, and can directly input a user-desired temperature to input the set temperature information.

The central processing unit 240 causes the display 220 to display the actual temperature information signal received through the second communication module 210 and converts the set temperature information inputted through the input unit 230 into a radio signal And controls the second communication module 210 to transmit the second communication module 210. [

The management terminal unit 20 is equipped with a management module 250 for managing the temperature of the seat portion. The management module 250 is installed in the management terminal unit 20 in a structure similar to that of a general application applied to a smart phone, and is operated when a user selects a display mode. In the display mode, And provides a setting mode for

When the user sets the desired temperature in the setting mode after the user executes the management terminal module according to the present invention having the above-described configuration, the control unit 190 of the seat unit 10 controls the heating sheet 140 are controlled to a set temperature by controlling the heat driving unit 180 or the fan driving unit 170 to a predetermined temperature. For example, when the measured temperature measured by the temperature sensor 160 is 30 ° C and the temperature set by the user is 25 ° C, the controller 190 controls the heating driver 140 to turn off the heating sheet 140 And at the same time controls the fan driving unit 170 to cool the heat generating sheet 140. As another example, when the measured temperature measured by the temperature sensor 160 is 25 ° C and the user-set temperature is 30 ° C, the controller 190 may increase the current applied to the heating sheet 140 And controls the heat generating driver 180.

The seat assembly 1 according to the present invention may further include a reinforcing sheet interposed between the ventilation sheet 120 and the heating sheet 140 of the seat unit 10.

The reinforcing sheet has a honeycomb structure in which hexagonal columns are adjacently joined to each other, and a plurality of ventilation holes may be formed in the side surface. The reinforcing sheet has a predetermined strength so as to stably support the heat generating sheet 140 with respect to the ventilation sheet 120 and prevents heat generated in the heat generating sheet 140 from being transmitted to the ventilation sheet 120 It is preferable to be formed of a material having a low thermal conductivity.

In addition, the seat assembly 1 according to the present invention further includes a battery for supplying power to the heat generating sheet 140, the fan 130, etc., and the battery can be charged, A plug and a power supply line are further provided for charging the battery pack. The seat unit 10 may further include a housing or a container for housing the plug and the power connection line.

Meanwhile, the seat assembly 2 according to the present invention may include a seat unit having a structure as shown in FIGS.

5 and 6, the seat unit is installed inside the ventilation sheet 120 to prevent the second ventilation hole 121 of the ventilation sheet 120 from being closed when the user is seated, 120 for guiding air movement from the lower portion of the ventilation sheet 120 to the upper portion of the ventilation sheet 120.

At this time, the ventilation sheet 120 is divided into an upper ventilation sheet and a lower ventilation sheet by being divided in the lateral direction, and an installation space is provided so that a guide unit can be installed therein.

The lower case 310 has an upper portion opened and a plurality of first air holes 311 formed at a bottom of the guide portion in a pattern corresponding to the pattern of the second ventilation hole 121. The upper case 310, An upper case 320 and a lower case 310. The upper case 320 and the lower case 310 are formed with a plurality of second air holes 321 that are upwardly spaced from each other and close the lower case 310 and pass through the upper and lower cases. A guide 330 formed to surround the periphery of the first air hole 311 of the lower case 310 and extending upward by a predetermined length; Closing protrusion 340 for opening and closing the first air hole 321 and the opening and closing protrusion 340 so that the opening and closing protrusion 340 opens the second air hole 321 when the user is seated, In other words, when the user is not seated, The protrusion 340 is provided with a resilient spring 350 that elastically biases the opening and closing projection 340 upwardly to close the second air hole 321.

Since the air supplied to the ventilation sheet 120 by the fan when the user is seated by the user is discharged only in the region corresponding to the shape of the user's hips by the guide portion and is blocked in the other region, There is an effect that the intensity of the discharged air is strong. Further, since the air is discharged only in the area corresponding to the area contacting the seat unit, the air unnecessarily discharged to other areas can be reduced, regardless of the user's sitting in any form.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that various changes and modifications may be made therein without departing from the spirit and scope of the invention as set forth in the appended claims. I will understand that. Therefore, the scope of the true technical protection of the present invention should be determined by the technical idea of the appended claims.

1: Seat assembly
10: Seat unit
110: base plate
120: Ventilation sheet
130: Fan
140: heating sheet
150: Cover sheet
160: Temperature sensor
170:
180:
190:
195: First communication module
20: management terminal unit
210: second communication module
220: Display
230: Input unit
240:
250: Management module

Claims (4)

A base plate having a plurality of first ventilation holes formed in a predetermined area; A ventilation sheet disposed on the base plate, the ventilation sheet being formed of a material having elasticity and having a plurality of second ventilation holes penetrating the upper and lower portions, and having at least one mounting groove at a lower portion thereof; A fan mounted in a mounting groove between the base plate and the ventilation sheet; A heat generating sheet disposed on the ventilation sheet, the heat generating sheet having a predetermined pattern, a heating sheet formed so as to surround the heating line, and capable of passing air passing through the ventilation hole of the ventilation sheet; A cover sheet coupled to wrap the ventilation sheet and the heat generating sheet; A temperature sensor installed between the heating sheet and the cover sheet to sense a temperature of the heating sheet; A fan driving unit for driving the fan; A heating drive unit for driving the heating sheet; A control unit for receiving the measured temperature information measured by the temperature sensor and controlling the fan driving unit and the heating driving unit; And a first communication module for transmitting the temperature information measured by the temperature sensor in a wireless signal under the control of the control unit;
A second communication module for performing communication with the first communication module; A display for displaying actual temperature information received via the second communication module; An input unit for setting the temperature of the heating sheet; And a central processing unit for controlling the set temperature information input through the input unit to be transmitted through the second communication module,
And a guide unit installed inside the ventilation sheet to guide air movement from a lower portion of the ventilation sheet to an upper portion of the ventilation sheet so as to prevent the second ventilation hole of the ventilation sheet from being closed at the time of user's sitting Wherein the sheet assembly further comprises: The method according to claim 1,
Wherein the ventilation sheet includes a pair of topsheets having a predetermined gap therebetween and an intermediate yarn connecting both the topsheets in a space between the both topsheets,
Wherein the topsheet is formed of a mesh structure that forms pores,
Wherein said intermediate yarns are formed of a monofilament material, and both surface sheets are connected in an oblique manner. delete The method according to claim 1,
The lower portion of the guide portion is open and the lower portion is formed with a plurality of first air holes in a pattern corresponding to the pattern of the second ventilation hole formed on the bottom portion. A guide formed to surround the air hole of the lower case between the upper case and the lower case and extending a predetermined length upward; Closing projections for opening and closing the second air holes; and an opening / closing projection provided below the opening / closing projections to open the second air holes when the user is seated, and in other cases, the opening / And an elastic spring for elastically biasing the opening / closing projection upward to close the second air hole Wherein the seat assembly comprises:
KR1020150100651A 2015-07-15 2015-07-15 Seat assembly KR101707157B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150100651A KR101707157B1 (en) 2015-07-15 2015-07-15 Seat assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150100651A KR101707157B1 (en) 2015-07-15 2015-07-15 Seat assembly

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Publication Number Publication Date
KR20170009141A KR20170009141A (en) 2017-01-25
KR101707157B1 true KR101707157B1 (en) 2017-02-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102317797B1 (en) 2021-06-18 2021-10-26 장진수 chair with ventilation function
KR20240073370A (en) 2022-11-18 2024-05-27 장진수 Ventilation chair

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102050963B1 (en) 2017-11-17 2019-12-04 한국생산기술연구원 Chair ventilation and heating

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200412819Y1 (en) * 2005-12-30 2006-04-03 전병섭 ventilation cushion mat

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101054489B1 (en) * 2008-09-23 2011-08-04 (주)광진윈텍 Ventilated seat with front breathable material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200412819Y1 (en) * 2005-12-30 2006-04-03 전병섭 ventilation cushion mat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102317797B1 (en) 2021-06-18 2021-10-26 장진수 chair with ventilation function
KR20240073370A (en) 2022-11-18 2024-05-27 장진수 Ventilation chair

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