Waterproof ceiling

Disclosed herein is a waterproof ceiling. The waterproof ceiling includes a hanger unit secured at an upper end thereof to an existing ceiling to support a load on a lower end. A carrying channel is connected to the lower end of the hanger unit so as to be at right angles with the hanger unit. A drain module bar is connected and secured to a predetermined portion on the carrying channel and forms a predetermined angle with the ground to create a flow passage for leaked water. A waterproof panel is fitted to each of both sides of the drain module bar, thus closing a space between drain module bars. A water collecting pipe is provided horizontally on an end of the drain module bar, thus collecting the leaked water and discharging the water to the outside.

CROSS-REFERENCES TO RELATED APPLICATION

This patent application claims the benefit of priority under 35 U.S.C. §119 from Korean Patent Application No. 10-2009-0040637 filed on May, 11, 2009, the contents of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to a waterproof ceiling and, more particularly, to a waterproof ceiling, which standardizes respective parts to enable the installation of multiple types of structures, avoids spatial restrictions when a pipe, wire, duct, tray and others are installed, and maximizes the circulation of air, thus preventing damage due to the water leakage from a ceiling at a place where expensive equipment is protected or confidential materials are secured.

2. Description of the Related Art

Currently, a lightweight ceiling steel frame for evenly arranging and supporting a ceiling finishing material, a T-BAR, an M-BAR, or a TH-BAR for attaching the finishing material, and a ceiling finishing material such as aluminum, a gypsum board, or Miton are used as the ceiling material of a general building.

Water leakage from a ceiling causes fatal damage to main equipment (server, precision equipment, medical equipment, electronic devices, etc.) and power equipment, and leads to secondary damage such as the loss of information resources, thus resulting in vast damage to property. Particularly, cooling and heating water pipes, fire extinguishing water pipes and other water pipes are installed inside the ceiling surface of a building. Thus, when water leaks from the water pipes in the ceiling of the same floor or an upper floor, the water may cause serious damage to equipment installed under the water pipes.

For example, due to the malfunction of the sprinklers of an upper floor (6F), which is two floors up from the computer room of a security corporation situated on the fourth floor, a flooding accident of the computer room occurred in the year 2000. This accident led to property damage which amounted to several tens of billions of won and the interruption of security exchange services. As is known from the example, the leakage of water or the malfunction of equipment can cause serious trouble related to information which is the main resource of an information society and the function of a building, for example, the server of a computer room, the computerized information of a bank, the power equipment of a building, and expensive medical equipment, thus causing damage to customers, members, and consumers.

In order to solve the problem and prevent the leakage of water, the construction work of removing the water pipes from the ceiling, installing a gas extinguishing system, and waterproofing the bottom of an upper floor has been performed. However, conducting the work is in most cases impossible because there are few cases where the upper floor is empty. Although waterproofing is possible, it is substantially impossible to prevent the leakage of water to a fan coil pipe, an outlet box and other gaps. Even if the passage of water to the fan coil pipe, outlet box and other gaps is prevented, it is difficult to get rid of water spread out broadly in a horizontal direction within a short period of time.

In order to solve the problem, Korean U.M. Registration No. 264930, which is entitled “Auxiliary Appliance for Detecting Water Leakage from Ceiling”, has been proposed. The auxiliary appliance includes a plurality of waterproof assemblies joined together so as to prevent water from leaking out of the entire area of a ceiling. A hanger frame secures each waterproof assembly to the back of concrete while maintaining a predetermined space for installing equipment. A drain pipe is mounted to the side edge of each waterproof assembly to drain leaked water. A plurality of water leakage sensors is secured to each waterproof assembly at regular intervals, thus generating an electric detection signal when a predetermined amount of water is detected. An alarm unit is embedded in each waterproof assembly, and transmits a warning sound to a manager, in response to the detected signal. In order to waterproof a ceiling surface, auxiliary waterproofing materials are layered up.

However, the conventional waterproofed ceiling is problematic in that a plurality of waterproof reinforcing materials is layered in each waterproof assembly, so that the weight of the ceiling increases, thus making it difficult to construct and increasing construction cost. Further, this ceiling is problematic in that, when an excessive amount of water leaks from an upper ceiling, the ceiling surface does not bear the weight of water, so that the ceiling surface tends to be destroyed or sag down.

As another technology, Korean patent No. 10-0702847, which is entitled “Light-weight Double Ceiling Structure for Preventing Passage of Water and Dust”, has been laid open. The double ceiling structure requires a two-stage height to install the structure in a ceiling, so that it is impossible to apply the double ceiling structure if there is no extra space in the ceiling. Further, the double ceiling structure is problematic in that a hanger unit passes through a waterproof ceiling surface, so that perfect waterproofing is limited, and it is impossible to check the interior of the ceiling after the double ceiling structure was constructed, and it is inconvenient to assemble and construct.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a waterproof ceiling, which standardizes respective parts to allow the parts to be easily assembled and installed, provides multiple types of structures to enable equipment such as a pipe, wire, duct, or tray to be easily arranged without regard to spatial limitations, and provides an additional space between an upper waterproof ceiling surface and a lower general ceiling surface to be utilized as the passage for air circulation, thus keeping the indoor environment pleasant.

In order to accomplish the above object, the present invention provides a waterproof ceiling, including a hanger unit which is secured at an upper end thereof to a predetermined portion of an existing ceiling to support load on a lower end, a carrying channel which is connected to the lower end of the hanger unit so as to be at right angles with the hanger unit, a drain module bar which is connected and secured to a predetermined portion on the carrying channel and forms a predetermined angle with the ground to create a flow passage for leaked water, a waterproof panel which is fitted to each of both sides of the drain module bar, thus closing a space between drain module bars, and a water collecting pipe which is provided horizontally on an end of the drain module bar, thus collecting the leaked water and discharging the water to an outside.

The hanger unit may include a hanger bolt which is connected to a concrete anchor secured to the ceiling wall or a puzzle anchor secured to a groove-shaped rail which is formed in the lower end of the drain module bar, and a suspending hanger which is connected to an end of the hanger bolt to support the carrying channel or the drain module bar at a lower position.

The drain module bar may include a sidewall which is bent at both ends thereof outwards and has at an upper end thereof a sealing groove so that a sealing member is inserted into the sealing groove, a fitting groove which is formed inside the sidewall such that each of both ends of the waterproof panel is fitted into the fitting groove, and a groove-shaped rail which is provided in an outer surface of a bottom closing off lower ends of both sides of the sidewall so that the puzzle anchor is inserted into the rail.

The drain module bar may further include a wing which protrudes from the lower end of each of both sides of the sidewall to allow a finishing member or a sound absorbing board to be fitted to the wing. The sound absorbing board can be made of textile or other materials, such as a gypsum, glass, or mixture thereof.

A stopper may be provided at a junction of the sidewall with the fitting groove, thus adjusting a depth to which each of both ends of the waterproof panel is inserted into the fitting groove. An inverted hanger provided at a position on the carrying channel or a module bar hanger secured to the hanger bolt connected to the carrying channel by the suspending hanger may be inserted into a hanger insert hole formed inside the sidewall of the drain module bar.

The drain module bar may be joined with a neighboring drain module bar by a module-bar fitting panel bent at both side ends thereof or an outer coupling bar formed to cover an outer portion of the drain module bar.

Further, the drain module bar may be joined with a neighboring drain module bar by a module-bar fitting panel bent at both side ends thereof or a module-bar joint panel fitted into a panel fitting part formed on an outer portion on each of upper and lower ends of the sidewall of the drain module bar. The drain module bar may form an angle from 0.3° to 2° with the ground.

The waterproof panel may include a lower waterproof panel having a fitting projection which extends downwards from each of both ends of the lower waterproof panel to be fitted into the fitting groove of the drain module bar and a connector which protrudes in a direction opposite to the fitting projection, an upper waterproof panel having a fitting projection which extends downwards from each of both ends of the lower waterproof panel to be fitted into the fitting groove of the drain module bar and a connector insert part which protrudes in a direction opposite to the fitting projection and is bent to receive the connector, and a horizontal waterproof panel closing off a space between neighboring drain module bars and allowing an additional member to be inserted into the horizontal waterproof panel.

The connector of the lower waterproof panel may be inserted into the connector insert part of the upper waterproof panel to provide a coupling part, thus preventing water collected in the waterproof panel from escaping out.

The puzzle anchor may be inserted into the rail formed in the lower end of the drain module bar to allow a hanger bolt to be connected thereto, and a channel part may be provided between hanger bolts to enable a tray, pipe or duct to be loaded thereon.

The hanger unit may be additionally inserted into the rail formed in the lower end of the drain module bar to allow a T-BAR, TH-BAR, M-BAR or module bar to be connected to an end of the hanger unit, and a finishing member may be installed between T-BARs, TH-BARs, M-BARs or module bars.

Further, hotter indoor air may circulate to a side through a space between the drain module bar and the finishing member, and air cooled by a thermo-hygrostat may be supplied through a bottom of a room into the room.

A sound absorbing board may be further provided on an inner surface of the finishing member to absorb noise. The T-BAR, TH-BAR, M-BAR or module bar may be connected to the carrying channel provided on an end of the hanger unit using a locking clip.

As described above, the present invention provides a waterproof ceiling, which is manufactured by assembling standardized parts, thus allowing a single-layered or multi-layered structure to be easily installed, allowing a broken part to be easily replaced with a new one, therefore reducing maintenance costs, and allowing equipment such as a pipe, wire, duct or tray to be arranged without regard to spatial restrictions. Further, the waterproof ceiling has multiple types of structures to secure an additional space which is utilized as the passage for air circulation, thus keeping the indoor environment pleasant, and allowing indoor air to be easily heated or cooled. Further, the waterproof ceiling prevents impurities including dust from entering a room, thus preventing precision equipment from being broken or damaged, in addition to keeping the indoor environment pleasant.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, waterproof ceiling according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terminologies used in the description and the claims of the present invention are widely used in the field of a construction material, and will be described in detail when necessary.

FIG. 1is a perspective view illustrating a base-type waterproof ceiling, which is one embodiment of a waterproof ceiling according to the present invention,FIG. 2is a partial bottom perspective view illustrating the base-type waterproof ceiling, andFIG. 3is a partial top perspective view illustrating the base-type waterproof ceiling. Further,FIG. 4is a partial top perspective view illustrating the base-type waterproof ceiling ofFIG. 3to which a water collecting pipe is added, andFIG. 5is a side sectional view ofFIG. 2.

Referring toFIGS. 1 to 5, a base-type waterproof ceiling according to one embodiment of the present invention includes a hanger unit110, a carrying channel116, a base-type drain module bar120, a waterproof panel140, and a water collecting pipe180. The hanger unit110is secured at an upper end thereof to a predetermined portion on a ceiling wall, and is placed perpendicularly to the ground to bear a load on the lower end applied by other ceiling parts. The carrying channel116is connected to the lower end of the hanger unit110and placed parallel to the ground in such a way as to be perpendicular to the hanger unit110. The base-type drain module bar120is connected and secured to a portion on the carrying channel116, and makes a predetermined angle with the ground to form the flow passage of water leaking from a ceiling. The waterproof panel140is fitted to each of both sides of the base-type drain module bar120and closes a space between neighboring drain module bars120. The water collecting pipe180is provided vertically on one end of the base-type drain module bar120, thus collecting the leaked water and discharging the leaked water to the outside.

The hanger unit110includes a hanger bolt112and a suspending hanger114. The hanger bolt112is connected to a concrete anchor111secured to the ceiling wall. The suspending hanger114is connected to one end of the hanger bolt112so as to support the base-type drain module bar120under the suspending hanger114. Here, the suspending hanger means a member which is bent to couple specific parts to each other.

FIG. 6is an exploded perspective view of the base-type drain module bar120, andFIG. 7is a side sectional view illustrating the base-type drain module bar120ofFIG. 6. The base-type drain module bar120ofFIGS. 1 through 5is shown in detail inFIGS. 6 and 7. Referring to the drawings, the base-type drain module bar120includes a sidewall120-1, fitting grooves120-6, and a rail120-3. The sidewall120-1is bent at both ends thereof outwards, so that sealing grooves120-8are formed in the upper bent ends, thus permitting sealing members120-9to be inserted into the sealing grooves120-8. The fitting grooves120-6are formed inside the sidewall120-1so that both ends of the waterproof panel140are fitted into the fitting grooves120-6. The groove-shaped rail120-3is provided in the outer surface of a bottom120-4which closes the lower ends of both sides of the sidewall120-1, so that an additional puzzle anchor is inserted into the groove-shaped rail120-3. Further, the drain module bar120also includes wings120-2and stoppers120-5. The wings120-2protrude from the lower ends of both sides of the sidewall120-1so that a finishing member190or a sound absorbing board185is fitted to each wing120-2. The stopper120-5is provided at the junction of the sidewall120-1and the fitting groove120-6.

Here, the stopper120-5can adjust a depth to which both ends of the waterproof panel140are inserted into the fitting grooves120-6. That is, if each stopper120-5is provided at a deep position, both ends of the waterproof panel140may deeply enter the fitting grooves120-6. On the other hand, if each stopper120-5is provided at a shallow position, the insert depth of both ends of the waterproof panel140is relatively small.

The base-type drain module bar120may be installed by inserting a module bar hanger119secured to an inverted hanger118provided at a position on the carrying channel116into hanger insert holes120-7formed inside the sidewall120-1of the base-type drain module bar120. Here, the module bar hanger119is perpendicularly connected to the inverted hanger118and is almost parallel to the ground. Both ends of the module bar hanger119are bent to be easily inserted into the hanger insert holes120-7. Support bars120-13are provided on the bottoms of the hanger insert holes120-7, thus preventing both ends of the module bar hanger119from being easily removed from the hanger insert holes120-7.

The finishing member190secured by the wings120-2of the base-type drain module bar120includes an aluminum ceiling plate, a gypsum board, Miton, synthetic resin, and others.

Referring toFIG. 6, a plurality of the base-type drain module bars120is joined together by a module-bar fitting panel126which is bent at both side ends, or a module-bar joint panel124inserted into panel fitting parts120-10formed in the outer portions on the upper and lower ends of the sidewall120-1of the base-type drain module bar120. The module-bar fitting panel126serves to join the base-type drain module bars120with each other while supporting the inner space of each drain module bar120. The module-bar joint panel124serves to join the base-type drain module bars120with each other while supporting each of both sides of the drain module bar120.

The base-type drain module bar120is installed to form an angle from about 0.3° to 2° with the ground. The base-type drain module bar120is designed according to a place, size and construction to be waterproofed, thus allowing water leaking out of the ceiling to be rapidly discharged. The length and shape of the base-type drain module bar120may be changed according to the inner space in which the bar120is to be installed, as long as the leaked water is rapidly drained.

FIG. 8is a view illustrating the coupling of the waterproof panel140according to the present invention. Referring toFIGS. 1 through 8, the waterproof panel140includes a lower waterproof panel144, an upper waterproof panel142, and a horizontal waterproof panel145. The lower waterproof panel144includes fitting projections146which are provided on both ends of the panel144in such a way as to extend downwards and are fitted into the fitting grooves120-6of the base-type drain module bar120, and connectors149which protrude upwards to be opposite to the fitting projections146. The upper waterproof panel142includes fitting projections146which are provided on both ends of the panel144in such a way as to extend downwards and are fitted into the fitting grooves120-6of the base-type drain module bar120, and connector insert parts143which protrude in the direction opposite to the fitting projections146and are bent to receive the connectors149. The horizontal waterproof panel145closes a space between the base-type drain module bars120, and permits an additional member to be inserted therein. Particularly, a coupling part148, formed by inserting each connector149of the lower waterproof panel144into the connector insert part143of the upper waterproof panel142, doubly prevents the leakage of water, thus preventing water gathered in the waterproof panel140from leaking out.

The fitting projection146is at right angles with the connector149or the connector insert part143, and the connector149and the connector insert part143are parallel to each other. The coupling part148is formed and a space between the base-type drain module bars120is closed through continuous fitting.

Various materials including PVC, polycarbonate, and aluminum, coated materials having high waterproof effects, and combinations thereof may be used as the material of the waterproof panel140.

The water leakage preventing function of the base-type waterproof ceiling illustrated inFIGS. 1 to 8is as follows. That is, water leaking from the ceiling or water generated by the cohesion of steam generated due to a difference in temperature flows along the waterproof panel140to be gathered in the base-type drain module bar120. After the water flows along the space A ofFIG. 7and is collected in the water collecting pipe180provided on an end of the drain module bar120, the water is discharged to the outside through a drain pipe182provided at a predetermined position on the water collecting pipe180.

In the course of the drainage, the leakage of water never occurs in gaps between respective parts of the waterproof panel140, that is, the upper waterproof panel142, the lower waterproof panel144, and the horizontal waterproof panel145. The water is forced to one side by the base-type drain module bar120which is inclined at a predetermined angle, preferably, 0.3° to 2°, and is easily guided to the outside.

An additional material is added to the base-type waterproof ceiling, thus providing an equipment-type waterproof ceiling or an air conditioning-type waterproof ceiling. Herein, the base-type structure means a general structure for finishing a ceiling without a specific function, and the equipment-type means a structure which is provided with equipment to provide a specific function to the base-type structure. Further, the air conditioning-type structure means a structure which has additional equipment to form flow passages for air.

Hereinafter, the equipment-type waterproof ceiling will be described in detail.FIG. 9is a partial perspective view illustrating an equipment-type waterproof ceiling according to another embodiment of the present invention,FIG. 10is a side sectional view ofFIG. 9,FIG. 11is an exploded perspective view of an equipment-type drain module bar, andFIG. 12is a side sectional view illustrating the equipment-type drain module bar ofFIG. 11.

Referring toFIGS. 9 to 12, the equipment-type waterproof ceiling according to another embodiment of the present invention includes a hanger unit210, a carrying channel216, an equipment-type drain module bar220, a waterproof panel240, and a water collecting pipe280. The hanger unit210is secured at an upper end thereof to a predetermined portion on a ceiling wall, and is placed perpendicularly to the ground to bear a load on the lower end applied by other ceiling parts. The carrying channel216is connected to the lower end of the hanger unit210and placed parallel to the ground in such a way as to be perpendicular to the hanger unit210. The equipment-type drain module bar220is connected and secured to a portion on the carrying channel216, and makes a predetermined angle with the ground to form the flow passage of water leaking from a ceiling. The waterproof panel240is fitted to each of both sides of the equipment-type drain module bar220and closes a space between neighboring drain module bars220. The water collecting pipe280is provided vertically on one end of the equipment-type drain module bar220, thus collecting the leaked water and discharging the leaked water to the outside. The water collected in the water collecting pipe280can be easily discharged through a drain pipe282to the outside.

The hanger unit210includes a hanger bolt212and a suspending hanger214. The hanger bolt212is connected to a concrete anchor211secured to the ceiling wall. The suspending hanger214is connected to one end of the hanger bolt212so as to support the equipment-type drain module bar220under the suspending hanger214. Here, the suspending hanger means a member which is bent to couple specific parts to each other.

The equipment-type drain module bar220includes a sidewall220-1, fitting grooves220-6, and a rail220-3. The sidewall220-1is bent at both ends thereof outwards, so that sealing grooves220-8are formed in the upper bent ends, thus permitting sealing members220-9to be inserted into the sealing grooves220-8. The fitting grooves220-6are formed inside the sidewall220-1so that both ends of the waterproof panel240are fitted into the fitting grooves220-6. The groove-shaped rail220-3is provided in the outer surface of a bottom220-4which closes the lower ends of both sides of the sidewall220-1, so that an additional puzzle anchor is inserted into the groove-shaped rail220-3.

The equipment-type drain module bar220is different in shape from the above-mentioned base-type drain module bar120. That is, when comparingFIGS. 6 and 7withFIGS. 11 and 12, the base-type drain module bar120has the wings120-2to allow an additional finishing member to be mounted thereto, whereas the equipment-type drain module bar220has no wings. Further, in order to continuously join the base-type drain module bars120to each other, the module-bar fitting panel126and the module-bar joint panel124are provided. Especially, the module-bar joint panel124is fitted into the panel fitting part120-10formed on the end of the base-type drain module bar120, thus allowing the base-type drain module bars120to be continuously joined together. In contrast, equipment-type drain module bars220are joined together by a module-bar fitting panel265which is bent at both sides and an outer coupling bar260which is formed to cover the outer portion of the drain module bar220. That is, since the equipment-type drain module bar220has no wings, the equipment-type drain module bars220are continuously joined together using the outer coupling bar260which is formed to cover the outer portion of the equipment-type drain module bar220. Except for that difference, the main parts of the equipment-type drain module bar220, including the sealing members220-9, the sealing grooves220-8, the fitting grooves220-6, the hanger insert holes220-7, the support bars220-13, the rail220-3, the bottom220-4, the panel fitting parts220-11, and the stoppers220-5have the same function as the corresponding parts of the base-type drain module bar120.

The equipment-type drain module bar220is installed to form an angle from about 0.3° to 2° with the ground. The equipment-type drain module bar220is designed according to a place, size and construction to be waterproofed, thus allowing water leaking out of the ceiling to be rapidly discharged. The length and shape of the equipment-type drain module bar220may be changed according to the inner space in which the bar220is to be installed, as long as the leaked water is rapidly drained.

Water leaking from the ceiling or water generated by the cohesion of steam generated due to a difference in temperature flows along the waterproof panel240to be gathered in the equipment-type drain module bar220. After the water flows along the space B ofFIG. 12and is collected in the water collecting pipe280provided on an end of the drain module bar220, the water is discharged to the outside through a drain pipe282provided at a predetermined position on the water collecting pipe280.

Since the waterproof panel240used in the equipment-type waterproof ceiling has the same shape and function as the waterproof panel used in the base-type waterproof ceiling, the waterproof panel240will not be described herein.

In the equipment-type waterproof ceiling, a hanger bolt272is additionally connected to the rail220-3provided in the lower end of the equipment-type drain module bar220, using a puzzle anchor270, and a channel part278is provided between hanger bolts272to enable a tray295, pipe or duct297to be additionally loaded thereon.

An additional construction material is installed to the equipment-type waterproof ceiling, thus providing the air conditioning-type waterproof ceiling having an air flow passage.

FIG. 13is a partial perspective view illustrating an air conditioning-type waterproof ceiling, which is a further embodiment of the waterproof ceiling according to the present invention,FIG. 14is a side sectional view ofFIG. 13,FIG. 15is an exploded perspective view of an air conditioning-type drain module bar, andFIG. 16is a side sectional view illustrating the air conditioning-type drain module bar ofFIG. 15.

Referring toFIGS. 13 to 16, the air conditioning-type waterproof ceiling which is a further embodiment of the waterproof ceiling according to the present invention includes hanger units310,410and510, carrying channels316and416, an air conditioning-type drain module bar320, a waterproof panel340, and a water collecting pipe380. Each hanger unit is secured at an upper end thereof to a predetermined portion on a ceiling wall or the waterproof ceiling, and is placed perpendicularly to the ground to bear a load on the lower end applied by other ceiling parts. The carrying channels316and416are connected, respectively, to the lower ends of the hanger units310and510and placed parallel to the ground in such a way as to be perpendicular to the hanger units310and510. The air conditioning-type drain module bar320is connected and secured to a portion on each of the carrying channels316and416, and makes a predetermined angle with the ground to form the flow passage of water leaking from a ceiling. The waterproof panel340is fitted to each of both sides of the air conditioning-type module bar320and closes a space between neighboring drain module bars320. The water collecting pipe380is provided vertically on one end of the air conditioning-type drain module bar320, thus collecting the leaked water and discharging the leaked water to the outside. The water collected in the water collecting pipe380can be easily discharged through a drain pipe382to the outside.

The first hanger unit310includes a first hanger bolt312and a first suspending hanger314. The first hanger bolt312is connected to a concrete anchor311secured to the ceiling wall. The first suspending hanger314is connected to one end of the first hanger bolt312so as to support the first carrying channel316at a lower position. The second hanger unit410includes a second suspending hanger414and a second hanger bolt412. The second suspending hanger414is secured to the first carrying channel316. The second hanger bolt412is connected at one end thereof to the second suspending hanger414to support the air conditioning-type drain module bar320at a lower position. The third hanger unit510includes a third hanger bolt512and a third suspending hanger514. The third hanger bolt512is connected to a puzzle anchor370secured to the rail320-3which is provided in the lower portion of the air conditioning-type drain module bar320. The third suspending hanger514is connected to one end of the third hanger bolt512so as to support the second carrying channel416at a lower position.

As shown inFIGS. 15 and 16, air conditioning-type drain module bar320includes a sidewall320-1, fitting grooves320-6, and a rail320-3. The sidewall320-1is bent at both ends thereof outwards, so that sealing grooves320-8are formed in the upper bent ends, thus permitting sealing members320-9to be inserted into the sealing grooves320-8. The fitting grooves320-6are formed inside the sidewall320-1so that both ends of the waterproof panel340are fitted into the fitting grooves320-6. The groove-shaped rail320-3is provided in the outer surface of a bottom320-4which closes the lower ends of both sides of the sidewall320-1, so that the additional puzzle anchor370is inserted into the groove-shaped rail320-3. The module bar hanger319, secured to the second hanger bolt412connected to the first carrying channel316by the second suspending hanger414, is inserted into the hanger insert holes320-7which are formed inside the sidewall320-1.

Since the main parts of the air conditioning-type drain module bar320illustrated inFIGS. 15 and 16, including the sealing members320-9, the sealing grooves320-8, the fitting grooves320-6, the hanger insert holes320-7, the support bars320-13, the rail320-3, the bottom320-4, the panel fitting parts320-11, and the stoppers320-5, have the same function and shape as the corresponding parts of the equipment-type drain module bar220, the detailed description will be omitted herein. Similarly to the equipment-type drain module bar220, air conditioning-type drain module bars320are joined together by a module-bar fitting panel365which is bent at both sides thereof or an outer coupling bar360which is formed to cover the appearance of the air conditioning-type drain module bar320.

The air conditioning-type drain module bar320is installed to form an angle from about 0.3° to 2° with the ground. The air conditioning-type drain module bar320is designed according to a place, size and construction to be waterproofed, thus allowing water leaking out of the ceiling to be rapidly discharged. The length and shape of the air conditioning-type drain module bar320may be changed according to the inner space in which the bar320is to be installed, as long as the leaked water is rapidly drained.

Water leaking from the ceiling or water generated by the cohesion of steam generated due to a difference in temperature flows along the waterproof panel340to be gathered in the air conditioning-type drain module bar320. After the water flows along the space C ofFIG. 16and is collected in the water collecting pipe380provided on an end of the drain module bar320, the water is discharged to the outside through a drain pipe382provided at a predetermined position on the water collecting pipe380.

Since the waterproof panel340used in the air conditioning-type waterproof ceiling has the same shape and function as the waterproof panel used in the equipment- or base-type waterproof ceiling, the waterproof panel340will not be described herein.

In the case of the air conditioning-type waterproof ceiling, the third hanger unit510having the third hanger bolt512and the third suspending hanger514is additionally inserted into the rail320-3which is provided in the lower surface of the air conditioning-type drain module bar320, a T-BAR, TH-BAR, M-BAR550or module bar530is connected to an end of the third hanger unit510, and a finishing member390is installed between T-BARs, TH-BARs, M-BARs550or module bars530. Here, a sound absorbing board385may be further provided on the inner surface of the finishing member390to absorb noise.

The T-BAR, TH-BAR, M-BAR550or module bar530is connected to the second carrying channel416provided on an end of the third hanger unit510by the locking clip535.

FIG. 17is a view illustrating the use of the air conditioning-type waterproof ceiling. In the course D ofFIG. 17, air heated by an indoor device circulates through a space between the finishing member390and the air conditioning-type drain module bar320in the air conditioning-type waterproof ceiling. The heated air flows to a side by an additional suction pump, and is cooled by a thermo-hygrostat connected to the pump. The cooled air is supplied to a room through an additional hole formed in the bottom of the room. The circulation of air along the course D is repeated, thus keeping the indoor environment pleasant.

By changing the positions where the air conditioning-type drain module bar320and the finishing member390are installed, the length of the course over which the air flows can be increased or reduced.

As described above, the present invention provides a waterproof ceiling including a base-type, an equipment-type and an air conditioning-type structures, which is manufactured by assembling standardized parts, thus allowing a single-layered or multi-layered structure to be easily installed, allowing a broken part to be easily replaced with a new one, and allowing equipment such as a wire, a drain duct or a gas pipe to be arranged without regard to spatial restrictions. Further, the waterproof ceiling provides multiple types of structures to secure an additional space for smooth circulation of air, thus keeping the indoor environment pleasant, and allowing indoor air to be easily heated or cooled. Further, the waterproof ceiling prevents dust from entering a room, thus providing reliable indoor environment (computer environment).