KR20140003778U - Multifuntional potable light emitting diode lighting apparatus enabled penitration through smoke - Google Patents

Abstract

A portable LED illumination device is disclosed. The disclosed illumination device includes a head portion including an LED for illumination; A plurality of signal LEDs, a plurality of LEDs for displaying remaining battery power, and a control circuit for controlling each of the devices, wherein the housing includes a housing in which the head portion is rotatably coupled, A main PCB including a main PCB mounted thereon; A connection part detachably coupled to a lower end of the housing of the body part and having a charging port; And a battery mounting part detachably coupled to a lower end of the connection part and having a battery mounted therein.

Description

[0001] MULTIFUNCTIONAL POTABLE LIGHT EMITTING DIODE LIGHTING APPARATUS ENABLED PENITRATION THROUGH SMOKE [0002]

The present invention relates to an LED (Light Emitting Diode) lighting apparatus, and relates to a portable LED lighting apparatus used in a fire suppression, life saving, or disaster relief operation.

In the case of fire suppression, human life or disaster relief work, the operator has a portable lighting device formed in the longitudinal direction so as to be easily grasped and put into the field.

The lighting device includes a clip member for fixing the lighting device to the clothes so that both hands can be freely used when working in the field, and the head portion having the illumination lamp is fixedly formed at a right angle to the main body.

However, in the conventional portable lighting apparatus, since the head unit is fixed type, it is impossible to change the angle of illumination. Further, since the illumination lamp adopts a common small bulb, there is a problem that smoke can not be seen. The device is not waterproof and has no function to notify the surroundings when the operator is in danger in the field, so there is a functional restriction that can not be applied to lifesaving.

The object of the present invention is to provide a portable LED which can illuminate the smoke generated by a fire, can set a wide angle of illumination of the head part, has a waterproof effect, detects a dangerous state of a user, And to provide a lighting device.

In order to achieve the above object, the present invention provides a light emitting diode comprising: a head portion including an LED for illumination; A plurality of signal LEDs, a plurality of LEDs for displaying remaining battery power, and a control circuit for controlling each of the devices, wherein the housing includes a housing in which the head portion is rotatably coupled, A main PCB including a main PCB mounted thereon; A connection part detachably coupled to a lower end of the housing of the body part and having a charging port; And a battery mounting part detachably coupled to a lower end of the connection part and having a battery mounted therein.

An angle adjusting unit for adjusting the angle of the head unit is disposed between the left and right sides of the head unit and the left and right sides of the housing. The angle adjusting unit is integrally formed with the head unit, A gear portion; A stopper slidably inserted into a straight groove formed in a receiving groove of the head portion, the stopper being selectively engaged with the gear teeth of the gear portion according to the rotation of the head portion; And a coil spring disposed in the straight groove and elastically supporting the stopper to press the stopper toward the gear portion.

It is preferable that the angle from the position P1 to the maximum rotation position P2 coaxially arranged with the main body portion is 105 deg.

The main body includes a first operation button for turning on / off the plurality of signal LEDs; A second operation button for turning on / off the plurality of remaining battery level LEDs; And a third operation button for turning on / off the laser pointer, wherein the color change of the plurality of signal LEDs is controlled according to the number of times of pressing the first operation button, and the second operation button is operated according to the number of times of pressing Any one of the plurality of battery remaining amount display LEDs can be separately controlled to be blinked.

The microprocessor according to claim 1, further comprising a vibration sensor and a speaker on the body, wherein the third operation button is switched to a safe mode according to the number of times the button is pressed, If it is not detected, the speaker can be operated to generate an alarm sound.

Wherein the first to third operation buttons are respectively covered by first to third button cover members detachably coupled to the main body part, wherein the first to third button cover members are formed of a double- It may have an injection structure.

A filter hammer selectively removably fastened to the head portion and the lower end of the battery mounting portion; A retaining ring screwed into the filter hammer; And a filter unit including a filter fixed to the filter hammer by the fixing ring, wherein the smoke filter has a yellow-amber color, a transmittance of 620 nm and a UV- And may be made of tempered glass.

The main body may be provided with an ultraviolet lamp having a wavelength of 215 to 400 nm for counterfeiting.

The main body may further include a camera module for recording an image and a micro microphone for recording voice.

A seal member that is coupled to an insertion hole of the head portion that is drawn out from the main body portion and penetrates a wiring leading into the head portion; And a fixing screw threadably engaged with the head portion to prevent the seal member from being separated from the insertion hole, wherein the seaming member is fixed to the head portion when the fixing screw is engaged with the head portion, The seal member can be pressed so that the portion protruded by the inclined surface of the seed part material is pressed, and the seed part material is pressed and sealed in the insertion hole as it extends in the circumferential direction.

Wherein the signal LED and the battery remaining amount LED are respectively covered by a light guide plate and a cover member detachably coupled to the main body part and the light guide plate and the cover member are sealed .

As described above, in the present invention, it is possible to freely set the rotation angle within the range of the angle of the head portion for illumination to 75 to 180 degrees. In addition, in the safety mode, the vibration sensor senses the movement of the user and can generate an alarm sound through the speaker. In addition, waterproofing is performed for the head portion through which the wiring passes, the penetrating portion of the main body portion, and the respective assembled portions of the lighting device, thereby improving the function expansion and reliability of the product.

1 is a perspective view showing a portable LED lighting apparatus according to an embodiment of the present invention.
FIGS. 2 and 3 are perspective views showing the portable LED lighting device with the filter portion removed in FIG. 1 from the front and the rear. FIG.
4 is an exploded perspective view showing the head portion shown in Fig.
Fig. 5 is a perspective view showing the rear portion of the head portion shown in Fig. 1. Fig.
6 is a schematic view showing an angle adjusting portion for adjusting the angle of the head portion.
7A and 7B are exploded perspective views showing the body portion shown in Fig.
8 is a perspective view showing the inside of the housing shown in Fig. 7A.
FIG. 9 is a perspective view showing a filling port and a waterproof cap formed in the connection portion shown in FIG. 7B.
10 is an exploded perspective view showing the battery mounting portion shown in Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the embodiments described below are provided for illustrative purposes only, and it is to be understood that the present invention may be embodied with various changes and modifications that may be made therein without departing from the spirit and scope of the invention. In the following description of the present invention, the detailed description and specific examples are omitted when it is determined that a detailed description of related functions or components may unnecessarily obscure the gist of the present invention. In addition, the accompanying drawings are not necessarily drawn to scale in order to facilitate understanding of the present invention, but the dimensions of some of the components may be exaggerated.

1 to 3, a portable LED (Light Emitting Diode) lighting apparatus 10 according to an embodiment of the present invention includes a head part 100, a body part 300, and a ballistic mounting part 500 do.

The head unit 100 includes an illumination LED 111 (see FIG. 4) and a heat sink case 110 for efficiently discharging the heat emitted from the illumination LED 111 to the outside.

The heat sink case 110 is installed in the receiving groove 311 formed in the upper portion of the housing 310 of the body portion 300 and extends from the first position P1 arranged coaxially with the body portion 300 2 to the second position P2, which is perpendicular to the main body 300, as shown in Fig.

4, the heat sink case 110 includes a metal printed circuit (PCB) 113 on which an LED 111 is mounted in a space 110a provided on the inner side of the heat sink case 110, A heat sink 115 for contacting the metal PCB 113 to the heat sink case 110 and a heat sink 115 disposed on the front surface of the metal PCB 113 for reflecting the light emitted from the LED 111 toward the front side, The reflection plate 120 is disposed.

A head cap 133 having a tempered glass 131 for protecting the LED 111 is screwed to the tip of the conical reflector 120. A first fixing ring 135 for fixing the tempered glass 131 to the head cap 133 is fastened to the inside of the head cap 133. In this case, an anti-vibration ring 137 is disposed between the tip of the conical reflector 120 and the fixing ring 135 to absorb the impact transmitted to the tempered glass 131.

A filter unit 140 capable of emitting smoke is detachably disposed in front of the head cap 133.

The filter unit 140 is coupled to the tip end portion of the head cap 133 by a screw fastening method, with a filter hammer 143 having a smoke sighting filter 141. In this case, a second fixing ring 145 for fixing the smoke filtering filter 141 to the filter hammer 143 is fastened to the inside of the filter hammer 143.

The smoke filtering filter 141 has a yellow-based color, for example, a yellow-amber color, and has a wavelength of about 620 nm which is high in transmittance to smoke, dust, and fog. In addition, the smoke filtering filter 141 may be made of UV-coated impact resistant glass.

And is detachably press-coupled to the filter protection cap 150 at the front of the filter hammer 143. In this case, it is preferable that the filter hammer 143 is made of aviation aluminum having a strength and a light weight enough to break the glass so that the user can escape from the danger zone in a similar situation. Also in the case of the head cap 133 described above, it can be similarly manufactured by aviation aluminum.

The filter protection cap 150 is preferably made of a rubber material so as to effectively absorb the impact from the outside.

The filter unit 140 may be fastened to the head cap 133 and may be fastened to the lower end portion 550 of the battery loading unit 500 in a threaded manner when not in use.

5, the head portion 100 is formed with an insertion hole 110a through which a wiring L drawn out from the main body 300 is drawn. A seal member 171 for waterproofing is detachably inserted into the insertion hole 110a and the fixing nut 173 is fastened so that the seal member 171 is not separated from the insertion hole 110a. In this case, the seal member 171 and the fixing nut 173 are respectively formed with through holes 171a and 173a through which the wiring L passes.

When the fixing screw 173 is pressed into the insertion hole 110a and the fixing screw 173 is rotated to press the seal member 171, the seal member 171 is pressed while the protruded portion is pressed by the inclined surface, So that the insertion hole 110a is completely sealed and waterproofed.

5 and 6, the head unit 100 can be changed to a desired angle within a predetermined angle range by the angle adjusting unit 160 formed symmetrically on the right and left sides. That is, as shown in FIG. 2, the head portion 100 is capable of adjusting the fine angle within an angular range? 2 of approximately 75 to 180 degrees. In this case, the angular range? 2 is 105 ° which is an angle from the position P1 where the head unit 100 is coaxially arranged with the main body unit 300 to the maximum rotatable position P2.

The angle adjuster 160 includes a gear portion 161, a stopper 163, and a coil spring 165.

The gear portion 161 is integrally formed with the head portion 161 and a plurality of gear teeth 161a are continuously formed along one circumference. The gear portion 161 is hingably inserted into the recessed portion 312 formed on the left and right inner sides of the housing 310. The gear portion 161 is formed at its center with a hinge hole 161b to which the hinge screw 168 is fastened and the hinge screw 168 is inserted into the fastening hole 313 formed at the right and left sides of the housing 310 . In this case, waterproof grooves 315 for joining the sealing member 169 are formed on the left and right sides of the housing 310, as shown in FIG. 7A, for waterproofing the fastening holes 313. The fine angle of the rotation angle of the head part 100 can be adjusted according to the length of the pitch of the gear teeth 161a of the gear part 161. For example, as the pitch of the plurality of gear teeth 161a is narrowed, the head portion 100 can be fixed at a finer angle.

The stopper 163 is slidably inserted into the straight groove 316 communicating with the lower side of the recessed portion 312. The stopper 163 is formed on the upper surface with a locking protrusion 164 that engages with the gear teeth 161a of the gear portion 161. In this case, The head portion 100 can be maintained at a predetermined angle as it is separated and coupled to the plurality of gear teeth 161a.

The elastic member 165 is provided in the straight groove 316 and elastically supports the stopper 163 so that the stopper 163 moves toward the gear portion 161 side.

7A to 9, the main body 300 includes a housing 310, a laser pointer 331, a signal LED 335, a battery remaining amount LED 350, a lower housing 370, and a main PCB 390).

7A and 7B, the housing 310 is formed in a concave shape at an upper portion thereof and includes a receiving groove 311 to which the head unit 100 is rotatably coupled, and a supporting bracket 330 is coupled to the inside of the receiving groove 311 A predetermined space is formed. Such a housing 310 is made of a flame-retardant plastic (for example, a flame-retardant high-impact engineering plastic), so that it is possible to prevent the shape of the housing 310 from being deformed due to a high temperature generated during a fire.

The main body 300 has a wiring hole 301 through which the wiring penetrates at the inner upper end and a wiring lead out from the wiring hole 301 at the outer upper end (inside the accommodation groove 311) A guide groove 303 which can be guided is formed.

The protruding portion 308 of the waterproofing member 307 is coupled to the recessed portion 303 including the wiring hole 301 on the inner side of the main body portion 300. [ At this time, the sealing member 305 is inserted into the protrusion 308 for sealing between the wiring hole 301 and the waterproof member 307. 8, through holes 305a and 308a are formed in the protruding portions 308 of the sealing member 305 and the waterproof member 307, respectively.

A laser pointer 331 for generating a laser beam is disposed on one side of the support bracket 330. The laser beam emitted from the laser pointer 331 may be, for example, a red color laser beam having a visible distance of 5 mW and a viewing distance of 50 m. The support bracket 330 is provided with a plurality of signal LEDs 335 arranged in a lattice shape so as to surround the laser pointer 331 in the region where the laser pointer 331 is provided. In this case, the plurality of signal LEDs 335 are LEDs capable of color conversion into multiple colors (for example, three colors or five colors) so that a predefined signal between the users can be identified by the color of light. Preferably, the plurality of signal LEDs 335 have an identifiable distance of signal light of about 1000 m.

On the other hand, an ultraviolet lamp (not shown) having a wavelength of 215 to 400 nm may be mixed or alone in place of the signal LED in the region where the signal LED 335 is installed. Such an ultraviolet lamp can be used for counterfeit banknotes, document discrimination, chemical analysis, etc. In addition, a camera module (not shown) is provided in a region where the laser pointer 331 is installed, Of course it is possible. In this case, the image photographed by the camera module may be stored in a predetermined memory through the microprocessor. In this case, a micro-module (not shown) for recording a voice along with the image photographed by the camera module have.

The support bracket 330 is provided with a first operation button (not shown) for turning on and off a plurality of signal LEDs 335. In this case, the colors of the plurality of signal LEDs 335 may be changed according to the number of times the first operation button is pressed, and this may be controlled by a microprocessor (not shown) installed on the main PCB 390. In this case, the housing 310 is formed with a through hole 348a (see FIG. 8) to which the first button cover member C1 covering the first operation button is coupled. The first button cover member C1 is preferably made of a rubber member having sealing property so as to be waterproof.

When the support bracket 330 is coupled to the inner space, the laser beam and the LED light are emitted to the outside of the housing 310 at portions corresponding to the regions where the laser pointer 331 and the signal LED 335 are disposed A through hole 341 is formed so as to be diverged. The light guide plate 343 is coupled to the through hole 341 to protect the plurality of signal LEDs 335. The light guide plate 343 is fixed to the through hole 341 by a conventional ultrasonic welding technique so that the through hole 341 is sealed and watertight. (Not shown). In this case, a laser beam emitting hole 344 is formed in the light guide plate 343 so that the laser beam can pass through the position corresponding to the laser pointer 331.

The battery remaining amount indicating LEDs 350 are arranged in a line on one side of the support bracket 330 at intervals. In this case, a plurality of LED through holes 346 are formed in a portion of the housing 310 corresponding to a region where the battery remaining amount indicating LED 350 is disposed, and a light guide plate (not shown) 351 and the transparent or semi-transparent cover member 353 are formed. In this case, the cover member 353 is coupled to the housing 310 so as to be hermetically sealed through normal ultrasonic welding, like the light guide plate 343 described above.

The support bracket 330 is provided with a second operation button B2 (see FIG. 7B) for turning on / off the remaining battery level LED 350. In this case, the microprocessor (not shown) installed on the main PCB 390 can control the battery remaining amount LED 350 in response to the operation signal generated by the second operation button B2. In this case, any one of the battery remaining amount indicating LEDs 350 can be controlled by the microprocessor to flash for confirmation of the safe mode activation described later.

 The ON / OFF of the battery remaining amount indicating LED 350 can be controlled by a microprocessor (not shown) installed on the main PCB 390 in response to an operation signal generated by the second operation button B2 . In this case, the housing 310 is formed with a through hole 348b to which the second button cover member C2 covering the second operation button B2 is coupled. The second button cover member C2 is preferably made of a rubber member having sealing property so as to be waterproof like the first button cover member C1.

Referring to FIG. 7B, the lower housing 370 is coupled to the lower end of the housing 310 through a plurality of fastening screws 371. In this case, the waterproof pad 373 is coupled to the lower end of the lower housing 370 by the plurality of fastening screws 371. The waterproof pad 373 is disposed between the lower housing 370 and the upper end of the casing 510 of the battery loading part 500. In this case, the lower housing 370 is formed with a screw portion 379, which is screwed with the screw portion 513 formed at the upper end of the casing 510 of the battery loading portion 500,

The lower housing 370 is provided with a third operation button B3 for turning on / off the laser pointer 331 on one side. The third operation button B3 can be switched to the safe mode according to the number of times of pressing. In this case, a microprocessor (not shown) installed on the main PCB 390 controls the laser pointer 331 and a speaker (not shown) disposed inside the main body 310 in response to an operation signal generated by the third operation button B3 SP) can be controlled. In this case, it is of course possible that the speaker SP is provided inside the main body 310 so as to have a predetermined space on the undersurface, and the speaker SP can provide the effect of sounding by this space.

In the case of switching to the safe mode, if vibration is not detected by a vibration detection sensor (not shown) installed inside the main body 310 within a preset time, for example, 10 seconds, It is considered that an abnormality in safety has occurred and the speaker SP is operated to generate an audible alarm to notify the user of the surrounding state. Furthermore, it is of course possible that the signal LED 335 blinks when the speaker SP operates. This operation can be implemented by a program stored in advance in the microprocessor mounted on the main PCB 390. [

The lower housing 370 is formed with a through hole 375 to which a third button cover member C3 covering the third operation button B3 is coupled. The third button cover member C3 is preferably made of a rubber member having sealability so as to be waterproof like the first and second button cover members C1 and C2. Meanwhile, the first to third button cover members C1 to C3 are formed as a double injection structure in which rubber and plastic are integrally formed, thereby maximizing the waterproof effect (see FIGS. 7A and 7B).

The lower housing 370 may be provided with a charging port 372 for charging the rechargeable battery 530. When power is applied to the charging port 372, Charging can be accomplished by a module (not shown) with a conventional charging circuit included. In this case, the lower housing 370 is formed with a through hole 378 to which the waterproof cap 380 for waterproofing the charging port 372 is coupled. The waterproof cap 380 has a connecting portion 381 inserted into a coupling hole 377 formed in the lower housing 370 at one side and the waterproof cap 380 is connected to the lower housing 370, The engaging protrusion 383 is formed.

A pair of power terminals 372a and 372b for receiving power from the battery 530 are provided at the lower end of the lower housing 370. In addition, the lower end portion 550 is preferably made of aviation aluminum having a strength and a light weight enough to break glass, like the filter hammer 143.

The main PCB 390 is mounted inside the lower housing 370 and has a control circuit electrically connected to the above-described various devices and capable of controlling the respective devices.

The battery mounting portion 500 includes a casing 510, a battery 530, and a lower end portion 550. The casing 510 is detachably screwed to the lower end of the lower housing 370 and a space portion 511 for receiving the battery 530 is formed inside. In this case, the casing 510 becomes a grip portion for the user to grasp. An upper battery housing 531 having an electrode 532 is installed on the upper side of the casing 510. The casing 510 is preferably made of flame retardant plastic (for example, flame retardant high-impact engineering plastic) as the housing 310 of the body 300 described above.

The lower end portion 550 of the battery mounting portion 500 is formed with a threaded portion 551 screwed to the threaded portion 515 formed at the lower end of the casing 510 along the inner peripheral surface of the lower end portion 550. In this case, the battery lower housing 533 may be fixedly installed at the lower end portion 550.

The battery 530 may use a rechargeable battery, but it is also possible to use a disposable battery without limitation.

Referring to FIG. 3, a ring 610 and a fixing clip 630 are provided at the rear of the housing 310. The hook 610 allows the portable LED lighting device to be connected to the user's clothes or various devices, and the fixing clip 630 can be fixed to the portable LED lighting device itself so that the user can freely use both hands .

As described above, in the present invention, it is possible to freely set the rotation angle within the range of the angle of the head portion for illumination to 75 to 180 degrees. In addition, the present invention can detect the movement of the user by the vibration detection sensor in the safety mode and generate the alarm sound through the speaker SP.

In addition, the present invention can improve the reliability of the product by providing a member for waterproofing in the penetrating portion of the head portion 100 and the main body portion 300 through which the wiring penetrates. In this case, it is preferable to provide a structure for waterproof treatment such as a double injection structure at a portion where the components of the main body 300 and the lower housing 370 are coupled.

The present invention is not limited to the field of use and can be used by the police or the military as well as the fire station.

As described above, the present invention has been described by the embodiments and drawings, but it should be understood that the technical idea of the present invention and the practical examples It is needless to say that various modifications and variations can be made within the scope of the claims of the present invention.

100: head part 110: heat sink case
111: LED for illumination 113: Metal PCB
115: heat sink 120: conical reflector
133: head cap 135: first retaining ring
137: Dust ring 140: Filter section
141: smoke filtering filter 143: filter hammer
145: second fixing ring 150: filter protection cap
160: Angle adjusting section 161:
163: Stopper 165: Coil spring
300: main body 310: housing
331: Laser pointer 335: Signal LED
350: LED for displaying remaining battery power 370: Lower housing
390: main PCB 500:

Claims (11)

A head portion including an LED for illumination inside;
A plurality of signal LEDs, a plurality of LEDs for displaying remaining battery power, and a control circuit for controlling each of the devices, wherein the housing includes a housing in which the head portion is rotatably coupled, A main PCB including a main PCB mounted thereon;
A connection part detachably coupled to a lower end of the housing of the body part and having a charging port; And
And a battery mounting part detachably coupled to a lower end of the connection part and having a battery mounted therein. The method according to claim 1,
An angle adjusting portion for adjusting the angle of the head portion is disposed between the left and right sides of the head portion and the left and right sides of the housing,
Wherein the angle-
A gear portion formed integrally with the head portion and having a plurality of gear teeth formed along a periphery thereof;
A stopper slidably inserted into a straight groove formed in a receiving groove of the head portion, the stopper being selectively engaged with the gear teeth of the gear portion according to the rotation of the head portion; And
And a coil spring disposed in the straight groove and elastically supporting the stopper so as to press the stopper toward the gear portion side. 3. The method of claim 2,
Wherein the head portion has an angle from the position (P1) arranged coaxially with the main body portion to the maximum rotation position (P2) is 105 °. The method according to claim 1,
In the main body portion,
A first operation button for turning on / off the plurality of signal LEDs;
A second operation button for turning on / off the plurality of remaining battery level LEDs; And
And a third operation button for turning on / off the laser pointer,
Controls the color change of the plurality of signal LEDs according to the number of times the first operation button is pressed,
Wherein the second operation button controls the flashing of any one of the plurality of remaining battery level LEDs according to the number of times of pressing. 5. The method of claim 4,
The body part further includes a vibration detection sensor and a speaker,
And the third operation button is switched to the safe mode according to the number of times of pressing. In the safety mode, if the microprocessor does not detect vibration by the vibration sensor within a predetermined time, Features a portable LED lighting device. 5. The method of claim 4,
Wherein the first to third operation buttons are respectively covered by first to third button cover members detachably coupled to the main body,
Wherein the first to third button cover members have a double injection structure in which rubber and plastic are integrally formed. The method according to claim 1,
A filter hammer selectively removably fastened to the head portion and the lower end of the battery mounting portion;
A retaining ring screwed into the filter hammer; And
And a smoke inserting filter fixed to the filter hammer by the fixing ring,
Characterized in that the filter is made of the smoke-curing filter yellow-amber color and has a transmittance of 620 nm and is coated with UV-cured impact resistant glass. The method according to claim 1,
Wherein the main body is provided with an ultraviolet lamp having a wavelength of 215 to 400 nm for fake discrimination. The method according to claim 1,
Wherein the main body further comprises a camera module for recording an image and a micro microphone for recording voice. The method according to claim 1,
A seal member that is coupled to an insertion hole of the head portion that is drawn out from the main body portion and penetrates a wiring leading into the head portion; And
And a fixing screw threadably engaged with the head portion to prevent the seal member from separating from the insertion hole,
When the fastening screw is fastened to the head part, the seaming part presses the seal member while rotating the fastening screw, so that the part protruded by the inclined surface of the seam part is pressed, and the seam part is pressed and stretched in the circumferential direction And the hole is sealed in the insertion hole. The method according to claim 1,
Wherein the signal LED and the remaining battery amount LED are covered by a light guide plate and a cover member detachably coupled to the main body,
Wherein the light guide plate and the cover member are coupled to the main body through an ultrasonic welding so as to be sealed and waterproof.

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