JP5627066B2 - Retractable air filter mechanism and projector device - Google Patents

Description

  The present invention relates to a take-up air filter mechanism mounted on an electronic device or the like and a projector apparatus using the same.

  As a conventional take-up type air filter mechanism of this type, a take-up reel, a take-up reel arranged between the send-out reel, one end locked and wound on the send-out reel, and the other end is wound A roll-shaped air filter locked to the take-up reel, a driving means for rotationally driving the take-up reel, and a tensioner for bringing the air filter into close contact with the fan and making the tension of the air filter constant, The part of the air filter located between the delivery reel and the take-up reel is placed in front of the air cooling inlet provided in the equipment, and the drive means is energized at predetermined time intervals during the operation of the equipment. Then, there is one in which dirty air filters are sequentially wound on a take-up reel (see, for example, Patent Document 1).

Although not using a take-up type air filter, the pre-filter disposed so as to be movable along or rotatable on the outside air inlet provided in the device, and the pre-filter is moved or rotated. A drive mechanism unit for causing the pre-filter to slide, and a brush for removing adhering dust; and a second nozzle that is provided downstream of the pre-filter and collects dust having a smaller particle diameter than the pre-filter. When the clogging sensor detects that a certain amount of dust has accumulated in the prefilter, or when a predetermined time has passed, the drive mechanism unit moves or rotates the prefilter. In the meantime, there is a brush that removes dust and dust adhering to the pre-filter with a brush ( In example, see Patent Document 2).
JP-A-8-128400 JP 2008-065021 A

  However, in the configuration of the conventional take-up air filter mechanism as described in Patent Document 1, there is no mechanism for removing dust adhering to the air filter, and an air filter clogged with dust is simply taken up by a take-up reel. Since the entire length of the air filter is clogged because it is only wound up, it is necessary to remove the air filter together with the take-up reel, widen the air filter for cleaning, and the cleaning work is very troublesome. Further, since the air filter can be moved only to the take-up reel side, that is, it can only be used in one direction, it is difficult to use for a long period of time, and there is a problem that it is troublesome because of frequent cleaning and replacement.

  Further, since the tensioner is provided, it is necessary to increase the driving torque of the driving means, which causes the problem that the driving means is enlarged and the equipment is enlarged.

  Further, in the configuration of the conventional filter unit described as the first embodiment in the second cited document, since the brush is provided, dust can be reliably removed from the prefilter. When the pre-filter is moved to remove dust from the filter, the outside air intake is opened, so that outside air directly enters the second air filter, and dust enters directly into the device. However, there was a problem that the second air filter was clogged early.

  Further, in the configuration of the conventional filter unit described in the same patent document as Embodiment 2, the prefilter is rotated when cleaning the prefilter, so that the outside air intake port is always covered with the prefilter. However, the second air filter is not clogged early, but since the brush is disposed on the outside air passage surface of the pre-filter, the effective filtration area of the pre-filter is reduced, and the pre-filter is clogged. There was a problem that the timing was earlier, and as a result, the number of dust removals was increased and the life of the drive mechanism unit was shortened.

  The present invention solves the above-described conventional problems, and effectively removes dust from the filter while effectively utilizing the area of the filter, and is a rewind-type air filter that is less likely to exhaust dust and is easy to maintain. It is an object of the present invention to provide a mechanism and a projector device.

In order to solve the above problems, the winding type air filter mechanism of the present invention, the take-up air filter mechanism mounted to the device having an air passage communicating the inlet and exhaust ports Fresh air delivery a reel delivery installed in the reel accommodating body of the reel, the feed to face provided et al is on the reel, and the take-up reel installed in a reel housing body of the take-up reel, near a and the air passage of the intake port A ventilation passage section disposed in the middle of the filter, one end locked to the delivery reel, the other end locked to the take-up reel, and a filter body traversing the ventilation passage section, and the take-up reel being driven to rotate to dust removal in contact with the upstream side face of the flow of air through the drive member to move the filter body, the filter of the filter body and A dust having the dust removal brush arranged outward from the vent passage portion includes a該除dust body and thereby the dust container having a dust chamber for accommodating dust is dust, the dust container, the It is detachably installed on the reel housing of the take-up reel, and further, after the filter body of a predetermined length is wound around the take-up reel, the delivery reel is driven to rewind the filter body. The filter body is provided with a rewinding drive body that removes the filter body with the dust removing body and then rewinds the filter body. The dust collected by the filter body is reliably removed with the dust removing body. Since it is removed, the user does not have to clean while dust scattered by the filter body is scattered around with a brush or the like, which is very hygienic. Further, by rewinding the filter body once dust-removed to the delivery reel side by a predetermined length, the filter body can be used back and forth, and the filter body can be effectively used for a long time. Further, since the dust removed from the filter body can be stored in the dust container, it is not necessary to discard the dust every time the dust remover operates, and maintenance is easy. In addition, if the dust container is detachable, it is sufficient to remove only the dust container at an appropriate time and discard the dust in a trash can or bag. I can do it.

In the projector device of the present invention, the main body having the intake port and the exhaust port has an image display element body having a light source lamp, and a projection body having a lens provided so that an image from the image display element body can be enlarged and projected. A control body having electronic parts for controlling the projection body and the image display element body, and a blower for sucking outside air from the intake port into the main body, cooling the inside, and then exhausting from the exhaust port The take-up air filter mechanism according to claim 1 or 2 , wherein the take-up air filter mechanism is detachable from the main body, and the take-up air filter mechanism is attached to the main body. Sometimes, the ventilation passage portion of the wind-up air filter mechanism is in airtight communication with the intake port, and dust removal of the air filter body is bothersome for the user. It is reliably performed in the no dust removal body. In addition, since the air filter body is always maintained in a clean state, there is little air pressure loss in the air filter body, and the inside of the projector apparatus can be cooled efficiently, so that it is possible to provide a highly reliable projector apparatus. .

  The wind-up type air filter mechanism and the projector apparatus of the present invention efficiently remove the dust of the filter while effectively utilizing the area of the filter, and the frequency of exhausting the dust is low, so that maintenance is very easy.

A first aspect of the present invention is a take-up air filter mechanism mounted on a device having an air passage that communicates an intake port and an exhaust port for taking in outside air, a delivery reel installed in a reel housing body of the delivery reel, and the delivery provided we are facing the reel, and the take-up reel installed in a reel housing body of the take-up reel, and the vent passage portion that is disposed in the middle near the and the air passage of the intake port, feeding said one end A filter body whose other end is locked to the take-up reel and traversing the ventilation passage, a drive body for rotating the take-up reel to move the filter body, and the filter body a dust having a dust removal brush arranged outward from the vent passage portion which contacts the upstream face of the air flow dust remover passing filter, Comprising a dust removal body and thereby the dust container having a dust chamber for accommodating dust is dust, the dust container is removably installed detachably to the reel housing body of said take-up reel, and further, the A rewinding drive for rotating the delivery reel to rewind the filter body after the filter body of a predetermined length is wound on the take-up reel, the filter body being dedusted After the dust is removed by the body, the filter body is rewound, and the dust collected by the filter body is surely removed by the dust remover, so that the user brushes the dust collected by the filter body. It is very hygienic because there is no need to clean it while being scattered around. Further, by rewinding the filter body once dust-removed to the delivery reel side by a predetermined length, the filter body can be used back and forth, and the filter body can be effectively used for a long time. Further, since the dust removed from the filter body can be stored in the dust container, it is not necessary to discard the dust every time the dust remover operates, and maintenance is easy. In addition, if the dust container is detachable, it is sufficient to remove only the dust container at an appropriate time and discard the dust in a trash can or bag. I can do it.

In the second invention, in particular, a pair of filter supports are arranged between the delivery reel and the take-up reel of the first invention and outside the ventilation passage portion, and the pair of filter supports is used. The filter body is configured so that the position crossing the ventilation passage portion of the filter body is constant from the start to the end of winding, and when the filter body is wound around the take-up reel, Even if the overall outer diameter of each of the take-up reels changes, by providing a pair of filter supports, the filter body is always arranged in parallel without being inclined with respect to the air inlet, and the air inlet and the filter There is no gap between the body and the sealing performance is improved. Further, the tension of the filter body can be kept constant.

According to a third aspect of the present invention, a main body having an air inlet and an air outlet has an image display element body having a light source lamp, a projection body having a lens provided so as to be able to enlarge and project an image from the image display element body, and the projection A control body having an electronic part for controlling a body and the image display element body, a blower for sucking outside air from the intake port into the main body, cooling the inside, and exhausting from the exhaust port, The take-up air filter mechanism according to 1 or 2 , wherein the take-up air filter mechanism is detachable from the main body, and when the take-up air filter mechanism is attached to the main body, The take-up air filter mechanism has a ventilation passage that communicates with the air inlet in an airtight manner, and the dust removal of the air filter body is ensured by the dust removal body without bothering the user. It takes place. In addition, since the air filter body is always maintained in a clean state, there is little air pressure loss in the air filter body, and the inside of the projector apparatus can be cooled efficiently, so that it is possible to provide a highly reliable projector apparatus. .

In particular, the fourth invention includes a sensor for detecting the temperature or pressure of the air passing between the intake port and the exhaust port of the third invention, or a timer for integrating the operation time, and the detection result by the sensor or the timer The filter body is moved by a predetermined distance by rotating the take-up reel with the drive body in accordance with the integration result of, and if the filter body is clogged with dust, the flow of outside air will be weakened, and the cooling effect inside the projector device body However, by providing a sensor that detects the temperature and pressure in the main unit, when the internal temperature of the device is high, or when the pressure in the device is low and the flow of outside air is abnormal, By driving the drive body and moving the unclean part of the filter body to the ventilation passage part, the user does not move the filter body himself, It is possible to respond, which is very convenient. In addition, since the filter body can be clogged to some extent based on the accumulated operation time by the timer, the drive body is driven according to the accumulated operation time by the timer, and the filter body is contaminated. The same effect can be obtained by moving the non-existing portion to the intake port.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited by this Example.

  Example 1

  FIG. 1 is an external perspective view of a projector apparatus equipped with a wind-up air filter mechanism according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of a mounting portion of the wind-up air filter mechanism of the projector apparatus. FIG. 3 is an enlarged cross-sectional view of the take-up air filter, and FIG. 4 is a perspective view of the take-up air filter mechanism.

  1-4, the projection which has the projection lens which projects an image in the front part of the main body 2a of the projector apparatus 2 which mounts the winding type air filter mechanism 1 (henceforth "filter mechanism 1") in a present Example. The body 3 is formed with an intake port 4 on one side and an exhaust port 5 on the other side.

  Inside the main body 2a, an image display element body 6 composed of a large number of electronic components and the like for optically processing an image projected by the projection body 3, a power supply substrate body 7, and the temperature and pressure in the main body 2a are detected. Sensor 8 and air passage 9 communicating with intake port 4 and exhaust port 5, sucking outside air from intake port 4, cooling heat-generating components such as image display element body 6 and power supply substrate body 7, A blower 10 for exhausting air from the exhaust port 5, a control body 11 for controlling the image display element body 6, the blower 10, and the like are provided.

  A notification unit 12 is provided in front of or above the main body 2a. The notification section 12 includes an LED or the like, and displays the operation status of the main body 2a to notify the user.

  In this embodiment, the filter mechanism 1 can be detachably mounted on the side surface of the main body 2a where the air inlet 4 is formed.

  Next, the configuration of the filter mechanism 1 in the present embodiment will be described in detail.

  The filter mechanism 1 includes a reel storage body 14 that is provided to face each other and has a substantially rectangular parallelepiped shape, and a ventilation passage portion 15 that is formed between the pair of reel storage bodies 14. When the filter mechanism 1 is mounted on the main body 2a, the ventilation passage portion 15 is located in the vicinity of the intake port 4 and in the middle of the ventilation passage portion 15, that is, between the intake port 4 and the blower 10. The air inlet communicates with the air inlet 4 in an airtight manner, and serves as a passage through which outside air flowing in from the air inlet 4 passes during operation.

  A delivery reel 16 is rotatably supported on one (right side in FIGS. 3 and 4) of the reel housing 14 and a take-up reel 17 is rotatably supported on the other (left side in FIGS. 3 and 4).

  Reference numeral 18 denotes a filter body having a large number of fine ventilation holes (not shown) for collecting dust contained in the outside air, one end of which is on the delivery reel 16 and the other end on the take-up reel 17. It is fixed. In this embodiment, the total length of the filter body 18 is set to at least 10 times the length of the width of the ventilation passage portion 15, most of which is wound around the delivery reel 16 in advance, A portion of the filter body 18 located between the feed reel 16 and the take-up reel 17 is arranged airtight so as to cross the ventilation passage portion 15.

  19 is disposed below the take-up reel 17 and rotates the take-up reel 17 by a predetermined number of rotations, so that the fresh filter body 18 that is wound around the feed reel 16 and has no dust attached thereto is passed through the ventilation passage portion. This is a driving body for pulling out 15 while traversing 15 and winding it on the take-up reel 17.

  Reference numeral 20 denotes a rewinding drive body that is provided below the delivery reel 16 and rotates the delivery reel 16 to rewind the filter body 18 wound around the take-up reel 17 by a predetermined length.

  Reference numeral 21 denotes a pair of auxiliary rollers that are rotatably housed inside the delivery reel 16 and the take-up reel 17 and outside the ventilation passage portion 15, and function as a filter support that supports the filter body 18. To fulfill. Above and below each auxiliary roller 21, a flange-like vertical movement restriction guide 21 a for preventing the filter body 18 from moving up and down when moving is formed, and the filter body 18 is wound around the take-up reel 17. In this case, each of the pair of auxiliary rollers 21 prevents the gap between the inlet 4 and the filter body 18 from being changed even if the outer diameter gradually changes to a larger diameter. A line L connecting the rotation centers is arranged to be parallel to the intake port 4.

  23 is a detection switch provided in the vicinity of the take-up reel 17, and when the filter body 18 taken up by the take-up reel 17 has a predetermined outer diameter, it detects that and sends a signal to the control body 11. A rewinding drive 20 that rotates the feed and feed reel 16 is operated.

  A cover 24 detachably covers the upper opening 14a of the reel housing 14 and is formed so that the filter mechanism 1 can be easily taken out when the filter mechanism 1 is replaced.

  26 is an air blower mounting body having an outdoor air passage opening 26a formed on the rear side, to which the blower 10 is fixed, and having a guide wall 26b on a side surface. It is in contact.

  Reference numeral 29 a denotes a handle provided on the dust remover lid 29. Reference numeral 28 denotes a dust container, and in the dust container 28, a dust container chamber 28b for storing the dust removed from the filter body 18 is formed.

  In the vicinity of the dust storage chamber 28b, a dust removing body 30 for removing dust adhering to the filter body 18 is rotatably formed. The dust removing body 30 is made of a shaft body 30a and a soft material, and is freely bent. The brush 30b is formed of a large number of brushes 30b formed radially on the body 30a, and the vertical width of the brush 30b is fixed so as to contact the entire vertical width of the filter body 18 with a predetermined pressure.

  31 is a dust removal comb for removing dust adhering to the dust removal body 30 when dust collected by the filter body 18 is removed by the dust removal body 30, and its tip end bites into the brush 30 b of the dust removal body 30. Is arranged. Reference numeral 32 denotes a driving body that rotationally drives the dust removing body 30.

  The dust storage body 28 is made of a transparent or translucent material. When a predetermined amount of dust is stored in the dust storage chamber 28b, the lid 24 is opened to remove the filter mechanism 1 from the main body 2a, and the dust storage body 28 is removed. It is only necessary to remove the dust from the filter mechanism 1 and discard the dust in a trash can or a bag, so that the dust treatment can be performed reliably and cleanly.

  The operation and action of the take-up air filter mechanism configured as described above and the projector device equipped with the air filter mechanism are as follows.

  During the operation of the projector device, the outside air flows from the intake port 4 of the main body 2a → the ventilation passage portion 15 → the filter body 18 → the ventilation passage portion 15 → the outlet 15b of the ventilation passage portion → the air passage 9 → the blower mounting body. After passing through the outside air passage opening 26a of 26, it enters the main body 2a and cools the heat generating components such as the image display element body 6, the power supply board body 7, and the control body 11, and then is exhausted to the outside through the exhaust opening 5. The

  When the outside air passes through the filter body 18, dust contained in the outside air is collected by the filter body 18, so that the dust does not enter the main body 2a.

  In this way, when the main body 2a is used for a long time, the filter body 18 is clogged with dust, and it becomes difficult for outside air to enter from the intake port 4, and the cooling performance of the heat generating components in the main body 2a is reduced. However, in this embodiment, the sensor 8 for detecting the temperature and pressure in the main body 2a is provided, the air flow becomes worse, the temperature in the main body 2a exceeds a predetermined temperature, or the air enters the main body 2a. When it becomes difficult to enter and the air pressure in the main body 2a is detected to be equal to or lower than a predetermined value, the control body 11 automatically operates the drive body 19 for a predetermined time or a predetermined rotation, and the filter body 18 Is wound around the take-up reel 17 and moved by the width of the ventilation passage portion 15. As a result, a clean portion of the filter body 18, that is, a portion to which dust is not attached, newly crosses the ventilation passage portion 15, and outside air is sucked into the main body 2 a without any resistance.

  Further, while the portion clogged with dust of the filter body 18 moves toward the take-up reel 17 by the width of the ventilation passage portion 15, the drive body 32 is energized to rotate the dust removal body 30, Dust adhering to the upstream side surface of the filter body 18 is removed by the brush 30b of the dust removing body 30 and falls into the dust storage chamber 28b and stored.

  In the present embodiment, the speed difference between the moving speed of the filter body 18 and the rotational peripheral speed of the dust removing body 30 when dust is removed from the filter body 18 (for example, the moving speed of the filter body 18> the rotation of the dust removing body 30). The dust removal body 30 can reliably remove the filter body 18 by providing a circumferential speed or vice versa.

  In this embodiment, since the dust removing body 30 is arranged in front of the take-up reel 17, the filter body 18 is wound on the take-up reel 17 after being cleaned. Is.

  Even if the dust removed from the filter body 18 does not fall on the dust removing body 30, the dust is wiped by the dust removing comb 31, so that the dust does not continue to accumulate on the dust removing body 30. .

  In the present embodiment, the entire length of the filter body 18 is set to such a length that the ventilation passage portion 15 can be moved 10 times. Therefore, the above cleaning operation can be repeated 10 times. When the cleaning operation is performed 10 times and the outer diameter of the take-up reel 17 reaches a predetermined size, this is detected by the detection switch 23, and the filter body 18 is completely taken up on the take-up reel 17 side. Is displayed on the notification unit 12 by a sound such as a buzzer or a chime, or is notified to the user.

  When the user recognizes that the filter body 18 has been completely wound on the take-up reel 17 side by a sound such as a buzzer or a chime or the notification unit 12, the user removes the filter mechanism 1 from the main body 2a, and handles 29a. The dust removing lid 29 is removed by pinching and the dust in the dust storage chamber 28b is discarded. In the present embodiment, since the dust container 28 is formed of a transparent or translucent material, the amount of dust accumulated in the dust container chamber 28b can be confirmed from the outside. If the amount of dust is small, the dust container 28 is left as it is. You may reattach to the main body 2a in a state (with dust remaining).

  When the dust disposal is finished and the filter mechanism 1 is remounted on the main body 2a, a clutch mechanism (not shown) provided on the take-up reel 17 side automatically operates, and the machine between the drive body 19 and the take-up reel 17 is automatically operated. When the mechanical connection is released, the take-up driving body 20 on the delivery reel 16 side is driven, and the filter body 18 taken up on the take-up reel 17 is rewound to the delivery reel 16 side. It will be prepared for use.

  As described above, according to the present embodiment, the dust collected by the filter body 18 is surely removed by the dust removing body 30, so that the user can remove the dust collected by the filter body 18 with a brush or the like. It is very hygienic because there is no need to clean it around. Further, since the dust removing body 30 is provided outside the ventilation passage portion 15 of the filter body 18, that is, outside the ventilation area through which the outside air of the filter body 18 passes, the dust removal body 30 inhibits the passage of outside air. In addition, the filter body 18 can be used effectively, which helps to make the main body 2a compact.

  Further, when a predetermined amount of dust is collected by the filter body 18, the take-up reel 17 is rotated by the drive body 30, and the filter body 18 is moved to the take-up reel 17 by the width of the ventilation passage portion 15. As a result, the fresh filter body 18 without dirt is disposed in the ventilation passage portion 15, so that the clogging is surely eliminated and the outside air easily passes.

  Further, the dust removal of the filter body 18 by the dust removal body 30 is performed outside the ventilation passage portion 15 through which the outside air passes, so that the dust collected by the dust removal body 30 is prevented from passing through the eyes of the filter body 18. The

  Further, by rewinding the filter body 18 once dust-removed to the delivery reel side by a predetermined length, the filter body 18 can be used reciprocally and the filter body 18 can be effectively used for a long time.

  Further, since the dust removed from the filter body 18 can be stored in the dust storage chamber 28b of the dust storage body 28, it is not necessary to discard the dust every time the dust removal body 30 operates, and maintenance is easy. is there. If the dust container 28 is detachably provided, only the dust container 28 can be removed at an appropriate time, and the dust inside can be discarded in a trash can or bag. Can be disposed of.

  Further, the filter body 18 crosses the ventilation passage portion 15 of the filter body 18 between the delivery reel 16 and the take-up reel 17 and outside the ventilation passage portion 15 from the start of winding to the end of winding. Since the pair of auxiliary rollers 21 are arranged so that the positions are constant, when the filter body 18 is wound around the take-up reel 17, the overall outer diameter of each of the feed reel 16 and the take-up reel 17 changes. The filter body 18 does not incline with respect to the air inlet 4 and is always arranged in parallel, so that no gap is formed between the air inlet 4 and the filter body 18, and the sealing performance is improved. Further, the tension of the filter body 18 can be kept constant.

  In addition, by mounting the filter mechanism 1 on the projector device 2, the filter body 18 is always maintained in a clean state, so that the air pressure loss at the filter body 18 is small and the inside of the projector device 2 can be efficiently cooled. The projector device 2 having excellent reliability can be provided.

  Further, when the filter body 18 is clogged with dust, the flow of outside air becomes weak and the cooling effect in the projector apparatus main body is reduced. However, a sensor 8 for detecting the temperature and pressure in the main body 2a is provided, and the inside of the main body 2a is provided. When it is detected that the temperature is high or the pressure in the main body 2a is low and the flow of outside air is abnormal, the drive body 19 is driven and the unclean part of the filter body 18 is moved to the ventilation passage section 15. By moving it, the user can automatically cope with the abnormality without moving the filter body 18 himself, which is very convenient.

  In the above-described embodiment, the total length of the filter body 18 is set such that the ventilation passage portion 15 can be moved 10 times. However, if the main body 2a is allowed to be slightly enlarged, the filter body 18 is allowed. The length of the filter body 18 may be further increased so that the cleaning can be performed more times. On the contrary, the total length of the filter body 18 is shortened, and the number of times of cleaning of the filter body 18 in one outgoing path is reduced. You may make it aim at size reduction of 2a.

  In the above embodiment, the driving bodies 19 and 32 are operated when the sensor 8 detects a predetermined temperature and pressure. However, a manual switch (not shown) is provided separately from the drive bodies 19 and 32. However, when it is visually determined that the filter body 18 is dirty, the drive bodies 19 and 32 may be operated by operating the manual switch.

  Further, since the degree of contamination of the filter body 18 (the degree of dust accumulation) can be estimated to some extent based on the accumulated operation time of the main body 2a, a timer (not shown) for integrating the operation time of the main body 2a is used instead of the sensor 8. In addition, the driving bodies 19 and 32 may be operated according to the integration result.

  Alternatively, the degree of contamination (dust accumulation) of the filter body 18 is detected by optical means, and the driving bodies 19 and 32 are operated when the optical means detects a predetermined degree of contamination. May be.

  When fine dust that cannot be removed by the dust removing body 30 gradually accumulates on the filter body 18, the lid 24 may be opened, the removable filter body 18 may be taken out and washed, or replaced. Furthermore, when there is a certain margin in the size of the main body 2a, if a dust container having a dust removing body is provided in the vicinity of the delivery reel 16, it can be used repeatedly for a long time.

  When the filter mechanism 1 is not attached to the main body 2a, or when the filter body 18 is not attached to the filter mechanism 1, the notification unit 12 notifies the user of the fact and the main body 2a. If it is made impossible to operate, safety can be secured.

  In the above-described embodiment, the rotatable auxiliary roller 21 is used so that the portion between the feed reel 16 and the take-up reel 17 of the filter body 18 is always parallel to the air inlet 4. Further, a fixing member such as a non-rotating wall, positioning body, or boss may be used.

  Further, in the above embodiment, the rewind drive body 20 and the drive bodies 19 and 32 are provided individually for rotationally driving the delivery reel 16, the take-up reel 17, and the dust removing body 30, but the delivery reel 16 and the take-up reel are provided. Only one of the reel 17 and the dust removing body 30 or only two may be provided with a driving body, and the other may be connected to a belt or a gear. Alternatively, a driving body is provided on one of the delivery reel 16 and the take-up reel 17 and a coil spring is built in the other, and one is rotated by the driving body to wind up the filter body 18 while simultaneously winding up the other coil spring. In this case, the filter body 18 can be rewound to the other by the urging force of the coil spring only by separating the drive body with a clutch or the like.

  In the above-described embodiment, when the dust in the dust storage chamber 28b of the dust storage body 28 is discarded, the filter mechanism 1 is once extracted from the main body 2a of the projector device 2, and the dust storage body 28 is removed from the filter mechanism 1. However, if the dust container 28 can be removed with the filter mechanism 1 attached to the main body 2a, it is not necessary to remove the filter mechanism 1 from the main body 2a every time the dust is discarded. It will be.

  As described above, the wind-up type air filter mechanism and the projector device of the present invention efficiently remove the dust of the filter while effectively utilizing the area of the filter, and the frequency of exhausting the dust is low, so that the maintenance is very easy. It is easy, and can be applied to various electronic and electrical devices that take in outside air and cool the internal heat generating components.

1 is an external perspective view of a projector apparatus equipped with a wind-up type air filter mechanism according to a first embodiment of the present invention. Sectional view of the installation part of the retractable air filter mechanism of the projector device Enlarged cross-sectional view of the retractable air filter mechanism Perspective view of the retractable air filter mechanism

Explanation of symbols

1 Rewind-type air filter mechanism (filter mechanism)
2 Projector device 4 Intake port 5 Exhaust port 10 Blower 14 Reel storage part 15 Ventilation passage part 16 Delivery reel 17 Take-up reel 18 Filter body 19, 32 Driver 21 Auxiliary roller (filter support)
30 Dust remover

Claims (4)

In a take-up type air filter mechanism mounted on a device having an air passage that communicates an intake port and an exhaust port for taking in outside air, a feed reel installed in a reel housing of the feed reel, and provided facing the feed reel al is a take-up reel installed in a reel housing body of the take-up reel, and the vent passage portion that is disposed in the middle near the and the air passage of the intake port, the reel feed the one end and the other end A filter body that is respectively engaged with the take-up reel and traverses the ventilation passage, a drive body that rotates the take-up reel to move the filter body, and air that passes through the filter of the filter body a dust having a dust removal brush arranged outward from the vent passage portion for dust removal into contact with the upstream side face of the flow, 該除dust body and which With more dust removal by the dust dust container having a dust chamber for accommodating a dust container is removably installed detachably to the reel housing body of said take-up reel, and further, the take-up reel After the filter body of a predetermined length is wound up, the filter body is provided with a rewinding drive body that rotationally drives the delivery reel to rewind the filter body, and the filter body is dedusted by the dust removing body. A wind-up type air filter mechanism characterized in that the filter body is then rewound.   A pair of filter supports are arranged between the delivery reel and the take-up reel and outside the ventilation passage, and the pair of filter supports allows the filter body to start from the start to the end of winding. 2. The wind-up type air filter mechanism according to claim 1, wherein a position of the filter body that crosses the ventilation passage is constant.   The main body having the air inlet and the air outlet has an image display element body having a light source lamp, a projection body having a lens provided so as to be able to enlarge and project an image from the image display element body, and the projection body and the image display. The control body which has the electronic component which controls an element body, the air blower for suck | inhaling outside air from the said inlet port in the said main body, cooling the inside, and exhausting from the said exhaust port, The claim 1 or 2 The take-up air filter mechanism is detachable from the main body, and the take-up air filter mechanism is attached to the main body when the take-up air filter mechanism is attached to the main body. A projector device in which a ventilation passage portion of a filter mechanism is in airtight communication with the intake port.   A sensor that detects the temperature or pressure of the air passing between the intake port and the exhaust port, or a timer that integrates the operation time, and a take-up reel that is driven by the driving body according to the detection result by the sensor or the integration result by the timer The projector device according to claim 3, wherein the filter body is moved by a predetermined distance by rotating the filter body.

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