JP2014123678A - Electric apparatus - Google Patents

Abstract

To provide an electrical device having a vent opening / closing mechanism with a simple configuration that appropriately opens and closes a vent of an exterior housing of an electricity usage section.
An electric device according to the present invention includes: an open position for opening a gas inlet SO along an outer wall 12b of an exterior housing 12 of an electricity use section storing a heat generating element; and a closed position for closing a gas inlet. An opening / closing member 20 movably provided between the conductive wire 16 and the conductive wire attaching / detaching element 18 on the outer wall of the exterior housing. Opening and closing member drive structures 20c and 22 are provided to move the opening and closing member to the closed position by separating the ends of the lines.
[Selection] Figure 3

Description

  The present invention relates to an electrical device having a vent opening / closing mechanism for opening / closing a vent.

  A heat generating element and an external housing that contains an electric device including a cooling element that blows a cooling gas to the heat generating element are housed. An electric wire end (AC plug) is detachably connected to the outer wall of the external housing. Electricity provided with a conductive wire attachment / detachment element for supplying electricity from the conductive wire to the use part, a gas introduction port for introducing gas from the outside of the exterior housing, and a gas exhaust port for exhausting the gas inside the exterior housing to the outside Various devices are known.

  For example, a projector is a type of such an electric device. In a projector, for example, various electric and / or electronic components used in an electric circuit, a light emitting unit such as a laser light emitting element, an LED, or a light bulb (lamp) (including a heat sink that cools the light source) is used as a heating element. Correspondingly, the cooling fan corresponds to the cooling element, the end of the conductive wire corresponds to the power plug, and the power socket corresponds to the conductive wire detachable element (AC inlet portion).

  In such an electrical apparatus, when the cooling element is operated during use, gas, in this case, air, is introduced from the outside of the outer housing into the outer housing through the gas inlet, and the cooling element is introduced. The gas is blown onto the heat generating element to remove heat from the heat generating element, and the heated gas is discharged to the outside of the exterior housing through the gas discharge port.

  Since the foreign gas such as dust is mixed in the gas outside the exterior housing, in this case, air, for example, the foreign matter passes through the gas introduction port together with the external gas when the above-described electricity use part is used. Become. Such foreign matters are likely to adhere to the periphery of the gas inlet due to the influence of static electricity, for example. If such foreign matter enters and accumulates inside the exterior housing of the electric device, the flow of the cooling gas inside the exterior housing deteriorates, the temperature inside the exterior housing rises, or moisture inside the exterior housing rises. It becomes easy to accumulate. An increase in temperature and an increase in humidity inside the outer housing cause a failure of the electricity use section.

  Moreover, it is preferable that the gas inlet and the gas outlet are closed so that foreign matter does not enter the inside.

  Japanese Unexamined Patent Application Publication No. 2007-59593 (Patent Document 1) discloses a structure for preventing clogging of a filter of a ventilation mechanism in a POS terminal device having a ventilation mechanism provided with a filter. Here, the ventilation mechanism is stored in the exterior housing of the POS terminal device, the filter for the ventilation device is disposed on the outer wall of the exterior housing, and the power switch of the POS terminal device is disposed behind the filter. Yes. The filter is attached to the outer wall of the exterior housing so as to be slidable between a closed position where the filter covers the power switch and an open position where the power switch is exposed. A wiper is arranged along the sliding path of the filter in the exterior housing, and the filter must be slid from the closed position to the open position to turn the power switch on and off. Foreign matter such as dust adhering to the filter is scraped off to the outside of the outer housing by the wiper.

JP 2007-59593 A

  There is a wide demand for a simple structure for reliably cleaning the ventilation mechanism, such as the structure described in Japanese Patent Application Laid-Open No. 2007-59593 (Patent Document 1).

  An object of the present invention is to provide an electric device having a vent opening / closing mechanism with a simple structure for appropriately opening / closing the vent in an electric device provided with a vent such as a gas inlet and a gas outlet. It is.

  In order to achieve the above-described object of the present invention, an electrical device according to the present invention is an electrical device having an exterior housing that stores an electricity use portion, and an end portion of a conductive wire is attached to and detached from an outer wall of the exterior housing. A conductive wire attaching / detaching element that is connected so as to supply electricity from the conductive wire to the electricity use portion, and a vent hole that communicates the inside and the outside of the exterior housing; provided along the outer wall; An opening / closing member provided so as to be movable between an open position for opening the vent and a closed position for closing the vent; and attaching the end of the conductive wire to the conductive wire attaching / detaching element. And an opening / closing member drive structure for moving the opening / closing member to the closed position by separating the end of the conductive wire from the conductive wire attaching / detaching element.

  According to the present invention, it is possible to appropriately open and close the vent hole with a simple structure.

FIG. 1A is a schematic perspective view showing an external appearance of a projector which is a kind of an electric apparatus provided with a vent opening / closing mechanism according to the first embodiment of the present invention; FIG. 2B is a perspective view schematically showing an arrangement of various structures stored in the exterior housing by removing the upper cover of the exterior housing of the projector shown in FIG. 2A is a schematic enlarged view of the vent opening / closing mechanism arranged along the gas inlet on the outer wall of the exterior housing of the projector shown in FIGS. 1A and 1B. In this case, a power plug that is an end of a power cord that is a type of conductive wire is not inserted into a power socket that is a type of a conductive wire attachment / detachment element on the outer wall of the exterior housing. The vent opening / closing mechanism closes the gas inlet; and FIG. 2B is a schematic longitudinal sectional view taken along the line BB of FIG. 3 is an enlarged horizontal sectional view schematically showing the vent opening / closing mechanism arranged along the gas inlet on the outer wall of the exterior housing of the projector shown in FIGS. 1 (A) and 1 (B). In this case, a power plug which is an end of a power cord which is a kind of conductive wire is inserted into a power socket which is a kind of conductive wire attaching / detaching element on the outer wall of the exterior housing, and the vent opening / closing mechanism is The gas inlet is open. FIG. 4 is an enlarged view of the vent opening / closing mechanism arranged along the gas introduction port on the outer wall of the exterior housing of the projector, which is a kind of electric equipment having the vent opening / closing mechanism according to the second embodiment of the present invention. Is a horizontal cross-sectional view schematically showing, in which a power plug that is an end of a power cord that is a type of conductive wire is inserted into a power socket that is a type of a conductive wire detachable element on the outer wall of the exterior housing. The vent opening / closing mechanism is not closed and the gas inlet is closed. FIG. 5 is an enlarged view of the vent opening / closing mechanism arranged along the gas introduction port on the outer wall of the exterior housing of the projector, which is a kind of electric equipment having the vent opening / closing mechanism according to the second embodiment of the present invention. Is a horizontal cross-sectional view schematically showing, in which a power plug that is an end of a power cord that is a type of conductive wire is inserted into a power socket that is a type of a conductive wire detachable element on the outer wall of the exterior housing. The vent opening / closing mechanism opens the gas inlet.

[First Embodiment]
FIG. 1A schematically shows the external appearance of a projector 10 that is a type of electrical equipment provided with a vent opening / closing mechanism according to the first embodiment of the present invention. The projector 10 includes a flat, substantially rectangular parallelepiped outer housing 12. The exterior housing 12 is a housing body having a substantially rectangular bottom wall 12a and a substantially rectangular cylindrical outer peripheral wall 12b which is formed integrally with the bottom wall 12a and rises from the outer periphery of the bottom wall 12a and surrounds the bottom wall 12a. including. The housing body further includes an upper lid 12c that covers the opening of the outer peripheral wall 12b opposite to the bottom wall 12a with respect to the outer peripheral wall 12b. The upper lid 12c is detachably attached to the upper end of the outer peripheral wall 12b. The bottom wall 12 a and the outer peripheral wall 12 b of the housing body and the upper lid 12 c constitute the outer wall of the exterior housing 12.

  FIG. 1B schematically shows the arrangement of various structures stored in the housing body by removing the upper cover 12a of the exterior housing 12 of the projector 10 shown in FIG. Has been. Various structures include an electrical and electronic circuit board 14a disposed on the right side of the internal space of the housing body, an optical system 14b disposed on the left side of the internal space, and a projection image forming / positioning disposed in the center of the internal space. A cooling block 14c is included.

  The front wall portion of the projection opening PO and the projection image forming / cooling block 14c in which the outer end portion OE including the projection lens (not shown) of the optical system 14b is arranged on the front wall portion of the outer peripheral wall 12b of the exterior housing 12 A gas discharge port DO facing the electric exhaust fan DF disposed adjacent to is formed. In this embodiment, the gas outlet DO is composed of a plurality of slits.

  As shown in FIGS. 1A and 1B, a gas inlet SO is formed in the right side wall portion of the outer peripheral wall 12 b of the exterior housing 12. In this embodiment, the gas inlet SO is composed of a plurality of slits SL1 each extending from the vicinity of the bottom wall 12a of the exterior housing 12 to the upper end of the outer peripheral wall 12b. The plurality of slits SL1 are arranged in parallel to each other from the vicinity of the front wall portion of the outer peripheral wall 12b of the outer housing 12 to the vicinity of the rear wall portion on the right side wall portion.

  A socket (AC plug inlet) to which the plug 16a at the end of the power cord 16 for supplying current to the electrical and electronic circuit board 14a is detachably connected to the rear wall portion of the outer peripheral wall 12b of the exterior housing 12 18 is arranged in the vicinity of the right side wall. The back wall is further illustrated for supplying electric signals for controlling electric and electronic circuits including input signals for inputting to various electric and electronic circuits provided on the electric and electronic circuit board 14a. An electric signal line connecting terminal portion 19 to which a plurality of signal lines (cables) that are not connected is detachably connected is disposed.

  As shown in FIG. 1B, the optical system 14b has a front stage adjacent to the projection image forming / cooling block 14c on the side opposite to the outer end. The projection image forming / cooling block 14c includes a projection image forming unit PI for forming an optical image to be projected by the optical system 14b at the front stage of the optical system 14b. The projection image forming unit PI can form a color optical image using a light source composed of a light emitting element such as a laser diode or an LED (not shown) as a light source. The projection image forming unit PI further includes a heat sink HS for cooling the light source. The projected image forming / cooling block 14c further includes an electric air supply fan SF between the heat sink HS and the electric and electronic circuit board 14a.

  In the projector 10 of this embodiment, the bottom wall 12a of the projector 10 is placed on a support (not shown), for example, a table, and a plurality of electric signal lines not shown in the electric signal line connection terminal portion 19 are provided. After the terminal is detachably connected and the plug 16a at the end of the power cord 16 shown in FIG. 1A is connected to the socket 18, the plurality of signal lines (not shown) are used. When an electric signal is input, the electric and electronic circuit of the electric and electronic circuit board 14a emit light from the light source of the projection image forming unit PI according to the input electric signal, and optical images corresponding to various electric signals are output to the optical system 14b. The optical image is projected from a projection lens (not shown) via the optical system 14b.

  During this time, the electricity and electronic circuit of the electricity and electronic circuit board 14a generate heat, the light source of the projection image forming unit PI generates heat, and the electricity and electronic circuit of the electricity and electronic circuit board 14a become electrically driven by the electric exhaust fan DF and electric supply. The air fan SF is operated. The actuated electric intake fan SF moves the air (outside air) in the outer space of the outer housing 12 to the right side of the outer peripheral wall 12b of the outer housing 12 as indicated by a two-dot chain arrow in FIG. The air is sucked into the internal space of the exterior housing 12 from the gas inlet SO of the wall, and is blown to the heat and the electric circuit generating heat from the electric and electronic circuit board 14a to take heat away from the generated electric and electronic circuit. The sucked air is cooled and then sprayed onto the light source generating heat of the projection image forming unit PI and its heat sink HS, as indicated by a two-dot chain arrow in FIG. Then, heat is taken away from the heat sink HS and eventually from the light source to be cooled. In this way, the air heated after taking heat from the electric and electronic circuits and the heat sink HS and thus the light source is further converted into the electric exhaust fan DF as shown by the two-dot chain arrow in FIG. Thus, the gas is discharged from the interior space of the exterior housing 12 into the external space of the exterior housing 12 through the gas discharge port DO in the front wall portion of the outer peripheral wall 12 b of the exterior housing 12.

  In the projector 10 that is a kind of an electric device provided with an opening / closing mechanism for a ventilation port such as a gas inlet according to the first embodiment of the present invention and is configured and operated as described above, the projector 10 generates heat when the projector 10 is operated. The electric and electronic circuits of the electric and electronic circuit board 14a, the light source of the projection image forming unit PI, and the heat sink HS for cooling the light source correspond to the heat generating elements, and the electric intake fan SF includes the cooling gas for the heat generating elements. The embodiment corresponds to a cooling element that blows air (outside air).

  In the projector 10, the electric and electronic circuit board 14 a including the heat generating element and the projection image forming / cooling block 14 c correspond to the electricity use unit.

  Further, in the projector 10, the power cord 16 corresponds to the conductive wire, and the socket 18 to which the plug 16 a at the end of the power cord 16 is detachably connected corresponds to the conductive wire detachable element.

  The projector 10, which is a kind of electric equipment having a vent opening / closing mechanism according to the first embodiment of the present invention and is configured and operated as described above, further includes a foreign matter discharge structure for cleaning the gas inlet SO. I have.

  Next, a first embodiment of the vent opening / closing mechanism will be described with reference to FIGS. 2 and 3.

  The vent opening / closing mechanism of the first embodiment opens a plurality of slits SL1 of the gas inlet SO on the right side wall along the inner surface of the right side wall of the outer peripheral wall 12b that is a part of the outer wall of the exterior housing 12. An opening / closing member 20 is provided that is movable between an open position (see FIG. 3) and a closed position (see FIG. 2A) that closes the plurality of slits SL1 of the gas inlet SO.

  Specifically, the opening / closing member 20 is formed along the inner surface of the right side wall portion of the outer peripheral wall 12b that is a part of the outer wall of the exterior housing 12, and in the vicinity of the front wall portion and the rear wall portion of the outer peripheral wall 12b that is a part of the outer wall. The opening / closing member 20 has a plurality of slits in the gas inlet SO on the right side wall portion of the outer peripheral wall 12b which is a part of the outer wall of the exterior housing 12. A plurality of slits SL2 having the same shape as SL1 are formed.

  In the closed position shown in FIG. 2A, the lattice portion 20a between the plurality of slits SL2 of the opening / closing member 20 and the front wall portion side adjacent portion (the exterior housing 12 in the plurality of slits SL2 of the opening / closing member 20). The opening / closing member 20 adjacent to the front wall portion in the slit SL2 closest to the front wall portion of the outer peripheral wall 12b) has a plurality of gas introduction ports SO of the right side wall portion of the outer peripheral wall 12b of the exterior housing 12. A plurality of slits SL1 are closed overlapping with the slits SL1.

  In the open position shown in FIG. 3, the lattice portion 20 a between the plurality of slits SL <b> 2 of the opening / closing member 20 is between the plurality of slits SL <b> 1 of the gas inlet SO on the right side wall portion of the outer peripheral wall 12 b of the exterior housing 12. The front wall portion side adjacent portion of the opening / closing member 20 (the slit SL2 closest to the front wall portion of the outer peripheral wall 12b of the exterior housing 12 in the plurality of slits SL2 of the opening / closing member 20 overlaps with the lattice portion LP. 20f is a front wall portion side adjacent portion of the right wall portion of the outer peripheral wall 12b of the outer housing 12 (the front wall of the outer peripheral wall 12b of the outer housing 12 in the plurality of slits SL1 of the right wall portion). A plurality of slits SL1 are opened overlapping 12d on the right wall portion adjacent to the front wall portion in the slit SL1 closest to the portion.

  As shown in FIG. 2, the inner surface of the right side wall portion of the outer peripheral wall 12b of the outer housing 12 is formed on the inner surface of the outer housing 12 from the edge of the rear wall portion side of the outer peripheral wall 12b in each of the plurality of slits SL1. A stop projection ST projects into the internal space. A side surface of the rear wall portion side of each of the plurality of lattice portions 20a of the opening / closing member 20 disposed at the closed position is a front surface of the plurality of stop protrusions ST on the inner surface of the right wall portion of the outer peripheral wall 12b of the exterior housing 12. It is positioned at the closed position by contacting the side surface on the wall side.

  In the opening / closing member 20, the opening / closing member 20 is in a closed position between the front end surface of the outer wall 12 b of the outer housing 12 on the front wall side and the inner surface of the front wall of the outer wall 12 b of the outer housing 12. An urging means 22 that urges in the opposite direction is interposed. The biasing means 22 is an elastic material molded body that is molded so as to obtain a large elastic stroke by an elastic material such as a compression coil spring, a leaf spring, or rubber.

  As shown in FIG. 2, the plug 16a at the end of the power cord 16 shown in FIG. 1A is connected to the socket 18 on the rear wall of the outer peripheral wall 12b of the exterior housing 12. In the state where it is not, the urging means 22 urges the opening / closing member 20 toward the closed position by the urging force, and can be positioned at the closed position as described above.

  As shown in FIG. 2A, each of the plurality of lattice portions 20 a and the front wall side adjacent portion 20 f of the opening / closing member 20 is a side surface on the rear wall portion side of the outer peripheral wall 12 b of the exterior housing 12. The closed position ((A) of FIG. 2) and the open position (FIG. 3) of the opening / closing member 20 from the (rear side) into the corresponding slit SL1 of the gas inlet SO of the right side wall portion of the outer peripheral wall 12b of the outer housing 12 A foreign matter discharge protrusion 20b extending in a direction substantially perpendicular to the moving direction between the two. Each foreign matter discharge protrusion 20b of the opening / closing member 20 has the same height as the height from the lower end on the bottom wall 12a side of the exterior housing 12 to the upper end of the outer peripheral wall 12b in the corresponding slit SL1.

  As shown in FIG. 2A, when the opening / closing member 20 is disposed at the closed position, the rear side surface of the corresponding slit SL1 of the gas introduction port SO to which each of the plurality of foreign matter discharge protrusions 20b opposes. The side surface on the front wall side of the outer peripheral wall 12b of the lattice portion LP is inclined to move away from the side surface on the front wall side of the outer peripheral wall 12b as it goes from the inner end to the outer end of each slit SL1. It includes a moving direction inclined surface SS that is curved in form.

  As shown in FIG. 2B, the lower end surface (end surface on the side of the bottom wall 12a) of each of the plurality of slits SL1 of the gas introduction port SO has an outer end from an inner end of each slit SL1. The lower inclined surface DS that is inclined from the inner end of each slit toward the bottom wall 12a is included. In FIG. 2B, a state in which each lattice portion 20b of the opening / closing member 20 protrudes into the corresponding slit SL1 is indicated by a virtual line (two-dot chain line).

  As shown in FIG. 2A, a pressing drive protrusion 20 c that protrudes into the internal space of the socket 18 is formed at the rear end of the opening / closing member 20 on the rear wall side of the outer peripheral wall 12 b of the outer housing 12. Is provided.

  As shown in FIG. 3, when the plug 16 a of the power cord 16 is inserted into the socket 18 on the rear wall of the outer peripheral wall 12 b of the outer housing 12, the opening / closing member 20 that protrudes into the internal space of the socket 18. The pressing drive protrusion 20 c is pressed to the front wall side of the outer peripheral wall 12 b of the exterior housing 12 by the plug 16 a of the power cord 16. When the pressing drive projection 20c is pushed in this way by the plug 16a of the power cord 16, the front end face of the opening / closing member 20 pushes and shrinks the urging means 22 against the urging force, and the opening / closing member 20 is shown in FIG. A) It moves along the inner surface of the right side wall of the outer peripheral wall 12b of the exterior housing 12 from the closed position in FIG. 3 to the open position shown in FIG.

  This movement is caused by the outer periphery of the lattice portion LP corresponding to the front side surface of the slit SL1 corresponding to the gas inlet SO, as shown in FIG. It stops by coming into contact with the side surface of the rear wall side of the wall 12b.

  At this time, the lattice portion 20a between the plurality of slits SL2 of the opening / closing member 20 overlaps the lattice portion LP between the plurality of slits SL1 of the gas introduction port SO, and the front wall portion side adjacent portion of the opening / closing member 20 (opening / closing member) 20 f is the right side of the outer peripheral wall 12 b of the outer housing 12. The opening / closing member 20 adjacent to the front wall portion in the slit SL 2 closest to the front wall portion of the outer peripheral wall 12 b of the outer housing 12 Front wall portion side adjacent portion of the wall portion (the portion of the right wall portion of the outer peripheral wall 12b adjacent to the front wall portion in the slit SL1 closest to the front wall portion of the outer peripheral wall 12b of the exterior housing 12 in the plurality of slits SL1) It overlaps with 12d.

  At this time, since the plurality of slits SL2 of the opening / closing member 20 overlap with the plurality of slits SL1 of the gas inlet SO on the right side wall portion of the outer peripheral wall 12b of the exterior housing 12, the plurality of slits SL1 are opened. The position of the opening / closing member 20 at this time is the open position described above.

  Thereafter, the projector 10 is operated as described above, and the electric intake fan SF (see FIG. 1B) and the electric exhaust fan DF (see FIG. 1B) in the outer housing 12 are operated. As shown by the two-dot chain line arrow in FIG. 1B, the air outside the exterior housing 12 (outside air) is a plurality of gas inlets SO on the right side wall portion of the outer peripheral wall 12 b of the exterior housing 12. Is sucked into the internal space of the exterior housing 12 through the slit SL1 and the plurality of slits SL2 of the opening / closing member 20. Inhaled air is a heat generating element in the internal space. In this embodiment, as described above, the heat generating light source of the electric and electronic circuit board 14a and the projection image forming unit PI are generating heat. Then, the heat sink HS is deprived of heat and cooled, and is discharged from the interior space of the exterior housing 12 into the external space of the exterior housing 12 through the gas outlet DO on the front wall portion of the outer peripheral wall 12b of the exterior housing 12.

  In this ventilation process, the peripheral surfaces (lower end surface, rear side surface, front side surface (in this embodiment, individual foreign matter discharge protrusions of the opening / closing member 20 covering the front side surface) of the plurality of slits SL1 of the gas introduction port SO. 20a) and a portion of the upper cover 12c of the outer housing 12 covering the upper end openings of the individual slits SL1, foreign matter contained in the outside air (outside air), for example, dust easily adheres.

  Thereafter, the above-described operation of the projector 10 was stopped, and when the plug 16a of the power cord 16 was separated from the socket 18 on the rear wall of the outer peripheral wall 12b of the exterior housing 12, it was projected into the internal space of the socket 18. The pressing toward the front wall side of the outer peripheral wall 12b of the exterior housing 12 against the pressing drive protrusion 20c of the opening / closing member 20 is eliminated.

  As a result, the front end surface of the opening / closing member 20 is urged by the urging force of the urging means 22, and the opening / closing member 20 is shown in FIG. 2A from the open position shown in FIG. Return to the closed position.

  In the first embodiment, this means that the combination of the pressing drive projection 20c at the rear end of the opening / closing member 20 and the biasing means 22 at the front end of the opening / closing member 20 corresponds to the conductive wire detaching element. By attaching the plug 16a of the power cord 16 corresponding to the end of the conductive wire to the socket 18 on the rear wall 12b of the outer peripheral wall 12b of the housing 12, the opening / closing member 20 is moved to the open position (FIG. 3) to correspond to the conductive wire detaching element. The plug member 16a of the power cord 16 corresponding to the end of the conductive wire from the socket 18 on the rear wall of the outer peripheral wall 12b of the outer housing 12 is closed to the closed position ((A) in FIG. 2). It means that an open / close member moving structure (open / close mechanism) to be moved is provided.

  Further, the pressing drive protrusion 20c at the rear end of the opening / closing member 20 in the first embodiment is interposed between the opening / closing member 20 and the plug 16a of the power cord 16 in the opening / closing member driving structure, and is installed in the socket 18. A pressing drive element that moves the opening / closing member 20 toward the open position against the biasing force of the biasing element 22 that is pressed by the plug 16a of the cord 16 to generate a biasing force that biases the opening / closing member 2 toward the closed position. providing.

  While the opening / closing member 20 is moved from the open position (FIG. 3) to the closed position (FIG. 2 (A)) as described above, the plurality of foreign matter discharge protrusions 20a of the opening / closing member 20 are connected to the gas inlet SO. Foreign matter, for example, dust adhered to the peripheral surfaces of the plurality of slits SL1 is rubbed out from the peripheral surfaces of the plurality of slits SL1 to the outside of the right side wall of the outer peripheral wall 12b of the exterior housing 12.

  This means that the plurality of foreign matter discharge protrusions 20a of the opening / closing member 20 function as a foreign matter discharge structure.

  In this embodiment, the moving direction inclined surfaces SS and the lower inclined surfaces DS of the plurality of slits SL1 of the gas inlet SO also have foreign matters such as dust attached to the plurality of slits SL1 as the outer peripheral wall 12b of the outer housing 12. It is easy to be discharged outside the right side wall.

  This means that in this embodiment, the moving direction inclined surface SS and the lower inclined surface DS of each of the plurality of slits SL1 also function as a foreign matter discharging structure.

  As is apparent from the above description, the vent opening / closing mechanism according to the first embodiment of the present invention configured as described above has a simple structure, but the gas in the outer housing 12 of the electrical apparatus such as the projector 10 is not limited. The vents such as the inlet SO can be properly opened and closed and can be reliably cleaned.

[Second Embodiment]
Next, a second embodiment of the vent opening / closing mechanism will be described with reference to FIGS. 4 and 5.

  The vent opening / closing mechanism of the second embodiment uses the same components as those of the vent opening / closing mechanism of the first embodiment described above with reference to FIG. 2 and FIG. In the vent opening / closing mechanism of the embodiment, the same constituent members as those of the vent opening / closing mechanism of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 4, the opening / closing member 20 is disposed at the same closed position as shown in FIG. 2A, and in FIG. 5, the opening / closing member 20 is shown in FIG. Arranged in the same open position.

  The vent opening / closing mechanism of the second embodiment differs from the vent opening / closing mechanism of the first embodiment described above with reference to FIGS. 2 and 3 in that the rear wall of the outer peripheral wall 12b of the outer housing 12 That is, the distance from the right side wall portion of the outer peripheral wall 12b to the socket 18 is increased in the portion.

  Further, the vent opening / closing mechanism of the second embodiment is along the inner surface of the rear wall portion of the outer peripheral wall 12b of the exterior housing 12 in the direction intersecting the moving direction between the open position and the closed position of the open / close member 20. A pressing drive member 30 is provided so as to be movable between the right side wall portion of the outer peripheral wall 12 b and the socket 18.

  The pressing drive member 30 has an opening / closing member contact end 30a in contact with the pressing drive projection 20c at the rear end of the rear wall, which is the tip when the opening / closing member 20 is urged by the urging element 22, and the inner space of the socket 18. And a plug pressing end 30b projecting from the top. A biasing means 32 is interposed between the opening / closing member contact end 30 a of the pressing drive member 30 and the inner surface of the right side wall portion of the outer peripheral wall 12 b of the outer housing 12. The urging means 32 is an elastic material molded body that is shaped so as to obtain a large elastic stroke by an elastic material such as a compression coil spring, a leaf spring, or rubber, like the urging means 22 for the opening / closing member 20. .

  In this embodiment, the urging means 32 also functions as an initial position / positioning means for positioning the pressing drive member 30 at the initial position shown in FIG. The opening / closing member contact end 30a of the pressing drive member 30 at the initial position is urged by the urging element 22 and is in contact with the pressing drive protrusion 20c of the opening / closing member 20 disposed at the closed position, and at the same time, the plug pressing end 30b is Projecting into the internal space of the socket 18.

  As shown in FIG. 4, when the plug 16a of the power cord 16 is not inserted into the socket 18 on the rear wall of the outer peripheral wall 12b of the outer housing 12, the pressing drive member 30 is in the initial position (closed position) as described above. The opening / closing member 20 is disposed at the closed position as described above.

  As shown in FIG. 5, when the plug 16 a of the power cord 16 is inserted into the socket 18 on the rear wall of the outer peripheral wall 12 b of the outer housing 12, the pressing drive member 30 protruding into the internal space of the socket 18. 4 is pushed from the initial position shown in FIG. 4 by the plug 16a of the power cord 16 toward the right side wall of the outer peripheral wall 12b of the outer housing 12, and the contact member 30a of the opening / closing member is urged 32. Is shrunk against the biasing force.

  During this time, the opening / closing member contact end 30a of the pressing drive member 30 also pushes the pressing drive projection 20c of the opening / closing member 20 toward the front wall side of the outer peripheral wall 12b of the exterior housing 12, and the opening / closing member 20 is connected to the front wall side of the outer peripheral wall 12b. The outer peripheral wall of the outer housing 12 is moved from the closed position in FIG. 4 to the same open position as shown in FIG. 3 while the biasing means 22 is compressed against the biasing force on the front end surface of the opening / closing member 20. Move along the inner surface of the right side wall of 12b. The position of the pressing drive member 30 at this time is an opening / closing member drive position (open position).

  This movement of the opening / closing member 20 is such that the foreign matter discharge protrusion 20b of the plurality of lattice portions 20a of the opening / closing member 20 corresponds to the front side surface of the corresponding slit SL1 of the gas inlet SO as shown in FIG. The opening / closing member 20 is disposed at the above-described open position by being brought into contact with the side surface on the rear wall side of the outer peripheral wall 12b of the portion LP.

  At this time, the lattice portion 20a between the plurality of slits SL2 of the opening / closing member 20 overlaps the lattice portion LP between the plurality of slits SL1 of the gas inlet SO on the right side wall portion of the outer peripheral wall 12b of the exterior housing 12, and opens and closes. Front wall portion side adjacent portion of the member 20 (the portion of the opening / closing member 20 adjacent to the front wall portion side in the slit SL2 closest to the front wall portion of the outer peripheral wall 12b of the exterior housing 12 in the plurality of slits SL2 of the opening / closing member 20) 20f is the front wall portion side adjacent portion of the right side wall portion of the outer peripheral wall 12b (the side of the front wall portion in the slit SL1 closest to the front wall portion of the outer peripheral wall 12b of the outer housing 12 in the plurality of slits SL1 of the gas introduction port SO) To the right side wall portion 12d) of the outer peripheral wall 12b adjacent to 12d.

  At this time, since the plurality of slits SL2 of the opening / closing member 20 overlap with the plurality of slits SL1 of the gas inlet SO on the right side wall portion of the outer peripheral wall 12b of the exterior housing 12, the plurality of slits SL1 are opened.

  Thereafter, the projector 10 is operated as described above, and the electric intake fan SF (see FIG. 1B) and the electric exhaust fan DF (see FIG. 1B) in the outer housing 12 are operated. As shown by the two-dot chain line arrow in FIG. 1B, the air outside the exterior housing 12 (outside air) is a plurality of gas inlets SO on the right side wall portion of the outer peripheral wall 12 b of the exterior housing 12. Is sucked into the internal space of the exterior housing 12 through the slit SL1 and the plurality of slits SL2 of the opening / closing member 20. Inhaled air is a heat generating element in the internal space. In this embodiment, as described above, the heat generating light source of the electric and electronic circuit board 14a and the projection image forming unit PI are generating heat. Then, the heat sink HS is deprived of heat and cooled, and is discharged from the interior space of the exterior housing 12 into the external space of the exterior housing 12 through the gas outlet DO on the front wall portion of the outer peripheral wall 12b of the exterior housing 12.

  In this ventilation process, the peripheral surfaces (lower end surface, rear side surface, front side surface (in this embodiment, individual foreign matter discharge protrusions of the opening / closing member 20 covering the front side surface) of the plurality of slits SL1 of the gas introduction port SO. 20a), and the foreign matter contained in the external lid (outside air), for example, dust, easily adheres to the upper cover 12c of the outer housing 12 covering the upper end openings of the individual slits SL1.

  Thereafter, the above-described operation of the projector 10 was stopped, and when the plug 16a of the power cord 16 was separated from the socket 18 on the rear wall of the outer peripheral wall 12b of the exterior housing 12, it was projected into the internal space of the socket 18. The pressing toward the right side wall of the outer peripheral wall 12b of the exterior housing 12 against the plug pressing end 30b of the pressing drive member 30 is eliminated.

  As a result, the opening / closing member contact end 30a of the pressing drive member 30 is urged by the urging force of the urging means 32, and the pressing drive member 30 is moved from the opening / closing member driving position shown in FIG. Return to the indicated initial position.

  At the same time, the pressing drive member 30 eliminates the pressing toward the front wall side of the outer peripheral wall 12b of the outer housing 12 against the pressing drive protrusion 20c of the opening / closing member 20 by the opening / closing member contact end 30a.

  As a result, the front end surface of the opening / closing member 20 is urged by the urging force of the urging means 22, and the opening / closing member 20 is moved from the open position shown in FIG. 5 to the closed position shown in FIG. And allowed to return.

  This is because, in the second embodiment, the pressing drive member 30 having the plug pressing end 30b and the opening / closing member contact end 30a, the biasing means 32 of the opening / closing member contact end 30a of the pressing drive member 30, and the opening / closing member The combination of the pressing drive protrusion 20c at the rear end portion 20 and the urging means 22 at the front end portion of the opening / closing member 20 with respect to the socket 18 on the rear wall 12b of the outer housing 12 corresponding to the conductive wire detaching element. By attaching the plug 16a of the power cord 16 corresponding to the end of the conductive wire, the open / close member 20 is moved to the open position (FIG. 5), and the rear wall 12b of the outer housing 12 corresponding to the conductive wire detachable element Opening / closing member moving structure (opening / closing mechanism) for moving the opening / closing member 20 to the closed position (FIG. 4) by separating the plug 16a of the power cord 16 corresponding to the end of the conductive wire from the socket 18 Which means that you are providing.

  Then, the plug 16a of the power cord 16 corresponding to the end of the conductive wire is attached to the socket 18 on the rear wall of the outer peripheral wall 12b of the outer housing 12 corresponding to the conductive wire detachable element, whereby the power cord 16 The plug pressing end 30b of the pressing drive member 30 pressed by the plug 16a provides a conductive wire end pressing end.

  Furthermore, the combination of the pressing drive member 30 having the plug pressing end 30b and the opening / closing member contact end 30a and the pressing drive projection 20c at the rear end of the opening / closing member 20 in the second embodiment is as follows. It is interposed between the opening / closing member 20 and the plug 16a of the power cord 16 and is pressed by the plug 16a of the power cord 16 attached to the socket 18 to generate a biasing force that biases the opening / closing member 2 toward the closed position. A pressing drive element that moves the opening / closing member 20 toward the open position against the biasing force of the biasing element 22 is provided.

  As described above, while the opening / closing member 20 is moved from the open position (FIG. 5) to the closed position (FIG. 4), the plurality of foreign matter discharge protrusions 20a of the opening / closing member 20 are formed in the plurality of slits SL1 of the gas inlet SO. Foreign matter, for example, dust adhered to the peripheral surface is rubbed out from the peripheral surface of the plurality of slits SL1 to the outside of the right side wall of the outer peripheral wall 12b of the exterior housing 12 and discharged.

  This means that the plurality of foreign matter discharge protrusions 20a of the opening / closing member 20 function as a foreign matter discharge structure.

  In this embodiment, the moving direction inclined surfaces SS and the lower inclined surfaces DS of the plurality of slits SL1 of the gas inlet SO also have foreign matters such as dust attached to the plurality of slits SL1 as the outer peripheral wall 12b of the outer housing 12. It is easy to be discharged outside the right side wall.

  This means that in this embodiment, the moving direction inclined surface SS and the lower inclined surface DS of each of the plurality of slits SL1 also function as a foreign matter discharging structure.

  As is apparent from the above description, even in the vent opening / closing mechanism according to the second embodiment of the present invention configured as described above, the gas in the exterior housing 12 of the electrical apparatus such as the projector 10 is simple in structure. The inlet SO can be reliably cleaned.

  The vent opening / closing mechanism according to the second embodiment can operate in the same manner as when the urging means 32 is provided without the urging means 32 for the pressing drive member 30. This is because the opening / closing member 20 arranged at the closed position shown in FIG. 4 by the urging force of the urging means 22 has an opening / closing member contact end 30a of the pressing drive member 30 by the pressing drive projection 20c at the rear end. This is because the plug driving end 30 b is moved to the initial position where the plug pressing end 30 b protrudes into the socket 18.

  Further, the opening / closing member contact end 30a of the pressing drive member 30 is separated from the pressing drive protrusion 20c at the rear end portion of the opening / closing member 20 disposed at the closed position shown in FIG. The plug pressing end 30b is not protruded into the socket 18 beyond the initial position, and the pressing drive member 30 is held at the initial position so as to allow the pressing drive member 30 to move from the initial position to the opening / closing member driving position. It is preferable to provide a stop member (not shown) to be performed on at least one of the pressing drive member 30, the socket 18, and the exterior housing 12.

  In each embodiment, the example in which the vent opening / closing mechanism is applied to a gas introduction port for introducing gas has been described. However, the vent opening / closing mechanism may be applied to a gas discharge port for discharging gas to the outside.

  In each embodiment, the projector is described as an example of the electric device, but it goes without saying that the present invention can be similarly applied to an electronic device having an AC inlet portion and a vent.

  The invention described in the scope of the claims of the present invention is appended below.

[1]. An electrical device having an exterior housing that houses an electricity usage section:
A conductive wire attachment / detachment element for detachably connecting an end portion of the conductive wire to the outer wall of the exterior housing and supplying electricity from the conductive wire to the electricity use portion, and a vent opening communicating the inside and the outside of the exterior housing And are provided;
An opening and closing member provided along the outer wall so as to be movable between an open position for opening the vent and a closed position for closing the vent;
The opening / closing member is moved to the open position by mounting the end of the conductive wire to the conductive wire attaching / detaching element, and the opening / closing member is moved to the closed position by separating the end of the conductive wire from the conductive wire attaching / detaching element. An opening / closing member drive structure to be moved;
Electrical equipment characterized by comprising

  [2]. The apparatus further comprises a foreign matter discharge structure that is provided in at least one of the vent and the opening / closing member and discharges the foreign matter attached to the vent through the movement of the opening / closing member to the outside from the vent. [1] The electric device according to [1].

[3]. The opening / closing member is movable along the inner surface of the outer wall of the exterior housing;
The foreign matter discharge structure extends from the opening / closing member into the vent in a direction intersecting the direction of movement, and the ventilation in the direction of movement is caused by the movement of the opening / closing member between the open position and the closed position. Including a foreign matter discharge protrusion that moves between one side of the mouth and the other side facing the one side,
The electrical device according to [2] above, wherein

[4]. The foreign matter discharge structure is provided on the other side surface of the vent hole where the foreign matter discharge protrusion is arranged when the opening / closing member is arranged at the closed position, and from the inner edge of the vent hole to the outer edge of the vent hole. Including a moving direction inclined surface that is inclined so as to move away from the one side surface of the vent as it goes.
The electrical device according to [2] or [3] above, wherein

[5]. The foreign matter discharge structure is provided on a lower end surface of the vent hole that is disposed on a support surface side on which the exterior housing is placed when the electric device is used in a direction intersecting the moving direction of the opening / closing member. A downwardly inclined surface that is inclined to move away from the inner edge of the vent toward the support surface side from the inner edge of the vent toward the outer edge of the vent.
The electrical apparatus according to any one of [2] to [4], wherein

  [6]. The opening / closing member driving structure is interposed between a biasing element that generates a biasing force that biases the opening / closing member toward the closed position, and the opening / closing member and an end of the conductive wire, A pressing drive element that is pressed by an end portion of the conductive wire attached to the element and moves the opening / closing member toward the open position against the biasing force of the biasing element. The electric device according to any one of [1] to [5].

  [7]. The pressing drive element is pressed by contact with an end of the conductive wire attached to the conductive wire attaching / detaching element, and moves the opening / closing member toward the open position against the biasing force of the biasing element. The electric device according to [6], further including a pressing drive protrusion.

[8]. The pressing drive element includes a pressing drive member that is movable along the outer wall of the exterior housing in a direction that intersects the moving direction of the opening / closing member.
The electrical device according to [5] or [6] above, wherein

[9]. The pressing drive member is pressed by an opening / closing member contact end that comes into contact with a tip when the opening / closing member is biased by the biasing element, and an end portion of the conductive wire attached to the conductive wire attaching / detaching element. A conductive wire end pressing end,
When the conductive wire end pressing end is pressed by the end portion of the conductive wire attached to the conductive wire attaching / detaching element, it moves along the outer wall from the initial position, and the front end of the opening / closing member is moved by the opening / closing member contact end. The end of the conductive wire is separated by moving the open / close member to the open position against the biasing force of the biasing means by separating the end of the conductive wire from the conductive wire attaching / detaching element. When the pressing of the conductive wire end pressing end by is released, the pressing of the opening / closing member by the opening / closing member contact end is released, and the opening / closing member is moved from the open position by the biasing force of the biasing means. Allowing movement to the closed position, during which the tip of the opening / closing member presses the opening / closing member contact end of the pressing drive member to return the pressing drive member to the initial position,
The electrical device according to [8] above, wherein

  [10]. The electrical apparatus according to any one of [1] to [9], wherein the vent is a gas inlet.

  [11]. The electric device according to any one of [1] to [10], wherein the electric device is a projector including a light source.

DESCRIPTION OF SYMBOLS 10 ... Projector (electric equipment), 12 ... Exterior housing, 12a ... Bottom wall (outer wall), 12b ... Outer peripheral wall (outer wall), 12c ... Upper lid (outer wall), 12d ... Front wall side adjacent part, 14a ... Electricity and electronics Circuit board (electrical use part: heating element), 14b ... optical system, 14c ... projected image formation / cooling block (electrical use part), OE ... outer end, DF ... electric exhaust fan, DO ... gas exhaust port, SO ... Gas inlet, SL1 ... Slit (gas inlet), 16 ... Power cord (conductive wire), 16a ... Plug (end), 18 ... Socket (conductive wire detachable element), 19 ... Electric signal line connection terminal, PI ... projected image forming section, HS ... heat sink (heat generation element), SF ... electric intake fan (cooling element), 20 ... opening and closing member, 20a ... lattice part, 20b ... foreign matter discharge projection (foreign matter discharge mechanism), 20c ... press drive projection Opening / closing member driving mechanism: pressing drive element), 20f ... front wall side adjacent portion, SL2 ... slit, ST ... stop projection, 22 ... biasing means (opening / closing member driving mechanism), SS ... moving direction inclined surface (foreign matter discharging mechanism) ), SD: downward inclined surface (foreign matter discharging mechanism), LP: lattice portion,
DESCRIPTION OF SYMBOLS 30 ... Press drive member (Opening / closing member drive mechanism: Press drive element), 30a ... Opening / closing member contact end, 30b ... Plug press end, 32 ... Energizing means (opening / closing member drive mechanism)

Claims (11)

An electrical device having an exterior housing that houses an electricity usage section:
A conductive wire attachment / detachment element for detachably connecting an end portion of the conductive wire to the outer wall of the exterior housing and supplying electricity from the conductive wire to the electricity use portion, and a vent opening communicating the inside and the outside of the exterior housing And are provided;
An opening and closing member provided along the outer wall so as to be movable between an open position for opening the vent and a closed position for closing the vent;
The opening / closing member is moved to the open position by mounting the end of the conductive wire to the conductive wire attaching / detaching element, and the opening / closing member is moved to the closed position by separating the end of the conductive wire from the conductive wire attaching / detaching element. An opening / closing member drive structure to be moved;
Electrical equipment characterized by comprising   A foreign matter discharge structure provided on at least one of the vent and the opening / closing member and further discharging foreign matter attached to the vent by the movement of the opening / closing member to the outside from the vent. Item 2. The electric device according to Item 1. The opening / closing member is movable along the inner surface of the outer wall of the exterior housing;
The foreign matter discharge structure extends from the opening / closing member into the vent in a direction intersecting the direction of movement, and the ventilation in the direction of movement is caused by the movement of the opening / closing member between the open position and the closed position. Including a foreign matter discharge protrusion that moves between one side of the mouth and the other side facing the one side,
The electrical apparatus according to claim 2, wherein The foreign matter discharge structure is provided on the other side surface of the vent hole where the foreign matter discharge protrusion is arranged when the opening / closing member is arranged at the closed position, and from the inner edge of the vent hole to the outer edge of the vent hole. Including a moving direction inclined surface that is inclined so as to move away from the one side surface of the vent as it goes.
The electrical apparatus according to claim 2 or 3, wherein The foreign matter discharge structure is provided on a lower end surface of the vent hole that is disposed on a support surface side on which the exterior housing is placed when the electric device is used in a direction intersecting the moving direction of the opening / closing member. A downwardly inclined surface that is inclined to move away from the inner edge of the vent toward the support surface side from the inner edge of the vent toward the outer edge of the vent.
The electrical apparatus according to any one of claims 2 to 4, wherein   The opening / closing member driving structure is interposed between a biasing element that generates a biasing force that biases the opening / closing member toward the closed position, and the opening / closing member and an end of the conductive wire, A pressing drive element that is pressed by an end portion of the conductive wire attached to the element and moves the opening / closing member toward the open position against the biasing force of the biasing element. The electric device according to any one of claims 1 to 5.   The pressing drive element is pressed by contact with an end of the conductive wire attached to the conductive wire attaching / detaching element, and moves the opening / closing member toward the open position against the biasing force of the biasing element. The electric device according to claim 6, further comprising a pressing drive protrusion to be moved. The pressing drive element includes a pressing drive member that is movable along the outer wall of the exterior housing in a direction that intersects the moving direction of the opening / closing member.
The electrical apparatus according to claim 5 or 6, characterized by the above. The pressing drive member is pressed by an opening / closing member contact end that comes into contact with a tip when the opening / closing member is biased by the biasing element, and an end portion of the conductive wire attached to the conductive wire attaching / detaching element. A conductive wire end pressing end,
When the conductive wire end pressing end is pressed by the end portion of the conductive wire attached to the conductive wire attaching / detaching element, it moves along the outer wall from the initial position, and the front end of the opening / closing member is moved by the opening / closing member contact end. The end of the conductive wire is separated by moving the open / close member to the open position against the biasing force of the biasing means by separating the end of the conductive wire from the conductive wire attaching / detaching element. When the pressing of the conductive wire end pressing end by is released, the pressing of the opening / closing member by the opening / closing member contact end is released, and the opening / closing member is moved from the open position by the biasing force of the biasing means. Allowing movement to the closed position, during which the tip of the opening / closing member presses the opening / closing member contact end of the pressing drive member to return the pressing drive member to the initial position,
The electrical apparatus according to claim 8.   The electrical apparatus according to claim 1, wherein the vent is a gas introduction port.   The electrical apparatus according to claim 1, wherein the electrical apparatus is a projector including a light source.

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