Background technology
The modern often utilizes projector (Projector) to do bulletin, meeting and education and training, especially, as the user with projector with after computer connects, the user just can evolve to the multimedia computer bulletin by the plane projection of originally traditional dullness, be that the user can be projeced into the briefing material in the computer on the bigger plane or screen by projector, allow participant on the scene can be clear that briefing material, quite convenient.Wherein, projector must be by camera lens to be projected to the external world with briefing material, when if the camera lens surface is subjected to scratch or is stained with dust, projector will be smudgy by the image that camera lens throwed, so the user must keep the cleaning of camera lens and avoid extraneous dust to be stained with the surface that is distributed in camera lens.In addition, camera lens is can be designed to stretch a pattern inside and outside projector, and its structure is as follows with description of drawings.
Please refer to Figure 1A, it is depicted as camera lens and shrinks diagrammatic cross-section in projector.In Figure 1A, projector 102 comprises casing 104, camera lens 106 and lens cap 108 at least, the left end of projector 102 is to have housing side wall 104a and mirror plate 110, and mirror plate 110 is to be disposed among the housing side wall 104a, and camera lens 106 is to be disposed at casing 104 and to stretch out in outside the housing side wall 104a via mirror plate 110 in telescopic mode.In addition, the housing side wall 104a snapping that lens cap 108 is and mirror plate 110 is other makes lens cap 108 can cover mirror plate 110, avoids extraneous dust to enter in the casing 104 via mirror plate 110 and prevents that dust is stained with on the surface that is distributed in camera lens 106.
When user's desire is used projector 102, the user can pull away the direction of lens cap 108 along the arrow 150 of Figure 1A in housing side wall 104a earlier, then, the user can controls lens 106, makes camera lens 106 also along the direction elongation of the arrow 150 of Figure 1A and by mirror plate 110.Then, projector 102 can be projected to the external world by camera lens 106, and shown in Figure 1B, wherein, the camera lens that Figure 1B is depicted as Figure 1A extends the diagrammatic cross-section outside projector.Certainly, when if the user does not use projector 102, the user can shrink camera lens 106 in casing 104 along the direction of the arrow 160 of Figure 1B, then, the user is buckled in lens cap 108 the housing side wall 104a on mirror plate 110 sides again, make lens cap 108 cover mirror plate 110 again, and for example shown in Figure 1A.
It should be noted that when the user operates projector 102 and lens cap 108 is placed in one side of projector 102,, so, be easy to generate the phenomenon of losing lens cap 108, quite inconvenience because lens cap 108 is not to link together with casing 104.In addition, when user's desire plug lens cap 108, the user must help casing 104 earlier on the other hand, and then, another hand of user side can plug lens cap 108 smoothly on housing side wall 104a, quite trouble.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of lens cap assembly, allows the user open or during the powered-down switch, can order about lens cap closure or openness mirror plate, break away from the user with the design of the traditional lens cap of manual plug yoke, simple to operate and meet modern's demand.
According to purpose of the present invention, a kind of lens cap assembly is proposed, be configurable in projector and use mirror plate for user's folding projector, projector comprises casing and camera lens at least, and camera lens is to be disposed in the casing, in order to the projection image, and mirror plate is to be disposed in the casing and corresponding to camera lens, and lens cap assembly is to comprise power switch, lens cap, gear unit, detection closed cell, detect and open unit and control module.Wherein, power switch is to be disposed in the casing, uses for the user and opens or close and distinguish to produce according to this and open signal or closed signal, and lens cap is to be disposed in a movable manner on the inwall of casing, in order to this mirror plate of open and close.Gear unit is to be disposed on the inwall of casing and in order to order about lens cap to move, and detect closed cell is the one side that is disposed on the inwall of casing and is positioned at mirror plate, touch and produce according to this closed stop signal in order to what receive lens cap, and detecting and opening the unit is to be disposed on the inwall of casing, in order to receive touching and the stop signal of generation unlatching according to this of lens cap.Control module is to be disposed in the casing and to open the unit with power switch, gear unit, detection closed cell and detection to connect, and control module is to open signal, closed signal, closed stop signal and open stop signal in order to receive.
When user's desire during with the closed mirror plate of lens cap, the user can the powered-down switch, power switch will be exported closed signal to control module, and control module receives behind the closed signal and orders about gear unit and rotate, and make lens cap move along with the rotation of gear unit and advance; When lens cap approaches to detect closed cell, lens cap will touch the detection closed cell, detect closed cell and will export closed stop signal to control module, control module receives and will order about this gear unit behind the closed stop signal and stop operating, make lens cap stop to move to advance and close mirror plate, in order to keep the cleaning of camera lens.
When user's desire is opened mirror plate with lens cap, the user can the power-on switch, power switch will be exported and open signal to control module, and control module receives behind the unlatching signal and orders about gear unit and rotate, and make lens cap move along with the rotation of gear unit and retreat; When lens cap approaches to detect the unlatching unit, lens cap will touch to detect opens the unit, detect the unlatching unit and will export the unlatching stop signal to control module, control module receives to open and will order about gear unit behind the stop signal and stop operating, make lens cap stop to move and retreat and open mirror plate, the image that camera lens throwed can be by mirror plate to projector.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Embodiment
The special design of the present invention one lens cap assembly, use mirror plate for user's folding projector, lens cap assembly comprises power switch, lens cap, gear unit, detection closed cell, detects and open unit and control module, and power switch, gear unit, detection closed cell and detection are opened the unit and all connected with control module.
Wherein, when the user opens or the powered-down switch, control module will order about gear unit and rotate, and make lens cap move to advance or retreat.When lens cap touches detection unlatching unit or detects closed cell, control module will order about this gear unit and stop operating, and make lens cap open or close mirror plate.Practical application as for lens cap assembly of the present invention will be as follows with the preferred embodiment description of drawings.
Please refer to Fig. 2, the synoptic diagram that it is depicted as according to the lens cap assembly of the preferred embodiments of the present invention is by the visual outward diagram that becomes in projector inside.In Fig. 2, projector 202 comprises casing 204, camera lens 206, lens cap assembly 208 and guidance device, and casing 204 is to have a mirror plate 210, and camera lens 206 is to be disposed in the casing 204, in order to the projection image.When if mirror plate 210 is not covered by anything, the image that camera lens 206 is throwed can be by mirror plate 210 to projector 202, to carry out the projection work of projector 202.Wherein, lens cap assembly 206 is to be disposed in the projector 202, and lens cap assembly 206 is to comprise power switch 212, control module 214, gear unit 216, lens cap 218, detection unlatching unit 220a and detect closed cell 220b.But lens cap 218 is the modes with folding to be disposed on the inwall of casing 204, in order to open or to close mirror plate 210.
More smooth and easy for lens cap 218 can be moved, the present invention can dispose guidance device in the inwall and the mirror plate 210 of casing 204, in order to moving of guiding lens cap 218, for example be guide bar 222a and the 222b that is parallel to each other, with the two ends, the relative left and right sides that slidably connect lens cap 218 respectively, make lens cap 218 to move around along the direction of the arrow 250 of Fig. 2; Simultaneously, mirror plate 210 is to be arranged between guide bar 222a and the 222b, makes lens cap 218 central authorities can align mirror plate 210, so by moving lens skull 218 to open or to close mirror plate 210.Wherein, guide bar 222a and 222b are the both sides that is positioned at mirror plate 210, with the drop shadow effect that does not have influence on camera lens 206 is principle, and the two ends end to end of guide bar 222a are to be disposed on the inwall of casing 204 by fixed leg 224a and 224b respectively, promptly have one between the inwall of guide bar 222a and casing 204 at interval.And the two ends end to end of guide bar 222b are to be disposed on the inwall of casing 204 by fixed leg 226a and 226b respectively, promptly also have this between the inwall of guide bar 222b and casing 204 at interval, in order to offer lens cap 217 space of slip are arranged.
The length that it should be noted that guide bar 222a and 222b must be enough long, allows the lens cap 218 can complete opening or close mirror plate 210, and the masked area of lens cap 218 must design the openings of sizes greater than mirror plate 210.So lens cap 218 can cover mirror plate 210 fully, to close mirror plate 210, prevent that extraneous dust from entering in the casing 204 via mirror plate 210, also avoid dust to be stained with and be distributed in camera lens 206, keep the cleaning of camera lens 206.
Power switch 212, gear unit 216, detection are opened unit 220a and are detected closed cell 220b and all connect with control module 214, power switch 212 is to be disposed in the casing 204, use for the user and can and export one according to this and open a signal or a closed signal, and then the action of mirror plate 210 is opened or closed to controls lens lid 218 respectively by the operation of the outside of casing 204.Wherein, gear unit 216 is to be disposed on the inwall of casing 216 and to be positioned at outside the left end edge of lens cap 218, move in order to order about lens cap 218, and gear unit 216 is to have the 216a of teeth portion, in order to the tooth-strip part 218a engagement at the left end edge of lens cap 218, and gear unit 216 is can reach counterclockwise direction clockwise to rotate, and advances or retreats to order about lens cap 218.
Detect closed cell 220b and be on the inwall that is disposed at casing 204 and be positioned at the right of mirror plate 210 and guide bar 222a, it is one side of the lower end of guidance device, in order to the shake-up of the teat 218b of the right-hand member of accepting lens cap 218 and export a closed stop signal according to this, promptly detect closed cell 220b and will cover 218 in order to detector lens and whether arrive at first precalculated position, with closed mirror plate 210.Detecting unlatching unit 220a is disposed on the inwall of casing 204, and be positioned at the right of guide bar 222a and detect the top of closed cell 220b, it is one side of the upper end of guidance device, in order to the shake-up of the teat 218b of the right-hand member of accepting lens cap 218 and export one according to this and open stop signal, promptly detect folding unit 220a and will cover 218 in order to detector lens and whether arrive at second precalculated position, to open mirror plate 210.
Control module 214 is to be disposed in the projector 202, open signal or closed signal and control gear unit 216 rotations in order to receive, make lens cap 218 advance or retreat, stop and control module 214 also can receive unlatching stop signal or closed stop signal and control gear unit 216 rotations, make lens cap 218 just finish the action of opening or closing mirror plate 210.
Refer again to Fig. 2, when the user does not use projector 202 and desire that lens cap 218 is closed mirror plate 210, at first, the user can also export closed signal to control module 214 by powered-down switch 212 according to this, then, control module 214 will be controlled gear unit 216 after receiving closed signal, make gear unit 216 rotate along the direction of the arrow 260 of Fig. 2.Then, because the cause of the 216a of teeth portion of gear unit 216 and the tooth-strip part 218b of lens cap 218 engagement, make lens cap 218 will be along with the rotation of gear unit 216 move along the direction of the arrow 250 of Fig. 2, i.e. lens cap 218 beginnings are moved to the lower end of guidance device.At this moment, teat 218b also leaves in detection unlatching unit 220a and follows lens cap 218 to move together and advance.
Then, when continuing to move, lens cap 218 advances and teat 218b when approaching to detect closed cell 220b, protrusion 218b will touch and detect closed cell 220b, promptly detect closed cell 220b and detect lens cap 218 and arrived at first precalculated position, detect closed cell 220b and will export closed stop signal to control module 214.Then, control module 214 receives will be controlled gear unit 216 behind the closed stop signal and stop operating, and lens cap 218 also stops to move.At this moment, lens cap 218 is just closed mirror plate 210, and lens cap 218 is also between camera lens 206 and mirror plate 210; avoid dust to enter in the casing 204 and len 206; as shown in Figure 3, wherein, Figure 3 shows that the lens cap of Fig. 2 closes the synoptic diagram of mirror plate.
Please refer to Fig. 3, when user's desire uses projector 202 and desire that lens cap 218 is opened mirror plate 210, at first, the user can also export the unlatching signal to control module 214 by power-on switch 212 according to this, then, control module 214 will be controlled gear unit 216 after receiving and opening signal, make gear unit 216 rotate along the direction of the arrow 360 of Fig. 3.Then, lens cap 218 will be along with the rotation of gear unit 216 moves along the direction of the arrow 350 of Fig. 3, i.e. lens cap 218 beginnings are moved to the upper end of guidance device.At this moment, teat 218b also leaves in detecting closed cell 220b and then lens cap 218 and moves together and retreat.
Then, when continuing to move, lens cap 218 retreats and teat 218b approaches to detect when opening unit 220a, protrusion 218b will touch to detect and open unit 220a, i.e. detection unlatching unit 220a detects lens cap 218 and has arrived at second precalculated position, detects unlatching unit 220a and will export the unlatching stop signal to control module 214.Then, control module 214 receives to open and will control gear unit 216 behind the stop signal and stop operating, and lens cap 218 also stops to move.At this moment, lens cap 218 is just opened mirror plate 210, and is and for example shown in Figure 2, and the image that camera lens 206 is throwed can be by mirror plate 210 to projector 202, to carry out the projection work of projector 202.
Wherein, when projector's power switch 212 was closed (Off), camera lens 206 was positioned a reception position and is accommodated in the casing 204; When projector's power switch 212 was opened (On), camera lens 206 was positioned a projected position and outside projection opening 210 stretches out in casing 204.
In addition, when user's powered-down switch 212, camera lens 206 can move to reception position from the projection position earlier, and camera lens 206 will be accommodated in the casing 204, and then, gear unit 216 just can begin to drive lens cap 218 and move to the lower end of guide bar 222a and 222b.In like manner, when user's power-on switch 212, gear unit 216 can pioneer's index glass skull 218 moves to the upper end of guide bar 222a and 222b, then, camera lens 206 just can begin to move to projected position from reception position, and camera lens 206 will be outside projection opening 210 stretches out in casing 204.
Right ripe this skill person can understand that all technology of the present invention is not limited thereto, for example lens cap assembly can be applied to digital camera (Digital Still Camera, DSC) and digital code camera (Digital VideoCamdera, DVC) etc. on the board, allow user the controls lens lid and the action of opening and closing easily, quite convenient.
The lens cap assembly that the above embodiment of the present invention is disclosed, allow the user open or during the powered-down switch, can order about lens cap closure or openness mirror plate, break away from the design yoke of user with the traditional lens cap of manual plug, so, lens cap assembly of the present invention simple to operate and meet modern's demand.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any insider; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.