MOBILE TERMINAL UTILITY MODEL

Abstract

A mobile terminal includes a terminal housing, a projector, a heat dissipation block, and a fan. The terminal housing comprises a frame and a heat dissipation chamber connected to an inner periphery of the frame. The heat dissipation chamber has an assembly opening, an air intake duct, and an exhaust duct. The projector is located inside the terminal housing and outside the heat dissipation chamber. The heat dissipation block is thermally conductive and permanently connected to the projector. It is covered and secured to the assembly opening of the heat dissipation chamber and is designed to absorb the heat generated by the projector during operation.The fan is located in the heat dissipation chamber and is covered by the heat dissipation block; it is also configured to draw outside air into the heat dissipation chamber through the air intake duct and expel it through the air exhaust duct.

Description

mobile terminals Technical Field

[0001] The present application relates to the technical field of mobile terminals, and in particular to a mobile terminal with a projector. Background Art

[0002] A projection mobile terminal is a mobile terminal with an integrated projection function. Given that micro-projection technology has been developed for several years and is relatively stable and mature, the appearance of the mobile terminal remains unchanged even with the addition of the projection function.

[0003] Current projection mobile terminals either have poor heat dissipation performance or poor waterproof performance. For example, the projection mobile phone with an optimized radiator structure disclosed in CN207010747U has an internal cavity connected to the outside world through an air inlet and an air outlet, and has poor waterproof performance.

[0004] Summary of the Invention

[0005] The present application provides a mobile terminal to solve the technical problem in the prior art that projection mobile terminals fail to achieve both heat dissipation and waterproof performance.

[0006] In order to solve the above technical problems, the present application provides a mobile terminal, including a terminal shell, a projector, a heat sink and a blower. The terminal shell includes a frame and a heat sink cavity connected to the inner periphery of the frame, the heat sink cavity has an assembly opening, an air inlet channel and an air outlet channel; the projector is arranged in the terminal shell and is located on the outside of the heat sink cavity; the heat sink is fixedly connected to the projector for thermal conductivity and is sealed at the assembly opening of the heat sink cavity, and the heat sink is used to absorb the heat generated when the projector is working; the blower is arranged in the heat sink cavity and is covered by the heat sink block, and the blower is used to allow external air to enter the heat sink cavity through the air inlet channel and be discharged through the air outlet channel.

[0007] Since the mobile terminal provided by the present application is further provided with a heat dissipation cavity in the frame, it is easy to manufacture, has a stable structure, is easy to assemble, has good heat dissipation performance and good sealing performance. During assembly, the heat dissipation block cover that is thermally fixedly connected to the projector is screwed to the heat dissipation cavity. The heat dissipation block and the heat dissipation cavity cover are boxed together to form a heat dissipation sealed cavity. Even if liquid enters the heat dissipation cavity through the air inlet channel or the air outlet channel, it will not affect other electronic components inside the mobile terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG1 is a schematic diagram of the three-dimensional structure of a mobile terminal provided by the present application;

[0009] FIG2 is an exploded schematic diagram of the mobile terminal shown in FIG1 from one perspective;

[0010] FIG3 is an exploded schematic diagram of the mobile terminal shown in FIG1 from another perspective;

[0011] FIG4 is a schematic structural diagram of some components in FIG3 ;

[0012] FIG5 is a schematic structural diagram of some components in FIG2;

[0013] FIG6 is an enlarged schematic diagram of some components in FIG5;

[0014] FIG7 is an enlarged schematic diagram of some components in FIG4;

[0015] FIG8 is an enlarged schematic diagram of some components in FIG4;

[0016] FIG9 is a schematic cross-sectional structural diagram of a partial component in FIG8 . DETAILED DESCRIPTION

[0017] As shown in Figures 1 to 9, an embodiment of the present application provides a mobile terminal, which can be a mobile phone or tablet computer, and includes components such as a screen 81, a terminal housing 2, a projector 9, a heat sink 7, a blower 4, and a terminal back cover 17. Of course, the mobile terminal also includes other conventional functional components such as a battery and a main control circuit board, which are not related to the main points of the invention and are not described here.

[0018] As shown in Figures 3 to 5, the terminal housing 2 includes a frame and a heat dissipation cavity 30 connected to the inner periphery of the frame. The heat dissipation cavity 30 has an interconnected assembly opening 31, an air inlet duct 32, and an air outlet duct 33. The projector 9 is disposed within the terminal housing 2 and is located outside the heat dissipation cavity 30. A heat dissipation block 7 is fixedly connected to the projector 9 for thermal conductivity and is sealed at the assembly opening 31 of the heat dissipation cavity 30. The heat dissipation block 7 is used to absorb heat generated by the projector 9 during operation. A blower 4 is disposed within the heat dissipation cavity 30 and is sealed by the heat dissipation block 7. The blower 4 is used to allow external air to enter the heat dissipation cavity 30 through the air inlet duct 32 and be discharged through the air outlet duct 33, thereby removing heat from the projector 9.

[0019] As shown in FIG. 2 and FIG. 3 , the terminal housing 2 further includes a rib plate 82 , which is embedded in the frame and divides the frame into a front cavity and a rear cavity. The rear cavity includes a heat dissipation cavity 30 and a main cavity 83 .

[0020] The volume of the heat dissipation cavity 30 is smaller than that of the main cavity 83. The heat dissipation cavity 30 is located at the end corner or side of the main cavity 83. The heat dissipation cavity 30 includes a first width portion 30a close to the air inlet channel 32 and a second width portion 30b close to the air outlet channel 33. The width of the first width portion 30a is greater than the width of the second width portion 30b to form a step assembly structure 30c and then position the card-mounted blower 4, which is extremely convenient to assemble.

[0021] The main cavity 83 can be used to assemble functional components such as batteries and main control circuit boards.

[0022] The mobile terminal also includes a screen 81, a terminal back cover 17, and a first sealing ring 18. The screen 81 is assembled based on the front cavity. The frame or the terminal back cover 17 is provided with a first sealing groove 29. The first sealing ring 18 is matched and arranged in the first sealing groove 29. The terminal back cover 17 and the frame clamp the first sealing ring 18 and are fixed by multiple screws to form a sealed fit.

[0023] As shown in FIG. 4 and FIG. 5 , the frame may include a pair of short frame bodies 21 and a pair of long frame bodies 23 connected to each other.

[0024] In the embodiment of the present application, the short frame 21 exposes the air outlet channel 33 , and the long frame 23 exposes the air inlet and outlet channel 32 .

[0025] In other embodiments, the short frame 21 exposes the air inlet and outlet channels 32 , and the long frame 23 exposes the air outlet channels 33 .

[0026] As shown in Figure 4, the frame and the heat dissipation cavity 30 are integrally injection molded. The heat dissipation cavity 30 includes a surrounding wall 35 and a bottom plate 36 connected to each other. The air inlet channel 32 can be set on the surrounding wall 35, and the air outlet channel 33 can be set on the surrounding wall 35 or on the bottom plate 36.

[0027] As shown in Figures 2 to 4, the mobile terminal also includes a second sealing ring 6. A sealing groove 37 is provided on the top of the surrounding wall 35 for assembling the second sealing ring 6. The heat dissipation block 7 is pressed onto the second sealing ring 6 and seals with the top of the surrounding wall 35.

[0028] The first sealing ring 18 and the second sealing ring 6 form a double seal inside the mobile terminal, and the main cavity 83 is well sealed and protected. Whether liquid enters the heat dissipation cavity 30 has no effect on the main control circuit board inside the mobile terminal. In other words, the heat dissipation cavity 30 is a liquid-enterable area, and the main cavity 83 can be isolated from liquid entry through the double seal of the first sealing ring 18 and the second sealing ring 6. Such a setting can better balance the heat dissipation performance and the waterproof performance.

[0029] As shown in Figure 4, the heat dissipation cavity 30 is surrounded by a plurality of locking posts 38, and the heat dissipation block 7 is provided with a plurality of locking holes corresponding to the locking posts 38. The surrounding wall 35 is provided with a cable outlet slot 34 for leading out the cable provided by the blower 4. The wires provided by the blower 4 can be electrically connected to the main control circuit board for heat dissipation when needed. The cable outlet slot 34 and the cable provided by the blower 4 can be further sealed by means of glue or other means.

[0030] Positioning posts 39 are provided around the periphery of the heat dissipation cavity 30 , and the heat dissipation block 7 is provided with positioning holes 72 corresponding to the positioning posts 39 for quick fool-proof assembly.

[0031] A first folded edge portion 73 and a second folded edge portion 74 are integrally extended from the side of the heat dissipation block 7 close to the projector 9. The first folded edge portion 73 and the second folded edge portion 74 are thermally connected to the projector 9. An auxiliary heat conducting member 75 is selectively provided on the outer surface of the heat dissipation block 7. The auxiliary heat conducting member 75 can increase the heat conduction path and improve the heat conduction efficiency. The auxiliary heat conducting member 75 can be fixed on the outer surface of the heat dissipation block 7 at one end and fixed on the second folded edge portion 74 at the other end.

[0032] As shown in FIG. 2 , the rib plate 82 may be provided with an array of interlocking holes 821 . As shown in FIG. 5 , the bottom plate 36 has an array of interlocking convex bumps 361 corresponding to the interlocking holes 821 .

[0033] The inner surface of the heat sink 7 is further provided with heat sink fins 71 , which can be connected to the heat sink 7 by laser welding. The heat sink fins 71 are arranged close to the air outlet channel 33 , and the blower 4 is arranged close to the air inlet channel 32 .

[0034] As shown in Figures 4 to 7, the projector 9 is mounted within the terminal housing 2. A focus gear 91 is built into the side of the projector 9. The mobile terminal also includes a worm wheel 50 and a worm 40 for focusing. The worm wheel 50 is rotatably mounted relative to the terminal housing 2 and meshes with the focus gear 91. The first end of the worm 40 meshes with the worm wheel 50, while the second end of the worm 40 extends out of the terminal housing 2. By rotating the worm 40 outside the mobile terminal, the worm wheel 50 and the focus gear 91 are sequentially driven, thereby fine-tuning the focal length of the projector 9. Since each rotation of the worm 40 results in only one tooth rotation of the worm wheel 50, a larger reduction ratio can be achieved, enabling precise fine-tuning of the focal length.

[0035] The short frame body 21 is provided with a first plug-in hole 22 for plugging in the built-in lens 92 of the projector 9, and the long frame body 23 is provided with a second plug-in hole 24 for plugging in the worm gear 40; or the short frame body 21 is provided with a first plug-in hole 22 for plugging in the worm gear 40, and the long frame body 23 is provided with a second plug-in hole 24 for plugging in the built-in lens 92 of the projector 9.

[0036] As shown in FIG6 , the terminal housing 2 further includes an extension plate 26, which is integrally connected to the short frame body 21 and / or the long frame body 23. The extension plate 26 is further provided with a support plate 27, which has a support hole 28 therein. The support hole 28 is aligned with the second insertion hole 24, and the support hole 28 and the second insertion hole 24 respectively support the ends of the worm 40. A shaft is provided on the extension plate 26 or the rib plate 82, and the worm gear 50 is rotatably mounted on the shaft and limited in position by a stopper 53. The stopper 53 may be a screw.

[0037] In the embodiment of the present application, the worm gear 50 includes an axially connected helical tooth portion 51 and a straight tooth portion 52 , the helical tooth portion 51 meshes with the worm 40 , and the straight tooth portion 52 meshes with the focusing gear 91 .

[0038] A focus adjustment handle 41 is provided at the second end of the worm 40 . The focus adjustment handle 41 is disc-shaped and has a plurality of tooth grooves 411 provided on the outer circumference thereof.

[0039] The worm 40 includes a focus adjustment handle 41, a sealing assembly section 42, a threaded section 43, and a rotating section 44 connected in sequence from the outside to the inside. The diameters of the focus adjustment handle 41, the sealing assembly section 42, the threaded section 43, and the rotating section 44 decrease in sequence. The focus adjustment handle 41 is limitedly assembled on the outside of the second insertion hole 24, the sealing assembly section 42 is inserted into the second insertion hole 24, and the sealing assembly section 42 is provided with a sealing groove 421 for assembling the focusing seal ring 14. The threaded section 43 is engaged with the worm gear 50, and the rotating section 44 is rotatably matched with the support hole 28.

[0040] A snap ring 13 is mounted on the inner side of the long frame 23. Alternatively, a snap ring groove is provided on the rotating section 44 for mounting the snap ring 13. The snap ring 13 can be mounted on the side of the support plate 27 away from the second insertion hole 24.

[0041] Preferably, the long frame body 23 is provided with a semi-enclosed retaining wall 25 on the outer periphery of the second plug-in hole 24. The semi-enclosed retaining wall 25 can prevent the focus adjustment handle 41 from being easily touched. The user can rotate the focus adjustment handle 41 through the opening part of the semi-enclosed retaining wall 25. The opening part can be facing the rear end of the mobile terminal, that is, the end opposite to the built-in lens 92 of the plug-in projector 9.

[0042] In addition, metal side strips 84 are further fixed to the sides of the long frame body 23 to enhance the structural strength of the mobile terminal.

[0043] The mobile terminal provided by the present application has a terminal housing 2 provided with a heat dissipation cavity 30 integrally formed with the frame. It is easy to manufacture, has a stable structure, is easy to assemble, has good heat dissipation performance and good sealing performance. During assembly, the heat dissipation block 7, which is thermally fixedly connected to the projector 9, is screwed to the heat dissipation cavity 30. A dustproof net can be provided for the air inlet channel 32, and a grid can be provided for the air outlet channel 33. After the heat dissipation block 7 and the heat dissipation cavity 30 are covered, a heat dissipation sealed cavity is formed. Even if liquid enters the cavity through the air inlet channel 32 or the air outlet channel 33, it will not affect other electronic components inside the mobile terminal, and is safe and reliable. The present application uses a worm gear 50 and a worm 40 for precise focusing, which is compact in structure and easy to operate.

Claims

1. A mobile terminal, comprising: A terminal housing, including a frame body and a heat dissipation cavity connected to the inner periphery of the frame body. The heat dissipation cavity has an assembly opening, an air inlet channel, and an air outlet channel; A projector, disposed inside the terminal housing and outside the heat dissipation cavity; A heat dissipation block, thermally and fixedly connected to the projector and hermetically connected to the assembly opening of the heat dissipation cavity. The heat dissipation block is used to absorb the heat generated when the projector works; A blower, disposed inside the heat dissipation cavity and covered by the heat dissipation block. The blower is used to allow external air to enter the heat dissipation cavity through the air inlet channel and discharge through the air outlet channel.

2. The mobile terminal according to claim 1, wherein: The terminal housing further includes a rib plate, which is embedded in the frame body and divides the frame body into a front cavity and a rear cavity. The rear cavity includes the heat dissipation cavity and a main cavity. The volume of the heat dissipation cavity is smaller than the volume of the main cavity. The heat dissipation cavity is located at the end corner or side of the main cavity. The heat dissipation cavity includes a first width portion near the air inlet channel and a second width portion near the air outlet channel. The width of the first width portion is greater than the width of the second width portion to form a stepped assembly structure for positioning and clamping the blower; The mobile terminal further includes a screen, a terminal back cover, and a first sealing ring. The screen is assembled based on the front cavity. The frame body or the terminal back cover is provided with a first sealing groove. The first sealing ring is disposed in the first sealing groove. The terminal back cover and the frame body clamp the first sealing ring to form a sealed fit; The frame body includes a pair of short frame bodies and a pair of long frame bodies connected to each other; The short frame body exposes the air outlet channel, and the long frame body exposes the air inlet channel; or The short frame body exposes the air inlet channel, and the long frame body exposes the air outlet channel.

3. The mobile terminal according to claim 1, wherein: The frame body and the heat dissipation cavity are integrally injection-molded. The heat dissipation cavity is composed of a connected surrounding wall and a bottom plate. The air inlet channel is disposed on the surrounding wall, and the air outlet channel is disposed on the surrounding wall or on the bottom plate.

4. The mobile terminal according to claim 3, wherein: The mobile terminal further includes a second sealing ring. The top of the surrounding wall is provided with a second sealing groove for assembling the second sealing ring. The heat dissipation block is pressed on the second sealing ring and is hermetically fitted with the top of the surrounding wall.

5. The mobile terminal according to claim 3, wherein, A plurality of locking columns are provided around the heat dissipation cavity, and a wiring lead-out groove is provided on the surrounding wall.

6. The mobile terminal according to claim 1, wherein, Positioning columns are provided around the heat dissipation cavity, and the heat dissipation block is provided with positioning holes corresponding to the positioning columns.

7. The mobile terminal according to claim 1, wherein, A first folded edge portion and a second folded edge portion are integrally extended from the side of the heat dissipation block close to the projector. The first folded edge portion and the second folded edge portion are thermally connected to the projector. An auxiliary heat conducting member is selectively provided on the outer surface of the heat dissipation block.

8. The mobile terminal according to claim 1, wherein, The mobile terminal is a mobile phone or a tablet computer. Heat dissipation fins are further provided on the inner surface of the heat dissipation block. The heat dissipation fins are disposed close to the air outlet channel, and the blower is disposed close to the air inlet channel.

9. The mobile terminal according to claim 2, wherein, The side of the projector has a built-in focusing gear, and the mobile terminal further includes: A worm gear, rotatably arranged relative to the terminal housing and meshing with the focusing gear; A worm, with a first end meshing with the worm gear and a second end protruding from the terminal housing.

10. The mobile terminal according to claim 9, wherein: The short frame body is provided with a first insertion hole for inserting the built-in lens of the projector, and the long frame body is provided with a second insertion hole for inserting the worm; or The short frame body is provided with a first insertion hole for inserting the worm, and the long frame body is provided with a second insertion hole for inserting the built-in lens of the projector.

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