Navigation device

Abstract

The utility model discloses a navigation device, which relates to the field of navigation and comprises a fixing frame, a driving device and a controller. The shell is connected with the fixing frame, the shell is provided with a containing cavity, and the two sides of the shell are each provided with an opening communicated with the containing cavity; the circuit board is connected with the fixing frame and arranged in the containing cavity, and a heat source is arranged on the circuit board; the heat radiator is connected with the shell and arranged in the containing cavity, the heat radiator further makes contact with the heat source and exchanges heat with the heat source, the heat radiator is provided with a heat radiation channel, at least parts of the two side walls of the heat radiator are located at the opening and matched with the opening, and the heat radiation channel is communicated with the heat source. The two ends of the heat dissipation channel extend to the corresponding openings in the two sides of the shell respectively. The navigation equipment provided by the technical scheme of the utility model can improve the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of navigation technology, and in particular to a navigation device. Background Technology

[0002] Currently, in-vehicle navigation devices are equipped with functional components such as motherboards, processors, graphics cards, and communication modules, all housed within a main unit casing. These electronic devices generate a significant amount of heat during operation, and the interior of a vehicle heats up rapidly after being exposed to sunlight, making the devices prone to overheating and shutdown. Existing navigation devices rely on heat exchange between a radiator and the external air for heat dissipation. However, the design of the ventilation holes and the radiator in navigation devices often fails to create an effective heat dissipation channel, obstructing airflow and causing air to stagnate inside the device, resulting in poor heat dissipation. Utility Model Content

[0003] The main purpose of this utility model is to provide a navigation device that solves the technical problem that the heat dissipation airflow of current navigation devices tends to stagnate inside the device, resulting in poor heat dissipation.

[0004] To achieve the above objectives, the navigation device proposed in this utility model includes:

[0005] Fixture;

[0006] The outer shell is connected to the fixing frame. The outer shell has a cavity, and openings communicating with the cavity are respectively opened on both sides of the outer shell.

[0007] A circuit board, connected to the fixing frame and disposed within the cavity, is provided with a heat source on the circuit board; and

[0008] A radiator is connected to the outer casing and disposed within the cavity, and the radiator is also in contact with the heat source and exchanges heat with the heat source. The radiator is provided with a heat dissipation channel, and at least part of the two side walls of the radiator are located at the opening and are adapted to the opening. The two ends of the heat dissipation channel extend to the openings on the corresponding sides of the outer casing.

[0009] In one embodiment, the housing includes a first side and a second side disposed opposite to each other, the opening includes a first heat dissipation port and a second heat dissipation port, the first side has the first heat dissipation port and the second side has the second heat dissipation port, the second side is provided with a limiting post, the limiting post divides the second heat dissipation port into a plurality of second sub-heat dissipation ports, the radiator is provided with a slot, and the limiting post is engaged in the slot.

[0010] In one embodiment, the heat sink is further provided with a plurality of clearance openings, and the circuit board is provided with a plurality of connecting devices, the connecting devices corresponding to the clearance openings and extending to the outside of the housing.

[0011] In one embodiment, the housing has a recessed portion, and the opening further includes a third heat dissipation vent. The third heat dissipation vent is formed on the side wall of the recessed portion, and a through-hole is formed at the bottom of the recessed portion. The through-hole corresponds to the clearance opening, and the connecting device communicates with the outside through the through-hole and the clearance opening.

[0012] In one embodiment, the navigation device further includes a cooling fan, the radiator has a receiving slot, the receiving slot is connected to the heat dissipation channel, the cooling fan is disposed in the receiving slot and blows air into the receiving slot to form a cooling airflow, and the cooling airflow is discharged to the outside of the housing through the heat dissipation channel.

[0013] In one embodiment, there are two cooling fans, and the two cooling fans are also connected to a bracket, which is fixedly connected to the radiator.

[0014] In one embodiment, the housing is provided with an air inlet, which is located on the side of the housing away from the fixing frame and corresponds to the cooling fan. External air enters the cavity through the air inlet and is discharged to both sides of the housing through the heat dissipation channel.

[0015] In one embodiment, the heat sink includes a connector and a plurality of spaced-apart heat sinks disposed on one side of the connector. A heat dissipation channel is formed between two adjacent heat sinks. The extending direction of the heat dissipation channel is consistent with the line connecting the openings on both sides of the housing. The connector is fixedly connected to the housing and contacts the heat source of the circuit board for heat exchange.

[0016] In one embodiment, a heat-conducting plate is further provided between the heat source and the connecting seat; and / or,

[0017] The circuit board is also provided with a support, and the connecting seat is also connected to the support.

[0018] In one embodiment, the housing further includes a grille portion corresponding to certain components on the circuit board, and the grille portion also includes a vent that communicates with the interior of the cavity; and / or,

[0019] The navigation device also includes a display screen, which is connected to the mounting bracket and located on the side of the mounting bracket away from the housing.

[0020] This utility model's technical solution involves fixing both the outer casing and the circuit board onto a mounting bracket. The outer casing forms a cavity to accommodate the circuit board and the heat sink, with openings on both sides communicating with the cavity. At least part of the side walls of the heat sink are located at these openings, and the heat dissipation channels of the heat sink extend to the corresponding openings at both ends. In this way, the heat dissipation channels extend to the openings on both sides of the outer casing, allowing hot air inside the channels to flow directly with external cold air without obstruction. Furthermore, the hot air inside the channels is directly exhausted to the outside and does not stagnate within the cavity, thereby improving the heat dissipation effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the navigation device provided by this utility model from one angle;

[0023] Figure 2 This is a structural schematic diagram of another embodiment of the navigation device provided by this utility model;

[0024] Figure 3 An exploded structural diagram of the navigation device provided by this utility model from one angle;

[0025] Figure 4 Another exploded structural diagram of an embodiment of the navigation device provided by this utility model;

[0026] Figure 5 A schematic diagram of the radiator and cooling fan in an embodiment of the navigation device provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Mounting bracket; 110. Display screen;

[0029] 200. Outer shell; 211. First heat dissipation vent; 212. Second heat dissipation vent; 213. Second sub-heat dissipation vent; 214. Third heat dissipation vent; 220. Limiting post; 230. Recess; 231. Through-hole; 240. Air inlet; 250. Grille section; 251. Vent;

[0030] 300, radiator; 310, card slot; 320, connector; 330, heat sink; 331, heat dissipation channel; 340, clearance opening; 350, receiving slot; 360, connecting channel; 370, connecting slot;

[0031] 400. Circuit board; 410. Heat-conducting plate; 420. Support;

[0032] 500. Cooling fan; 510. Bracket.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] In existing technologies, navigation devices rely on heat exchange between the radiator and the external air for heat dissipation. However, the design between the heat dissipation holes and the radiator of the navigation device cannot form an effective heat dissipation channel. The airflow is obstructed, and the airflow is easily trapped inside the device, resulting in poor heat dissipation.

[0038] This utility model proposes a navigation device.

[0039] Please see Figures 1 to 5 In one embodiment of this utility model, the navigation device includes: a mounting frame 100, a housing 200, a circuit board 400, and a heat sink 300. The housing 200 is connected to the mounting frame 100, and the housing 200 has a cavity. Openings communicating with the cavity are respectively opened on both sides of the housing 200. The circuit board 400 is connected to the mounting frame 100 and disposed in the cavity. A heat source is provided on the circuit board 400. The heat sink 300 is connected to the housing 200 and disposed in the cavity. The heat sink 300 is also in contact with the heat source and exchanges heat with the heat source. The heat sink 300 has a heat dissipation channel 331. At least a portion of the two side walls of the heat sink 300 is located at the opening and is adapted to the opening. The two ends of the heat dissipation channel 331 extend to the corresponding openings on both sides of the housing 200.

[0040] It should be noted that the mounting bracket 100 serves as the supporting frame for the entire navigation device. The navigation device also includes a display screen 110, which is connected to the mounting bracket 100 and located on the side of the mounting bracket 100 facing away from the housing 200. The display screen 110 and the housing 200 are located on opposite sides of the mounting bracket 100 and are fixedly connected to it. The housing 200 is screwed to the mounting bracket 100, and the display screen 110 is glued to the mounting bracket 100. The circuit board 400 has multiple electronic components, connectors, and connectors. The connectors and connectors are used for connecting external devices. Correspondingly, multiple notches are made on the housing 200 to avoid the connectors and connectors. One notch can correspond to one connector or connector, or multiple connectors and connectors can correspond to a larger notch, achieving both avoidance and heat dissipation. The chips in the electronic components generate a large amount of heat, and other components also generate heat. The heat sink 300 achieves heat dissipation through heat exchange with the heat source.

[0041] In this embodiment, openings are provided on both sides of the outer casing 200, the shape of which is adapted to the heat sink 300. At least part of the side walls of the heat sink 300 are located at the openings. Furthermore, the two ends of the heat dissipation channel 331 of the heat sink 300 are located at the openings, allowing the heat dissipation channel 331 to directly exchange heat with the external air. Hot air within the heat dissipation channel 331 will not remain in the cavity, improving heat dissipation efficiency. In specific implementation, the edge of the heat sink 300 is located between the inner and outer walls of the outer casing 200 at the openings, preventing it from extending beyond the outer casing 200 and affecting the overall aesthetics, and also preventing it from being located inside the outer casing 200 and hindering hot air exhaust. Additionally, it can be understood that in one embodiment, the openings on both sides of the outer casing 200 correspond to the two ends of the heat dissipation channel 331. One end of the heat dissipation channel 331 can serve as an air inlet, and the other end as an air outlet, enabling air convection and thus heat dissipation. In another embodiment, an air inlet is provided on the top surface of the housing 200, so that airflow enters the cavity through the air inlet and is discharged to both sides of the housing through the heat dissipation channel 331, thereby achieving multi-directional heat dissipation and improving the heat dissipation effect.

[0042] This utility model's technical solution involves fixing both the outer casing 200 and the circuit board 400 onto a mounting bracket 100. The outer casing 200 forms a cavity to accommodate the circuit board 400 and the heat sink 300, with openings communicating with the cavity on both sides of the outer casing 200. At least part of the side walls of the heat sink 300 are located at these openings, and the heat dissipation channels 331 of the heat sink 300 extend to the corresponding openings at both ends. In this way, the heat dissipation channels 331 extend to the openings on both sides of the outer casing 200, allowing hot air within the heat dissipation channels 331 to flow directly with external cold air without obstruction. Furthermore, the hot air within the heat dissipation channels 331 is directly exhausted to the outside and does not stagnate within the cavity, thereby improving the heat dissipation effect.

[0043] In one embodiment, the outer casing 200 includes a first side and a second side disposed opposite to each other, and the opening includes a first heat dissipation port 211 and a second heat dissipation port 212. The first side has the first heat dissipation port 211 and the second side has the second heat dissipation port 212. The second side is provided with a limiting post 220, which divides the second heat dissipation port 212 into a plurality of second sub-heat dissipation ports 213. The radiator 300 is provided with a slot 310, and the limiting post 220 is engaged in the slot 310.

[0044] In the specific implementation process, the line connecting the first side and the second side is consistent with the extension direction of the heat dissipation channel 331. The first heat dissipation port 211 and the second heat dissipation port 212 are arranged opposite each other and correspond to the heat dissipation channel 331, allowing hot air in the heat dissipation channel 331 within the cavity to be directly discharged. The first heat dissipation port 211 is adapted to one side of the heat sink 300, with the entire side of the heat sink 300 located at the first heat dissipation port 211, ensuring unobstructed airflow and improving heat dissipation. The setting of the limiting post 220 serves two purposes: firstly, it increases the strength of the outer shell 200, preventing damage to the heat sink 300 and internal components when the outer shell 200 is compressed; secondly, the limiting post 220, when engaged in the slot 310 of the heat sink 300, also serves a positioning function, facilitating the installation of the outer shell 200; and thirdly, it prevents the heat sink 300 from protruding from the outer shell 200, ensuring overall aesthetics.

[0045] In one embodiment, the radiator 300 is further provided with a plurality of clearance openings 340, and the circuit board 400 is provided with a plurality of connecting devices, which correspond to the clearance openings 340 and extend to the outside of the housing 200.

[0046] In the specific implementation process, it should be noted that, in order to ensure heat dissipation effect, the heat sink 300 has a relatively large distribution area within the cavity and on the circuit board 400. Understandably, the circuit board 400 has multiple connecting devices for connecting to external devices. A clearance opening 340 is provided on the heat sink 300 to facilitate communication between the connecting devices and the outside. Of course, to avoid interference between the heat sink 300 and the external device wiring, the thickness of the corresponding portion of the heat sink 300 is reduced, and the outer casing 200 is correspondingly positioned to match the heat sink 300.

[0047] Specifically, the housing 200 is provided with a recess 230, and the opening also includes a third heat dissipation vent 214. The third heat dissipation vent 214 is opened on the side wall of the recess 230, and a through-hole 231 is opened at the bottom of the recess 230. The through-hole 231 corresponds to the clearance vent 340, and the connecting device communicates with the outside through the through-hole 231 and the clearance vent 340.

[0048] In this embodiment, the recessed portion 230 corresponds to the portion of the heat sink 300 where the clearance opening 340 is provided. That is, the connecting device communicates with the outside through the through opening 231 and the clearance opening 340, facilitating the connection of external devices. In this embodiment, a third heat dissipation opening 214 is also provided on the side wall of the recessed portion 230, so that the internal heat sink 300 also communicates with the outside for heat dissipation through the third heat dissipation opening 214, avoiding obstruction of the heat dissipation channel 331 and ensuring the heat dissipation effect.

[0049] refer to Figures 3 to 5As shown, in one embodiment, the navigation device further includes a cooling fan 500. The radiator 300 is provided with a receiving groove 350, which is connected to the heat dissipation channel 331. The cooling fan 500 is disposed in the receiving groove 350 and blows air into the receiving groove 350 to form a cooling airflow. The cooling airflow is discharged to the outside of the housing 200 through the heat dissipation channel 331.

[0050] In this embodiment, the cooling fan 500 blows air towards the heat sink 300, and the airflow flows through the heat dissipation channel 331, thereby improving the heat dissipation effect. Specifically, the side of the heat sink 300 away from the circuit board 400 has a recessed receiving groove 350, which is connected to the heat dissipation channel 331. The cooling fan 500 is fixed in the receiving groove 350 and blows air towards it. The airflow enters the heat dissipation channel 331 from the receiving groove 350, increasing the airflow speed within the heat dissipation channel 331, thereby improving the heat dissipation effect. It can be understood that by the cooling fan 500 blowing air, the airflow flows from the receiving groove 350 towards both sides of the outer casing 200 to the outside of the outer casing 200, achieving heat dissipation in two directions.

[0051] refer to Figure 5 As shown, further, two cooling fans 500 are provided, and the two cooling fans 500 are also connected to a bracket 510, which is fixedly connected to the radiator 300. In specific implementation, the two cooling fans 500 are fixed on the bracket 510, and the bracket 510 is fixed to the radiator 300 by bolts. The two cooling fans 500 are arranged side by side on the radiator 300, and the line connecting the two cooling fans 500 is consistent with the length direction of the radiator 300, so that each heat dissipation channel 331 is connected to the receiving groove 350, thereby allowing the air generated by the two cooling fans 500 to be discharged through each heat dissipation channel 331.

[0052] In practical implementation, the radiator 300 is provided with two receiving slots 350, which are connected by a connecting channel 360. The connecting channel 360 is connected to the heat dissipation channel 331, allowing the airflow generated by the cooling fan 500 to enter the heat dissipation channel 331 between the two cooling fans 500 through the connecting channel 360, thereby improving the heat dissipation effect. The line connecting the two cooling fans 500 is perpendicular to the extension direction of the heat dissipation channel 331, so that the heat generated by the cooling fan 500 can be discharged quickly and directly through the heat dissipation channel 331.

[0053] The radiator 300 also has a connecting slot 370, which connects two receiving slots 350. The bracket 510 between the two fans is located inside the receiving slot 350. There are two connecting channels 360, which are located on both sides of the connecting slot 370, so that the two receiving slots 350 are connected by multiple channels, which facilitates the flow of air.

[0054] In one embodiment, the housing 200 is provided with an air inlet 240, which is located on the side of the housing 200 away from the fixing frame 100 and corresponds to the cooling fan 500. External air enters the cavity through the air inlet 240 and is discharged to both sides of the housing 200 through the heat dissipation channel 331.

[0055] In the specific implementation process, an air inlet 240 is opened on the part of the outer shell 200 opposite to the heat sink 300. The air inlet 240 is set opposite to the cooling fan 500. Under the action of the cooling fan 500, external cold air enters the cavity from the air inlet 240 and enters the heat dissipation channel 331 through the receiving groove 350, forming a hot airflow. The hot airflow is directly discharged from both sides of the outer shell 200 through the heat dissipation channel 331, so it will not stay in the cavity and the heat dissipation effect is good.

[0056] In one embodiment, the heat sink 300 includes a connector 320 and a plurality of spaced-apart heat sinks 330 disposed on one side of the connector 320. A heat dissipation channel 331 is formed between two adjacent heat sinks 330. The extending direction of the heat dissipation channel 331 is consistent with the line connecting the openings on both sides of the housing 200. The connector 320 is fixedly connected to the housing 200, and the connector 320 contacts the heat source of the circuit board 400 and exchanges heat.

[0057] In the specific implementation process, the connecting seat 320 exchanges heat with the heat source, and the heat is dissipated by exchanging heat with the air through the heat sink 330. In this embodiment, the space between the two heat sinks 330 forms a heat dissipation channel 331. The heat dissipation channel 331 is directly connected to the outside of the housing 200, and the extension direction is consistent with the line connecting the two openings, so as to form a connecting channel between the two sides of the housing 200 for heat dissipation.

[0058] A heat-conducting plate 410 is also provided between the heat source and the connector 320. In the specific implementation process, the heat-conducting plate 410 uses thermally conductive silicone to improve the heat exchange efficiency and the heat dissipation effect of the heat source.

[0059] It should be noted that the heat source on the circuit board 400 is located near one end of the circuit board 400, while the heat sink 300 is distributed across most of the space of the circuit board 400. There is a certain gap between the heat sink 300 and the circuit board 400 except for the heat source portion, which may cause wear between the heat sink 300 and the circuit board 400 due to movement. In one embodiment, the circuit board 400 is also provided with a support 420, and the connecting seat 320 is connected to the support 420 to improve the stability between the heat sink 300 and the circuit board 400.

[0060] In one embodiment, the outer casing 200 is further provided with a grille portion 250, which corresponds to some components on the circuit board 400. The grille portion 250 also has a vent 251, which communicates with the interior of the cavity. The grille portion 250 serves both aesthetic and heat dissipation purposes. It is understood that areas on the circuit board 400 with many components will generate heat, and the heat sink 300 cannot contact these components for heat dissipation. Therefore, this embodiment achieves air circulation and thus heat dissipation by providing the vent 251.

[0061] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the inventive concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A navigation device, characterized in that, include: Fixture; The outer shell is connected to the fixing frame. The outer shell has a cavity, and openings communicating with the cavity are respectively opened on both sides of the outer shell. A circuit board, connected to the fixing frame and disposed within the cavity, is provided with a heat source on the circuit board; and A radiator is connected to the outer casing and disposed within the cavity, and the radiator is also in contact with the heat source and exchanges heat with the heat source. The radiator is provided with a heat dissipation channel, and at least part of the two side walls of the radiator are located at the opening and are adapted to the opening. The two ends of the heat dissipation channel extend to the openings on the corresponding sides of the outer casing.

2. The navigation device as described in claim 1, characterized in that, The outer casing includes a first side and a second side disposed opposite to each other. The opening includes a first heat dissipation port and a second heat dissipation port. The first side has the first heat dissipation port, and the second side has the second heat dissipation port. The second side is provided with a limiting post, which divides the second heat dissipation port into a plurality of second sub-heat dissipation ports. The radiator is provided with a slot, and the limiting post is engaged in the slot.

3. The navigation device as described in claim 2, characterized in that, The radiator is also provided with multiple clearance openings, and the circuit board is provided with multiple connecting devices, which correspond to the clearance openings and extend to the outside of the housing.

4. The navigation device as described in claim 3, characterized in that, The outer casing has a recessed portion, and the opening further includes a third heat dissipation vent. The third heat dissipation vent is opened on the side wall of the recessed portion, and a through opening is opened at the bottom of the recessed portion. The through opening corresponds to the clearance opening, and the connecting device communicates with the outside through the through opening and the clearance opening.

5. The navigation device as described in claim 1, characterized in that, The navigation device also includes a cooling fan. The radiator has a receiving slot, which is connected to the heat dissipation channel. The cooling fan is located in the receiving slot and blows air into the receiving slot to form a cooling airflow. The cooling airflow is discharged to the outside of the housing through the heat dissipation channel.

6. The navigation device as described in claim 5, characterized in that, The cooling fan is provided in two parts, and the two cooling fans are also connected to a bracket, which is fixedly connected to the radiator.

7. The navigation device as described in claim 6, characterized in that, The outer casing is provided with an air inlet, which is located on the side of the outer casing away from the fixing frame and corresponds to the cooling fan. External air enters the cavity through the air inlet and is discharged to both sides of the outer casing through the heat dissipation channel.

8. The navigation device as described in claim 1, characterized in that, The heat sink includes a connector and a plurality of spaced-apart heat sinks arranged side by side on one side of the connector. A heat dissipation channel is formed between two adjacent heat sinks. The extension direction of the heat dissipation channel is consistent with the line connecting the openings on both sides of the housing. The connector is fixedly connected to the housing and contacts the heat source of the circuit board for heat exchange.

9. The navigation device as described in claim 8, characterized in that, A heat-conducting plate is also provided between the heat source and the connecting seat; and / or, The circuit board is also provided with a support, and the connecting seat is also connected to the support.

10. The navigation device as described in claim 1, characterized in that, The outer casing also includes a grille section, which corresponds to some components on the circuit board, and the grille section also includes a vent, which communicates with the interior of the cavity; and / or, The navigation device also includes a display screen, which is connected to the mounting bracket and located on the side of the mounting bracket away from the housing.

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