CN114637113A - Wearable vision enhancement equipment with heat radiation assembly - Google Patents

Wearable vision enhancement equipment with heat radiation assembly Download PDF

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Publication number
CN114637113A
CN114637113A CN202210147066.8A CN202210147066A CN114637113A CN 114637113 A CN114637113 A CN 114637113A CN 202210147066 A CN202210147066 A CN 202210147066A CN 114637113 A CN114637113 A CN 114637113A
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heat
evaporator
condenser
heat dissipation
vision enhancement
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CN202210147066.8A
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CN114637113B (en
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孙锲
黄茂荃
杜慕
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Shandong University
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Shandong University
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • F28D15/043—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure forming loops, e.g. capillary pumped loops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

The invention provides wearable vision enhancement equipment with a heat dissipation assembly, which relates to the field of vision enhancement equipment and comprises a glasses body, a head band and a loop heat pipe, wherein the loop heat pipe comprises a compensator, an evaporator and a condenser which are sequentially communicated to form a closed loop, and the evaporator is arranged corresponding to a heat source in the glasses body and forms heat exchange with the heat source; the condenser is arranged on the head band; capillary cores are arranged in the compensator and the evaporator to drive the loop heat pipe to circulate; aiming at the problems of unreasonable distribution and poor heat dissipation performance of a heat dissipation assembly of the existing wearable vision enhancement equipment, the evaporator matched with the heat source distribution position is adopted to exchange heat with the heat source, the condenser is arranged at the head band position and isolated from the evaporator, the heat dissipation assembly is separately arranged on each part of the wearable equipment, the weight distribution is optimized, the wearing comfort level is improved, and the heat dissipation performance of the heat dissipation assembly can be improved by reducing heat concentration.

Description

Wearable vision enhancement equipment with heat radiation assembly
Technical Field
The invention relates to the field of vision enhancement equipment, in particular to wearable vision enhancement equipment with a heat dissipation assembly.
Background
Visual enhancement technologies include Virtual Reality (VR), Augmented Reality (AR) or Mixed Reality (MR) technologies, and with the development of visual algorithms and communication technologies, corresponding wearable visual enhancement devices are also continuously advancing, such as VR glasses, AR glasses and the like. What bring simultaneously with this is that the continuous rising of wearable vision enhancement equipment complete machine total power consumption, the problem of generating heat of equipment is also more and more serious, and the unreasonable direct performance that has influenced equipment of cooling system design still can influence the use experience of wearing person.
In order to improve the problem, a calculation chip with large heat productivity and the like are separated from the wearable part and connected through a data line, so that the occupied area of the whole equipment is too large; because the prior wearable vision enhancement equipment is developed towards light weight, chips with large heat productivity such as a computing chip and the like are integrated on a wearable part, the weight limit of the wearable vision enhancement equipment and the temperature limit of direct contact of a human body are severer under the limits of small volume and light weight, and the heat of a heat source region is radiated by adopting a liquid cooling, air cooling or mixed heat radiation mode in the prior art, so that the temperature problem can be relieved to a certain extent, and the heat radiation requirement of the heat source on a heat radiation component can not be met; the wearable vision enhancement equipment directly contacts the surface of a human body in the operation process, and generates water mist to block sight under the influence of temperature; the large-volume heat dissipation assembly can greatly increase the weight and the volume of the wearable vision enhancement equipment, and the requirement of light weight cannot be met; the performance release of the light wearable vision enhancement device is limited, and the use experience requirements of a wearer are difficult to meet.
Disclosure of Invention
The invention aims to provide wearable vision enhancement equipment with a heat dissipation assembly, aiming at the defects in the prior art, the heat exchange is carried out between an evaporator and a heat source which are matched with each other in the distribution position of the heat source, a condenser is arranged at the position of a head band and is isolated from the evaporator, the heat dissipation assembly is separately arranged on each part of the wearable equipment, the weight distribution is optimized, the wearing comfort degree is improved, and the heat concentration can be reduced so as to improve the heat dissipation performance of the heat dissipation assembly.
In order to achieve the purpose, the following scheme is adopted:
a wearable vision enhancement device with a heat dissipation assembly comprises a glasses body, a head band and a loop heat pipe, wherein the loop heat pipe comprises a compensator, an evaporator and a condenser which are sequentially communicated to form a closed loop, the evaporator is arranged corresponding to a heat source in the glasses body and forms heat exchange with the heat source; the condenser is arranged on the head band; capillary cores are arranged in the compensator and the evaporator to drive the loop heat pipe to circulate.
Furthermore, the evaporators are arranged in parallel and are communicated with the condenser, each evaporator at least corresponds to one heat source in the glasses body, and the evaporators and the corresponding heat sources form heat exchange.
Furthermore, the evaporators are communicated with the compensators in a one-to-one correspondence mode, each evaporator and the corresponding compensator form a radiating branch, and all the evaporators are combined with the compensators to form a plurality of parallel radiating branches.
Furthermore, the evaporator comprises an inner compensation cavity, a steam channel, a gas collecting groove and an evaporation cavity which are sequentially communicated, the inner compensation cavity is provided with a capillary core and is communicated with the steam channel through the capillary core, one side of a heat conducting sheet in the evaporator faces a heat source, and the other side of the heat conducting sheet is in contact with the steam channel, the gas collecting groove and the evaporation cavity.
Furthermore, one side of the evaporation cavity close to the heat source is provided with a plurality of protruding parts, and the protruding parts are connected with the heat conducting fins to form an auxiliary heat exchange structure.
Furthermore, the heat conducting fins are attached to the heat source, the inner compensation cavity is connected with the compensator, and the evaporation cavity is connected with the condenser through a pipeline.
Furthermore, an outer compensation cavity is arranged in the compensator, one end of the outer compensation cavity is connected with the condenser, and the other end of the outer compensation cavity is connected with the evaporator.
Further, the outer compensation cavity is provided with a capillary wick so that the condenser, the compensator and the evaporator form a one-way circulation.
Furthermore, the evaporator is connected with the condenser through a gas pipeline, the condenser is connected with the compensator through a liquid pipeline, and the loop heat pipe is filled with a medium and exchanges heat along the circulating phase change of the loop heat pipe.
Further, the condenser is arranged in the head band, and a pipeline connected with the condenser is arranged along the head band.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) aiming at the problems of unreasonable distribution and poor heat dissipation performance of a heat dissipation assembly of the existing wearable vision enhancement equipment, the evaporator and the heat source are adopted to exchange heat, the condenser is arranged at the headband position and isolated from the evaporator, the heat dissipation assembly is separately arranged at each part of the wearable equipment, the weight distribution is optimized, the wearing comfort level is improved, and the heat concentration can be reduced to improve the heat dissipation performance of the heat dissipation assembly.
(2) Aiming at the characteristics of narrow space and large heat flow density of wearable vision enhancement equipment, a condenser needing to emit heat and a heat source are arranged at a position away from each other, and a plurality of evaporators matched with the heat source in distribution are adopted for heat exchange, so that the simultaneous heat dissipation or the sequential heat dissipation of a plurality of heat sources in a coverage range is realized; meanwhile, all components of the loop heat pipe are communicated by adopting pipelines, and the whole layout meets the heat dissipation requirement of a narrow space.
(3) Be provided with steam channel, gas collecting channel and evaporation chamber in the evaporimeter and contact with the conducting strip jointly to the volume in evaporation chamber is greater than steam channel, gas collecting channel, and, the area of contact of evaporation chamber and conducting strip also is greater than steam channel and gas collecting channel, and the guarantee radiating process lasts stable operation, and the evaporation chamber can further improve heat exchange efficiency, avoids the higher equipment that leads to of heat source initial temperature to start with lower power, and has reduced the temperature fluctuation of heat source, improves equipment operating stability.
(4) The compensator is communicated with the evaporator and the inner compensation cavity of the evaporator, the volume required by the inner compensation cavity is small, the corresponding inner surface area is reduced, the heat conducted from the heated evaporator to the compensation cavity through the side wall is reduced, and the heat leakage of the side wall is reduced; the position of the external compensation cavity is slightly higher than that of the evaporator, so that liquid can be supplemented into the evaporator in time, the phenomenon of dry burning of the internal compensation cavity is avoided, and the stability of the system is ensured; and the medium filling rate of the loop heat pipe can be improved by the external compensation cavity under the high-load working condition, so that the quality of the medium stored in the loop heat pipe is increased, and the problem of insufficient liquid supply during long-distance heat transmission is solved.
(5) The capillary core provides the drive power of the loop heat pipe and is also used as a one-way valve for medium circulation, so that the medium flows along the compensator, the evaporator and the condenser in a circulating mode in sequence, heat in the glasses body is transferred to the head band to dissipate heat, heat concentration is reduced, heat dispersion is achieved, and the comfort of the part, in contact with the human body, of the glasses body is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of a loop heat pipe in embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the communication relationship between the evaporator and the compensator in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the distribution of heat source positions in the lens body in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a connection tape of the spectacle body in embodiment 1 of the present invention.
In the figure, 1: evaporator, 1-1: inner compensation cavity, 1-2: primary capillary core, 1-3: thermally conductive sheet, 1-4: steam channel, 1-5: gas collecting tank, 1-6: heat source, 2: evaporation chamber, 3: connecting hose, 4: compensator, 4-1: outer compensation chamber, 4-2: secondary capillary core, 5: liquid branch, 6: a joint, 7: liquid line, 8: condenser, 9: gas line, 10: gas branch, 11: first heat source, 12: spectacle body, 13: second heat source, 14: headband outer side, 15: inside the headband.
Detailed Description
Example 1
In an exemplary embodiment of the present invention, as shown in fig. 1-4, a wearable vision-enhancing device with a heat sink assembly is provided.
As shown in fig. 1 and 2, the wearable vision enhancement device with a heat dissipation assembly adopts a wearable structure, and includes a glasses body 12 and a head band, the head band is connected to the glasses body 12, and loop heat pipes are arranged on the glasses body 12 and the head band, so as to dissipate heat from heat sources 1-6 in the glasses body 12, and improve the heat dissipation performance of the whole device.
Because various chips are installed in the wearable vision enhancement device, a large amount of heat can be generated while the chips work to form a plurality of heat sources 1-6, and the problems that a heat dissipation system of the heat sources 1-6 is complex and uneven in distribution are solved.
Specifically, with reference to fig. 1 and 2, the loop heat pipe includes a compensator 4, an evaporator 1 and a condenser 8 which are sequentially communicated to form a closed loop, a medium is filled in the loop heat pipe, the medium exchanges heat with the outside and can generate phase change, and the evaporator 1 is arranged corresponding to heat sources 1 to 6 in the glasses body 12 and exchanges heat with the heat sources 1 to 6; the condenser 8 is mounted on the head band; capillary cores are arranged in the compensator 4 and the evaporator 1 to drive the loop heat pipe to circulate.
Meanwhile, a plurality of evaporators 1 are arranged in parallel and are communicated with the condenser 8, each evaporator 1 at least corresponds to one heat source 1-6 in the glasses body 12, and the evaporators 1 and the corresponding heat sources 1-6 form heat exchange; the evaporators 1 are communicated with the compensators 4 in a one-to-one correspondence manner, each evaporator 1 and the corresponding compensator 4 form a heat dissipation branch, and all the evaporators 1 are combined with the compensators 4 to form a plurality of parallel heat dissipation branches.
In addition, the evaporator 1 is positioned in the glasses body 12 at the front section of the wearable vision enhancement device and distributed in a crotch shape according to the distribution positions of the heat sources 1-6, and the condenser 8 is positioned at the headband position at the rear section of the wearable vision enhancement device.
The evaporator 1 comprises an inner compensation cavity 1-1, a steam channel 1-4, a gas collecting groove 1-5 and an evaporation cavity 2 which are sequentially communicated, a capillary core is arranged in the inner compensation cavity 1-1 and communicated with the steam channel 1-4 through the capillary core, one side of a heat conducting sheet 1-3 in the evaporator 1 faces a heat source 1-6, and the other side of the heat conducting sheet contacts the steam channel 1-4, the gas collecting groove 1-5 and the evaporation cavity 2.
It can be understood that, in this embodiment, in order to improve the operation stability, the evaporation chamber 2 and the evaporator 1 body are separately arranged, so that the evaporation channel and the gas collecting channel 1-5 can exchange heat with the heat source 1-6 through the heat conducting fins 1-3, the evaporation chamber 2 can also exchange heat with the heat source 1-6 through the heat conducting fins 1-3, and the two heat exchange processes can be performed simultaneously, thereby solving the problems of small heat exchange coefficient and low operation stability.
The evaporation cavity 2 is used as an external evaporation cavity 2 and is correspondingly connected with the gas collecting grooves 1-5 through the built-in gas pipeline 9, and steam generated at the bottom of the evaporator 1 enters the gas collecting grooves 1-5 and then enters an inlet of the external evaporation cavity 2 through the built-in gas pipeline 9; the outlet of the external evaporation cavity 2 is connected with the inlet of a condenser 8 through a gas pipeline 9.
It should be noted that the evaporation cavity 2 is a square column type cavity, a plurality of protrusions are arranged on one side of the evaporation cavity 2 close to the heat sources 1-6, and the protrusions are connected with the heat conducting fins 1-3 to form an auxiliary heat exchange structure. The bulge is a columnar microstructure which is arranged at the bottom of the evaporation cavity 2 and used for enhancing boiling heat transfer, and the number of vaporization cores is increased.
An external compensation cavity 4-1 is arranged in the compensator 4, one end of the external compensation cavity 4-1 is connected with the condenser 8, the other end of the external compensation cavity 4-1 is connected with the evaporator 1, and a capillary core is arranged in the external compensation cavity 4-1, so that the condenser 8, the compensator 4 and the evaporator 1 form one-way circulation.
In this embodiment, the loop heat pipe is a separate heat pipe, that is, the evaporation section and the condensation section of the heat pipe are respectively and independently the evaporator 1 and the condenser 8, and the middle of the heat pipe is connected through a pipeline, so that the structural design is more flexible, and the internal capillary core separates gas and liquid, and the heat transfer performance is superior; as shown in fig. 1, the capillary core arranged in the inner compensation cavity 1-1 is a primary capillary core 1-2, and the capillary core arranged in the outer compensation cavity 4-1 is a secondary capillary core 4-2. By additionally arranging the outer compensation cavity 4-1 with the secondary capillary core 4-2, the supply of a heat exchange medium can be ensured, and the requirements of long-distance heat transmission or heat dissipation of multiple heat sources 1-6 can be met.
The compensation cavities are correspondingly connected with the evaporators 1 one by one through connecting hoses 3 and are arranged at the inlets of the evaporators 1, and the connecting hoses 3 are communicated with the outer compensation cavities 4-1 and the inner compensation cavities 1-1 of the evaporators 1. The inner wall of the outer compensation cavity 4-1 and the inner wall of the connecting hose 3 are both provided with a secondary capillary core 4-2, and the inlet of the outer compensation cavity 4-1 is higher than the outlet. The inlet of the outer compensation chamber 4-1 is connected with the outlet of the condenser 8 through a liquid pipeline 7.
The compensator 4 is communicated with the evaporator 1, the compensator 4 is communicated with the inner compensation cavity 1-1 of the evaporator 1, the required size of the inner compensation cavity is small, the corresponding inner surface area is reduced, the heat conducted from the side wall to the compensation cavity after the evaporator 1 is heated is reduced, and the heat leakage of the side wall is reduced.
Meanwhile, the position of the outer compensation cavity 4-1 is slightly higher than that of the evaporator 1, so that liquid can be supplemented into the evaporator 1 in time, the dry burning phenomenon of the inner compensation cavity 1-1 is avoided, and the stability of the system is ensured; the medium filling rate of the loop heat pipe can be improved by the external compensation cavity 4-1 under the high-load working condition, so that the quality of the medium stored in the loop heat pipe is improved, and the problem of insufficient liquid supply during long-distance heat transmission is solved
In this embodiment, the capillary core adopts a double-layer stainless steel wire mesh structure, the upper layer is 300 meshes, and the lower layer is 500 meshes; in other embodiments, other forms of capillary wick can be selected to meet the circulation requirements.
The capillary core provides the driving force of the loop heat pipe and is also used as a one-way valve for medium circulation, so that the medium flows circularly along the compensator 4, the evaporator 1 and the condenser 8 in sequence, heat in the glasses body 12 is transferred to the head band to dissipate heat, heat concentration is reduced, heat dispersion is realized, and the comfort of the part of the glasses body 12 contacting a human body is improved.
As shown in fig. 1, the condenser 8 is disposed in the head band, and the pipeline connected to the condenser 8 is disposed along the head band, and the cooling manner of the condenser 8 may be a sleeve type liquid cooling or a fin type air cooling, etc.
As shown in fig. 3 and 4, taking the head-mounted AR glasses as an example for description, the main heat sources 1-6 of the head-mounted AR glasses include a CPU, an HPU, a peripheral chip, etc., which are located on the top of the AR glasses, such as the first heat source 111-6 and the second heat source 131-6 shown in fig. 3, the first heat source 111-6 is a 5G module assembly, the power is 14W, and the peak period is 30W; the second heat source 131-6 is another module component, such as a chip of an HPU module, a display optical module, etc., and has a total power of about 10W.
Arranging heat conducting fins 1-3 on heat sources 1-6, arranging a liquid pipeline 7 on one side of a glasses body 12, and arranging a gas pipeline 9 on the other side, wherein the liquid pipeline corresponds to the positions of the temples on the two sides of the AR glasses; the evaporator 1 is connected with a condenser 8 through a gas pipeline 9, the condenser 8 is connected with the compensator 4 through a liquid pipeline 7, and the loop heat pipe is filled with a medium and carries out circulating phase change heat exchange along the loop heat pipe.
Phase change cooling utilizes liquid latent heat to realize heat transfer, is an efficient heat dissipation technique, mainly has modes such as microchannel, microjet, little spraying, immersion formula liquid cooling, heat pipe at present, and phase change cooling utilizes the latent heat of liquid working medium phase transition in-process, can take away a large amount of heats, and the temperature of gas-liquid mixture can remain unchanged.
The compensator 4 and the evaporators 1 are combined, the evaporators 1 are correspondingly connected with the compensators 4, and the inlet of the inner compensation cavity 1-1 is connected with the outlet of the outer compensation cavity 4-1; the gas collecting groove 1-5 at the bottom of the evaporator 1 is connected with the inlet of the evaporation cavity 2. A plurality of evaporators 1 are connected in parallel, exhaust gas enters a condenser 8 and is condensed into liquid, and then the liquid enters an external compensation cavity 4-1.
The multiple evaporators 1 generate steam and then enter the multiple corresponding gas branches 10, the multiple gas branches 10 are finally converged to a gas pipeline 9 through a joint 6 and enter a condenser 8, liquid condensed by the condenser 8 enters a liquid pipeline 7 and is shunted to the multiple liquid branches 5 through another joint 6 before reaching the multiple compensators 4, and then the liquid enters the compensators 4 and the evaporators 1 to complete circulation.
Considering the requirement of the AR glasses for balance weight and wearing balance feeling, the heat sources 1-6 are distributed to the left end and the right end, and parallel heat dissipation is adopted in the embodiment. Each branch road enters the main pipeline after converging through the node, converges to gas line 9 through gas branch road 10, has guaranteed gas mixing's stability, disperses in each liquid branch road 5 through liquid line 7, is favorable to the even reposition of redundant personnel of liquid.
As shown in fig. 4, the glasses body 12 and the headband form an annular wearing structure, one side directly contacting with the skin of the human body is a skin-friendly surface, the corresponding inner side 15 of the headband and the inner side of the glasses body 12, and the corresponding side far away from the skin-friendly surface is an outer side 14 of the headband and an outer side of the glasses body 12.
Because the inside of wear-type AR glasses equipment directly contacts with positions such as human head, ear, when equipment operating power was too high, user's experience can be influenced to the produced high heat, probably leads to the scald when serious. Therefore, set up the heat insulating mattress at AR glasses cooling system inboard, prevent that the heat from to being close to human one end flow, close skin coats and is stamped the heat insulating mattress, avoids the heat to give off the in-process and human direct contact.
The heat insulation pad can be aerogel felt, such as silica fiber aerogel felt, with a porosity of 95% and a density of 3kg/m3The thermal conductivity is 0.012W/m.K; has the characteristics of high porosity, high specific surface area, low density, low thermal conductivity and the like, and improves the heat insulation effect.
Specifically, the heat conducting sheet 1-3 is a high heat conducting gasket made of magnesium-lithium alloy (density of 1.57 g/cm)3Thermal conductivity is 75W/m.K), heat can be rapidly transferred to the evaporator 1 assembly, and the ultra-light density meets the requirement of AR glasses on balance weights.
The medium filled in the loop heat pipe can be methanol, the capillary core adopts a double-layer stainless steel wire mesh structure, the upper layer is 300 meshes, and the lower layer is 500 meshes. A layer of coarse mesh partition plate is arranged on the capillary core and used for improving rigidity and supporting a wire mesh capillary core structure, the pores of the coarse mesh partition plate are larger than those of a stainless steel mesh structure of the capillary core, the work of the capillary core is not influenced, and the capillary core is fixed by the coarse mesh partition plate and the steam channels 1-4.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A wearable vision enhancement device with a heat dissipation assembly is characterized by comprising a glasses body, a head band and a loop heat pipe, wherein the loop heat pipe comprises a compensator, an evaporator and a condenser which are sequentially communicated to form a closed loop, the evaporator is arranged corresponding to a heat source in the glasses body and forms heat exchange with the heat source; the condenser is arranged on the head band; capillary cores are arranged in the compensator and the evaporator to drive the loop heat pipe to circulate.
2. The wearable vision enhancement device with a heat dissipation assembly of claim 1, wherein the plurality of evaporators are arranged in parallel and each communicate with a condenser, each evaporator corresponding to at least one heat source within the eyewear body, the evaporators in thermal communication with the corresponding heat source.
3. The wearable vision enhancement device with a heat dissipation assembly of claim 2, wherein the evaporators communicate with the compensators in a one-to-one correspondence, each evaporator and a corresponding compensator form a heat dissipation branch, and all evaporators in combination with the compensators form a plurality of parallel heat dissipation branches.
4. The wearable vision enhancement device with the heat dissipation assembly of claim 1, wherein the evaporator comprises an inner compensation chamber, a steam channel, an air collection groove and an evaporation chamber which are communicated in sequence, the inner compensation chamber is provided with a capillary wick and is communicated with the steam channel through the capillary wick, and the heat conducting sheet in the evaporator is arranged to face a heat source on one side and contact the steam channel, the air collection groove and the evaporation chamber on the other side.
5. The wearable vision enhancement device with a heat dissipation assembly of claim 4, wherein a side of the evaporation chamber adjacent to the heat source is provided with a plurality of protrusions, and the protrusions are connected with the heat conducting fins to form an auxiliary heat exchange structure.
6. The wearable vision enhancement device with the heat dissipation assembly of claim 4, wherein the heat conducting fins are attached to a heat source, the inner compensation cavity is connected with the compensator, and the evaporation cavity is connected with the condenser through a pipeline.
7. The wearable vision enhancement device with a heat dissipation assembly of claim 1, wherein an external compensation chamber is disposed within the compensator, one end of the external compensation chamber being connected to the condenser and the other end of the external compensation chamber being connected to the evaporator.
8. The wearable vision enhancement device with a heat dissipation assembly of claim 7, wherein the outer compensation chamber is fitted with a capillary wick to form a one-way circulation of the condenser, the compensator, and the evaporator.
9. The wearable vision enhancement device with a heat dissipation assembly of claim 1, wherein the evaporator is connected to a condenser via a gas line, the condenser is connected to the compensator via a liquid line, and the loop heat pipe is filled with a medium and exchanges heat with a phase along a loop heat pipe in a circulating manner.
10. The wearable vision enhancement device with a heat dissipation assembly of claim 1, wherein the condenser is disposed within a head band, and wherein tubing connecting the condenser is disposed along the head band.
CN202210147066.8A 2022-02-17 2022-02-17 Wearable visual enhancement equipment with radiating component Active CN114637113B (en)

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JP2012083082A (en) * 2010-10-14 2012-04-26 Fujitsu Ltd Loop-type heat pipe, and electronic apparatus equipped with the same
CN110621953A (en) * 2017-05-08 2019-12-27 开文热工科技公司 Thermal management plane
CN110779370A (en) * 2019-12-06 2020-02-11 昆山联德电子科技有限公司 Thin type temperature equalizing plate
CN213210605U (en) * 2020-11-12 2021-05-14 四川见山科技有限责任公司 Circulating heat dissipation VR glasses
CN216700746U (en) * 2021-11-05 2022-06-07 歌尔光学科技有限公司 Head-mounted display device and heat dissipation assembly thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012083082A (en) * 2010-10-14 2012-04-26 Fujitsu Ltd Loop-type heat pipe, and electronic apparatus equipped with the same
CN110621953A (en) * 2017-05-08 2019-12-27 开文热工科技公司 Thermal management plane
CN110779370A (en) * 2019-12-06 2020-02-11 昆山联德电子科技有限公司 Thin type temperature equalizing plate
CN213210605U (en) * 2020-11-12 2021-05-14 四川见山科技有限责任公司 Circulating heat dissipation VR glasses
CN216700746U (en) * 2021-11-05 2022-06-07 歌尔光学科技有限公司 Head-mounted display device and heat dissipation assembly thereof

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