US20070068653A1 - Liquid cooling apparatus - Google Patents

Liquid cooling apparatus Download PDF

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Publication number
US20070068653A1
US20070068653A1 US11/527,399 US52739906A US2007068653A1 US 20070068653 A1 US20070068653 A1 US 20070068653A1 US 52739906 A US52739906 A US 52739906A US 2007068653 A1 US2007068653 A1 US 2007068653A1
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United States
Prior art keywords
coolant
tank
liquid cooling
radiator
cooling apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/527,399
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English (en)
Inventor
Nobuyuki Kondou
Takashi Miwa
Takashi Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Assigned to SANYO ELECTRIC CO., LTD. reassignment SANYO ELECTRIC CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IKEDA, TAKASHI, KONDOU, NOBUYUKI, MIWA, TAKASHI
Publication of US20070068653A1 publication Critical patent/US20070068653A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3144—Cooling systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3164—Modulator illumination systems using multiple light sources
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F28D2021/0031—Radiators for recooling a coolant of cooling systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/20—Indexing scheme relating to G06F1/20
    • G06F2200/201—Cooling arrangements using cooling fluid

Definitions

  • the present invention relates to a liquid cooling apparatus configured to cool a heat unit generating heat, by coolant.
  • a projection-type image display apparatus provided with a light source such as a lamp emitting the high brightness light and a projection lens projecting the light emitted from the light source on a screen is generally known.
  • the projection type image display apparatus has a liquid cooling apparatus for cooling the light source by a coolant, for efficiently suppressing affection caused by heat that the light source generates.
  • the liquid cooling apparatus has a flow path where the coolant flows and a radiator cooling the coolant warmed.
  • the liquid cooling apparatus also has a reserve tank (hereinafter, upper reserve tank) for temporarily storing the coolant flowed into the radiator and a reserve tank (hereinafter lower reserve tank) for temporarily storing the coolant flowed out from the radiator.
  • a reserve tank hereinafter, upper reserve tank
  • a reserve tank hereinafter lower reserve tank
  • the liquid cooling apparatus will be described bellow with reference to FIG. 1 .
  • the liquid cooling apparatus has pipe 23 connecting an object to be cooled 25 such as light source and a radiator 200 .
  • the object to be cooled 25 is cooled by circulating coolant through the pipe 23 .
  • a pump 24 pump out the coolant into the pipe 23 , the coolant circulates between the object to be cooled 25 and the radiator 200 .
  • the radiator 200 has inner radiator pipes 202 where the coolant passes through, and a heat radiation fin 203 cooling the coolant.
  • the heat radiation fin 203 is cooled by the wind that blew to the heat radiation fin 203 from fan 206 .
  • the liquid cooling apparatus has an upper reserve tank 204 for temporarily storing the coolant flowed into the radiator and a lower reserve tank 205 for temporarily storing the coolant flowed out from the radiator.
  • the upper reserve tank 204 is arranged on upper side of the radiator 200 and the lower reserve tank 205 is arranged on lower side of the radiator 200 , assuming a vertical direction as an up-down direction when the projection-type image display apparatus disposed statically. Accordingly, a load of the pump 24 pumping out the coolant into the pipe 23 will be decreased.
  • sizes of the upper reserve tank 204 and the lower reserve tank 205 in a left-right direction are generally larger than the sizes of the upper reserve tank 204 and the lower reserve tank 205 in the up-down direction (vertical direction).
  • a coolant tank 201 storing the coolant is provided on upper side of the upper reserve tank 204 , the coolant infused from an infusion opening.
  • a layer of air is provided in upper portion of the coolant tank 201 to improve circulation characteristics of the coolant (for example, Unexamined Japanese Application No. 2002-357803).
  • projection-type image display apparatus projection-type image display apparatuses of hanging from ceiling type and of mobile type exist.
  • the projection-type image display apparatuses of hanging from ceiling type and of mobile type since directions of the projection-type image display apparatuses are changeable, air may go into the pipe 23 or the like. As the air goes into the pipe 23 , a flow amount of the coolant will be decreased. Accordingly, efficiency for cooling the object to be cooled 25 is deteriorated.
  • the air will easily go into the pipe 23 when the direction of the projection-type image display apparatus (that is, the liquid cooling apparatus) varies.
  • An aspect of a liquid cooling apparatus provided on an apparatus having a heat unit generating heat, and configured to cool the heat unit by coolant includes; a coolant tank configured to store the coolant; a radiator configured to cool the coolant; and a coolant pipe which is a flow path of the coolant and connecting the coolant tank and the radiator.
  • the coolant tank is arranged adjacent to the radiator in a horizontal direction when the apparatus disposed statically.
  • a size of the coolant tank in a vertical direction is larger than a size of the coolant tank in a horizontal direction when the apparatus is disposed statically.
  • Disposing the apparatus statically is to dispose the apparatus on the horizontal surface without leaning the apparatus.
  • the air merely goes into the coolant pipe, if the direction of the liquid cooling apparatus varies.
  • the volume of the coolant tank can be sufficiently kept.
  • the coolant pipe connects to a center portion of the coolant tank in a vertical direction when the apparatus is disposed statically.
  • the coolant pipe since the coolant pipe connects to a center portion of the coolant tank in a vertical direction, the air merely goes into the coolant pipe, if the liquid cooling apparatus is disposed upside down.
  • the coolant tank has a shape expanding from the center portion to upper side and expanding from the center portion to lower side, assuming a vertical direction as up-down direction when the apparatus is disposed statically.
  • the coolant tank has the shape expanding from the center portion to upper side and expanding from the center portion to lower side, the air merely goes into the coolant pipe, not only if the liquid cooling apparatus is disposed upside down but if the direction of the liquid cooling apparatus changes to various directions.
  • An aspect of the liquid cooling apparatus further includes infusion openings for infusing the coolant into the coolant tank.
  • the infusion openings are arranged on upper portion and lower portion of the coolant tank, assuming a vertical direction as up-down direction when the apparatus is disposed statically.
  • the infusion openings are arranged on upper portion and lower portion of the coolant tank, one of the infusion openings faces toward upper side, if the liquid cooling apparatus is disposed upside down. Accordingly, the coolant is easily infused into the coolant tank.
  • the coolant tank includes a pair of cooling tanks, and the pair of cooling tanks are arranged on the both side of the radiator.
  • the pair of cooling tanks are arranged on the both side of the radiator, the air merely goes into the radiator.
  • An aspect of a liquid cooling apparatus provided on an apparatus having a heat unit generating heat, and configured to cool the heat unit by coolant includes; a pair of coolant tanks configured to store the coolant; a radiator configured to cool the coolant; and a coolant pipe which is a flow path of the coolant and connecting the coolant tank and the radiator.
  • the pair of coolant tanks includes an upper tank arranged on upper side of the radiator and a lower tank arranged on lower side of the radiator, assuming a vertical direction as up-down direction when the apparatus is disposed statically.
  • One part on an upper surface of the upper tank expands upper than other part on the upper surface of the upper tank, and one part on a lower surface of the lower tank expands lower than other part on the lower surface of the lower tank.
  • a shape of the upper tank is identical with a shape of the lower tank
  • the air gathers around the one part on the upper surface of the upper tank which expands upper than the other part on the upper surface of the upper tank. Therefore, the air merely goes into the coolant pipe, if the direction of the liquid cooling apparatus varies.
  • the air merely goes into the coolant pipe, if the liquid cooling apparatus is disposed upside down.
  • one part on a lower surface of the upper tank expands lower than other part on the lower surface of the upper tank, and one part on an upper surface of the lower tank expands upper than other part on the upper surface of the lower tank.
  • the air gathers around the one part on the upper surface of the lower tank which expands upper than the other part on the upper surface of the lower tank. Therefore, the air merely goes into the coolant pipe, if the direction of the liquid cooling apparatus varies.
  • the air merely goes into the coolant pipe, if the liquid cooling apparatus is disposed upside down.
  • the coolant pipe respectively connects to center portions of the upper tank and the lower tank in a vertical direction when the apparatus is disposed statically.
  • the upper tank and the lower tank respectively have shape expanding from the center portion to upper side and expanding from the center portion to lower side, assuming a vertical direction as up-down direction when the apparatus is disposed statically.
  • the air merely goes into the coolant pipe, not only if the liquid cooling apparatus is disposed upside down but if the direction of the liquid cooling apparatus changes to various directions.
  • FIG. 1 is an explanatory diagram showing a liquid cooling apparatus related to the present invention.
  • FIGS. 2A and 2B are explanatory diagrams showing a liquid cooling apparatus of an embodiment of the present invention.
  • FIG. 2A shows the normal arrangement
  • FIG. 2B shows the upside down arrangement.
  • FIGS. 3A and 3B are explanatory diagrams showing another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 3A shows the normal arrangement
  • FIG. 3B shows the upside down arrangement.
  • FIGS. 4A and 4B are explanatory diagrams showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 4A shows the normal arrangement
  • FIG. 4B shows the upside down arrangement.
  • FIGS. 5A and 5B are explanatory diagrams showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 5A shows the normal arrangement
  • FIG. 5B shows the upside down arrangement.
  • FIG. 6 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 7 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 8 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 9 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 10 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIGS. 11A to 11 D are perspective views respectively showing examples of the shapes of a coolant tank 22 F.
  • FIG. 12A is an explanatory diagram showing a 45° oblique arrangement of the liquid cooling apparatus shown in FIG. 10
  • FIG. 12B is an explanatory diagram showing a 90° oblique arrangement of the liquid cooling apparatus shown in FIG. 10 .
  • FIGS. 13A to 13 C are cross sectional views respectively showing examples of the sectional shapes of the coolant tank 22 F.
  • FIG. 14 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 15 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 16 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 17 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 18 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • FIG. 19A is a perspective view showing an example of the shape of a coolant tank 22 J
  • FIG. 19B is a perspective view showing an example of the shape of a coolant tank 22 K.
  • FIG. 20 is an explanatory diagram showing an example in which the liquid cooling apparatus of the present invention is applied to a projection-type image display apparatus.
  • FIG. 21 is an explanatory diagram showing an example in which the liquid cooling apparatus of the present invention is applied to a projection-type image display apparatus.
  • FIG. 22 is a reference diagram showing a case where an air cooling apparatus is applied to the projection-type image display apparatus.
  • FIG. 23 is an explanatory diagram showing an example in which the liquid cooling apparatus of the present invention is applied to a projection type image display apparatus.
  • FIG. 24 is an explanatory diagram showing an example in which the liquid cooling apparatus of the present invention is applied to a projection type image display apparatus.
  • FIG. 25 is an explanatory diagram showing an example of an attachment structure of a projection type image display apparatus.
  • FIGS. 2 to 25 a liquid cooling apparatus of an embodiment of the present invention will be described based on FIGS. 2 to 25 .
  • the same reference numerals are respectively given to the same constituents as the constituents of the liquid cooling apparatus of the conventional example shown in FIG. 1 , and the description thereof is be omitted in some cases.
  • a vertical direction when the apparatus provided with the liquid cooling apparatus is disposed statically will be described as an up-down direction, and a horizontal direction when the apparatus provided with the liquid cooling apparatus is disposed statically will be described as a left-right direction. “Disposing the liquid cooling apparatus” is to dispose the liquid cooling apparatus on the horizontal surface without leaning the liquid cooling apparatus.
  • FIGS. 2A and 2B are explanatory diagrams showing an example of a liquid cooling apparatus of an embodiment of the present invention.
  • This liquid cooling apparatus is configured to circulate the coolant between the liquid cooling jacket unit 25 and a radiator 21 A.
  • the radiator 21 A includes an inner radiator pipe 21 a , and a radiation fin 21 b with a zigzag shape around this inner radiator pipe 21 a .
  • coolant tanks 22 A each with a shape such as a vertically long square cylinder or a vertically long circular cylinder are arranged.
  • Each of the coolant tanks 22 A has substantially the same length (height) as the length of the side faces of the radiator 21 A.
  • Connection openings (ports) 22 a to be connected to the inner radiator pipe 21 a are respectively formed at substantially central positions in the longitudinal direction of the respective coolant tanks 22 A.
  • a size of the coolant tank 22 A in the up-down direction is larger than a size of the coolant tank 22 A in the left-right direction.
  • connection openings (ports) to be connected to a coolant circulation pipe 23 (a coolant pipe) are also respectively formed at the substantially central positions in the longitudinal direction of the respective coolant tanks 22 A. That is, portions to serve as air pockets in the respective coolant tanks 22 A exist above the respective connection openings (ports).
  • An infusion opening, where the coolant infused, is provided at each of the upper and lower ends of each of the coolant tanks 22 A.
  • the coolant circulation pipe 23 is provided with a pump 24 , and by means of this pump 24 the coolant is circulated inside the coolant circulation pipe 23 and the inner radiator pipe 21 a .
  • the coolant cooled by the radiator 21 A is led to a liquid cooling jacket unit 25 .
  • An object to be cooled (a heat unit generating heat) is arranged on top of this liquid cooling jacket unit 25 .
  • the coolant whose temperature increased by absorbing the heat from the object to be cooled is led to the radiator 21 A through the coolant circulation pipe 23 .
  • the heat transmitted to the radiation fin 21 b of the radiator 21 A is taken away by air blown from a fan (not shown).
  • the portions to serve as the air pockets in the respective coolant tanks 22 A will always exist above the respective connection openings (ports), either in the regular arrangement of the radiator 21 A shown in FIG. 2A or in the upside down arrangement of the radiator 21 A shown in FIG. 2B . Accordingly, it is possible to use the liquid cooling apparatus in the upside down arrangement as well. Moreover, as for the whole system of the liquid cooling apparatus (a set including the radiator, the pump and the like), modification such as reversing the rotation of the pump and the like will not be needed even if the liquid cooling apparatus is arranged upside down.
  • each of the coolant tanks 22 A is not limited to have substantially the same length (height) as the length of the side faces of the radiator 21 A, and may have a shorter length (height).
  • the connection openings may be positioned slightly off the respective central positions described above.
  • the coolant tank may be incorporated with the radiator or may be attached to the radiator separately.
  • the fan may also be incorporated with the radiator or may be attached to the radiator separately. Also in the configuration examples shown below, the situation is the same.
  • FIGS. 3A and 3B are explanatory diagrams showing another example of the liquid cooling apparatus of the embodiment of the present invention.
  • This liquid cooling apparatus differs from the liquid cooling apparatus shown in FIG. 2 in that it is provided with a radiator 21 B.
  • This liquid cooling apparatus has the configuration in common with the liquid cooling apparatus shown in FIG. 2 in every other respect.
  • the radiator 21 B includes a plurality of radiator pipes 21 c arranged in parallel between the upper port portion and the lower port portion, and the radiation fin 21 b around the radiator pipes 21 c .
  • the inner radiator pipe 21 a extended from the left end face of the upper port portion of the radiator 21 B is connected to the connection opening (port) 22 a positioned at the substantially central position in the longitudinal direction of the left coolant tank 22 A
  • the inner radiator pipe 21 a extended from the right end face of the lower port portion of the radiator 21 B is connected to the connection opening (port) 22 a positioned at the substantially central position in the longitudinal direction of the right coolant tank 22 A.
  • FIGS. 4A and 4B are explanatory diagrams showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 2 is that the inner radiator pipe 21 a is directly connected to the coolant circulation pipe 23 without having one of the two coolant tanks 22 A provided.
  • the portion to serve as the air pocket in the single coolant tank 22 A will always exist above the connection opening (port), either in the regular arrangement of the radiator 21 A shown in FIG. 4A or in the upside down arrangement of the radiator 21 A shown in FIG. 4B . Accordingly, it is possible to use the liquid cooling apparatus in the upside down arrangement as well.
  • the inner radiator pipe 21 a to be directly connected to the coolant circulation pipe 23 may be formed straight and connected thereto.
  • FIGS. 5A and 5B are explanatory diagrams showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 3 is that one of the two coolant tanks 22 A is not provided.
  • the inner radiator pipe 21 a extended from the left end face of the upper port portion of the radiator 21 B is directly connected to the coolant circulation pipe 23 .
  • the portion to serve as the air pocket in the coolant tank 22 B will always exist above the connection opening (port), either in the regular arrangement of the radiator 21 B shown in FIG. 5A or in the upside down arrangement of the radiator 21 B shown in FIG. 5B . Accordingly, it is possible to use the liquid cooling apparatus in the upside down arrangement as well.
  • the inner radiator pipe 21 a to be directly connected to the coolant circulation pipe 23 may be formed straight and connected thereto.
  • FIG. 6 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 2 is that two coolant tanks 22 B are respectively provided in place of the two coolant tanks 22 A.
  • One coolant tank 22 B is arranged in the shape of a hook extending from the left side to the upper side of the radiator 21 A.
  • Another coolant tank 22 is arranged in the shape of a hook extending from the right side to the lower side of the radiator 21 A.
  • the side portions as well as the upper and lower side portions of the respective coolant tanks 22 B have substantially the same length (height) as the length of the side faces of the radiator 21 A.
  • connection openings (ports) 22 a to be connected to the inner radiator pipe 21 a are respectively formed at the substantially central positions in the longitudinal direction of the respective side portions.
  • connection openings (ports) to be connected to the coolant circulation pipe 23 are also respectively formed at the substantially central positions in the longitudinal direction of the respective side portions.
  • each of the coolant tanks 22 B has oblique faces substantially perpendicular to an oblique 45° line therebetween, and has infusion openings respectively in these oblique face portions.
  • this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 B.
  • the infusion openings may be respectively provided at places in the vertical faces or horizontal faces without forming the oblique faces.
  • the lengths of the side portions as well as the upper and lower side portions of the respective coolant tanks 22 B may be shorter than the length of each side of the radiator 21 A.
  • FIG. 7 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 2 is that two coolant tanks 22 C are provided diagonally opposite to one another.
  • Each of the coolant tanks 22 C has a square cylindrical shape or a circular cylindrical shape.
  • Each of the coolant tanks 22 C has the length (height) shorter than the length of the side faces of the radiator 21 A.
  • the connection openings (ports) 22 a to be connected to the inner radiator pipe 21 a are respectively formed at substantially central positions in the longitudinal direction of the respective coolant tanks 22 C.
  • the connection openings (ports) to be connected to the coolant circulation pipe 23 are also respectively formed at the substantially central positions in the longitudinal direction of respective the coolant tanks 22 C. That is, the portions to serve as the air pockets in the respective coolant tanks 22 C always exist above the respective connection openings (ports).
  • this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 C.
  • FIG. 8 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 2 is that coolant tanks 22 D are respectively provided in the upper and lower sides of the radiator 21 A.
  • Each of the coolant tanks 22 D has substantially the same length (width) as the length of the upper and lower sides of the radiator 21 A, and is arranged obliquely upward to the right.
  • the highest part of the coolant tank 22 D is formed, and this part serves as the air pocket in the regular arrangement.
  • the lowest part of the coolant tank 22 D is formed and this part serves as the air pocket in the upside down arrangement.
  • connection openings (ports) connected to the coolant circulation pipe 23 are respectively formed at the substantially central positions in the longitudinal direction of the respective coolant tanks 22 D.
  • the connection opening (port) 22 a to be connected to the inner radiator pipe 21 a is formed in the rightmost lower face, whereas in the lower coolant tank 22 D it is formed in the leftmost upper face. That is, the portions to serve as the air pockets in the respective coolant tanks 22 D always exist above the respective connection openings (ports). It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 D.
  • FIG. 9 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 8 is that coolant tanks 22 E are respectively provided in the upper and lower sides of the radiator 21 A.
  • Each of the coolant tanks 22 E has a substantially square cylindrical shape or a substantially circular cylindrical shape or the like, the center of which protrudes upward and downward. That is, the highest part and the lowest part of each of the coolant tanks 22 E are formed at the central position of the coolant tank 22 E.
  • the highest portions respectively serve as the air pockets in the regular arrangement, whereas the lowest portions respectively serve as the air pockets in the upside down arrangement.
  • connection openings (ports) to be connected to the coolant circulation pipe 23 are respectively formed at the substantially central positions in the respective side faces of the respective coolant tanks 22 E.
  • connection openings (ports) 22 a to be connected to the inner radiator pipe 21 a are also formed at the substantially central positions in the respective side faces of the respective coolant tanks 22 E. That is, the portions to serve as the air pockets in the respective coolant tanks 22 E always exist above the respective connection openings (ports). It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 E.
  • FIG. 10 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 2 is that in place of the coolant tanks 22 A each having a straight shape, coolant tanks 22 F each having a shape whose central portion (the portion at which the connection openings are formed) is narrowed are provided.
  • the portions to serve as the air pockets and the portions to possibly serve the air pockets in the respective coolant tanks 22 F extend to the right and left from the corresponding connection openings, i.e., connection opening 22 a between the inner radiator pipe 21 a and the coolant tank 22 F; and the connection opening between the coolant circulation pipe 23 and the coolant tank 22 F.
  • Each of the coolant tanks 22 F has one of shapes shown in FIGS. 11A to 11 D, for example.
  • the coolant tank 22 F shown in FIG. 11A has a shape formed by narrowing a center part of a flat square cylinder from two directions (two faces which are not narrowed are in parallel to each other).
  • the coolant tank 22 F shown in FIG. 11B has a shape formed by narrowing a center part of a square cylinder from four directions.
  • the coolant tank 22 F shown in FIG. 11C has a flat cylindrical shape (disk shape) around the connection openings, and the connection openings exist inside the edge positions of the circumferential faces of the flat cylindrical shape.
  • the coolant tank 22 F shown in FIG. 11D has a shape formed by narrowing a central position of a vertically long circular cylindrical shape, and the connection openings are formed at this central position (narrowed position).
  • FIGS. 12A and 12B show the states where the liquid cooling apparatus shown in FIG. 10 is leaned.
  • the portions to serve as the air pockets and the portions to possibly serve as the air pockets in the respective coolant tanks 22 F extend to the right and left from the corresponding connection openings, i.e., the connection opening 22 a between the inner radiator pipe 21 a and the coolant tank 22 F; and the connection opening between the coolant circulation pipe 23 and the coolant tank 22 F.
  • the radiator 21 A is arranged not only at ⁇ 90 degrees but also obliquely at other angles, either or both of the portions to serve as the air pockets and the portions to possibly serve as the air pockets exist above the connection opening. Accordingly, air will gather in the air pockets in whatever way the liquid cooling apparatus is leaned, and thus air can be almost securely prevented from going into the piping from the connection openings.
  • the shape of the coolant tank 22 F is not limited to the shapes shown in FIG. 11 and may have a sectional shape shown in FIG. 13A , a sectional shape shown in FIG. 13B , or a sectional shape shown in FIG. 13C , for example. That is, it suffices that the portion to serve as the air pocket and the portion to possibly serve as the air pocket in the coolant tank 22 F extend to the right and left from the connection openings. It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 F.
  • FIG. 14 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 6 is that coolant tanks 22 G are provided in place of the coolant tanks 22 B. While each of the coolant tanks 22 G has a hook shape as in the case of the coolant tank 22 B, the portion to serve as the air pocket in the side portion of one of the coolant tanks 22 G and the portion to possibly serve as the air pocket in the side portion of another of the coolant tanks 22 G extend to the right and left from the connection openings as in the case of the coolant tank 22 F described above. It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 G.
  • FIG. 15 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 7 is that coolant tanks 22 H are provided in place of the coolant tanks 22 B. While the two coolant tanks 22 H are arranged diagonally opposite to one another as in the case of the coolant tanks 22 C, the portions to serve as the air pockets and the portions to possibly serve as the air pockets of the respective coolant tanks 22 H extend to the right and left from the connection openings as in the case of the coolant tanks 22 F described above. It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 H.
  • FIG. 16 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 8 is that coolant tanks 22 I are provided in place of the coolant tanks 22 D. While the two coolant tanks 22 I are respectively arranged in the upper and lower sides of the radiator 21 A as in the case of the coolant tanks 22 D, the portions to serve as the air pockets and the portions to possibly serve as the air pockets of the respective coolant tanks 22 I extend to the right and left from the connection openings as in the case of the coolant tanks 22 F described above. It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 I.
  • FIG. 17 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 9 is that coolant tanks 22 J are provided in place of the coolant tanks 22 E. While the two coolant tanks 22 J are respectively arranged in the upper and lower sides of the radiator 21 A as in the case of the coolant tanks 22 E, the portion to serve as the air pocket and the portion to possibly serve as the air pocket of the coolant tanks 22 J extend to the right and left from the connection openings as in the case of the coolant tank 22 F described above.
  • each of the coolant tanks 22 J has a substantially beer barrel shape (circular sectional shape) as shown in FIG. 19A , it may have a square sectional shape or the like. It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 J.
  • FIG. 18 is an explanatory diagram showing still another example of the liquid cooling apparatus of the embodiment of the present invention.
  • the difference from the liquid cooling apparatus shown in FIG. 9 is that coolant tanks 22 K are provided in place of the coolant tanks 22 E. While the two coolant tanks 22 K are respectively arranged in the upper and lower sides of the radiator 21 A as in the case of the coolant tanks 22 E, the portion to serve as the air pocket and portion to possibly serve as the air pocket of the coolant tanks 22 K extend to the right and left from the connection openings as in the case of the coolant tanks 22 F described above.
  • each of the coolant tanks 22 K has a substantially circular cylindrical shape (circular section) as shown in FIG. 19B , it may have a square cylindrical shape or the like. It should be noted that this configuration may include the radiator 21 B or may not include one of the coolant tanks 22 K.
  • each of the coolant tanks includes two infusion openings respectively used for the regular arrangement and for the upside down arrangement, however, it also serves a purpose that the coolant tank is configured to include only one infusion opening, or that the coolant tank itself is configured not to include a infusion opening.
  • the coolant tank may be positioned not only in the surroundings of the radiator 21 , but also, away from the surroundings, in front of or behind the radiator 21 (positions should keep out of the way of a fan or air blown by the fan).
  • FIG. 20 is an explanatory diagram showing a configuration example in which the liquid cooling apparatus is applied to a projection-type image display apparatus of a three-plate type.
  • This projection-type image display apparatus includes three illuminators 51 R, 51 G and 51 B.
  • Each of the illuminators 51 includes an LED (light emitting diode) 11 , a tapered rod integrator 12 , a polarization converter 13 , and a rod integrator 15 substantially shaped like a rectangular parallelepiped.
  • the LEDs 11 are respectively arranged on top of the liquid cooling jackets 25 .
  • the coolant circulation pipe 23 is connected to the liquid cooling jackets 25 in series.
  • the coolant coming out of the radiator 21 A is circulated in the following sequence: the liquid cooling jacket 25 used for the red LED 11 , the liquid cooling jacket 25 used for the blue LED 11 , and the liquid cooling jacket 25 used for the green LED 11 .
  • image lights of the respective colors are generated.
  • the image lights of the respective colors are combined by means of a cross dichroic prism 2 to provide a color image light. This color image light is projected by means of a projection lens 3 .
  • the coolant circulation pipe 23 is linked to the three liquid cooling jackets 25 in series, the three liquid cooling jackets 25 may be connected in parallel.
  • the lowest temperature coolant coming out of the radiator 21 A is led to the liquid cooling jacket 25 used for the red LED 11 , but is not limited thereto.
  • the lowest temperature coolant may be supplied to an LED (Light emitting diode) or an LD (laser diode) whose emission characteristic is likely to change with temperature fluctuation.
  • the liquid cooling apparatus of the present invention is also applicable to a projection-type image display apparatus of a single plate type.
  • the liquid cooling apparatus of the present invention is also applicable to a projection-type image display apparatus whose light source is a lamp. Not only the radiator 21 A but also other type of radiator or the like may be used.
  • FIG. 21 is an explanatory diagram showing an example of the arrangement relationship among the optical elements and the constituents of the liquid cooling apparatus in a configuration in which the liquid cooling apparatus is applied to a projection-type image display apparatus, and this view corresponds to the configuration shown in FIG. 20 .
  • FIG. 22 shows a configuration example for reference in a case where an air cooling is carried out to the projection-type image display apparatus shown in FIG. 20 .
  • an air cooling apparatus requires three sets of apparatuses (three fans are needed), it is possible to configure a single set of apparatus in the case of the liquid cooling apparatus.
  • the coolant circulation pipe is arranged so as to step over the projection lens.
  • the coolant circulation pipe is connects each LEDs in series without stepping over the projection lens.
  • FIG. 23 shows the projection-type image display apparatus 100 according to the sixteenth embodiment.
  • the projection-type image display apparatus 100 includes a plurality of light sources (a red light source 125 R, a green light source 125 G, and a blue light source 125 B), a plurality of tapered rod integrators (a tapered rod integrator 112 R, a tapered rod integrator 112 G, and a tapered rod integrator 112 B), a plurality of liquid crystal panel (a liquid crystal panel 101 R, a liquid crystal panel 101 G, and a liquid crystal panel 101 B), a dichroic prism 102 , and a projection lens 103 .
  • a red light source 125 R a green light source 125 G, and a blue light source 125 B
  • tapered rod integrators a tapered rod integrator 112 R, a tapered rod integrator 112 G, and a tapered rod integrator 112 B
  • liquid crystal panel a liquid crystal panel 101 R, a liquid crystal panel 101 G, and a liquid crystal panel 101 B
  • a dichroic prism 102 a projection
  • the red light source 125 R is such as an LED emitting the red light.
  • the green light source 125 G is such as an LED emitting the green light and the blue light source 125 B is such as an LED emitting the blue light.
  • the red light source 125 R, the green light source 125 G, and the blue light source 125 B are heat units generating heat (objects to be cooled).
  • the tapered rod integrator 112 R unifies the red light emitted from the red light source 125 R.
  • the tapered rod integrator 112 G unifies the green light emitted from the green light source 125 G
  • the tapered rod integrator 112 B unifies the blue light emitted from the blue light source 125 B.
  • the liquid crystal panel 101 R modulates the red light unified by the tapered rod integrator 112 R.
  • the liquid crystal panel 101 G modulates the green light unified by the tapered rod integrator 112 G and the liquid crystal panel 101 B modulates the blue light unified by the tapered rod integrator 112 B.
  • the dichroic prism 102 combines the red light went out from the liquid crystal panel 101 R, the green light went out from the liquid crystal panel 101 G, and the blue light went out from the liquid crystal panel 101 B.
  • the dichroic prism 102 guides the combined light toward the projection lens 103 .
  • the projection lens 103 projects the combined light combined by the dichroic prism 102 on a screen or the like.
  • the projection-type image display apparatus has one of the liquid cooling apparatuses described in the first to fourteenth embodiments.
  • the liquid cooling apparatus has the radiator 121 , the coolant tank 122 , the coolant circulation pipe 123 , and a pump 124 .
  • the radiator 121 cools the coolant warmed by the heat unit such as the red light source 125 R, the green light source 125 G, or the blue light source 125 B, by means of the heat radiation fins.
  • a fan 126 facing outside of the projection-type image display apparatus 100 cools the heat radiation fins provided on the radiator 121 .
  • the fan 126 cools not only the heat radiation fins but also inner of the projection-type image display apparatus 100 entirely.
  • the coolant tank 122 stores the coolant. As described in the first to fourteenth embodiment, various arrangements and shapes can be adopted as the arrangement and the shape of the coolant tank 122 ,
  • the coolant circulation pipe 123 is a flow path of coolant provided around the heat unit such as the red light source 125 R, the green light source 125 G, and the blue light source 125 B.
  • the coolant circulation pipe 123 connects to the radiator 121 , the pair of coolant tanks 122 , and pump 124 .
  • the coolant circulation pipe 123 connects jacket unit (not shown) where the red light source 125 R, the green light source 125 G, and the blue light source 125 B are arranged.
  • the pump 124 pumps out the coolant into the coolant circulation pipe 123 .
  • the coolant circulation pipe 123 is preferably arranged so that the coolant cooled by the radiator 131 cools the light source having the high energy in sequence, when the light sources are cooled in series.
  • the fan 126 preferably arranged around the radiator 121 .
  • the projection-type image display apparatus has the plurality of the light sources.
  • the projection-type image display unit has single white lamp for the replacement of the plurality of the light sources.
  • FIG. 24 shows the projection-type image display apparatus 100 according to the sixteenth embodiment. Note that, compositions similar to the above described sixteenth embodiment ( FIG. 23 ) are designated by the similar reference numerals.
  • the projection-type image display unit includes a white light source 125 W for the replacement of the red light source 125 R, the green light source 125 G and the blue light source 125 B.
  • the white light source 125 W is such as an UHP lamp emitting the white light.
  • the white light source is a heat unit generating heat (an object to be cooled).
  • the projection-type image display unit includes a unifying means 140 for the replacement of the tapered rod integrator 112 R, the tapered rod integrator 112 G, and the tapered rod integrator 112 B.
  • the unifying means 140 is configured of fly-eye lens, condenser lens, or the like, and unifies the white light emitted from the white light source 125 W.
  • the unifying means may be includes a PBS (Polarized Beam Splitter) integrates a polarization direction of the white light emitted from the white light source 125 W.
  • PBS Polarized Beam Splitter
  • the projection-type image display unit includes a separating means (a mirror 131 through a mirror 135 ).
  • the mirror 131 through the mirror 135 may be dichroic mirrors configured to reflect light having specific wavelength, and may be polarized mirrors configured to reflect light having specific polarization direction.
  • FIG. 25 shows the attachment structure of the projection-type image display apparatus 100 according to the eighteenth embodiment of the present invention. Note that, compositions similar to the above described sixteenth embodiment ( FIG. 23 ) are designated by the similar reference numerals.
  • the projection-type image display apparatus 100 is provided with a hanging furniture 320 .
  • the hanging furniture 320 is attached to an arm unit 330 fixed to the ceiling or the like.
  • the air since the size of the coolant tank 122 in the up-down direction is larger than the size of the cooling tank 122 in the horizontal direction, the air merely goes into the coolant circulation pipe 123 , assuming the vertical direction as the up-down direction when the projection-type image display apparatus 100 disposed statically.
  • the decrease in cooling efficiency by the coolant can be suppressed, and the volume of the coolant tank 122 can be kept sufficiently.
  • the liquid cooling apparatus of the present application is not limited to applications to the projection-type image display apparatus, but can be applied to other apparatuses such as a personal computer including heat generating members (LED, CPU and the like).
  • the liquid cooling apparatus of the present application can be used suitably in devices such as: a device which is turned upside down even temporarily at the time of assembly; a device which may be loaded upside down at the time of transportation; a device which may be used upside down in some cases (for example, an image display device of a ceiling suspension type and the like); and an on-vehicle device (the apparatus will also be leaned due to the inclination of the vehicle).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Projection Apparatus (AREA)
  • Liquid Crystal (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
US11/527,399 2005-09-28 2006-09-27 Liquid cooling apparatus Abandoned US20070068653A1 (en)

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US20070273220A1 (en) * 2006-05-12 2007-11-29 Taihei Koyama Apparatus for controller-integrated motor
US20100245778A1 (en) * 2009-03-25 2010-09-30 Seiko Epson Corporation Projector
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US20100253923A1 (en) * 2009-04-03 2010-10-07 Seiko Epson Corporation Heat exchanger and projector
US20110155353A1 (en) * 2009-12-30 2011-06-30 Man Zai Industrial Co., Ltd. Liquid cooling device
US20110186270A1 (en) * 2010-02-01 2011-08-04 Suna Display Co. Heat transfer device with anisotropic heat dissipating and absorption structures
US20130070453A1 (en) * 2010-05-31 2013-03-21 NEC DIsplaay Solutions, Ltd. Display device
US20130342765A1 (en) * 2012-06-25 2013-12-26 Sony Corporation Video display device and cooling system
US20160088768A1 (en) * 2014-09-24 2016-03-24 Delta Electronics, Inc. Rotatable-type liquid-cooled heat sink and disposition method for the same
US20160124292A1 (en) * 2013-09-03 2016-05-05 Sony Corporation Light source device and image display device
US20160234968A1 (en) * 2015-02-10 2016-08-11 Dynatron Corporation Liquid-Cooled Heat Sink for Electronic Devices
US20170055370A1 (en) * 2015-08-20 2017-02-23 Cooler Master Co., Ltd. Liquid-cooling heat dissipation device
US20170151511A1 (en) * 2015-11-27 2017-06-01 Delta Electronics, Inc. Liquid cooling device and air collector thereof
CN108108002A (zh) * 2017-12-22 2018-06-01 联想(北京)有限公司 散热器和电子设备
CN108153389A (zh) * 2017-12-25 2018-06-12 郑州秉茂达电子科技有限公司 一主机带双显示器的办公用计算机
CN110618543A (zh) * 2019-09-09 2019-12-27 靖江荣平警用装备制造有限公司 一种ai系统人工智能眼镜
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US20070139887A1 (en) * 2005-12-21 2007-06-21 Premier Image Technology Corporation Portable projector using an LED and related heat dissipating system
US20070273220A1 (en) * 2006-05-12 2007-11-29 Taihei Koyama Apparatus for controller-integrated motor
US8651668B2 (en) * 2009-03-25 2014-02-18 Seiko Epson Corporation Projector
US20100245778A1 (en) * 2009-03-25 2010-09-30 Seiko Epson Corporation Projector
US20100245779A1 (en) * 2009-03-25 2010-09-30 Seiko Epson Corporation Projector
US8348433B2 (en) 2009-03-25 2013-01-08 Seiko Epson Corporation Liquid-cooling device including liquid pumping unit and liquid storage unit and projector including liquid-cooling device
US20100253923A1 (en) * 2009-04-03 2010-10-07 Seiko Epson Corporation Heat exchanger and projector
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US20130070453A1 (en) * 2010-05-31 2013-03-21 NEC DIsplaay Solutions, Ltd. Display device
US9804484B2 (en) * 2010-05-31 2017-10-31 Nec Corporation Display device
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US9197869B2 (en) * 2012-06-25 2015-11-24 Sony Corporation Video display device and cooling system
US20160124292A1 (en) * 2013-09-03 2016-05-05 Sony Corporation Light source device and image display device
US9857671B2 (en) * 2013-09-03 2018-01-02 Sony Corporation Light source device and image display device
US10606155B2 (en) 2013-09-03 2020-03-31 Sony Corporation Light source device and image display device
US20160088768A1 (en) * 2014-09-24 2016-03-24 Delta Electronics, Inc. Rotatable-type liquid-cooled heat sink and disposition method for the same
US10627876B2 (en) * 2014-09-24 2020-04-21 Delta Electronics, Inc. Rotatable-type liquid-cooled heat sink and disposition method for the same
US20160234968A1 (en) * 2015-02-10 2016-08-11 Dynatron Corporation Liquid-Cooled Heat Sink for Electronic Devices
US9818671B2 (en) * 2015-02-10 2017-11-14 Dynatron Corporation Liquid-cooled heat sink for electronic devices
US10111362B2 (en) * 2015-08-20 2018-10-23 Cooler Master Co., Ltd. Liquid-cooling heat dissipation device
US20170055370A1 (en) * 2015-08-20 2017-02-23 Cooler Master Co., Ltd. Liquid-cooling heat dissipation device
US10040001B2 (en) * 2015-11-27 2018-08-07 Delta Electronics, Inc. Liquid cooling device and air collector thereof
US20170151511A1 (en) * 2015-11-27 2017-06-01 Delta Electronics, Inc. Liquid cooling device and air collector thereof
US10646797B2 (en) 2015-11-27 2020-05-12 Delta Electronics, Inc. Liquid cooling device and air collector thereof
CN108108002A (zh) * 2017-12-22 2018-06-01 联想(北京)有限公司 散热器和电子设备
CN108153389A (zh) * 2017-12-25 2018-06-12 郑州秉茂达电子科技有限公司 一主机带双显示器的办公用计算机
CN110618543A (zh) * 2019-09-09 2019-12-27 靖江荣平警用装备制造有限公司 一种ai系统人工智能眼镜
US20220034591A1 (en) * 2020-07-31 2022-02-03 Coretronic Corporation Liquid cooling device and projection device
CN114063371A (zh) * 2020-07-31 2022-02-18 中强光电股份有限公司 液冷装置及投影设备

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