Projector

Abstract

This projector comprises: a housing; a lens unit disposed inside the housing; a light source assembly provided to irradiate the lens unit with light and including a plurality of heat-generating units; a plurality of heat sinks corresponding to the plurality of heat-generating units and provided to receive heat therefrom in order to discharge heat generated by the plurality of heat-generating units; a thermoelectric cooling module disposed inside the housing to cool air introduced into the plurality of heat sinks; a cooling fan provided to blow the air cooled by the thermoelectric cooling module; and a flow path guide disposed between the thermoelectric cooling module and the plurality of heat sinks to guide the airflow caused by the cooling fan, and operable in a first mode in which the air cooled by the thermoelectric cooling module is guided to some of the plurality of heat sinks and a second mode in which the cooled air is guided to each of the plurality of heat sinks.

Description

projector

[0001] The present disclosure relates to a projector.

[0002] A projector is an optical device used to magnify and project images, videos, text, etc., onto a screen through a lens.

[0003] With the advancement of technology enabling high-definition displays, not only the previously widely used direct view type display devices but also large-screen projection TVs, PDP TVs, and projectors are gaining popularity as display devices.

[0004] In particular, projectors have the advantage of being able to create large screens compared to other display devices, so their use is gradually expanding beyond their traditional business applications as display devices for personal computers (PCs), such as seminar presentations, to include home display devices.

[0005] Recently, as the applications of projectors have expanded, they are being used not only indoors but also outdoors, leading to a rising demand for portable projectors. However, as image quality and performance improve, the amount of heat generated increases, necessitating a heat dissipation system to control this heat. Consequently, as the size of the heat dissipation unit required to construct a system capable of managing large amounts of heat grows, the overall size of the projector product also increases. Therefore, structural improvements to the heat dissipation system are required to enable the miniaturization of projectors.

[0006] One aspect of the present disclosure provides a projector with an improved structure.

[0007] One aspect of the present disclosure provides a projector that is miniaturized without degrading image quality.

[0008] One aspect of the present disclosure provides a projector that selectively dissipates heat according to the heat dissipation requirement.

[0009] One aspect of the present disclosure provides a projector capable of efficiently maintaining a constant temperature.

[0010] The technical problems to be solved in this document are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0011] A projector according to one embodiment may include a housing, a lens portion disposed inside the housing, a light source assembly including a plurality of heat-generating portions arranged to irradiate light onto the lens portion, a plurality of heat sinks arranged to receive heat corresponding to the plurality of heat-generating portions in order to release heat generated from each of the plurality of heat-generating portions, a thermoelectric cooling module disposed inside the housing to cool air flowing into the plurality of heat sinks, a cooling fan arranged to blow air cooled by the thermoelectric cooling module, and a flow guide disposed between the thermoelectric cooling module and the plurality of heat sinks to guide the airflow by the cooling fan, and capable of operating in a first mode for guiding the air cooled by the thermoelectric cooling module to some of the heat sinks among the plurality of heat sinks and a second mode for guiding the cooled air to each of the plurality of heat sinks.

[0012] A projector according to one embodiment includes a housing having an intake port formed to allow external air to be introduced on the lower surface, a lens portion extending forward and backward, a light source assembly including a first heating portion and a second heating portion disposed on a surface different from the first heating portion, a first heat sink arranged to receive heat from the first heating portion, a second heat sink arranged to receive heat from the second heating portion, a cooling fan including a flow path guide that guides air flow to cool either the first heat sink or the second heat sink, and a control unit that controls the direction of the flow path guide so that air flows to the heat sink with the higher temperature among the first heat sink and the second heat sink.

[0013] FIG. 1 is a perspective view of a projector according to one embodiment of the present disclosure.

[0014] FIG. 2 is a bottom view of a projector according to one embodiment of the present disclosure.

[0015] FIG. 3 is a plan view of the interior of a projector according to one embodiment of the present disclosure.

[0016] FIG. 4 is a bottom view of the interior of a projector according to one embodiment of the present disclosure.

[0017] FIG. 5 is an enlarged view of a heat dissipation system according to one embodiment of the present disclosure.

[0018] FIG. 6 is an enlarged view of a heat dissipation system according to one embodiment of the present disclosure.

[0019] FIG. 7 is an enlarged view of a heat dissipation system according to one embodiment of the present disclosure.

[0020] FIG. 8 is a perspective view of a cross-sectional view according to one embodiment of the present disclosure.

[0021] FIG. 9 is a front view of a cross-sectional view according to one embodiment of the present disclosure.

[0022] FIG. 10 is a plan view of a cross-sectional view according to one embodiment of the present disclosure.

[0023] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0024] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0025] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0026] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0027] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0028] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order).

[0029] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0030] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0031] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0032] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0033] Meanwhile, terms such as "front-rear direction," "front," "rear," "upper side," and "lower side" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the term "upper / lower direction" below refers to the Z direction based on the drawings, and "upper" and "lower" may refer to the upward (+Z direction) and downward (-Z direction) directions in the Z direction, respectively, based on the drawings. The term "front-rear direction" below refers to the X direction based on the drawings, and "front" and "rear" may refer to the front (+X direction) and rear (-X direction), respectively, in the X direction based on the drawings.

[0034] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the attached drawings.

[0035] FIG. 1 is a perspective view of a projector according to one embodiment of the present disclosure. FIG. 2 is a bottom view of a projector according to one embodiment of the present disclosure.

[0036] Referring to FIGS. 1 and 2, a projector (1) according to one embodiment of the present disclosure may include a housing (10).

[0037] The interior of the housing (10) can be connected to the outside through a formed lens hole (not shown). A lens (2, see FIG. 3) can project an image onto a projection area through the lens hole formed in the housing. The image may include a photograph, video, text, etc.

[0038] A speaker (11) may be formed on the front of the housing (10). Sound of the image may be played through the speaker (11). A remote control receiver (not shown) may be formed on the front of the housing (10). The remote control receiver can receive a signal from a remote control (not shown). The control unit (23) can control the projector (1) based on information received from the remote control receiver.

[0039] A wire connection part (not shown) may be formed on the rear of the housing (10). Various wires can be connected to the projector (1) through the wire connection part.

[0040] An intake port (12) may be formed on the lower surface of the housing (10). External air may be introduced into the interior of the housing (10) through the intake port (12). Legs (14) for supporting the projector (1) may be formed on the lower surface of the housing (10). The legs (14) prevent the bottom surface of the housing (10) from coming into contact with the floor surface, thereby preventing the path for external air to be introduced through the intake port (12) formed on the lower surface of the housing (10) from being blocked.

[0041] An exhaust port (13) may be formed on the side of the housing (10). Air inside the housing (10) may be discharged to the outside through the exhaust port (13). Heat generated inside the housing (10) may be released to the outside through the exhaust port (13). The exhaust port (13) may be formed on the rear of the housing (10). In the drawing, the exhaust port (13) is shown as being formed on the side and rear, but is not limited thereto.

[0042] FIG. 3 is a plan view of the interior of a projector according to one embodiment of the present disclosure.

[0043] Referring to FIG. 3, a projector (1) according to one embodiment of the present disclosure may include a lens portion (20). The lens portion (20) may be disposed inside a housing. The lens portion (20) may include a lens (21). An image may be formed in the projector (1) through the lens portion (20). The lens portion (20) may be located in the center inside the housing (10).

[0044] The projector (1) may include a power supply unit (22). The power supply unit (22) may supply power to operate the projector (1). The power supply unit (22) may include a control unit (23). As will be described later, the control unit (23) may operate a thermoelectric cooling module (60, see FIG. 4) to supply heat to one side and output a signal to control the direction of the flow guide (45) to drive the projector (1).

[0045] The projector (1) may include a light source assembly (50). The light source assembly (50) may be configured to irradiate light onto the lens portion (20). The light source assembly (50) may be configured to irradiate laser light onto the lens portion (20). The projection principle of the light source assembly (50) may be a CRT (Cathode-Ray Tube), LCD (Liquid Crystal Display), DLP (Digital Light Processing), etc., and is not limited to any one of these principles.

[0046] The projector (1) may include a heating element (100). The number of heating elements (100) may be multiple. The heating element (100) may include a third heating element (101), a fourth heating element (102), a first heating element (103), and a second heating element (104). The power supply unit (22) may include the third heating element (101). The lens unit (20) may include the fourth heating element (102). The light source assembly (50) may include the first heating element (103) and the second heating element (104).

[0047] The projector (1) may include a fan (40). The fan (40) can prevent the temperature inside the housing (10) from rising due to the heat from the heat source (100). The fan (40) may include a cooling fan (44), a first fan (41), a second fan (42), and a heat dissipation fan (43).

[0048] The first fan (41) can release heat generated from the third heating element (101) through the exhaust port (13). The number of first fans (41) may be multiple.

[0049] The projector (1) may include a heat sink (110). There may be multiple heat sinks (110). The heat sink (110) may be provided to receive heat from the heat source (100). The heat sink (110) may be provided to release heat generated from the heat source (100). The heat sink (110) may include a first heat sink (112), a second heat sink (113), and a third heat sink (111).

[0050] The third heat sink (111) may be provided to receive heat from the fourth heat source (102). The second fan (42) may be positioned parallel to the third heat sink (111). The second fan (42) may form a wind toward the exhaust port (13) to discharge the heat of the third heat sink (111) to the outside of the housing (10) through the exhaust port (13). In the drawing, the third heat sink (111) is shown positioned between the exhaust port (13) and the second fan (42), but is not limited thereto, and the third heat sink (111) may be positioned in front of the second fan (42).

[0051] The first heating element (103) of the light source assembly (50) is disposed on one side of the light source assembly (50), and the second heating element (104) may be disposed on a different side from the first heating element (103). By disposing of the first heating element (103) and the second heating element (104) on different sides of the light source assembly (50), the volume of the light source assembly (50) can be prevented from increasing. The light source assembly (50) can emit the most heat inside the housing (10). The light source assembly (50) can output RGB. The first heating element (103) can emit heat up to 100W (watts, [J / s]). The second heating element (104) can emit heat up to 100W (watts, [J / s]).

[0052] The first heating element (103) and the second heating element (104) may be high heating elements. Accordingly, a plurality of heat sinks (112, 113) for dissipating heat may be provided.

[0053] The first heat sink (112) and the second heat sink (113) may be arranged side by side. A cooling fan (44) may be placed on one side of the first heat sink (112) and / or the second heat sink (113). A heat dissipation fan (43) may be placed on the other side facing the one side of the first heat sink (112) and / or the second heat sink (113).

[0054] The first heat sink (112) may be provided to receive heat from the first heat source (103). The first heat sink (112) may be positioned to be in contact with the first heat source (103). The first heat sink (112) may be positioned in front of the light source assembly (50). As will be described later, the heat dissipation fins (125a) of the first heat sink (112) may be positioned to extend in the left-right direction.

[0055] The second heat sink (113) may be provided to receive heat from the second heating element (104). The second heat sink (113) may be positioned so as to be spaced apart from the second heating element (104). The second heat sink (113) may be positioned in front of the light source assembly (50). The second heat sink (113) may be positioned in front of the first heat sink (112). Heat from the second heating element (104) may be transferred to the second heat sink (113) through the heat pipe (123). A portion of the heat pipe (123) may be embedded in the heat sink (120) to transfer heat to the heat dissipation fins (125b). As will be described later, the heat dissipation fins (125b) of the second heat sink (113) may be positioned to extend in the left-right direction.

[0056] One heat sink (112, 113) may be placed for each heat-generating part (103, 104) included in the light source assembly (50). As will be described later, a thermoelectric cooling module (60, see FIG. 4) can increase the efficiency of the heat sink (112, 113) for discharging heat from the light source assembly (50). As a result, it is possible to maintain a constant temperature inside the housing (10).

[0057] The projector (1) may include a heat dissipation fan (43). The heat dissipation fan (43) may be placed inside the housing (10). The heat dissipation fan (43) may be placed facing the exhaust port (13) so that heat inside the housing (10) is discharged through the exhaust port (13). The heat dissipation fan (43) may be provided to discharge heat from the first heat sink (112) and the second heat sink (113) to the outside of the housing (10).

[0058] The projector (1) may include a cooling fan (44). Although the number of cooling fans (44) is shown as one in the drawing, it is not limited thereto, and the number of cooling fans (44) may be multiple depending on the space inside the housing (10), the required amount of heat dissipation, etc. The cooling fan (44) may be placed inside the housing (10).

[0059] The projector (1) may include a Euro guide (45). The Euro guide (45) may be provided to control the wind direction of the cooling fan (44). The Euro guide (45) may be rotatable.

[0060] The number of flow guides (45) may be multiple. Multiple flow guides (45) may have the same length. Multiple flow guides (45) may have different lengths. The length of the flow guides (45) is not limited as shown in the drawing and includes all lengths capable of guiding the airflow path formed by the cooling fan (44). The flow guides (45) can guide the airflow of the cooling fan (44) to the first heat sink (112) and / or the second heat sink (113).

[0061] FIG. 4 is a bottom view of the interior of a projector according to one embodiment of the present disclosure.

[0062] Referring to FIG. 4, a projector (1) according to one embodiment of the present disclosure may include a thermoelectric cooling module (60). The thermoelectric cooling module (60) may be placed inside the projector (1). The thermoelectric cooling module (60) may be placed above an intake port (12).

[0063] The thermoelectric cooling module (60) may include an heat absorption heatsink (61), a heat dissipation heatsink (63), and a thermoelectric element (65). The thermoelectric element (65) may be placed between the heat absorption heatsink (61) and the heat dissipation heatsink (63). When current flows through the thermoelectric element (65), heat from the heat absorption heatsink (61) can be transferred to the heat dissipation heatsink (63).

[0064] The thermoelectric cooling module (60) receives external air through the intake port (12) and can cool the temperature of the heat-absorbing heat sink (61) side to 20 degrees Celsius or lower. Preferably, the temperature of the heat-absorbing heat sink (61) side can be cooled to 15 degrees Celsius or higher and 20 degrees Celsius or lower.

[0065] A cooling fan (44) may be placed between the heat-absorbing heat sink (61), the first heat sink (112), and the second heat sink (113) to supply air cooled in the heat-absorbing heat sink (61) to the first heat sink (112) and the second heat sink (113).

[0066] FIG. 5 is an enlarged view of a heat dissipation system according to one embodiment of the present disclosure. FIG. 6 is an enlarged view of a heat dissipation system according to one embodiment of the present disclosure. FIG. 7 is an enlarged view of a heat dissipation system according to one embodiment of the present disclosure.

[0067] Referring to FIGS. 5 to 7, a projector (1) according to one embodiment of the present disclosure may include a light source assembly (50).

[0068] The amount of heat generated by the first heating unit (103) and the second heating unit (104) may differ. The control unit (23) can adjust the direction of the flow guide (45). The control unit (23) can adjust the direction of the flow guide (45) according to the required amount of heat generated by the first heating unit (103) and the second heating unit (104). An operation of guiding airflow by the cooling fan (44) to some of the heat sinks among the plurality of heat sinks (110) can be called the first mode. An operation of guiding airflow by the cooling fan (44) to each of the plurality of heat sinks (110) can be called the second mode.

[0069] The airflow path from the cooling fan (44) to the first heat sink (112) can be called the first airflow path (71). The airflow path from the cooling fan (44) to the second heat sink (113) can be called the second airflow path (72).

[0070] For example, if the required amount of heat dissipation for both the first heating element (103) and the second heating element (104) is high, the control unit (23) can adjust the direction of the flow guide (45) so that the airflow of the cooling fan (44) flows toward the first heat sink (112) and the second heat sink (113). That is, the flow guide (45) can cause the airflow from the cooling fan (44) to flow toward the first flow path (71) and the second flow path (72). The cooling fan (44) can cool the first heat sink (112) and the second heat sink (113). The control unit (23) can supply the airflow of the cooling fan (44) to the heat sink with the higher temperature among the first heat sink (112) and the second heat sink (113).

[0071] For example, if the required heat dissipation amount of the first heating element (103) is higher than that of the second heating element (104), the control unit (23) can adjust the direction of the flow guide (45) so that the wind direction of the cooling fan (44) flows toward the first heat sink (112). That is, the flow guide (45) can prevent the airflow from the cooling fan (44) from flowing toward the second flow path (72). The cooling fan (44) can cool the first heat sink (112).

[0072] For example, if the required heat dissipation amount of the second heating unit (104) is higher than that of the first heating unit (103), the control unit (23) can adjust the direction of the flow guide (45) so that the wind direction of the cooling fan (44) flows toward the second heat sink (113). That is, the flow guide (45) can prevent the airflow from the cooling fan (44) from flowing toward the first flow path (71). The cooling fan (44) can cool the second heat sink (113).

[0073] FIG. 8 is a perspective view of a cross-sectional view according to one embodiment of the present disclosure.

[0074] Referring to FIG. 8, a projector (1) according to one embodiment of the present disclosure may include a light source assembly (50) and a heat sink (112, 113) for discharging heat generated therefrom.

[0075] The heat dissipation fins (125a) of the first heat sink (112) may be arranged to extend in the left-right direction. A cooling fan (44) may be arranged in the same direction as the direction in which the heat dissipation fins (125a) of the first heat sink (112) are extended. If a flow guide (45) is formed so that the air from the cooling fan (44) can flow to the first heat sink (112), the air from the cooling fan (44) may be supplied to the entire heat dissipation fins (125a). The cooling fan (44) may cause the cooled air supplied from the heat absorption heat sink (61) to flow to the heat dissipation fins (125a) of the first heat sink (112).

[0076] The heat dissipation fins (125b) of the second heat sink (113) may be arranged to extend in the left-right direction. A cooling fan (44) may be arranged in the same direction as the direction in which the heat dissipation fins (125b) of the second heat sink (113) are extended. If a flow guide (45) is formed so that the air from the cooling fan (44) can flow to the second heat sink (113), the air from the cooling fan (44) may be supplied to the entire heat dissipation fins (125b). The cooling fan (44) may cause the cooled air supplied from the heat absorption heat sink (61) to flow to the heat dissipation fins (125b) of the second heat sink (113).

[0077] FIG. 9 is a front view of a cross-sectional view according to one embodiment of the present disclosure.

[0078] Referring to FIG. 9, a projector (1) according to one embodiment of the present disclosure may include a thermoelectric cooling module (60).

[0079] The thermoelectric cooling module (60) may include an absorption pipe (62) and a heat dissipation pipe (64). An absorption heat sink (61) may accommodate the absorption pipe (62). The absorption pipe (62) may be formed to extend in the direction in which the absorption heat sink (61) extends. The length of the absorption pipe (62) may be equal to the length of the absorption heat sink (61) or shorter than the length of the absorption heat sink (61). There may be multiple absorption pipes (62). The absorption pipe (62) may be arranged to reduce the temperature difference of the absorption heat sink (61) itself.

[0080] The heat dissipation heatsink (63) can accommodate a heat dissipation pipe (64). The heat dissipation pipe (64) may be formed to extend in the direction in which the heat dissipation heatsink (63) extends. The length of the heat dissipation pipe (64) may be equal to the length of the heat dissipation heatsink (63) or shorter than the length of the heat dissipation heatsink (63). There may be multiple heat dissipation pipes (64). The heat dissipation pipe (64) may be provided to reduce the temperature difference of the heat dissipation heatsink (63) itself.

[0081] The thermoelectric cooling module (60) includes an absorption pipe (62) and a heat dissipation pipe (64), so that the temperature difference between the absorption heat sink (61) and the heat dissipation heat sink (63) can be kept constant. As a result, the efficiency of transferring heat from the absorption heat sink (61) to the heat dissipation heat sink (63) can be increased.

[0082] FIG. 10 is a plan view of a cross-sectional view according to one embodiment of the present disclosure.

[0083] Referring to FIG. 10, a projector (1) according to one embodiment of the present disclosure may include a thermoelectric cooling module (60).

[0084] The thermoelectric cooling module (60) may be placed below the lens portion (20). The thermoelectric cooling module (60) may be placed between the lens portion (20) and the intake port (12). The thermoelectric conversion efficiency (ZT) of the thermoelectric element (65) may be 0.8 or higher.

[0085] The thermoelectric element (65) can be placed between the heat absorption heat sink (61) and the heat dissipation heat sink (63). The image quality of the projector (1) may vary depending on whether a constant temperature is maintained. If the projector (1) does not maintain a constant temperature, the image quality may deteriorate. The amount of heat generated by the light source assembly (50) may be higher than the amount of heat generated by the power supply unit (22).

[0086] Accordingly, the heat absorption heatsink (61) may be positioned to face the first heatsink (112) and the second heatsink (113) provided to dissipate heat from the light source assembly (50). The heat absorption heatsink (61) may be positioned to face the cooling fan (44). The heat dissipation heatsink (63) may be positioned to face the power supply unit (22). The first fan (41) may be provided to discharge the heat emitted by the heat dissipation heatsink (63) and the heat from the power supply unit (22) to the exhaust port (13).

[0087] The thermoelectric cooling module (60) can increase the heat transfer rate per hour of the first heat sink (112) and / or the second heat sink (113) by supplying cooled air to the first heat sink (112) and / or the second heat sink (113). The thermoelectric cooling module (60) may be configured to supply air having a temperature difference greater than the external air temperature to the first heat sink (112) and / or the second heat sink (113). It can maintain a constant temperature inside the housing (10) by discharging heat from the heat source (100). It can prevent the image quality from deteriorating by rapidly discharging heat inside the housing (10).

[0088] A projector (1) according to one embodiment comprises a housing (10), a lens unit (20) disposed inside the housing (10), a light source assembly (50) including a plurality of heating units (100) arranged to irradiate light onto the lens unit (20), a plurality of heat sinks (110) arranged to receive heat corresponding to the plurality of heating units (100) in order to release heat generated from each of the plurality of heating units (100), a thermoelectric cooling module (60) disposed inside the housing (10) to cool air flowing into the plurality of heat sinks (110), a cooling fan (44) arranged to blow air cooled by the thermoelectric cooling module (60), a first mode disposed between the thermoelectric cooling module (60) and the plurality of heat sinks (110) to guide the airflow by the cooling fan (44) and guide the air cooled by the thermoelectric cooling module (60) to some of the heat sinks (110), and the cooled air to the plurality of It includes a Euro guide (45) capable of operating in a second mode that guides each of the heat sinks (110).

[0089] The above Euro guide (45) includes a plurality of flow paths (71, 72) through which airflow from the cooling fan (44) flows to each of the plurality of heat sinks (110), and can guide the airflow from the cooling fan (44) in the first mode to prevent it from flowing to some of the plurality of flow paths (71, 72).

[0090] The above Euro guide (45) can guide the airflow from the cooling fan (44) in the second mode to flow into each of the plurality of Euros (71, 72).

[0091] The above Euro guide (45) can be rotatably provided.

[0092] The above Euro guide (45) can be rotated in the first mode to convert the operation to the second mode, and rotated in the second mode to convert the operation to the first mode.

[0093] A control unit (23) may be further included to operate the Euro guide (45) in the second mode when the difference in the amount of heat generated by the plurality of heating parts is below a certain level, and to operate the Euro guide (45) in the first mode when the difference in the amount of heat generated by the plurality of heating parts is above a certain level.

[0094] The above thermoelectric cooling module (60) can be placed below the lens portion (20).

[0095] The above housing (10) may include an intake port (12) formed on the lower surface of the housing (10) to allow external air to be introduced.

[0096] The above intake port (12) may be characterized as being formed below the thermoelectric cooling module (60).

[0097] Each of the above plurality of heating elements may be characterized by being disposed on different sides of the light source assembly (50).

[0098] At least one of the plurality of heat sinks (110) can be positioned to be in contact with the heating element (100).

[0099] At least one of the plurality of heat sinks (110) may include a heat pipe (123) for transferring heat from a heat source (100), a heat dissipation fin (125), and a heat dissipation plate (120) that accommodates a portion of the heat pipe (123) to transfer heat to the heat dissipation fin (125).

[0100] The heat dissipation fins (125) can be arranged to extend in the left and right directions so that air cooled from the thermoelectric cooling module (60) flows.

[0101] The above plurality of heat sinks (110) can be arranged side by side.

[0102] The cooling fan (44) may further include a heat dissipation fan positioned on one side of the plurality of heat sinks (110) and facing the other side of the plurality of heat sinks (110) to dissipate heat from the plurality of heat sinks (110).

[0103] A projector (1) according to one embodiment includes a housing (10) having an intake port (12) formed to allow external air to be introduced into the lower surface, a lens portion (20) extending forward and backward, a light source assembly (50) including a first heating portion (103) and a second heating portion (104) disposed on a surface different from the first heating portion (103), a first heat sink (112) arranged to receive heat from the first heating portion (103), a second heat sink (113) arranged to receive heat from the second heating portion (104), a cooling fan (44) including a flow guide (45) that guides air flow to cool either the first heat sink (112) or the second heat sink (113), and a control unit that controls the direction of the flow guide (45) so that air flows to the heat sink with the higher temperature among the first heat sink (112) and the second heat sink (113).

[0104] It may further include a thermoelectric cooling module (60) positioned above the intake port (12) and configured to cool the external air introduced from the intake port (12).

[0105] The thermoelectric cooling module (60) may include an endothermic heat sink (61), a heat dissipation heat sink, and a thermoelectric element disposed between the endothermic heat sink (61) and the heat dissipation heat sink.

[0106] The first heat sink (112) and the second heat sink (113) are arranged side by side, and the heat-absorbing heat sink (61) may be arranged to face the first heat sink (112) and the second heat sink (113).

[0107] The above control unit can control the thermoelectric cooling module (60) so that the heat-absorbing heat sink (61) cools the external air introduced from the intake port (12) to a temperature of 15 degrees or higher and 20 degrees or lower.

[0108] According to the concept of the present disclosure, the internal structure of the projector can be improved.

[0109] According to the concept of the present disclosure, a miniaturized projector can be provided.

[0110] According to the concept of the present disclosure, the amount of heat transfer can be increased by supplying cooled air to a high-temperature heat sink.

[0111] According to the concept of the present disclosure, image quality can be improved by maintaining a constant temperature inside the housing.

[0112] According to the concept of the present disclosure, the efficiency of maintaining a constant temperature inside the housing can be increased.

[0113] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs.

[0114] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. Housing; A lens portion disposed inside the above housing; A light source assembly configured to irradiate light onto the lens portion and comprising a plurality of heating elements; A plurality of heat sinks arranged to receive heat corresponding to the plurality of heat-generating parts in order to release heat generated from each of the plurality of heat-generating parts; A thermoelectric cooling module disposed inside the housing to cool the air flowing into the plurality of heat sinks; A cooling fan provided to blow air cooled by the above-mentioned thermoelectric cooling module; A projector comprising: a flow guide disposed between the thermoelectric cooling module and the plurality of heat sinks to guide airflow by the cooling fan, and capable of operating in a first mode for guiding air cooled by the thermoelectric cooling module to some of the heat sinks among the plurality of heat sinks and a second mode for guiding the cooled air to each of the plurality of heat sinks.

2. In Paragraph 1, It further includes a plurality of flow paths through which airflow by the cooling fan flows to each of the plurality of heat sinks, and The above Euro guide is a projector that guides the airflow by the cooling fan in the first mode to prevent it from flowing into a part of the plurality of Euros.

3. In Paragraph 2, The above Euro guide is a projector that guides the airflow generated by the cooling fan in the second mode to flow into each of the plurality of Euros.

4. In Paragraph 3, The above Euro guide is a projector that is rotatably configured.

5. In Paragraph 4, The above Euro guide is a projector that rotates in the first mode to convert operation to the second mode, and rotates in the second mode to convert operation to the first mode.

6. In Paragraph 1, A projector further comprising: a control unit that operates the flow guide in the second mode when the difference in the heat output of the plurality of heating parts is below a certain level, and operates the flow guide in the first mode when the difference in the heat output of the plurality of heating parts is above a certain level.

7. In Paragraph 1, The above thermoelectric cooling module is a projector positioned below the lens portion.

8. In Paragraph 7, The above-described housing is a projector that includes an intake port formed on the lower surface of the housing to allow external air to be introduced.

9. In Paragraph 8, A projector characterized in that the above intake port is formed below the above thermoelectric cooling module.

10. In Paragraph 1, A projector characterized in that each of the plurality of heating elements is disposed on a different surface of the light source assembly.

11. In Paragraph 1, A projector in which at least one of the plurality of heat sinks is positioned to be in contact with the heat source.

12. In Paragraph 1, At least one of the above plurality of heat sinks is, A heat pipe that transfers heat from the heating part, heat sink fins, A projector comprising a heat sink that accommodates a portion of the heat pipe to transfer heat to the heat sink fins.

13. In Paragraph 12, The above heat dissipation fins are arranged to extend in the left-right direction so as to allow air cooled from the thermoelectric cooling module to flow.

14. In Paragraph 1, The above plurality of heat sinks are arranged side by side in a projector.

15. In Paragraph 14, The cooling fan is positioned on one side of the plurality of heat sinks, and A projector further comprising a heat dissipation fan disposed on the other side facing one side of the plurality of heat sinks to dissipate heat from the plurality of heat sinks.

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