TWI445915B - Heat dissipating module and projection apparatus - Google Patents

Description

Thermal module and projection device thereof

The present invention relates to a heat dissipation module, and more particularly to a heat dissipation module applied to a projection device.

In general, in order to keep the electronic product within its normal operating temperature range, heat-dissipating fins (Fin) are disposed on the heating elements of the electronic product, and the cooling airflow provided by the fan is used to quickly remove the heating element. The heat generated during operation. In recent years, a heat pipe derived from the conversion of a liquid state and a gasous state to derive heat energy generated by the operation of a heating element has been gradually recognized for its high heat transfer capacity and long-distance heat transfer. . Patents relating to heat pipes are, for example, U.S. Patent Nos. 7000687 and 7143819, and Republic of China Patent Nos. 334959, 539398 and 200810673. Patents relating to heat sink fins are, for example, Republic of China Patent Nos. 249426, 260772 and 261984.

The heat pipe works by using the evaporation and condensation of the working fluid to transfer heat. First, the liquid working fluid evaporates into a gaseous working fluid by absorbing heat generated by a heating element adjacent to the evaporation end of the heat pipe. When the gaseous working fluid is subjected to a slight pressure difference, it will flow to the Condenser of the heat pipe and condense to a liquid at the condensation end and release heat. The liquid working fluid condensed at the condensation end can be transported back to the evaporation end by the capillary structure on the inner wall of the heat pipe.

When the heat pipe is vertically placed with the condensation end facing downward and the evaporation end facing upward, the working fluid in the heat pipe is subjected to gravity and is less likely to flow from the lower condensation end to the upper evaporation end, thereby affecting the heat of the heat pipe. Transmission efficiency.

The invention provides a heat dissipation module which can maintain good heat dissipation efficiency regardless of the angle at which it is placed.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.

In order to achieve one or a part or all of the above or other purposes, an embodiment of the present invention provides a heat dissipation module adapted to dissipate heat from a heat source. The heat dissipation module includes a heat absorption unit, a first heat pipe, a second heat pipe, a first heat dissipation unit, and a second heat dissipation unit. The heat absorption unit is adapted to thermally contact the heat source. The first heat pipe has a first heat absorption section, a first transmission section and a first heat dissipation section. The first transmission section is connected between the first heat absorption section and the first heat dissipation section, and the first heat absorption section is connected to the heat absorption unit. The second heat pipe has a second heat absorption section, a second transmission section and a second heat dissipation section. The second transmission section is connected between the second heat absorption section and the second heat dissipation section, and the second heat absorption section is connected to the heat absorption unit. The extending direction of the first endothermic section and the extending direction of the second endothermic section are mutually skewed. The first heat dissipation unit is connected to the first heat dissipation section. The second heat dissipation unit is connected to the second heat dissipation section.

Another embodiment of the present invention provides a projection apparatus including a light machine and a heat dissipation module. The light machine has a light source and a light valve. The light source provides an illumination beam to the light valve, and the light valve converts the illumination beam into an image beam. The heat dissipation module includes a heat absorption unit, a first heat pipe, a second heat pipe, a first heat dissipation unit, and a second heat dissipation unit. The heat absorbing unit is adapted to thermally contact the light source or the light valve or the light source and the light valve. The first heat pipe has a first heat absorption section, a first transmission section and a first heat dissipation section. The first transmission section is connected between the first heat absorption section and the first heat dissipation section, and the first heat absorption section is connected to the heat absorption unit. The second heat pipe has a second heat absorption section, a second transmission section and a second heat dissipation section. The second transmission section is connected to the second heat absorption section And the second heat dissipation section is connected to the heat absorption unit. The extending direction of the first endothermic section and the extending direction of the second endothermic section are mutually skewed. The first heat dissipation unit is connected to the first heat dissipation section. The second heat dissipation unit is connected to the second heat dissipation section.

Another embodiment of the present invention provides a heat dissipation module adapted to dissipate heat from a heat source. The heat dissipation module includes a heat absorption unit, a plurality of first heat pipes, a plurality of second heat pipes, a first heat dissipation unit, and a second heat dissipation unit. The heat absorption unit is adapted to thermally contact the heat source. Each of the first heat pipes has a first heat absorption section, a first transmission section and a first heat dissipation section. The first transmission section is connected between the first heat absorption section and the first heat dissipation section, wherein the first heat absorption sections are connected to the heat absorption unit, and the extension directions of the first heat absorption sections are located on a first geometric plane. Each of the second heat pipes has a second heat absorption section, a second transmission section and a second heat dissipation section. The second transmission section is connected between the second heat absorption section and the second heat dissipation section, wherein the second heat absorption sections are connected to the heat absorption unit, and the extension directions of the second heat absorption sections are located on a second geometric plane. The first heat dissipation unit is connected to the first heat dissipation section. The second heat dissipation unit is connected to the second heat dissipation section.

Another embodiment of the present invention provides a projection apparatus including a light machine and a heat dissipation module. The light machine has a light source and a light valve. The light source provides an illumination beam to the light valve, and the light valve converts the illumination beam into an image beam. The heat dissipation module includes a heat absorption unit, a plurality of first heat pipes, a plurality of second heat pipes, a first heat dissipation unit, and a second heat dissipation unit. The heat absorbing unit is adapted to thermally contact the light source or the light valve or the light source and the light valve. Each of the first heat pipes has a first heat absorption section, a first transmission section and a first heat dissipation section. The first transmission section is connected between the first heat absorption section and the first heat dissipation section, wherein the first heat absorption sections are connected to the heat absorption unit, and the extension directions of the first heat absorption sections are located on a first geometric plane. Each of the second heat pipes has a second heat absorption section, a second transmission section and a second heat dissipation section. The second transmission section is connected between the second heat absorption section and the second heat dissipation section, wherein the second heat absorption section The heat absorbing unit is connected, and the extending directions of the second heat absorbing segments are located on a second geometric plane. The first heat dissipation unit is connected to the first heat dissipation section. The second heat dissipation unit is connected to the second heat dissipation section.

In an embodiment of the present invention, the extending direction of the first heat absorbing section on the geometric plane of the second heat absorbing section forms a first angle with the extending direction of the second heat absorbing section, and the first angle is It is essentially 90 degrees.

In an embodiment of the invention, the first geometric plane is substantially parallel to the second geometric plane.

In an embodiment of the invention, the extending direction of the first heat absorption section and the extending direction of the first heat dissipation section are mutually skewed.

In an embodiment of the invention, the extending direction of the second heat absorption section and the extending direction of the second heat dissipation section are mutually skewed.

In an embodiment of the invention, the extending direction of the first heat dissipating section and the extending direction of the second heat dissipating section are mutually skewed.

In an embodiment of the present invention, the extending direction of the first heat dissipating section on the geometric plane of the second heat dissipating section forms a second angle with the extending direction of the second heat dissipating section, and the second angle is It is essentially 90 degrees.

In an embodiment of the invention, the first heat dissipating unit has a plurality of first fins, and the second heat dissipating unit has a plurality of second fins, and the extending direction of the first fin is different from the second fin. Extend the direction.

In an embodiment of the invention, the extending direction of the first fin is perpendicular to the extending direction of the second fin.

In the above embodiment of the present invention, since the extending direction of the first heat absorption section of the first heat pipe and the extending direction of the second heat absorption section of the second heat pipe are mutually inclined, and respectively located on two geometric planes which do not coincide with each other, In which orientation the heat source is configured, the heat dissipation module can be connected to the heat source by a plurality of heat pipes arranged in different directions. Give good heat dissipation efficiency.

The above features and advantages of the present invention will be more apparent from the following description.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only directions referring to the additional schema. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

1 is a schematic diagram of a projection apparatus in accordance with an embodiment of the present invention. Figure 2 is a block diagram of the projection device of Figure 1. Referring to FIG. 1 and FIG. 2, the projection device 10 includes a heat dissipation module 100 and a light machine 200. In the embodiment, the light machine 200 has a light source 210 and a light valve 220, wherein the light source 210 is, for example, a plurality of Light Emitting Diode (LED). The light source 210 is adapted to provide an illumination beam, and the light valve 220 is disposed on the transmission path of the illumination beam and is adapted to convert the illumination beam into an image beam.

3 is a schematic view of the heat dissipation module of FIG. 1. Referring to FIG. 1 to FIG. 3 simultaneously, the heat dissipation module 100 is adapted to dissipate heat from the optical machine 200. The heat dissipation module 100 includes a heat absorption unit 110, a plurality of first heat pipes 120, a plurality of second heat pipes 130, a first heat dissipation unit 140, and a second heat dissipation unit 150. In the present embodiment, the heat absorption unit 110 is adapted to thermally contact the light source 210 or the light valve 220 of the optical machine 200. In another embodiment not shown, the heat absorbing unit 110 can also be in contact with the light source 210 and the light valve 220 at the same time.

The first heat pipe 120 has a first heat absorption section 122 , a first transmission section 124 and a first heat dissipation section 126 . The first transmission section 124 is connected to the first heat absorption section 122 The first heat absorption section 122 is connected to the heat absorption unit 110. The second heat pipe 130 has a second heat absorption section 132, a second transmission section 134 and a second heat dissipation section 136. The second heat transfer section 134 is connected between the second heat absorption section 132 and the second heat dissipation section 136 , and the second heat absorption section 132 is connected to the heat absorption unit 110 . The first heat dissipation unit 140 is connected to the first heat dissipation section 126. The second heat dissipation unit 150 is connected to the second heat dissipation section 136.

The heat generated by the light source 210 and the light valve 220 is transmitted to the first heat absorption section 122 and the second heat absorption section 132 via the heat absorption unit 110, and the liquid working fluid (not shown) located therein absorbs heat and evaporates into a gaseous working fluid. (not shown), the first transmission section 124 and the second transmission section 134 are respectively transmitted to the first heat dissipation section 126 and the second heat dissipation section 136, and the heat is dissipated by the first heat dissipation unit 140 and the second heat dissipation unit 150. The gaseous working fluid is condensed into a liquid working fluid and re-flowed back to the first endothermic section 122 and the second endothermic section 132 by capillary action.

4A is a partial enlarged view of the heat dissipation module of FIG. 3 at the heat absorption unit. Referring to FIG. 3 and FIG. 4A simultaneously, in the embodiment, the extending direction of the first heat absorbing section 122 and the extending direction of the second heat absorbing section 132 are mutually inclined, that is, the extending direction of the first heat absorbing section 122 and the second heat absorbing section. The direction of extension of 132 is neither parallel nor intersecting. Moreover, the extending direction of the first heat absorbing section 122 of the first heat pipe 120 is located on a first geometric plane S1, and the extending direction of the second heat absorbing section 132 of the second heat pipe 130 is located at a second geometric plane S2. Upper, and the first geometric plane S1 and the second geometric plane S2 do not coincide with each other.

Based on the above, the first heat pipe 120 and the second heat pipe 130 of the heat dissipation module 100 are mutually skewed at the first heat absorption section 122 and the second heat absorption section 132, and are respectively located at the first geometric plane S1 and the second which do not coincide with each other. On the geometric plane S2, the heat dissipation module 100 can be arranged in a stacked manner in a plurality of different orientations. The heat pipes 120 and 130 can dissipate heat to the light machine 200 regardless of the orientation of the light machine 200. In other words, when one of the heat pipes reduces the heat dissipation efficiency due to the gravity factor, the remaining heat pipes are prevented from being affected by the gravity of the working fluid during transmission due to the different orientations, thereby maintaining the heat dissipation efficiency of the heat dissipation module 100.

The details are as follows. FIG. 4B is a partial plan view of the heat dissipation module of FIG. 4A at the heat absorption unit. Referring to FIG. 4A and FIG. 4B , in the embodiment, the projection direction of the first heat absorption section 122 is formed on the second geometric plane S2 where the second heat absorption section 132 is located, and the extension direction of the second heat absorption section 132 is formed. The first angle T1 is, and the first angle T1 is substantially 90 degrees. Furthermore, the first geometric plane S1 is substantially parallel to the second geometric plane S2. The arrangement of the first heat absorption section 122 and the second heat absorption section 132 is not limited herein, and the extension direction of the first heat absorption section 122 and the extension direction of the second heat absorption section 132 can be made to be skewed, and the first geometric plane S1 and the first geometric plane S1 are The arrangement in which the second geometric planes S2 do not coincide with each other can be used as the arrangement of the heat dissipation module 100.

Referring to FIG. 3 again, in the first heat pipe 120 and the second heat pipe 130 of the embodiment, the extending direction of the first heat absorption section 122 and the extending direction of the first heat dissipation section 126 are mutually inclined, and the extension of the second heat absorption section 132 is extended. The direction and the extending direction of the second heat dissipating section 136 are mutually skewed. This is achieved by disposing the heat absorption section and the heat dissipation section in the same heat pipe in different orientations, thereby avoiding the transmission efficiency of the working fluid therein due to gravity.

Similarly, the direction in which the extending direction of the first heat dissipating portion 126 and the extending direction of the second heat dissipating portion 136 are mutually skewed are also factors for avoiding the influence of gravity described above. In this embodiment, the projection direction 126 of the first heat dissipation section 126 on a third geometric plane S3 where the second heat dissipation section 136 is located forms a second angle with the extension direction 136 ′ of the second heat dissipation section 136. T2, and the second angle T2 is substantially 90 degrees, which makes the first heat dissipation section 126 and the second heat dissipation section 136 different. Orientation, when the liquid working fluid condensed in the second heat dissipating section 136 has a flow direction F which is opposite to the gravity direction G, and the liquid working fluid is not easily returned to the second heat absorbing section 132, the first heat pipe 120 is first. The liquid working fluid in the heat dissipating section 126 is still able to maintain its flow without being affected by gravity, thereby allowing the first heat pipe 120 to maintain heat dissipation.

On the other hand, the first heat dissipation unit 140 has a plurality of first fins 142 , and the second heat dissipation unit 150 has a plurality of second fins 152 , and the first fins 142 extend in a different direction from the second fins 152 . Extend the direction. In this embodiment, the extending direction of the first fin 142 is substantially perpendicular to the extending direction of the second fin 152, thereby matching the first heat dissipation portion 126 and the second heat dissipation portion 136 to maintain the heat dissipation module 100. Better heat dissipation efficiency.

FIG. 5 is an exploded perspective view of the heat absorbing unit, the first heat absorbing section, and the second heat absorbing section of the heat dissipation module of FIG. Referring to FIG. 5, in the embodiment, the heat absorbing unit 110 includes a first portion 112 and a second portion 114. The first heat absorption portion 122 is disposed between the first portion 112 and the second portion 114 by a plurality of screws 116. After the first portion 112 and the second portion 114 are combined and fixed, the second heat absorption portion 132 is disposed on the first portion 112 to achieve the effect of laminating the first heat absorption portion 122 and the second heat absorption portion 132. However, in other embodiments not shown, the heat absorbing unit 110 can also adopt other structural designs to achieve the effect of laminating the first heat absorbing section 122 and the second heat absorbing section 132 and skewing each other.

In summary, in the above embodiment of the present invention, the extending direction of the first heat absorption section and the extending direction of the second heat absorption section are mutually skewed, and are respectively located in the first geometric plane and the second which do not coincide with each other. On the geometric plane, the heat dissipation module can dissipate the light machine regardless of the orientation of the light machine.

Furthermore, the heat absorption section and the heat dissipation section of the heat pipe are mutually inclined, and the first heat dissipation section and the second heat dissipation section connected to the heat dissipation unit are also skewed to each other, thereby making the heat dissipation module The heat pipe in the middle can reduce the heat dissipation efficiency due to gravity. Even if one of the heat pipes or heat pipes is reduced in efficiency due to gravity, the other heat pipes or the rest of the heat pipe can maintain the heat dissipation efficiency. Let the heat dissipation module effectively dissipate heat from the heat source.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

10‧‧‧Projector

100‧‧‧ Thermal Module

110‧‧‧heat absorption unit

120‧‧‧First heat pipe

122‧‧‧First heat absorption section

124‧‧‧First transmission segment

126‧‧‧First heat sink

126'‧‧‧Projection of the first heat sink on S3

130‧‧‧second heat pipe

132‧‧‧second heat absorption section

134‧‧‧second transmission section

136‧‧‧second heat sink

136’‧‧‧ Extension direction

140‧‧‧First heat sink unit

142‧‧‧First fin

150‧‧‧second heat sink unit

152‧‧‧second fin

200‧‧‧Optical machine

210‧‧‧Light source

220‧‧‧Light valve

F‧‧‧Flow direction

G‧‧‧Gravity direction

S1‧‧‧first geometric plane

S2‧‧‧Second geometry plane

S3‧‧‧ third geometric plane

T1‧‧‧ first angle

T2‧‧‧second angle

1 is a schematic diagram of a projection apparatus in accordance with an embodiment of the present invention.

Figure 2 is a block diagram of the projection device of Figure 1.

3 is a schematic view of the heat dissipation module of FIG. 1.

4A is a partial enlarged view of the heat dissipation module of FIG. 3 at the heat absorption unit.

4B is a partial plan view of the heat dissipation module of FIG. 4A at the heat absorption unit.

FIG. 5 is an exploded perspective view of the heat absorbing unit, the first heat absorbing section, and the second heat absorbing section of the heat dissipation module of FIG.

100‧‧‧ Thermal Module

110‧‧‧heat absorption unit

120‧‧‧First heat pipe

122‧‧‧First heat absorption section

124‧‧‧First transmission segment

126‧‧‧First heat sink

126'‧‧‧Projection of the first heat sink on S3

130‧‧‧second heat pipe

132‧‧‧second heat absorption section

134‧‧‧second transmission section

136‧‧‧second heat sink

136’‧‧‧ Extension direction

140‧‧‧First heat sink unit

142‧‧‧First fin

150‧‧‧second heat sink unit

152‧‧‧second fin

F‧‧‧Flow direction

G‧‧‧Gravity direction

S3‧‧‧ third geometric plane

T2‧‧‧second angle

Claims (16)

A heat dissipation module is configured to dissipate heat from a heat source, the heat dissipation module includes: a heat absorption unit adapted to be in thermal contact with the heat source; and a first heat pipe having a first heat absorption section, a first transmission section, and a heat dissipation module a first heat dissipating section is connected between the first heat absorbing section and the first heat dissipating section, and the first heat absorbing section is connected to the heat absorbing unit; and a second heat pipe has a second heat absorbing section, a second transmission section is connected between the second heat absorption section and the second heat dissipation section, and the second heat absorption section is connected to the heat absorption unit, the first heat absorption section The extending direction of the second heat absorbing section is mutually inclined, the extending direction of the first heat dissipating section and the extending direction of the second heat dissipating section are mutually inclined; a first heat dissipating unit is connected to the first heat dissipating section; The second heat dissipation unit is connected to the second heat dissipation section. The heat dissipation module of claim 1, wherein the projection of the first heat absorption section on a geometric plane of the second heat absorption section forms a projection direction with the extension direction of the second heat absorption section. The first angle is, and the first angle is substantially 90 degrees. The heat dissipation module of claim 1, wherein the extending direction of the first heat absorption section and the extending direction of the first heat dissipation section are mutually skewed. The heat dissipation module of claim 1, wherein the extending direction of the second heat absorption section and the extending direction of the second heat dissipation section are mutually skewed. The heat dissipation module of claim 1, wherein the projection of the first heat dissipation section on a geometric plane of the second heat dissipation section forms a projection direction with the extension direction of the second heat dissipation section. The second angle is, and the second angle is substantially 90 degrees. The heat dissipation module of claim 1, wherein the first heat dissipation unit has a plurality of first fins, and the second heat dissipation unit has a plurality of second fins, and the extension direction of the first fins Different from the extending direction of the second fins. The heat dissipation module of claim 6, wherein the extending direction of the first fins is perpendicular to the extending direction of the second fins. A projection device comprising: a light machine having a light source and a light valve, the light source providing an illumination beam to the light valve, wherein the light valve converts the illumination beam into an image beam; and a heat dissipation module comprising: a heat absorbing unit adapted to thermally contact the light source or the light valve or the light source and the light valve; a first heat pipe having a first heat absorption section, a first transmission section and a first heat dissipation section, the first The transmission section is connected between the first heat absorption section and the first heat dissipation section, and the first heat absorption section is connected to the heat absorption unit; a second heat pipe has a second heat absorption section, a second transmission section and a first a second heat dissipating section is connected between the second heat absorbing section and the second heat dissipating section, and the second heat absorbing section is connected to the heat absorbing unit, the extending direction of the first heat absorbing section and the second heat absorbing section The extending direction of the segment is mutually inclined, the extending direction of the first heat dissipating segment and the extending direction of the second heat dissipating segment are mutually inclined; a first heat dissipating unit is connected to the first heat dissipating portion; and a second heat dissipating unit is connected to the first Two heat dissipation sections. A heat dissipation module is configured to dissipate heat from a heat source, the heat dissipation module comprising: a heat absorption unit adapted to thermally contact the heat source; a plurality of first heat pipes, each having a first heat absorption section, a first heat transfer section, and a first heat dissipation section, wherein the first heat transfer sections are connected between the first heat absorption sections and the first heat dissipation sections. The first heat absorption segments are connected to the heat absorption unit, and the extension directions of the first heat absorption segments are on a first geometric plane; the plurality of second heat pipes each have a second heat absorption segment and a second heat transmission segment. And a second heat dissipating segment is connected between the second heat absorbing segments and the second heat dissipating segments, wherein the second heat absorbing segments are connected to the heat absorbing unit, and the second heat absorbing segments are The extending direction is located on a second geometric plane, and the first geometric plane does not coincide with the second geometric plane, and the extending direction of the first heat dissipating section and the extending direction of the second heat dissipating section are mutually skewed; a unit that connects the first heat dissipation segments; and a second heat dissipation unit that connects the second heat dissipation segments. The heat dissipation module of claim 9, wherein the first geometric plane is substantially parallel to the second geometric plane. The heat dissipation module of claim 9, wherein the extending direction of the first heat absorption section and the extending direction of the first heat dissipation section are mutually skewed. The heat dissipation module of claim 9, wherein the extending direction of the second heat absorption section and the extending direction of the second heat dissipation section are mutually skewed. The heat dissipation module of claim 9, wherein the projection of the first heat dissipation section on a plane on which the second heat dissipation section is located forms a first direction with the extension direction of the second heat dissipation section. Two angles, and the second angle is substantially 90 degrees. The heat dissipation module of claim 9, wherein the first heat dissipation unit has a plurality of first fins, and the second heat dissipation unit has a plurality of second fins, and the extension direction of the first fins Different from the extending direction of the second fins. The heat dissipation module of claim 14, wherein the extending direction of the first fins is perpendicular to the extending direction of the second fins. A projection device comprising: a light machine having a light source and a light valve, the light source providing an illumination beam to the light valve, wherein the light valve converts the illumination beam into an image beam; and a heat dissipation module comprising: a heat absorbing unit adapted to thermally contact the light source or the light valve or the light source and the light valve; the plurality of first heat pipes each having a first heat absorption section, a first transmission section and a first heat dissipation section, The first transmission section is connected between the first heat absorption section and the first heat dissipation sections, wherein the first heat absorption sections are connected to the heat absorption unit, and the extension directions of the first heat absorption sections are at the first a plurality of second heat pipes each having a second heat absorption section, a second transmission section and a second heat dissipation section, wherein the second transmission sections are connected to the second heat absorption sections and the second heat dissipation sections Between the segments, wherein the second heat absorbing segments are connected to the heat absorbing unit, the extending directions of the second heat absorbing segments are on a second geometric plane, and the first geometric plane does not coincide with the second geometric plane. The extension direction of the first heat dissipation section and the first Cooling the extending direction of each skew segment; a first heat sink, connected to the plurality of first heat dissipation section; and a second cooling unit connected to the plurality of second cooling section.