TWI412318B - Cooling apparatus with switchable conduit and projector having same - Google Patents

Abstract

A cooling apparatus with switchable conduit is disclosed. The cooling apparatus comprises a blower having an exit for outputting a cooling airflow; a nozzle having an inlet coupled to the exit of blower, and having an outlet, the outlet having a first conduit and a second conduit; a switching device having a pendulum and a shutter, wherein as the switching device is positioned from a first state to a second state, the pendulum forces the shutter to transit from a corresponding first state to a corresponding second state due to change of gravity direction applied thereon, and wherein the first state of shutter allows cooling airflow passing the first conduit, the second state of shutter allows cooling airflow passing the second conduit.

Description

Coolable device and projector device capable of switching air ducts

The present invention relates to a cooling device for a switchable air duct, and a projector device having the cooling device of the switchable air passage.

Current electronic devices, such as projectors, rear projection televisions, optical disk drives, computer mainframes, etc., are internally equipped with cooling devices to cool the heat generated during their operation. In addition to the volume of the projection device is a major issue, other issues, such as the cooling system, are also the goal of various manufacturers to improve. The projector uses a wall (ceiling) hanging mode and a table-mounted mode. If the projector faces the desktop surface of the desktop when the projector is in the table mode, the A side faces the ceiling when the projector is in the wall (ceiling) hanging mode. That is to say, the projector in the two modes is in a 180 degree flip relationship.

The lamp source commonly used in projectors is a high pressure mercury lamp. The existing high-power lamps (>350W) have stricter specifications on the lamp temperature; in particular, the upper and lower balance specifications of the wick temperature. Since the wick has a physical phenomenon of heat convection, and the hot air flows lightly upward, the temperature above the wick is higher than the temperature below. In the wall (ceiling) hanging mode and the table placement mode, the high hotspot position changes depending on the usage mode.

At present, projectors with more than 350W wicks are designed with two air ducts and two fans. This is not only costly but also takes up a lot of space. For a related example of the related art, reference is made to the publication of Japanese Patent Application No. JP 10-1-6307, which has an air supply direction changing element 23 for delivering a cooling airflow to a high temperature zone of the wick.

In order to maintain the balance of the upper and lower lamp temperatures, in order to meet the specifications, there is a need to develop a single air duct, a single fan, and can automatically switch the air duct mechanism with the choice of wall (ceiling) hanging and table-mounted. .

In view of the above needs, the present invention provides a cooling device for switching air ducts, which can achieve cooling effects in different modes with only one set of air ducts and fans.

One aspect of the present invention is directed to providing a cooling device for a switchable air duct that can achieve cooling purposes in different modes with only one set of air ducts and fans.

In a specific embodiment, the cooling device for the switchable air duct comprises: a fan having an air outlet for sending a cooling airflow; and a mouthpiece having an air inlet connected to the air outlet of the fan, having a An air outlet, the air outlet of the mouthpiece has a first air passage and a second air passage; a gravity switching device includes a pendulum and a gate, wherein the gravity switching device is switched from a first state to a first In the second state, the pendulum switches the gate from a corresponding first state to a second state due to a change in the direction of gravity, wherein the first state of the gate causes the cooling airflow to pass through the first air duct, and the second state of the gate The cooling airflow is passed through the second air duct.

In one embodiment, the gravity switching device includes a rotating shaft that rotates in a clockwise direction about the rotating shaft when the pendulum rotates in a clockwise direction about the rotating shaft.

In practical applications, the first state is in a 180 degree flip relationship with the second state.

In addition, the present invention provides a projector device comprising: a fan having an air outlet for sending a cooling airflow; a mouthpiece having an air inlet connected to the air outlet of the fan, having an air outlet, the mouthpiece The air outlet has a first air passage and a second air passage; a gravity switching device includes a pendulum and a gate, wherein the gravity switching device switches from a first state to a second state due to gravity The direction changes, the pendulum switches the gate from a corresponding first state to a second state, wherein the first state of the gate causes the cooling airflow to pass through the first air duct, and the second state of the gate causes the cooling airflow to pass the second wind a wick, wherein when the projector device is operated in a first condition, the gravity switching device is in a first state, and the cooling airflow sent by the cooling device is blown toward the wick through the first air passage a high temperature zone, when the projector device operates in a second condition, the gravity switching device is in a second state, and the cooling airflow delivered by the cooling device is blown to the cooling airflow through the second air duct A second high temperature zone of the core, wherein the first and second high temperature zone a high temperature region are located at different sides of the wick.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

The preferred embodiments of the present invention will be described in detail in the following description.

Referring to FIG. 1, a component related to the present invention in the projector device 10 is disclosed in a perspective view. In this state, the projector device 10 is in a first situation (table release mode), so the housing surface 101 is in this state. Facing the desktop.

As shown in FIG. 1, the projector device 10 includes a fan 103, a mouthpiece 105, a gravity switching device (109, 104, 107), and a wick 102. The fan 103 has an air outlet for delivering a cooling air flow. The mouthpiece 105 has an air inlet connected to the air outlet of the fan 103, and the mouthpiece 105 has an air outlet. The air outlet of the mouthpiece 105 has a first air passage and a second air passage. Referring to FIG. 3 and FIG. .

Referring to the respective figures, the gravity switching device (109, 104, 107) includes a pendulum 109, a gate 104 and a rotating shaft 107, wherein the gravity switching device (109, 104, 107) is switched from a first state (Fig. 3) to a second state. (Fig. 4), the pendulum 109 is thus rotated by the change in the direction of gravity applied to the pendulum 109, causing the gate 104 to be switched from a corresponding first state (Fig. 3) to a second state (Fig. 4). The first state of the gate 104 causes the cooling airflow to pass through the first air passage (the upper passage in FIG. 3), and the second state of the gate 104 causes the cooling airflow to pass through the second air passage (the upper passage in FIG. 4).

That is, when the projector device 10 is operated in a first situation, the gravity switching device (109, 104, 107) is in a first state, and the cooling airflow delivered by the nozzle 105 device is blown toward the wick through the first air passage. a first high temperature zone of 102, when the projector device 10 is operated in a second condition, the gravity switching device (109, 104, 107) is in a second state, and the cooling airflow delivered by the nozzle 105 device passes through the second wind The track is blown to a second high temperature zone of the wick 102, wherein the second high temperature zone and the first high temperature zone are respectively located on different sides of the wick.

As described above, the gravity switching device (109, 104, 107) includes a rotating shaft 107 which is rotated about the rotating shaft 107 when the pendulum 109 is rotated about the rotating shaft 107 due to the change in the direction of gravity.

Referring to FIG. 2, the components related to the present invention in the projector device 10 are disclosed in a perspective view. In this state, the projector device 10 is in the second situation (ceiling mode), so the casing surface 101 is in this state. On the ceiling. Comparing Fig. 1 with Fig. 2, in the case of Fig. 1, the gravity switching device (109, 104, 107) is in the first state, and in the case of Fig. 2, the gravity switching device (109, 104, 107) is in the second state.

Referring to FIG. 3, a cooling device having a switchable air duct when the table is placed is shown, and FIG. 3 corresponds to the first case of the projector device 10 of FIG.

As shown in FIG. 4, a cooling device having a switchable air passage when the ceiling mode is shown is shown, and FIG. 4 corresponds to the second case of the projector device 10 of FIG.

Referring to Fig. 5, which is a detailed view of the gravity switching device (109, 104, 107), since the gate 104 has a channel, the channel is aligned with the first air passage in the state of Fig. 3, allowing the cooling airflow to pass, and the second air passage is blocked. In the state of FIG. 4, the channel is aligned with the second air passage to allow the cooling airflow to pass, and the first air passage is blocked. This will achieve the purpose of this creation.

In summary of the above embodiments, according to the present invention, only one set of (upper and lower) air ducts and a single fan are required, which can achieve the purpose of cost creation, and can save cost and achieve better space utilization.

The features and spirit of the present invention are clearly described in the detailed description of the preferred embodiments of the present invention, and are not intended to limit the scope of the invention. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

For example, the design of the aforementioned first air duct and second air duct may be modified into a single mouth air duct design. As long as the gate 104 has a channel, and the projector device is located in the first half of the single mouthpiece air duct in the first case, then the cooling airflow is sent out from the upper half of the mouthpiece air duct, and the projector device is In the second case, the channel is located in the lower half of the single mouthpiece air duct, and then the cooling airflow is sent out from the lower half of the mouthpiece air duct, which can also achieve the purpose of cost creation, which can save cost and can reach Good space utilization.

In this view, another embodiment of the present invention is a cooling device comprising: a fan having an air outlet for sending a cooling airflow; and a mouthpiece having an air inlet connected to the air outlet of the fan, having a fan outlet a gravity switching device comprising a pendulum and a gate, wherein when the gravity switching device is switched from a first state to a second state, the pendulum causes the gate to be corresponding to one The first state is switched to a second state, wherein the first state of the gate causes the cooling airflow to flow through an upper half of the mouthpiece vent, and the second state of the gate causes the cooling airflow to flow through the lower half of the mouthpiece vent.

As described in the previous embodiment, the gravity switching device includes a rotating shaft that rotates around the rotating shaft when the pendulum rotates around the rotating shaft.

If the cooling device of this embodiment is a cooling element, the projector device having the cooling device includes: a wick, wherein when the projector device is placed in a desktop state in a first state, the cooling device is transported a cooling airflow is blown to a first high temperature zone of the wick, and when the projector device is placed on a ceiling in a second state, the cooling airflow delivered by the cooling device is blown to a second high temperature zone of the wick Wherein the second high temperature zone and the first high temperature zone are respectively located on different sides of the wick.

Therefore, the scope of the patented scope of the invention should be construed as broadly construed in the

10. . . Projector

101. . . Shell surface

102. . . Light source

103. . . fan

104. . . Gate

105. . . Mouthpiece

107. . . Rotating shaft

109. . . Pendulum

Figure 1 is a perspective view of the components of the projector associated with the present invention, the projector device being in the first situation (table release mode).

Figure 2 is a perspective view of the components of the projector associated with the present invention, the projector device being in a second device (ceiling mode).

Figure 3 is a diagram showing the cooling device of the switchable duct when the table is placed.

Figure 4 is a diagram showing the cooling device of the switchable air duct in the ceiling mode.

Figure 5 is a diagram showing a gravity type switching device.

104. . . Gate

105. . . Mouthpiece

107. . . Rotating shaft

109. . . Pendulum

Claims (10)

A cooling device capable of switching a duct comprises: a fan having an air outlet for sending a cooling airflow; and a mouthpiece having an air inlet connected to the air outlet of the fan, having an air outlet, the outlet of the nozzle The tuyere has a first air passage and a second air passage; a gravity switching device includes a pendulum and a gate, wherein the gravity switching device switches from a first state to a second state due to the direction of gravity Changing, the pendulum switches the gate from a corresponding first state to a second state, wherein the first state of the gate causes the cooling airflow to pass through the first air duct, and the second state of the gate causes the cooling airflow to pass through the second air duct The direction of movement when the gate is switched is approximately perpendicular to the air outlet of the mouthpiece. The cooling device according to claim 1, wherein the gravity switching device comprises a rotating shaft, and when the pendulum rotates around the rotating shaft, the gate rotates around the rotating shaft, wherein the gate has a channel, when the gate is switched The channel is selectively aligned with the first air passage and the second air passage. The cooling device of claim 1, wherein the first state is in a 180 degree flip relationship with the second state. A projector device having a cooling device capable of switching a duct as claimed in claim 1, comprising: a wick, wherein the cooling device delivers cooling when the projector device is placed in a desktop operation in a first state The airflow is blown to a first high temperature zone of the wick, and when the projector device is placed on a ceiling in a second state, the cooling airflow delivered by the cooling device is blown to a second high temperature zone of the wick, wherein The second high temperature zone and the first high temperature zone are respectively located on different sides of the wick. The projector device of claim 4, wherein the wick is a high pressure mercury wick (mercury lamp). The projector device of claim 4, wherein the first state is in a 180 degree flip relationship with the second state. A projector device comprising: a fan having an air outlet for sending a cooling airflow; a mouthpiece having an air inlet connected to the air outlet of the fan, having an air outlet, the air outlet of the mouthpiece having a first air outlet a gravity channel and a second air channel; a gravity switching device comprising a pendulum and a gate, wherein the gravity switching device changes from a first state to a second state, and the pendulum changes direction The hammer switches the gate from a corresponding first state to a second state, wherein the first state of the gate causes the cooling airflow to pass through the first air duct, and the second state of the gate causes the cooling airflow to pass through the second air duct, wherein the gate is switched The movement direction is about perpendicular to the air outlet of the mouthpiece; a wick, wherein when the projector device operates in a first situation, the gravity switching device is in a first state, and the cooling device is transported Cooling airflow is blown through the first air duct to a first high temperature zone of the wick, and when the projector device operates in a second condition, the gravity switching device is in a second state, the cooling Facing the cooling air flow delivered by a second high temperature region of the blown wick through the second air passage, wherein the first and second high temperature zone a high temperature region are located at different sides of the wick. A cooling device comprising: a fan having an air outlet for delivering a cooling airflow; a mouthpiece having an air inlet connected to the air outlet of the fan and having an air outlet; and a gravity switching device including a pendulum a gate in which the gravity switching device switches from a first state to a second state, and the pendulum switches the gate from a corresponding first state to a second state due to a change in gravity direction. The first state of the gate causes the cooling airflow to flow through an upper half of the mouthpiece outlet, and the second state of the gate causes the cooling airflow to flow through the lower half of the mouthpiece outlet, wherein the direction of movement of the gate is switched The air outlet of the mouthpiece is approximately vertical. The cooling device of claim 8, wherein the gravity switching device comprises a rotating shaft, and when the pendulum rotates around the rotating shaft, the gate rotates around the rotating shaft, wherein the gate has a channel, and when the gate is switched The channel is selectively aligned with the first air passage and the second air passage. A projector device having a cooling device according to claim 8 of the present invention, comprising: a wick, wherein when the projector device is placed in a desktop operation in a first state, the cooling airflow delivered by the cooling device is blown toward the wick a first high temperature zone, when the projector device is placed on a ceiling in a second state, the cooling airflow sent by the cooling device is blown to a second high temperature zone of the wick, wherein the second high temperature zone The first high temperature zone is located on a different side of the wick.