JP6255755B2 - COOLING DEVICE AND COOLING CONTROL METHOD - Google Patents

Description

  The present invention relates to a cooling device.

  The projector projects an image on a screen by irradiating light from a light source to a transmissive liquid crystal device (liquid crystal panel) or DLP (registered trademark) (Digital Light Processing).

  A high-intensity lamp is often used as a light source in order to measure the increase in luminance of an image projected on a screen. High-intensity lamps generate a large amount of heat, so a cooling device is used to protect the lamp, liquid crystal panel, or DLP. When using the cooling device, the number of rotations of the cooling fan is changed according to the altitude of the place where the projector is used.

  When changing the number of rotations of the cooling fan, the user often sets a mode suitable for the altitude on the menu. Projectors with built-in altimeters have also been proposed but are not popular because of increased costs.

  When setting the mode suitable for the altitude on the menu, the user grasps the altitude using the projector and designates an appropriate mode from the menu. Knowing the altitude where the projector is used and specifying an appropriate mode from the menu is a cumbersome task and not easy.

  Therefore, an object of the present invention is to control cooling according to altitude.

The cooling device of one embodiment of the disclosure is
A cooling device,
With fans,
A fan driving circuit for driving the fan,
Obtain the elevation information of the cooling device by sending the identifier to a server that responds to the location information corresponding to the identifier of the cooling device, and send the location information to the server that responds to the elevation information corresponding to the location information. and a control unit for controlling the fan drive circuit based on the altitude information,
A display unit that displays an air cooling mode for controlling the fan drive circuit associated with the elevation information and the elevation information;
When the control unit transmits the identifier to a proxy server and acquires the elevation information from the proxy server, the control unit causes the display unit to display an air cooling mode based on the elevation information acquired from the proxy server .

  According to the disclosed embodiment, cooling control can be performed according to the altitude.

It is a figure which shows one Example of a communication system. It is a figure which shows one Example of a projection apparatus. It is a functional block diagram which shows one Example of a projection apparatus. It is a figure which shows one Example of a fan control table. It is a flowchart which shows one Example of operation | movement of a projection apparatus. It is a figure which shows one Example of a fan control table.

Next, the form for implementing this invention is demonstrated, referring drawings based on the following Examples. Examples described below are merely examples, and embodiments to which the present invention is applied are not limited to the following examples.
In all the drawings for explaining the embodiments, the same reference numerals are used for those having the same function, and repeated explanation is omitted.

<Example>
<Communication system>
FIG. 1 shows an embodiment of a communication system.

  One embodiment of the communication system includes a first server 100, a second server 200, a third server 300, and a projection device 400. The first server 100, the second server 200, the third server 300, and the projection device 400 are connected via the communication network 50.

  The first server 100 is a server such as a DHCP (Dynamic Host Configuration Protocol) server that automatically assigns an identifier such as an IP address. The first server 100 assigns an IP address to the projection apparatus 400 in response to an IP address assignment request from the projection apparatus 400.

  The second server 200 responds with location information corresponding to the IP address using the IP address as a parameter. One example of the second server 200 is an IP Location Finder. The IP Location Finder specifies location information such as an address from the IP address.

  The third server 300 returns altitude information corresponding to the position information using the position information as a parameter.

  The projection device 400 modulates the light beam emitted from the light source according to the image information, and projects the enlarged light beam. The projection device 400 includes a cooling device 500.

  The cooling device 500 acquires an IP address by communicating with the first server 100. The cooling device 500 requests the first server 100 to assign an IP address, and acquires an IP address transmitted from the first server 100.

  The cooling device 500 transmits an IP address to the second server 200 and acquires position information transmitted from the second server 200. The cooling device 500 transmits the position information acquired from the second server 200 to the third server 300, and acquires the altitude information transmitted from the second server 200.

  The cooling device 500 controls the cooling fan based on the altitude information acquired from the third server 300. One embodiment of the cooling device 500 controls the rotational speed of the cooling fan.

  In one embodiment of the communication system, a projection device (projector) is shown as an example of a device on which the cooling device 500 is mounted, but the present invention can also be applied to an information processing device having a heat generating member such as a PC.

<Projector 400>
FIG. 2 shows an embodiment of the projection apparatus 400.

  The projection apparatus 400 includes a control unit 402, an operation panel 404, a scaler 406, a projection image creation memory 408, a projection light conversion device 410, a lens 412, an interface (I / F) 414, and a fan drive circuit 416. And a first fan 418, a second fan 420, and a third fan 422. The controller 402, the interface (I / F) 414, the fan drive circuit 416, the first fan 418, the second fan 420, and the third fan 422 constitute the cooling device 500. FIG. 2 shows three fans, ie, a first fan 418, a second fan 420, and a third fan 422. However, the number of fans may be 1-2, or four or more. There may be.

  The control unit 402 executes control for communicating with the first server 100 via the I / F 414 and executes control for acquiring an IP address. The control unit 402 transmits the IP address acquired from the first server 100 to the second server 200 from the I / F 414, and acquires the position information transmitted as a response to the IP address from the second server 200. Execute control. The control unit 402 transmits the position information acquired from the second server 200 to the third server 300, and acquires the altitude information transmitted as a response to the position information from the third server 300.

  The control unit 402 controls the number of rotations of the cooling fans (first fan 418, second fan 420, and third fan 422) based on the altitude information acquired from the third server 300.

  The operation panel 404 is connected to the control unit 402. The operation panel 404 is a panel for performing activation / adjustment operations of the projection apparatus 400. The operation panel 404 includes operation switches such as a start switch and an image / sound adjustment switch. During projection by the projection apparatus 400, the image quality, volume, and the like can be adjusted by operating an adjustment switch or the like of the operation panel 404.

  Scaler 406 is connected to control unit 402. The scaler 406 executes processing for increasing or decreasing the resolution of the image input to the projection apparatus 400. The scaler 406 controls the optical image formed by the projection light conversion device 410. For example, display control of an image formed by the projection light conversion device 410 is performed based on an image quality adjustment signal by operating an image quality adjustment button on the operation panel 404 or an input image.

  The projection image creation memory 408 is connected to the scaler 406. The projection image creation memory 408 stores an image that has been processed to increase or decrease the resolution by the scaler 406.

  The projection light conversion device 410 is connected to the projection image creation memory 408. The projection light conversion device 410 modulates the light beam emitted from the light source according to image information to form an optical image. The projection light conversion device 410 forms a projection image on the screen via the lens 412.

  The lens 412 enlarges and projects an optical image formed by modulating the light beam emitted from the light source by the projection light conversion device 410 according to the image information. That is, the lens 412 has a function as a projection optical system. The lens 412 is configured as a combined lens in which a plurality of lenses are housed inside a cylindrical body.

  The I / F 414 is connected to the control unit 402. The I / F 414 is an interface between the projection apparatus 400 and the communication network 50. The I / F 414 may be connected to the communication network 50 wirelessly or may be connected to the communication network 50 by wire.

  Fan drive circuit 416 is connected to control unit 402. The fan drive circuit 416 drives the first fan 418, the second fan 420, and the third fan 422 under the control of the control unit 402.

  The first fan 418, the second fan 420, and the third fan 422 are connected to the fan drive circuit 416. The first fan 418, the second fan 420, and the third fan 422 are fans for cooling the projection device 400. Specifically, the first fan 418, the second fan 420, and the third fan 422 cool an optical apparatus such as the projection light conversion device 410. In addition, the first fan 418, the second fan 420, and the third fan 422 cool the power supply device (not shown).

  The projection apparatus 400 is provided with a temperature detection sensor (not shown) including a sensor such as a thermistor in order to detect an overheat state of an optical apparatus such as the projection light conversion device 410 or a power supply apparatus. Specifically, a temperature detection sensor for detecting the temperature of the optical device is provided on the downstream side of the optical device in the flow of cooling air, and detects the temperature of the air that has cooled the optical device. On the other hand, the temperature detection sensor for detecting the temperature of the light source device is a portion of a light guide (not shown) in which the light source device is accommodated, and in the flow of air from the light source device to the exhaust fan (not shown), the light source device Similarly, the temperature of the air that has cooled the optical components inside the light source device and the light guide is detected.

  The temperature detection sensor is not limited to the above-described example, and an appropriate number of temperature detection sensors can also be provided in the vicinity of an optical component having a problem when it is overheated inside the projection apparatus 400, or in a position where it is likely to overheat.

<Function of Projecting Device 400>
FIG. 3 shows an embodiment of the projection apparatus 400.

  The functions represented by the functional block diagram of FIG. 3 are mainly executed by the control unit 402. That is, the control unit 402 functions as an IP address acquisition unit 4022, a position information acquisition unit 4024, an altitude information acquisition unit 4026, and a fan control unit 4028. The control unit 402 has a fan control table 4030.

  The control unit 402 may be realized by a CPU. The control unit 402 may be realized by a microcontroller unit.

  The functions of the IP address acquisition unit 4022, the position information acquisition unit 4024, the altitude information acquisition unit 4026, and the fan control unit 4028 are executed by the microcontroller unit according to the application (firmware) stored in the control unit 402. It is preferable.

  Further, the microcontroller unit 102 executes functions as an IP address acquisition unit 4022, a position information acquisition unit 4024, an altitude information acquisition unit 4026, and a fan control unit 4028 according to an application stored in a storage unit (not shown). May be.

  The CPU functions as the IP address acquisition unit 4022. The IP address acquisition unit 4022 is connected to the I / F 414. The IP address acquisition unit 4022 communicates with the first server 100 via the I / F 414 to acquire an IP address. The IP address acquisition unit 4022 inputs the IP address to the position information acquisition unit 4024.

  The CPU functions as the position information acquisition unit 4024. The position information acquisition unit 4024 is connected to the I / F 414 and the IP address acquisition unit 4022. The location information acquisition unit 4024 transmits the IP address acquired from the IP address acquisition unit 4022 from the I / F 414 to the second server 200, and acquires the location information transmitted as a response to the IP address. The position information acquisition unit 4024 inputs the position information to the elevation information acquisition unit 4026.

  The CPU functions as the altitude information acquisition unit 4026. The elevation information acquisition unit 4026 is connected to the I / F 414 and the position information acquisition unit 4024. The elevation information acquisition unit 4026 transmits the location information acquired from the location information acquisition unit 4024 from the I / F 414 to the third server 300, and acquires the elevation information transmitted as a response to the location information. The elevation information acquisition unit 4026 inputs the elevation information to the fan control unit 4028.

  The CPU functions as a fan control unit 4028. The fan control unit 4028 is connected to the altitude information acquisition unit 4026. The fan control unit 4028 controls the fan based on the altitude information from the altitude information acquisition unit 4026. Specifically, the fan control unit 4028 refers to the fan control table 4030 and sets the rotation speed of the fan corresponding to the altitude information.

  FIG. 4 shows an example of the fan control table 4030. The fan control table 4030 is connected to the fan control unit 4028.

  The fan control table 4030 associates the altitude with the rotation speed of the fan. As the altitude changes from a low value to a high value, the rotation speed of the fan is matched so as to change from low to high. This is because the air becomes thinner as the altitude increases, so that the amount of air intake and exhaust by the fan cannot be sufficiently secured, and the interior of the projection device 400 cannot be sufficiently cooled. Therefore, as the altitude rises, the rotational speed of the fan is increased.

<Operation of Projecting Device 400>
FIG. 5 shows an example of the operation of the projection apparatus 400.

  FIG. 5 mainly shows the operation of the cooling device 500 of the projection device 400. In the example shown in FIG. 5, the projection apparatus 400 has two air cooling modes, ie, a high altitude mode and a standard mode, as the air cooling mode.

  FIG. 6 shows an embodiment of the fan control table.

  The high altitude mode is set when the altitude of the projection apparatus 400 is high, and the standard mode is set when the altitude mode does not correspond to the high altitude mode, that is, when the altitude is low. In one embodiment of the projection apparatus 400, the altitude mode is set when the altitude is 1500 meters or more, and the standard mode is set when the altitude is less than 1500 meters. 1500 meters is an example and can be set as appropriate. The high altitude mode and the standard mode are examples, and three or more air cooling modes may be provided.

  In step S502, the projection apparatus 400 acquires an IP address from the first server 100. That is, the IP address acquisition unit 4022 requests the IP address from the first server 100 and acquires the IP address from the first server 100.

  In step S504, the projection apparatus 400 transmits an IP address to the second server 200, and acquires position information transmitted as a response. That is, the position information acquisition unit 4024 transmits an IP address to the second server 200 and acquires position information from the second server 200.

  In step S506, the projection apparatus 400 transmits position information to the third server 300, and acquires altitude information transmitted as a response. That is, the elevation information acquisition unit 4026 transmits the position information to the third server 300 and acquires the elevation information from the third server 300.

  In step S508, the projection apparatus 400 determines whether the altitude is 1500 meters or more. That is, the fan control unit 4028 determines whether or not the altitude information from the altitude information acquisition unit 4026 indicates 1500 meters or more.

  In step S510, when the altitude is 1500 meters or more, the projection apparatus 400 sets the first candidate air cooling mode to the high altitude mode. That is, when the altitude is 1500 meters or more, the fan control unit 4028 sets the first candidate air cooling mode as the high altitude mode.

  In step S512, when the altitude is less than 1500 meters, the projection apparatus 400 sets the first candidate air cooling mode as the standard mode. That is, when the altitude is less than 1500 meters, the fan control unit 4028 sets the first candidate air cooling mode as the standard mode.

  In step S514, the projection apparatus 400 displays the first candidate air cooling mode and altitude, and prompts for confirmation. That is, the fan control unit 4028 displays the first candidate air-cooling mode and altitude on the operation panel 404 to prompt confirmation.

  It is also possible to automatically set the air cooling mode based on the altitude information. By displaying the air cooling mode and altitude of the first candidate and prompting confirmation, for example, when the same IP address is transmitted and the same altitude information is acquired using a proxy server in a company etc., the air cooling mode is set. It can be confirmed to set.

  In step S516, the projection apparatus 400 determines whether a confirmation input has been received. That is, the fan control unit 4028 determines whether or not there is a confirmation input.

  In step S518, when it is determined that the confirmation input has been received, the projection apparatus 400 sets the first candidate air cooling mode. In other words, when it is determined that there is a confirmation input, the fan control unit 4028 sets the first candidate air cooling mode in the fan drive circuit 416.

  In step S520, when determining that there is no confirmation input, the projection apparatus 400 sets an air cooling mode other than the first candidate. That is, when it is determined that there is no confirmation input, the fan control unit 4028 sets an air cooling mode other than the first candidate in the fan drive circuit 416.

  In step S522, the projection apparatus 400 drives the fan in the air cooling mode set in step S518 or step S520. That is, the fan drive circuit 416 controls the first fan 418, the second fan 420, and the third fan 422 in the air cooling mode set by the fan control unit 4028.

  According to one embodiment of the projection device 400, the altitude information can be acquired based on the IP address, and the rotational speed of the cooling device fan can be controlled. For this reason, it is possible to appropriately control the rotational speed of the fan without allowing the user to grasp the altitude.

  Moreover, when controlling the rotation speed of a fan according to an altitude, it can set to an appropriate rotation speed with minimum operation. That is, a change to an appropriate air cooling mode is prompted according to the altitude. The user can change the air cooling mode by performing an operation according to whether or not to change to an appropriate air cooling mode.

  Although the present invention has been described with reference to specific embodiments and modifications, each embodiment and modification is merely an example, and those skilled in the art will recognize various modifications, modifications, alternatives, substitutions, and the like. Will understand. For convenience of explanation, an apparatus according to an embodiment of the present invention has been described using a functional block diagram, but such an apparatus may be implemented in hardware, software, or a combination thereof. The present invention is not limited to the above-described embodiments, and various variations, modifications, alternatives, substitutions, and the like are included without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 50 Communication network 100 1st server 200 2nd server 300 3rd server 400 Projection apparatus 402 Control part 404 Operation panel 406 Scaler 408 Projection image creation memory 410 Projection light conversion device 412 Lens 414 I / F
416 Fan drive circuit 418 First fan 420 First fan 422 First fan 500 Cooling device 4022 IP address acquisition unit 4024 Position information acquisition unit 4026 Altitude information acquisition unit 4028 Fan control unit 4030 Fan control table

JP 2004-157356 A

Claims (7)

A cooling device,
With fans,
A fan driving circuit for driving the fan,
Obtain the elevation information of the cooling device by sending the identifier to a server that responds to the location information corresponding to the identifier of the cooling device, and send the location information to the server that responds to the elevation information corresponding to the location information. and a control unit for controlling the fan drive circuit based on the altitude information,
A display unit that displays an air cooling mode for controlling the fan drive circuit associated with the elevation information and the elevation information;
The said control part is a cooling device which displays the air cooling mode based on the said elevation information acquired from the said proxy server on the said display part, when the said identifier is transmitted to a proxy server and the said elevation information is acquired from the said proxy server .   The cooling device according to claim 1, wherein the control unit controls the rotational speed of the fan. The control unit acquires position information of the cooling device based on an identifier of the cooling device,
The cooling device according to claim 1, wherein the altitude information is acquired based on the position information.   The said control part is a cooling device of any one of Claim 1 thru | or 3 which acquires the identifier of the said cooling device from the 1st server which allocates an identifier.   The cooling device according to any one of claims 1 to 4, wherein the control unit acquires position information of the cooling device from a second server that responds with position information corresponding to an identifier.   The cooling device according to any one of claims 1 to 5, wherein the control unit acquires elevation information of the cooling device from a third server that responds to elevation information corresponding to position information. A cooling control method in a cooling device,
Obtain the elevation information of the cooling device by sending the identifier to a server that responds to the location information corresponding to the identifier of the cooling device, and send the location information to the server that responds to the elevation information corresponding to the location information. And the acquisition procedure to
And a control step of controlling the fan driving circuit for driving the fan based on the altitude information,
A display procedure for displaying an air cooling mode for controlling the fan drive circuit associated with the elevation information and the elevation information;
The control procedure includes a procedure for displaying the air cooling mode based on the elevation information acquired from the proxy server by the display procedure when the identifier is transmitted to a proxy server and the elevation information is acquired from the proxy server. Cooling control method.

Images