CN205453263U - Projector - Google Patents

Abstract

The utility model discloses a projector, which belongs to the technical field of projector power supply, and comprises an external power supply module connected with an external power supply to supply power for the projector, and further comprising: a power supply management module and a rechargeable battery pack, The power management module is respectively connected to the external power supply module and the rechargeable battery pack, and the rechargeable battery pack is connected to the external power supply module; wherein, the power management module is used to connect the external power supply module When the external power supply is used, control the external power supply module to supply power to the projector and charge the rechargeable battery pack; when the external power supply module is not connected to the external power supply, control the rechargeable battery pack to charge the rechargeable battery pack to supply power to the projector. The utility model solves the problem that the projector needs mains power supply and is inconvenient to carry and the problem that the projector cannot work when the power is cut off.

Description

a projector

technical field

The utility model relates to the technical field of projector power supply, in particular to a projector.

Background technique

In the prior art, the power supply mode of the projector is mostly wired power supply, which is generally provided with a plug to connect to the mains. After the projector is connected to the mains, the external power module in the projector converts the 220V mains to work for the projector. voltage. In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: because the projector powered by mains power is inconvenient to carry, and many portable projectors need to be used in the field without mains power, or Sometimes the power of the projector is cut off during use, and these situations make it difficult for the projector to work.

Utility model content

In view of this, an embodiment of the present invention provides a projector to solve the problem that the projector is not portable due to wired connection and cannot work when the power is off.

The embodiment of the utility model provides a projector, including an external power supply module, the external power supply module is connected with the external power supply, and supplies power for the projector, and also includes:

A power management module and a rechargeable battery pack, the power management module is respectively connected to the external power supply module and the rechargeable battery pack, and the rechargeable battery pack is connected to the external power supply module;

Wherein, the power management module is configured to control the external power module to supply power to the projector and charge the rechargeable battery pack when the external power module is connected to the external power supply. When the module is not connected to the external power supply, the rechargeable battery pack is controlled to supply power to the projector.

Optionally, the projector further includes: a temperature detector, which is connected to the power management module and used to detect the temperature inside the projector, and when the temperature is greater than the temperature threshold, send an overheating A signal is sent to the power management module, and when the temperature is lower than a temperature threshold, a normal signal is sent to the power management module.

Further, the power management module is further configured to, when the projector stops working, control the rechargeable battery pack to supply power to the heat sink of the projector for heat dissipation when the overheating signal is received, and Stop supplying power to the cooling device when the normal signal is received.

Optionally, the projector further includes: a power detector and an indicator light; the power detector is connected to the rechargeable battery pack and the indicator light respectively, and the power detector is used to detect When the power is full, the indicator light is controlled to light up the first color, when the power is lower than the power threshold, the light is controlled to light up the second color, when the power is between the power threshold and When the grid is full, control the indicator light to light up a third color.

Optionally, the rechargeable battery pack is a detachable rechargeable battery pack.

Further, the projector further includes: a first housing and a second housing, the first housing is used to fix the projection module, the external power supply module and the power management module of the projector, the second The casing is used to fix the rechargeable battery pack.

Based on the above, the first housing and the second housing are snap-connected to each other.

Further, the first housing and the second housing are separately provided with a socket assembly and a plug assembly, and the plug assembly is connected with the rechargeable battery pack, and the first housing and the second housing When they are locked together, the plug assembly and the socket assembly are in contact, the rechargeable battery pack supplies power to the projector or the external power supply module charges the rechargeable battery pack.

Optionally, the rechargeable battery pack is a nickel-cadmium battery, a nickel-hydrogen battery or a lithium-ion battery.

Further, the projection module of the projector includes a light supply source, the light supply source is connected to the processor of the projector, and is used to provide the projection module with a projection light under the control of the processor. The required light; the heat dissipation device of the projector is set close to the light supply source.

In a projector provided by an embodiment of the present invention, by adding a power management module and a rechargeable battery pack, the power manager identifies whether the projector is connected to an external power supply, and if connected to an external power supply, controls the external power supply module to supply power to the components of the projector. And control the external power supply module to supply power for the rechargeable battery pack until it is fully charged. If no external power source is connected, the control rechargeable battery pack supplies power to the various components of the projector. This solution solves the problem that the projector needs a wired connection when it is connected to an external power source and is inconvenient to carry; at the same time, it also enables the projector to work normally through the power supply of a rechargeable battery pack when there is no external power source available.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is a structural block diagram of a projector provided by Embodiment 1 of the present invention;

Fig. 2 is a structural block diagram of a projector provided by Embodiment 2 of the present invention;

FIG. 3 is a structural block diagram of a projector provided by Embodiment 3 of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail. It can be understood that the specific embodiments described here are only used to explain the utility model, rather than limit the utility model. In addition, it should be noted that, for the convenience of description, only the part related to the present utility model is shown in the drawings but not the whole content.

Embodiment one

Fig. 1 is a structural block diagram of a projector provided by Embodiment 1 of the present utility model. Embodiment 1 of the present utility model provides a projector, including an external power supply module 1, which is connected with an external power supply to supply power for the projector ,Also includes:

The power management module 2 and the rechargeable battery pack 3, the power management module 2 is connected to the external power supply module 1 and the rechargeable battery pack 3 respectively, and the rechargeable battery pack 3 is connected to the external power supply module 1;

Among them, the power management module 2 is used to control the external power module 1 to supply power to the projector and to charge the rechargeable battery pack 3 when the external power module 1 is connected to an external power supply, and to control the charging when the external power module 1 is not connected to an external power supply. The battery pack 3 powers the projector.

Most of the existing projectors work by connecting to an external power supply, usually connected to a 220V mains power supply through an external plug. When the projector is used outdoors, a very long power connection cable is required, which is inconvenient to carry. Moreover, some projectors are to be used in some activities in the field, and the external power supply is not easy to obtain.

In this embodiment, a rechargeable battery pack 3 is added to the projector, and the projector can complete the projection work by using its own energy storage component, the rechargeable battery pack 3 , when there is no commercial power to connect to. When using the projector for short periods of time at certain events, you do not need to carry a power cord. This solution is preferably applied to a micro projector, for example, a digital light processing (Digital Light Processing, DLP) projector.

A power management module 2 is added to the projector to identify whether the projector is connected to an external power supply. If the external power supply is plugged in, the external power supply module 1 is controlled to supply power for the projector while charging the rechargeable battery pack 3 until the rechargeable battery pack 3 is fully charged; if the projector is not plugged in the external power supply, then directly control The rechargeable battery pack 3 supplies power for the projector.

If the projector is not in working condition, when the projector is plugged into an external power source, the external power supply module 1 only charges the rechargeable battery pack 3 directly.

With reference to Fig. 1, in order to facilitate the user to know in time the amount of power contained in the rechargeable battery pack 3, optionally, the projector also includes a power detector 4 and an indicator light 5, the power detector 4 is arranged inside the projector, and the indicator light 5 can be It is arranged on the shell 6 of the projector, which is convenient for users to observe.

The power detector 4 is connected with the rechargeable battery pack 3 and the indicator light 5 respectively, and the power detector 4 is used to detect the contained power of the rechargeable battery pack 3. When the power is full, the control indicator light 5 lights the first color, and when the power is lower than When the power threshold is reached, the control indicator light 5 lights up in a second color, and when the power is between the power threshold and full, the control indicator light 5 lights up in a third color. Illustratively, when the contained electric quantity of rechargeable battery pack 3 is full, the power detector 4 outputs a full scale signal to indicator light 5, and the control indicator light 5 lights up green; when the contained electric quantity of rechargeable battery pack 3 is lower than full 10% of the battery, the battery detector 4 outputs a low battery signal to the indicator light 5, and the control indicator light 5 lights up red; When the power detector 4 outputs an intermediate signal to the indicator light 5, the control indicator light turns yellow.

If the user needs to charge the projector before going out, when the indicator light 5 lights green, it will be known that the rechargeable battery pack 3 of the projector is fully charged.

Preferably, the rechargeable battery pack 3 is a nickel-cadmium battery, a nickel-hydrogen battery or a lithium-ion battery.

Nickel-cadmium batteries are very strong and cheap; nickel-metal hydride batteries have a large power storage capacity, are lightweight and have a long service life; lithium-ion batteries have a short charging time, large capacity and a long service life. Nickel-cadmium batteries, nickel-metal hydride batteries and lithium-ion batteries are all batteries that can be used as a reference for the rechargeable battery pack 3 .

In the projector provided by Embodiment 1 of the present invention, by adding a power management module and a rechargeable battery pack, the power manager identifies whether the projector is connected to an external power supply, and if connected to an external power supply, controls the external power supply module to supply power to the components of the projector , and control the external power module to supply power to the rechargeable battery pack until it is fully charged. If no external power source is connected, the control rechargeable battery pack supplies power to the various components of the projector. This solution solves the problem that the projector needs a wired connection when it is connected to an external power source and is inconvenient to carry; at the same time, it also enables the projector to work normally through the power supply of a rechargeable battery pack when there is no external power source available. In addition, an indicator light can be arranged on the casing of the projector, so that the user can know the power condition of the rechargeable battery pack conveniently.

Embodiment two

FIG. 2 is a structural block diagram of a projector provided by Embodiment 2 of the present invention. Embodiment 2 of the present utility model provides a projector. Referring to FIG. 2 , on the basis of the projection structure of the above embodiment, the projector in this embodiment also includes: a temperature detector 7, a temperature detector 7 and a power management module 2 Connected to detect the temperature inside the projector, when the temperature is greater than the temperature threshold, send an overheating signal to the power management module 2, and when the temperature is lower than the temperature threshold, send a normal signal to the power management module 2;

Correspondingly, the power management module 2 is also used to, when the projector stops working, control the rechargeable battery pack 3 to supply power to the heat sink 8 of the projector to dissipate heat when receiving an overheating signal, and stop the power supply when receiving a normal signal The cooling device 8 supplies power.

The heat dissipation performance of the projector has a direct impact on the service life of the projector. Since the projector is a high-end optical-mechanical-electrical integration product, the internal components are very sensitive to temperature. In addition to the complexity of the internal structure, its own requirements for temperature relatively harsh.

A temperature detector 7 is installed in the projector to detect the temperature inside the projector, and when the temperature inside the projector is greater than the temperature threshold, an overheating signal is sent to the power management module 2, and the power management module 2 controls the external power module 1 or the rechargeable battery pack 3 Increase the intensity of power supply to the cooling device 8 to increase the intensity of heat dissipation. When the temperature inside the projector is lower than the temperature threshold, a normal signal is sent to the power management module 2, and the power management module 2 controls the external power module 1 or the rechargeable battery pack 3 to supply power to the cooling device 8 normally. Exemplarily, for a DLP projector, the temperature threshold may be set to 40 degrees.

It should be noted that after the projector stops working, if the projector is connected to an external power supply, the power management module 2 will preferentially control the external power supply module 1 to supply power to the cooling device 8; if the projector is not connected to an external power supply, the power management module 2 will control The rechargeable battery pack 3 supplies power to the cooling device 8 .

When the user finishes using the projector, he generally pulls out the external power cord when turning off the projector. But sometimes the temperature inside the projector is still high. When the external power cord is pulled out, there is no power to support the cooling device 8 to continue to dissipate heat for the projector. Over time, the lifespan of the projector will be shortened. Therefore, it is generally recommended to unplug the external power cord after a period of time after using the projector, but many users just unplug the power cord after use.

The built-in rechargeable battery pack 3 in this embodiment can solve the problem of heat dissipation after the projector stops working. When the projector stops working, even if the external power cord of the projector is pulled out, the power management module 2 can still control the rechargeable battery pack 3 to provide power for the cooling device 8 to ensure timely heat dissipation inside the projector.

Referring to Fig. 2, the projection module 9 of the projector includes a light source 91, the light source 91 is connected with the processor 10 of the projector, and is used to provide the projection module 9 with the light required for projection under the control of the processor 10. ; The heat sink 8 of the projector is set close to the light source 91 .

The heat dissipation of the projector is mainly aimed at the projection module 9 of the projector, and the main component of heat generation is the light supply source 91 in the projection module 9 . In order to facilitate the heat dissipation of the light supply source 91 , the heat dissipation device 8 is arranged close to the light supply source 91 .

Optionally, the light source is an LED light source.

Compared with other light sources, LED light sources are more energy-saving and environmentally friendly, with low driving voltage, safety and stability, and long service life. The LED light source can control the lighting according to the required lighting brightness, which is more suitable for the adjustable brightness of the projector in this solution.

This solution is based on the structure of the projector in the above-mentioned embodiment, and a temperature detector is added to monitor the temperature in the projector in real time, so as to facilitate the heat dissipation of the projector by the cooling device, and because the rechargeable battery pack is added, after the projector stops working, If the temperature is too high, the power management module can directly control the rechargeable battery pack to supply power to the cooling device, prolonging the life of the projector.

Embodiment Three

FIG. 3 is a structural block diagram of a projector provided by Embodiment 3 of the present invention. In this solution, on the basis of the structures of the projectors in the above embodiments, the housing is further provided.

In order to make charging more convenient, the rechargeable battery pack 3 can be set as a detachable rechargeable battery pack. Some projectors are not easy to move due to their size, and the user can disassemble the rechargeable battery pack 3 and connect it to an external socket for charging.

Optionally, referring to FIG. 3 , the housing may include a first housing 61 and a second housing 62. The first housing 61 is used to fix the projection module 9, the external power supply module 1 and the power management module 2 of the projector. The second casing 62 is used to fix the rechargeable battery pack 3 .

The second housing 62 is used to fix the rechargeable battery pack 3 , preferably, referring to FIG. 3 , it can fix the power detector 4 and the indicator light 5 at the same time. When the rechargeable battery pack 3 is disassembled for charging, the power detector 4 and the indicator light 5 can remind the user of the charging situation of the rechargeable battery pack 3 .

The first housing 61 is mainly used for fixing the projection module 9 , the external power supply module 1 and the power management module 2 of the projector. Similarly, referring to FIG. 3 , a temperature monitor 7 , a cooling device 8 and a processor 10 etc. are also fixed, which are mainly components required for the projector to complete the projection work.

The first shell 61 and the second shell 62 can be connected in various ways, for example, by snapping each other (not shown in the figure).

The first housing 61 and the second housing 62 are respectively provided with a hook and a buckle, and the hook and the buckle are locked together to ensure the connection between the first housing 61 and the second housing 62 when the projector is working, and can The disassembly of the first casing 61 and the second casing 62 is facilitated.

The first housing 61 and the second housing 62 are respectively provided with a socket assembly and a plug assembly (not shown in the figure), the plug assembly is connected with the rechargeable battery pack 3, and the first housing 61 and the second housing 62 are locked together. When connected, the plug assembly and the socket assembly are connected, and the rechargeable battery pack 3 supplies power to the projector or the external power module 1 charges the rechargeable battery pack 3 .

The plug assembly is arranged on the second casing 62, which is convenient for the user to disassemble the second casing 62 and insert it into a common power supply socket, such as a commercial power socket or a USB power supply socket, for charging separately. When the first housing 61 and the second housing 62 are locked and connected, the plug assembly and the socket assembly are electrically connected, so that the rechargeable battery pack 3 can be connected with the various components of the projector to provide power for the projector, and can be powered from an external power supply module. 1 to obtain electrical energy.

This solution divides the shell of the projector in the utility model into a first casing and a second casing, and the second casing fixes the rechargeable battery pack, which is convenient for the user to disassemble the rechargeable battery pack from the projector and charge it separately. If there are multiple same projectors, the second casing can be exchanged for use, which is convenient for the projectors to work.

Note that the above are only preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the utility model is not limited to the specific embodiments described here, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the utility model. Therefore, although the utility model has been described in detail through the above embodiments, the utility model is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the utility model. The scope of the present invention is determined by the appended claims.

Claims (10)

1. a projector, including external power module, described external power module is connected with external power source, powers for described projector, it is characterised in that also include:

Power management module and rechargeable battery set, described power management module is connected with described external power module and described rechargeable battery set respectively, and described rechargeable battery set is connected with described external power module；

Wherein, described power management module, for when described external power module connects described external power source, controlling described external power module is that described projector is powered, and be the charging of described rechargeable battery set, when described external power module is not connected with described external power source, controlling described rechargeable battery set is that described projector is powered.

Projector the most according to claim 1, it is characterised in that:

Also include: temperature detector, described temperature detector is connected with described power management module, for detecting the temperature within described projector, when described temperature is more than temperature threshold, it is transmitted across thermal signal to described power management module, when described temperature is less than temperature threshold, send normal signal to described power management module.

Projector the most according to claim 2, it is characterised in that:

Described power management module is additionally operable to, when described projector quits work, control the heat abstractor that described rechargeable battery set is described projector to power to dispel the heat when receiving described heat alarm, and stop when receiving described normal signal powering for described heat abstractor.

Projector the most according to claim 1, it is characterised in that also include:

Coulometric detector and display lamp；

Described coulometric detector is connected with described rechargeable battery set and described display lamp respectively, described coulometric detector is used for detecting electricity contained by described rechargeable battery set, control described display lamp when the full lattice of described electricity and light the first color, when described electricity is less than power threshold, control described display lamp and light the second color, when described electricity is between described power threshold and described full lattice, controls described display lamp and light the 3rd color.

Projector the most according to claim 1, it is characterised in that:

Described rechargeable battery set is detachable rechargeable battery group.

Projector the most according to claim 5, it is characterised in that also include:

First housing and the second housing, described first housing is for fixing the projection module of described projector, external power module and power management module, and described second housing is used for fixing described rechargeable battery set.

Projector the most according to claim 6, it is characterised in that:

Described first housing and described second housing mutually block knot and connect.

Projector the most according to claim 7, it is characterised in that:

Jack assemblies and plug-assembly is set up separately on described first housing and described second housing, described plug-assembly is connected with described rechargeable battery set, when described first housing and described second housing mutually block knot connection, described plug-assembly and described jack assemblies connect, and described rechargeable battery set is powered to described projector or described external power module is charged to described rechargeable battery set.

Projector the most according to claim 1, it is characterised in that:

Described rechargeable battery set is nickel-cadmium cell, Ni-MH battery or lithium ion battery.

Projector the most according to claim 1, it is characterised in that:

The projection module of described projector includes for radiant, described is connected with the processor of described projector for radiant, for providing the light required for projecting for described projection module under the control of described processor；

The heat abstractor of described projector is pressed close to described for radiant setting.