CN2888492Y - A low-noise projector - Google Patents
A low-noise projector Download PDFInfo
- Publication number
- CN2888492Y CN2888492Y CN 200620039206 CN200620039206U CN2888492Y CN 2888492 Y CN2888492 Y CN 2888492Y CN 200620039206 CN200620039206 CN 200620039206 CN 200620039206 U CN200620039206 U CN 200620039206U CN 2888492 Y CN2888492 Y CN 2888492Y
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- Prior art keywords
- projector
- model
- noise
- low noise
- utility
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Abstract
The utility model provides a low noise projector, comprising an up shell, a down shell and an optical engine installed in the shell, circuit boards, a lamp lighter, a light source, a power supply and a corresponding heat agency which comprisesa plurality of different sizes of fans, the model is characterized in that the inner surface of the two shells is coated with a layer of muffler materials. Since the inner surface of the shells is coated with a layer of muffler materials, the utility model can absorb the most noise within the projector, greatly reduce the acoustic environment pollution surrounding the projector, and purify the working environment, thereby enhancing the utilization efficiency of the projector.
Description
Technical field
The utility model relates to a kind of projector, relates in particular to a kind of low noise projecting camera.
Background technology
Projector is widely used in education, commerce and the family.Common projector generally comprises a housing and is arranged on the interior photo engine of housing, circuit board, light source and corresponding cooling mechanism.According to what of camera lens used in the photo engine, projector can be divided into single-lens projector and tri-lens projector again.Generally all be earlier the white light that light source produced to be isolated red, green, blue three coloured light in design, by three liquid crystal light valves or DMD device three coloured light are modulated respectively, three coloured light after the modulation are handled with diverse ways according to different mining single-lens or the three-lens design.In single-lens projector, be with closing that color component is synthesized and by the single lens projection imaging with three coloured light.In tri-lens projector, be that three coloured light are projected to imaging on the same screen via three different camera lenses respectively.Wherein single-lens projector has the advantages that volume is little, be convenient for carrying, but its back focal length is longer, and the bore of camera lens requires bigger, and optical modules such as employed camera lens and spectroscope are very high to the requirement of quality, precision, cause cost higher.And tri-lens projector can project big picture in than short distance, and picture brightness and contrast all improve a lot than single-lens projector.
In the course of the work, can produce a large amount of heat in the projector, heat is mainly derived from bulb, the energy of bulb is except that a part becomes luminous energy, major part is distributed in projector with the form of heat energy, and in addition, the optical element in the photo engine also can absorb a part of impervious light and generate heat.These heats such as untimely leaving can have a strong impact on the operate as normal and the serviceable life of projector.Therefore in projector, all be provided with cooling mechanism, be used for the heat that the course of work produces is in time left, this cooling mechanism generally comprises many fans that vary in size and corresponding wind channels.Cooling mechanism produces another problem again, i.e. noise when solving heat dissipation problem, the eddy current that this noise source produces during through the air channel in the rotation of fan and airflow, especially at the air outlet place, can send sharp-pointed noise, and noise can strengthen along with the raising of rotation speed of the fan.The noise of projector mainly results from casing inside and mainly is delivered to the external world by casing, and environment for use is caused sound pollution.Generally all there is either large or small noise in the projector of prior art owing to its structural reason.
Summary of the invention
The purpose of this utility model provides a kind of low noise projecting camera exactly in order to address the above problem.
The purpose of this utility model is achieved in that a kind of low noise projecting camera, comprise upper shell, lower house and be arranged on the interior photo engine of housing, circuit board, apparatus for lighting up, light source, power supply and corresponding cooling mechanism, cooling mechanism comprises many fans that vary in size, be characterized in that the inside surface of described upper shell and lower house is coated with a deadener layer respectively.
Described deadener layer is made of acrylic acid damping coating or similar coating with noise elimination effect.
The utility model low noise projecting camera since thereon the inside surface of housing and lower house be coated with a deadener layer respectively, can sponge the most of noise that produces in the projector, the sound pollution that when greatly reducing projector's work surrounding environment is produced, purify working environment, thereby improved the result of use of projector.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model low noise projecting camera;
Fig. 2 is the structural representation of the upper shell of the utility model low noise projecting camera;
Fig. 3 is the structural representation of the lower house of the utility model low noise projecting camera.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, the utility model low noise projecting camera 1 comprises upper shell 11, lower house 12 and is arranged on the interior photo engine of housing, circuit board, light source and corresponding cooling mechanism that cooling mechanism comprises many fans that vary in size.Inside surface at upper shell 11 is coated with a deadener layer 111, is coated with a deadener layer 121 at the inside surface of lower house 12.The preferred acrylic acid damping of deadener coating also can adopt other deadener.
The utility model low noise projecting camera by applying one deck deadener in shell inner surface, can be obtained good noise elimination effect under the situation that does not increase other silencing equipment, have practical value and popularizing application prospect.
Claims (2)
1. low noise projecting camera, comprise upper shell, lower house and be arranged on the interior photo engine of housing, circuit board, apparatus for lighting up, light source, power supply and corresponding cooling mechanism, cooling mechanism comprises many fans that vary in size, and it is characterized in that: the inside surface of described upper shell and lower house is coated with a deadener layer respectively.
2. low noise projecting camera as claimed in claim 1 is characterized in that: described deadener layer is made of acrylic acid damping coating or similar coating with noise elimination effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039206 CN2888492Y (en) | 2006-01-24 | 2006-01-24 | A low-noise projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039206 CN2888492Y (en) | 2006-01-24 | 2006-01-24 | A low-noise projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888492Y true CN2888492Y (en) | 2007-04-11 |
Family
ID=38047063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620039206 Expired - Fee Related CN2888492Y (en) | 2006-01-24 | 2006-01-24 | A low-noise projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888492Y (en) |
-
2006
- 2006-01-24 CN CN 200620039206 patent/CN2888492Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |