Noise-proof projector

Abstract

The utility model discloses a noiseproof projector, which relates to the technical field of projectors and comprises a closed shell and a working system arranged in the closed shell, and sound insulation cotton is arranged on the inner wall of the closed shell. A water cooling circulation mechanism is further arranged in the closed shell, the water cooling circulation mechanism comprises a cold exhaust fan, and a noise reduction mechanism is arranged on the leeward side of the cold exhaust fan in a separated mode; the noise reduction mechanism comprises an installation frame and sound insulation pieces, the inner walls of the two opposite sides of the installation frame are connected with the multiple sound insulation pieces correspondingly, the sound insulation pieces on the inner walls of the two sides are distributed in a staggered mode, and a communicating space with the two ends open is formed between the multiple sound insulation pieces. The closed shell is closed, and the sound insulation cotton is arranged on the inner wall of the closed shell, so that the noise reduction effect can be doubly enhanced; the noise of the cold exhaust fan can be greatly weakened through the four layers of sound insulation sheets in the noise reduction mechanism, the effect of deep noise reduction is achieved, and the whole projector achieves a good mute effect.

Description

Technical Field

[0001] The utility model relates to the technical field of projectors, in particular to a noise-proof projector. Background Art

[0002] The noise of the projector mainly comes from two aspects: electromagnetic noise and pneumatic noise. Electromagnetic noise is caused by the vibration of certain mechanical parts or space volume caused by the alternating changes of the electromagnetic field, while pneumatic noise is related to the cooling fan and other parts of the projector.

[0003] In the prior art, the working system inside the projector casing mainly generates electromagnetic noise, while the cooling fan generates startup noise. Although existing projectors have taken certain noise reduction measures, such as using a casing made of better sound insulation material, due to the setting of heat dissipation holes on the surface of the casing, the noise inside the casing will inevitably flow out. Therefore, generally, a relatively good noise reduction effect cannot be achieved, which is still quite disturbing to some users who are sensitive to noise. Utility Model Content

[0004] The purpose of the utility model is to provide a noise-proof projector to solve the following technical problems:

[0005] How to get good noise reduction on a projector.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A noise-proof projector comprises a closed shell and a working system arranged inside the closed shell, wherein sound insulation cotton is arranged on the inner wall of the closed shell; a water cooling circulation mechanism is also arranged in the closed shell to dissipate heat from the closed shell working system; the water cooling circulation mechanism comprises a cold exhaust fan, and a noise reduction mechanism is separately arranged on the leeward side of the cold exhaust fan;

[0008] The noise reduction mechanism includes a mounting frame and sound insulation sheets. The inner walls on both sides of the mounting frame are connected to a plurality of sound insulation sheets respectively. The sound insulation sheets on the inner walls on both sides are distributed in a staggered manner. A connecting space with openings at both ends is formed between the plurality of sound insulation sheets.

[0009] As a further solution of the utility model: the working system includes a digital micromirror, and the digital micromirror is connected to a water cooling circulation mechanism.

[0010] As a further solution of the utility model: the water cooling circulation mechanism also includes a water cooler and a circulation pipe. The circulation pipe is connected to the water outlet end of the water cooler, the water inlet end of the radiator fan, the water outlet end of the radiator fan, the water inlet end of the digital micromirror, the water outlet end of the digital micromirror, and the water inlet end of the water cooler in sequence from the head end to form a closed circulation water circuit.

[0011] As a further solution of the utility model: the circulation pipe includes a cold water pipe and a hot water pipe, the cold water pipe includes a pipe section one and a pipe section two, one end of the pipe section one is connected to the water outlet of the water chiller, and the other end is connected to the water inlet of the exhaust fan; one end of the pipe section two is connected to the water outlet of the exhaust fan, and the other end is connected to the water inlet of the digital micromirror; one end of the hot water pipe is connected to the water outlet of the digital micromirror, and the other end is connected to the water inlet of the hot water pipe.

[0012] As a further solution of the utility model: the water cooler is located outside the closed shell, the section pipe 1 and the hot water pipe are both penetrated through the shell wall of the closed shell, and a sealing ring is provided between the shell wall of the closed shell.

[0013] Beneficial effects of the utility model:

[0014] When using the projector of the utility model, since the closed shell is set to be closed, it can have a preliminary sound insulation effect on the internal working system. At the same time, sound insulation cotton is arranged on the inner wall of the closed shell to further enhance the noise reduction effect. Finally, when the exhaust fan generates noise, the noise spreads near the exhaust fan. When the noise passes through the noise reduction mechanism, the sound will be greatly weakened by the four layers of sound insulation films in the noise reduction mechanism, thereby achieving a deep noise reduction effect on the noise generated by the exhaust fan, so that the projector as a whole can achieve a better silent effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of a noise-proof projector in one embodiment of the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the noise-proof projector;

[0018] Figure 3 yes Figure 2 A schematic diagram of the internal structure of the noise-proof projector from another angle;

[0019] Figure 4 yes Figure 2-3 A schematic diagram of the structure of a noise reduction mechanism in a noise-proof projector;

[0020] Figure 5 yes Figure 4 Cross-sectional view of the noise reduction mechanism.

[0021] In the figure: 100, closed shell; 200, water cooler; 300, circulation pipe; 301, cold water pipe; 3011, section pipe one; 3012, section pipe two; 302, hot water pipe; 400, exhaust fan; 500, digital micromirror; 600, noise reduction mechanism; 601, installation frame; 602, sound insulation sheet; 700, sound insulation cotton. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2 As shown, the utility model is a noise-proof projector, comprising a closed shell 100 and a working system arranged inside the closed shell 100; the closed shell 100 is in the shape of a rectangular parallelepiped as a whole, and sound-proof cotton 700 is arranged on the inner wall of the closed shell 100, and the sound-proof cotton 700 is arranged in multiple pieces, wherein two pieces of sound-proof cotton 700 are arranged on the four upper, lower, front and rear inner walls of the closed shell 100, and one piece of sound-proof cotton 700 is arranged on the left and right inner walls, and the sizes of the two pieces of sound-proof cotton 700 are respectively equivalent to the sizes of the four upper, lower, front and rear inner walls of the closed shell 100, and the size of one piece of sound-proof cotton 700 is respectively equivalent to the sizes of the left and right inner walls of the closed shell 100, therefore, the arrangement of the sound-proof cotton 700 makes the inner wall of the closed shell 100 almost completely covered as a whole; when the working system generates noise during operation, the sound-proof cotton 700 can play a good sound insulation effect, so that the noise outside the closed shell 100 is greatly reduced.

[0024] The working system in the closed shell 100 includes a digital micromirror 500, which is the core component of the projector. In order to prevent the digital micromirror 500 from being adversely affected by high temperature during use, it is crucial to dissipate heat well. Therefore, in the utility model, a water cooling circulation mechanism is built into the closed shell 100, and the water cooling circulation mechanism is connected to the digital micromirror 500 to perform water cooling on the digital micromirror 500. The water cooling circulation mechanism forms a circulating cold air flow inside the closed shell 100, and the air pressure variation amplitude is quite slight, so it will not affect the closed shell 100.

[0025] See also Figure 3The water cooling circulation mechanism includes a water cooler 200, a circulation pipe 300 and a cold exhaust fan 400, wherein the water cooler 200 is arranged outside the closed shell 100, and the cold exhaust fan 400 is arranged inside the closed shell 100. The circulation pipe 300 is used to connect the water cooler 200, the cold exhaust fan 400, the digital micromirror 500 and the water cooler 200 in sequence to form a closed circulation water circuit; specifically, the circulation pipe 300 is connected to the water outlet end of the water cooler 200, the water inlet end of the cold exhaust fan 400, the water outlet end of the cold exhaust fan 400, the water inlet end of the digital micromirror 500, the water outlet end of the digital micromirror 500, and the water inlet end of the water cooler 200 in sequence from the head end to form a closed circulation water circuit.

[0026] In more detail, the circulation pipe 300 includes a cold water pipe 301 and a hot water pipe 302. The cold water pipe 301 includes a pipe section 1 3011 and a pipe section 2 3012. One end of the pipe section 1 3011 is connected to the water outlet of the water chiller 200, and the other end is connected to the water inlet of the exhaust fan 400; one end of the pipe section 2 3012 is connected to the water outlet of the exhaust fan 400, and the other end is connected to the water inlet of the digital micromirror 500; one end of the hot water pipe 302 is connected to the water outlet of the digital micromirror 500, and the other end is connected to the water inlet of the hot water pipe 302, forming a closed circulation water circuit; wherein, the pipe section 1 3011 and the hot water pipe 302 are both penetrated through the shell wall of the closed shell 100, and a sealing ring is provided between the shell wall of the closed shell 100 to ensure the sealing performance of the closed shell 100.

[0027] In detail, cold water enters the exhaust fan 400 from the water chiller 200 through the section pipe 1 3011, cools the exhaust fan 400 so that the exhaust fan 400 blows out cold air, thereby dissipating heat from the working system inside the closed shell 100. After passing through the exhaust fan 400, the cold water flows out through the section pipe 2 3012 to the digital micromirror 500, thereby exchanging heat with the digital micromirror 500 so that the digital micromirror 500 is cooled. After the heat exchange with the digital micromirror 500, the temperature of the water increases and turns into hot water. The hot water flows back to the water chiller 200 through the hot water pipe 302 for cooling, and then flows out from the cold water pipe 301 to continue cooling, thereby realizing an overall water cooling cycle. The inside of the closed shell 100 is fully cooled by the water cooling circulation mechanism, and the heat dissipation effect is excellent.

[0028] In the cold water circulation mechanism, the exhaust fan 400 located inside the closed shell 100 will generate a large noise when blowing air. Even after the sealing of the closed shell 100 and the sound insulation of the sound insulation cotton 700, the noise generated outside the closed shell 100 cannot be completely eliminated; therefore, in the present utility model, please refer to Figure 4-5A noise reduction mechanism 600 is installed on the leeward side of the exhaust fan 400. The noise reduction mechanism 600 does not contact the exhaust fan 400. The noise reduction mechanism 600 includes a mounting frame 601 and a sound insulation sheet 602. The mounting frame 601 is rectangular as a whole, and a number of sound insulation sheets 602 are equidistantly connected to the inner walls on both sides of the opposite sides, and the sound insulation sheets 602 on the inner walls on both sides of the opposite sides are distributed in a staggered manner. There is a gap between the end of each sound insulation sheet 602 and the inner wall of the mounting frame 601, so that a connecting space with openings at both ends can be formed between the sound insulation sheets 602.

[0029] It should be noted that there is no specific limit on the number of sound insulation sheets 602 equidistantly connected to the inner walls on both sides of the opposite sides of the installation frame 601. In the embodiment of the utility model, two sound insulation sheets 602 are equidistantly connected to the inner walls on both sides of the opposite sides, and a total of four sound insulation sheets 602 are arranged in an alternating manner.

[0030] To elaborate, when the exhaust fan 400 generates noise, the noise spreads near the exhaust fan 400. When the noise passes through the noise reduction mechanism 600, the sound will be greatly weakened by the four sound insulation sheets 602 in the noise reduction mechanism 600, thereby achieving the effect of noise reduction. At the same time, since there is a connecting space with openings at both ends between the four layers of sound insulation sheets 602, the air suction of the exhaust fan 400 will not be affected.

[0031] The working principle of this utility model:

[0032] When using the projector of the present invention, since the closed shell 100 is set to be closed, it can have a preliminary sound insulation effect on the internal working system. At the same time, sound insulation cotton 700 is arranged on the inner wall of the closed shell 100 to further enhance the noise reduction effect; finally, when the exhaust fan 400 generates noise, the noise spreads near the exhaust fan 400. When the noise passes through the noise reduction mechanism 600, the sound will be greatly weakened by the four layers of sound insulation plates 602 in the noise reduction mechanism 600, thereby achieving a deep noise reduction effect on the noise generated by the exhaust fan 400, so that the projector as a whole can achieve a better silent effect.

[0033] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A noise-proof projector, characterized in that: The invention comprises a closed shell (100) and a working system arranged inside the closed shell (100), wherein a sound insulation cotton (700) is arranged on the inner wall of the closed shell (100); a water cooling circulation mechanism is also arranged in the closed shell (100) for dissipating heat from the working system of the closed shell (100); the water cooling circulation mechanism comprises a cold exhaust fan (400), and a noise reduction mechanism (600) is separately arranged on the leeward side of the cold exhaust fan (400); The noise reduction mechanism (600) comprises a mounting frame (601) and a sound insulation sheet (602); the inner walls on two opposite sides of the mounting frame (601) are respectively connected to a plurality of sound insulation sheets (602); the sound insulation sheets (602) on the inner walls on both sides are distributed in a staggered manner; a connecting space with openings at both ends is formed between the plurality of sound insulation sheets (602).

2. The noise-proof projector according to claim 1, characterized in that: The working system comprises a digital micromirror (500), and the digital micromirror (500) is connected to a water cooling circulation mechanism.

3. The noise-proof projector according to claim 2, characterized in that: The water-cooling circulation mechanism further comprises a water cooler (200) and a circulation pipe (300), wherein the circulation pipe (300) is sequentially connected from a head end to a water outlet of the water cooler (200), a water inlet of a cooling fan (400), a water outlet of the cooling fan (400), a water inlet of a digital micromirror (500), a water outlet of the digital micromirror (500), and a water inlet of the water cooler (200), thereby forming a closed circulation water circuit.

4. The noise-proof projector according to claim 3, characterized in that: The circulation pipe (300) comprises a cold water pipe (301) and a hot water pipe (302); the cold water pipe (301) comprises a first pipe section (3011) and a second pipe section (3012); one end of the first pipe section (3011) is connected to the water outlet of the water cooler (200), and the other end is connected to the water inlet of the cold exhaust fan (400); one end of the second pipe section (3012) is connected to the water outlet of the cold exhaust fan (400), and the other end is connected to the water inlet of the digital micromirror (500); one end of the hot water pipe (302) is connected to the water outlet of the digital micromirror (500), and the other end is connected to the water inlet of the hot water pipe (302).

5. The noise-proof projector according to claim 4, characterized in that: The water cooler (200) is located outside the closed shell (100), and the section pipe (3011) and the hot water pipe (302) are both inserted into the shell wall of the closed shell (100), and a sealing ring is provided between the shell wall of the closed shell (100).

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