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Ventilation member

A technology for components and cover parts, which is applied in the direction of air-proof/waterproof devices, parts of lighting devices, lighting devices, etc., and can solve the problem that the air flow of ventilating components is not easy, etc.

Active Publication Date: 2010-01-20
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it is not easy to increase the air flow rate of the ventilation member
The bottleneck of air flow is the air filter with high air resistance, but the air filter has been improved to the point that it cannot be changed
[0007] Of course, if the size of the ventilation member itself is increased, the air flow rate will also increase proportionally. However, a change in the size of the ventilation member requires a design change on the other side (equipment side), so it cannot be simply adopted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0042] figure 1 is a sectional perspective view of the ventilation member of the present invention. figure 2 Yes figure 1 Perspective view of the breathable member. image 3 It is a cross-sectional view showing a state in which the first and second air-permeable members are attached to a housing of a device requiring ventilation. like image 3 As shown, by attaching the air-permeable member 100 to the nozzle-shaped filter mounted portion 53 provided on the frame 51 of the device, it is possible to ventilate the inside of the frame 51 while preventing the intrusion of foreign matter such as water droplets. In addition, the pressure inside the frame body 51 can be kept equal to the external pressure.

[0043] like figure 1 , figure 2 and image 3 As shown, the ventilation member 100 has a cylindrical member 11 , a ventilation filter 19 and a cover member 31 . Among them, in figure 1 The breathable filter 19 is omitted. The cylindrical part 11 is roughly cylindrical, ...

no. 2 approach

[0063] Figure 9 It is a sectional perspective view of the second embodiment of the ventilation member of the present invention. Figure 10 Yes Figure 9 Perspective view of the breathable member. Among them, in Figure 9 The breathable filter 19 is omitted. The applications and functions of the ventilation member 200 of the second embodiment are the same as those of the ventilation member 100 described in the first embodiment. The same is true for increasing the effective area of ​​the air-permeable member 19 by making the opening area of ​​the filter-side opening 65 larger than that of the connection-side opening 63 and increasing the air flow rate per unit time. The main difference from the above embodiment is that the fixing piece 97 which plays an important role in the relative positioning of the cylindrical member 61 and the cover member 81 is integrally formed with the cylindrical member 61 .

[0064] like Figure 9 and Figure 10 As shown, the ventilation member...

no. 3 approach

[0071] Figure 15 It is an exploded perspective view of the third embodiment of the ventilation member of the present invention. Figure 16 Yes Figure 15 A longitudinal sectional view of the ventilating member.

[0072] like Figure 15 and Figure 16 As shown, the ventilation member 300 has the cylindrical member 102 , the ventilation filter 19 and the cover member 110 . The cylindrical member 102 has a substantially cylindrical shape, and forms a first ventilation path BR inside it. 1 and a second air-breathing path BR separated from the first air-breathing path BR1 2 . The first ventilation path BR 1 It is a ventilation path directly connected with the internal space of the equipment frame. The second ventilation path BR 2 It is a ventilation path directly connected to the frame body of the equipment and the external space of the ventilation member 300 . The cover member 110 is a member embedded in the cylindrical member 102 on the inside, and consists of a bottom...

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PUM

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Abstract

A ventilation member (100) of the invention includes a tubular part (11), a gas permeable filter (19), and a cover part (31). In an attached state where the tubular part (11) is fit into the cover part (31), gaps functioning as gas passages (AR2 and AR3) are formed between a bottom portion (35) of the cover part (31) and the gas permeable filter (19) and between a side wall portion (39) of the cover part (31) and a body portion (17) of the tubular part (11). The opening area (S2) of a filter-end opening (15) with respect to an in-plane direction (WL) perpendicular to the thickness direction of the gas permeable filter (19) is larger than the opening area (S1) of a connection-end opening (13) with respect to the in-plane direction (WL).

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of August 23, 2006 and an application number of 200680031022.8. technical field [0002] The present invention relates to an air-permeable member using an air-permeable and waterproof air-permeable filter. Background technique [0003] For example, as described in Japanese Patent Laid-Open No. 10-085536 and Japanese Patent Laid-Open No. 2001-143524, ventilating members used in automotive equipment (lamps, engines, sensors, switches, ECUs, etc.) use both Air-permeable, dust-proof and water-resistant breathable filter (breathable membrane). Recently, the use of ventilating members has also begun to be studied in electrical equipment such as mobile communication equipment, cameras, electric shavers, and electric toothbrushes. [0004] The air-permeable member as described above prevents the intrusion of dust and water into the inside of the device, and also performs the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V31/03F21W101/02F21W107/10F21Y101/00
Inventor 古山了柳俊辉
Owner NITTO DENKO CORP