JPH0677669A - Housing structure for outdoor device - Google Patents

Abstract

PURPOSE:To achieve a housing structure for a outdoor device which can effectively prevent water from entering simultaneously with good atmospheric pressure regulation. CONSTITUTION:In the bottom cover 14 of a housing 12, a relatively large respiration hole 18 is punched out and a drain opening 23 is separately provided, an inner partitioning plate 16 having a vent hole 25 in a position which do not align with the respiration hole 18 is provided substantially in paralell with the bottom cover 14, and a ramp section 27 is provided so that rainwater or the klike entering from the respiration hole 18 can drop at least in the vicinity of the drain opening 23 along the ramp section 27 to be discharged from the drain opening 23. In the drain opening 23 of the bottom cover 14, a valve 21 is provided which normally closes and opens by its buoyancy when rainwater or the like more than a predetermined amount is collected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing structure for outdoor equipment.

[0002]

2. Description of the Related Art Conventionally, if a casing of an electronic device, such as a wireless device, installed outdoors is of a completely sealed type, a large destructive stress will be exerted due to a pressure difference between the inside and the outside. Breathing holes are inevitably needed.

[0003]

However, if the diameter of the breathing hole is increased, a large amount of rain or fog that causes rust will enter due to wind and rain. On the other hand, in order to reduce this, the hole diameter must be reduced. Then, there is a problem that external water droplets and humidity are required to be sucked from there due to the suction phenomenon accompanying the atmospheric pressure adjustment.

Therefore, it is an object of the present invention to provide a casing structure for an outdoor device which can effectively prevent water from entering while at the same time performing good pressure adjustment.

[0005]

In order to solve the above-mentioned problems, an outdoor device housing structure according to the present invention is provided with a relatively large breathing hole in a bottom cover of the housing and a drain opening. Then, an internal partition plate having a ventilation hole at a position that does not coincide with the breathing hole is provided substantially parallel to the bottom cover, rainwater and the like entering through the breathing hole travels there and falls to at least the vicinity of the drainage opening, The structural feature is that an inclined portion that can be discharged from the drainage opening is provided.

[0006] Preferably, the drain opening of the bottom cover is normally closed to collect a predetermined amount of rainwater or the like,
A valve device for opening the valve by the buoyancy is attached.

[0007]

[Operation] The air pressure is adjusted by the breathing hole of the bottom cover and the ventilation hole of the partition plate. Rainwater entering from the breathing hole does not enter the inside of the housing but falls along the inclined part and near the drainage opening. , Outflow from the drainage opening. In the case where a valve device is attached, when rainwater or the like is accumulated in a predetermined amount or more, its buoyancy acts on the valve device and the drainage opening opens.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional side view of an embodiment of an outdoor device housing structure according to the present invention, and FIG. 2 is an enlarged sectional view of a main part. Referring to these drawings, a box-shaped casing 12 having a plurality of units 11 forming a main part of a wireless communication device is provided with a double structure substantially parallel to the bottom cover 14 on the lower side inside thereof. A partition plate 16 is provided.

The bottom cover 14 is provided with a relatively large breathing hole 18 so that smooth ventilation is possible, and at a position away from the breathing hole 18, a valve body 21 to be described later is normally closed. A drainage opening 23 is provided. The partition plate 16 is provided with ventilation holes 25 at positions that do not coincide with the breathing holes 18 of the bottom cover 14. Also, the partition plate 16
At a predetermined position on the lower surface side of the bottom cover 14 so as to block a line connecting the breathing hole 18 of the bottom cover 14 and the ventilation hole 25 of the partition plate 16 or along the line to draw rainwater (in FIG. 2, finely hatched). An inclined portion 27 (obstacle member) that is inclined is provided so that a portion such as a water drop) cannot linearly enter the inside. Therefore, due to the presence of the inclined portion 27, rainwater or the like that enters from the breathing hole 18 of the bottom cover 14 is not blocked by this and does not enter the substantial inside of the housing 12, and instead the inclined portion 27 is inclined. While moving along the portion 27, it falls near the drainage opening 23.

A valve body 21 having a similar plug body-like external shape is attached to the drainage opening 23 having a vertical cross section like a funnel. This valve body 21
Are made of different members, and the upper portion 21a is made of a material having a smaller specific gravity than water (for convenience, floats on water), for example, styrofoam, and the lower portion 21b has a larger specific gravity than water (simple Is submerged in water). When a certain amount of rainwater or the like is accumulated near the valve body 21 (drainage opening 23), the buoyancy of the valve body upper portion 21a overcomes its own weight, whereby the valve body 21 moves to the upper side for drainage. The opening 23 will open. And
After being discharged to some extent, the drainage opening 23 closes. On the other hand, in normal times when rainwater etc. are not so accumulated,
The valve body 21 closes the drainage opening 23 by its own weight.

As described above, in the structure of this embodiment, it is possible to effectively prevent the intrusion of rainwater and the like into the inside while being able to adjust the atmospheric pressure inside and outside, and to drain it appropriately, which is extremely rational. It is practical and practical.

[0012]

As described above, according to the present invention, it is possible to effectively prevent atmospheric pressure while at the same time performing good pressure adjustment.

[Brief description of drawings]

FIG. 1 is a cross-sectional side view of an embodiment of an outdoor device housing structure according to the present invention.

FIG. 2 is an enlarged sectional view of a main part.

[Explanation of symbols]

 12 ... Casing 14 ... Bottom cover 16 ... Partition plate 18 ... Breathing hole 21 ... Valve body 23 ... Drainage opening 25 ... Ventilation hole 27 ... Inclined part

Claims (2)

[Claims] 1. The bottom cover (14) of the housing (12) is provided with a relatively large breathing hole (18) and a drainage opening (23) is provided separately, and does not coincide with the breathing hole (18). Ventilation holes in position (25)
An inner partition plate (16) having a substantially parallel to the bottom cover (14), rainwater or the like entering from the breathing hole (18) is transmitted therethrough and drops into at least the vicinity of the drainage opening (23), A housing structure for an outdoor device, which is provided with an inclined portion (27) that can be discharged from a drainage opening (23). 2. A drainage opening (2) in the bottom cover (14).
The outdoor device according to claim 1, further comprising a valve device (21) that is normally closed and that opens when the amount of rainwater or the like is accumulated by a buoyancy force. Case structure.