JPH05226853A - Housing structure - Google Patents

Abstract

PURPOSE:To increase strength while keeping the profile as it is and to improve heat dissipating effect by forming at least part of a housing having a heat generating component therein of a metal plate, and covering part of the surface of the plate with a resin plate. CONSTITUTION:A metal plate 3 and a resin layer 4 covering part of a surface of the plate 3 are integrally laminated to be adhered, for example, to a lower surface of a housing 2 of a video camera 1. Further, three slits 8 are formed, for example, in parallel on the layer 4, and the plate 3 is exposed through the slits 8. Here, a width of the slit 8 is so set to about 1 to 2mm that, when a user holds the camera 1, his fingers are not brought into contact with the plate 3. According to this embodiment, heat generated in the housing 2 of the camera 1 is uniformly transferred to the plate 3, and externally dissipated through the slits 8 formed on the layer 4. Further, a strength of the housing 2 can be increased by the plate 3. In addition, since the width of the slit 8 is narrow and a finger is not inserted, the user's finger is not brought into contact with the plate 3 of a high temperature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing structure of a portable device such as a video camera, and particularly to a casing capable of efficiently radiating heat generated from a heat-generating component housed inside to the outside. Regarding body structure.

[0002]

2. Description of the Related Art In recent years, video cameras have been reduced in size so that they are convenient to carry, and their handling is improved. The conventional housing of this video camera is made of resin whose outer shape is easily molded.

[0003]

As described above, since the conventional casing of the video camera is made of resin, there is a problem that the strength is weak. In addition, circuit components such as ICs, casing image pickup elements, and heat-generating components such as a motor for rotating a cylinder are housed in the casing of the video camera.
The packaging density of these components increases as the miniaturization of video cameras progresses, and the heat generated from the components is more likely to stay inside. Further, due to the miniaturization, the surface area of the housing is reduced, and since the housing is made of a resin having a poor thermal conductivity, there is a problem that the heat radiation to the outside is hardly performed. As a result, there is a possibility that the temperature inside the housing rises and each circuit does not operate normally, or the attached magnetic tape exceeds the heat resistant temperature and is deteriorated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a casing structure capable of increasing the strength and improving the heat dissipation effect while maintaining the external appearance.

[0005]

According to a first aspect of the present invention, there is provided a housing structure of a housing 2 in which heat-generating components are housed, wherein at least a part of the housing 2 is a metal plate 3. While being formed, a part of the surface of the metal plate 3 is covered with the resin layer 4.

The housing structure according to a second aspect is characterized in that the resin layer 4 is provided at an interval such that a finger does not directly touch the metal plate 3 when the housing 2 is held by a hand.

[0007]

In the casing structure according to claim 1, the casing 2
Since at least a part of it is composed of the metal plate 3, sufficient mechanical strength can be obtained and the housing 2 can be downsized. Further, the appearance of the outer shape can be made almost conventional by the resin layer 4 covering the metal plate 3. Furthermore, the heat generated in the housing 2 can be radiated to the outside through the metal plate 3 in the portion not covered with the resin layer 4, and the temperature inside the housing 2 can be prevented from rising.

In the case structure according to the second aspect, since the finger does not directly touch the metal plate 3 when the case 2 is held by the hand, there is no danger of the finger touching the heated metal plate 3. You can

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the housing structure of the present invention will be described below with reference to the drawings.

1 to 4 show the configuration of this embodiment. As shown in FIG. 1, the lower surface of the housing 2 of the video camera 1 is formed by integrally laminating and bonding a metal plate 3 and a resin layer 4 that covers a part of the surface of the metal plate 3. On the metal plate 3,
An opening 6 is formed on the lower surface of the housing 2 shown in FIG. 4 to expose a mounting portion 5 for mounting the camera on a tripod or the like. The resin layer 4 has the same outer shape as the metal plate 3,
An opening 7 of the same shape is formed at a position facing the opening 6 formed in the metal plate 3. Further, for example, three slits 8 are formed in parallel in the resin layer 4, and the metal plate 3 is exposed through the slits 8. Here, the width of the slit 8 is such that when the user holds the video camera 1,
1mm to 2mm so that the user's finger does not touch the metal plate 3.
It has become a degree.

According to this embodiment, the heat generated in the housing 2 of the video camera 1 is evenly transferred to the metal plate 3 and radiated to the outside through the slit 8 formed in the resin layer 4.
Therefore, it is possible to prevent the temperature inside the housing 2 from rising, and further, the strength of the housing 2 can be increased by the metal plate 3. Since the metal plate 3 is covered with the resin layer 4,
A simple shape is enough. Furthermore, since the width of the slit 8 is narrow and a finger cannot enter, the user's finger does not touch the hot metal plate 3.

In the above embodiment, the case where the surface of the resin layer 4 is a flat surface has been described, but it is possible to form an arbitrary unevenness by molding, and the appearance surface has the same shape as that of a conventional resin case. be able to. The double layer portion may be provided on a portion other than the bottom surface of the video camera 1. Further, the same structure can be applied to a case other than the video camera 1 that has a built-in heating element.

[0013]

As described above, according to the housing structure of claim 1, at least a part of the housing is formed of a metal plate, and a part of the surface of the metal plate is covered with a resin layer. Therefore, the heat generated in the housing is transmitted to the metal plate and radiated to the outside through the portion not covered with the resin layer. Therefore, it is possible to prevent the temperature inside the housing from rising, the strength of the housing is increased by the metal plate, and the appearance of the outer shape can be arbitrarily obtained by the resin layer.

According to the housing structure of the second aspect, the resin layers are spaced apart so that the user's finger cannot be inserted.
Fingers do not touch hot metal plates.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a double layer portion according to an embodiment of a housing structure of the present invention.

FIG. 2 is a perspective view showing a configuration of the metal plate of FIG.

FIG. 3 is a perspective view showing a configuration of a resin layer of FIG.

FIG. 4 is an external perspective view showing the configuration of an example of a video camera to which this embodiment is applied.

[Explanation of symbols]

 2 case 3 metal plate 4 resin layer

Claims (2)

[Claims] 1. A housing structure of a housing in which a heat-generating component is housed, wherein at least a part of the housing is formed of a metal plate, and
A case structure, wherein a part of the surface of the metal plate is covered with a resin layer. 2. The housing structure according to claim 1, wherein the resin layers are provided at intervals such that a finger does not directly touch the metal plate when the housing is held by a hand.