JP2000222926A - Casing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casing which can protect a light source and suitably change intensity of light irradiated from the light source to a user and facilitate work of manufacture, separation and recovery by eliminating need for welding parts whose material is different from the casing in using a light source cover and suppress manufacturing costs of a mold. SOLUTION: Light L from a LED 102 is made incident into through holes 101a formed in oblique direction to an optical axis of the LED 102 at four portions surrounding a shading wall 101b of a panel 101 oppositely spaced to the LED 102. Light of suitable intensity to a user can be provided by outgoing the light L reflected at inner wall surface of the through holes 101a through the through holes 101a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing, and more particularly to a housing for protecting a light source and obtaining good visibility after converting light emitted from the light source to an appropriate intensity for a user. About.

[0002]

2. Description of the Related Art FIG. 4 is a front view for explaining an LED cover portion of an electronic device housing as an example of a conventional housing, and FIG. 5 is a sectional view taken along line BB shown in FIG. FIG. As a housing of the electronic device, for example, inside a panel 401 which is an injection-molded part of a synthetic resin, a light source, for example, an LED 402 that displays an operation state such as power ON / OFF as a part of an electric circuit of the electronic device. It is stored. Also, the LED 402 of the panel 401
A through-hole is formed in a portion facing away from the LED, and the opening of the through-hole is provided for protecting the LED 402, reducing the brightness of the LED 402 and diffusing light, or in designing an electronic device. As a transparent or translucent part, for example, a synthetic resin injection molded part L
The ED cover 403 is attached. Further, the LE
The D cover 403 is connected to the panel 401 and a welding point 401b.
It is fixed by welding.

Next, as an example of a conventional housing, a transmission process of light L from an LED 402 for displaying an operation state of an electronic device will be described with reference to FIG. The LED 402 emits light, for example, when the power of the electronic device is turned on, and the light L from the LED 402 is transmitted to the inner wall surface of the panel 401. The light L transmitted to the inner wall surface of the panel 401 passes through the LED cover 403 and passes through the panel 40.
1 and transmitted to the outer wall side, and the user of the electronic device
By visually observing the light L transmitted through the ED cover 403, for example, a power-on state can be known as an operation state of the electronic device. Thus, as an example of a conventional housing,
The panel 401 of the electronic device protects the light source LED 402 that displays the operating state and the like by the LED cover 403 welded to the panel 401 and also reduces the intensity of the light L from the LED 402 to an appropriate level when transmitting the light L. To prevent irritation to the user's eyes.

[0004]

However, the conventional housing has the following problems. That is,
The conventional housing, for example, the panel 401 of the electronic device and the LED cover 403 are parts made of different materials, and the cost of the parts of the LED cover 403 and the number of working steps for welding at the welding point 401b have been generated. Further, welding of parts made of different materials requires man-hours for separating and collecting the electronic device when the electronic device is recycled in the future. Therefore, improvement has been desired in evaluating the product assessment of the electronic device.

Accordingly, it is an object of the present invention to protect a light source, change the intensity of light emitted from the light source to a level appropriate for a user, and to provide a panel and a light-emitting device such as a conventional housing using a light source cover. An object of the present invention is to provide a housing which does not need to weld a transparent or translucent light source cover made of a different material, thereby facilitating production and separation / recovery operations, and further reduces the manufacturing cost of a mold.

[0006]

According to the present invention, there is provided a housing provided with a panel which is spaced apart from a light source for irradiating light along an optical axis, wherein the panel emits light from the light source. A direct light shielding wall that shields direct light composed of a light beam having a predetermined diameter centered on the optical axis, and a light source that is pierced around the direct light shielding wall in a direction oblique to the optical axis. And a through-hole that converts at least a part of the direct light other than the light flux irradiated from the light into the indirect light and leads the light to the outside. Further, the through-hole has a trapezoidal opening on the inner wall surface of the panel surrounding the direct light shielding wall, and communicates with the same cross-sectional shape as the opening shape, and is located closer to the optical axis than the inner wall surface of the panel. The opening is formed on the outer wall surface of the panel. Further, the through hole can be divided by a mold joining surface that is perpendicular to the panel and that extends from an outer wall opening to an inner wall opening of the panel, and is joined at the mold joining surface. It is characterized by being molded by a pair of molds. By such means, the portion facing the light source is directly covered and protected by a light-shielding wall, and the light irradiated from the light source is perforated in the direction oblique to the optical axis around the direct-light shielding wall. Eliminates the inconvenience of stimulating the user's eyes by changing it to indirect light through the through hole and leading it out,
Further, unlike a conventional housing using a light source cover, there is no need to weld a transparent or translucent part made of a material different from that of the panel to the opening, thereby facilitating the manufacture and reducing the work load at the time of separation and collection. In addition, the present invention has realized a housing in which the increase in the manufacturing cost of the mold for molding the through hole is suppressed as much as possible.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a case according to an embodiment of the present invention will be described with reference to the drawings, taking an example in which the present invention is applied to a case of an electronic device. FIG. 1 is a front view for explaining an LED cover portion of an electronic device housing for a housing according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA shown in FIG. It is sectional drawing. The housing according to the present embodiment is manufactured by, for example, injection molding of a synthetic resin, and is applied to the housing of an electronic device. As a part of an electric circuit of the electronic device, for example, power ON, OFF
This is a housing including a panel 101 that is spaced apart from and faces an LED 102 as an example of a light source that irradiates light along an optical axis that displays an operation state such as an operation state. This panel 101
The LED 102 is physically isolated and protected, and the LE 102
In order to eliminate the inconvenience that the light from D102 directly enters the eyes of the user to give a stimulus, the light source LED 102
A light-shielding wall 101b as an example of a direct light-shielding wall that shields direct light composed of a light beam having a predetermined diameter centered on the optical axis emitted from the light-shielding wall, and the optical axis is inclined at four places around the light-shielding wall 101b. The light source LED 102
And at least a part of the direct light other than the light flux emitted from the panel 101 is converted into indirect light, and the through-hole 101a is led out to the outer wall surface side of the panel 101.

Further, the through hole 101a has a trapezoidal opening to the panel 101b surrounding the direct light shielding wall 101b and communicates with the same cross-sectional shape as the opening shape. Also, an opening is formed on the outer wall surface of the panel 101 at a position close to the optical axis.

FIG. 3 is a partial cross-sectional view for explaining a mold structure used for manufacturing a panel 101 of an electronic device in a case according to an embodiment of the present invention. As an example of the housing, the panel 101 of the electronic device housing is manufactured by, for example, injection molding of a synthetic resin. The through hole 101a formed in the panel 101 is formed by a pair of molds having a surface perpendicular to the panel 101 from the outer wall opening to the inner wall opening of the panel 101 as a mold joining surface. Is done. That is, the vertical surface is set to the cavity C of the mold.
And a through-hole 101a formed by a pair of dies which are used as a mold joining surface of the through-hole 101a molding portion Ca ′ and the through-hole 101a molding portion Co ′ of the mold core Co. By doing so, at the time of molding, the panel 101 has the cavity Ca of the mold and the core Co of the mold.
And the panel 101 is removed from the mold by a relative linear motion perpendicular to the panel 101 (in the direction of the arrow in the figure).

Next, a description will be given of a process of transmitting light L of the LED 102 for displaying the operation state of the electronic device in the housing according to the embodiment of the present invention with reference to FIG. Light source LED
Reference numeral 102 denotes an operation state of the electronic device, for example, power ON.
Light is emitted when in the state, and the light L from the LED 102 is applied to, for example, an inner wall surface as one main surface of the panel 101 which faces away from the LED 102. Panel 1
01 of the light L applied to the inner wall surface of the LE
Four holes penetrating in a direction oblique to the four optical axes surrounding a light-shielding wall 101b that shields a direct light composed of a light beam of a predetermined diameter centered on the optical axis of the panel 101 facing away from D102. The light enters the hole 101a.

The through hole 101a is provided in the light shielding wall 101.
b, the trapezoidal opening is formed in the inner wall surface of the panel 101 at the four positions surrounding the panel 101, and communicates with the same cross-sectional shape as the opening shape.
Since the aperture is opened on the outer wall surface of the panel 101 at a position close to the optical axis of the light 102, the light L incident on the through hole 101a
Is mainly reflected between two parallel surfaces, and the amount of light decreases each time the light is reflected. Therefore, when the light is emitted from the through-hole 102, it can be light having an appropriate intensity for the user. By drilling the through-holes 101a at four positions surrounding the optical axis with the portion on the optical axis side, the through-holes 101a are formed.
Since the light reflected by the inner wall surface of a is converged from all directions and visibility is improved, visibility that is equal to or higher than that of a conventional housing using a light source cover can be obtained. Therefore, a user of the electronic device can know, for example, a power-on state as an operation state of the electronic device by visually observing the light L that has passed through the inner wall surface of the through hole 101a.

As described above, according to the housing according to the embodiment of the present invention, the light L emitted from the LED 102 emits the light L of the panel 101 facing the LED 102 at a distance.
Since it is covered by a light-shielding wall 101b that shields direct light composed of a light beam having a predetermined diameter around the optical axis of the ED 102,
The LED 102 can be physically isolated from the space outside the panel 101 and protected. In addition, unlike a conventional housing using a light source cover, there is no need to weld a transparent or translucent LED cover made of a material different from that of the panel, thereby facilitating operations during manufacturing and separation / recovery. it can.

Further, a part of the light L emitted from the LED 102 emits the light L at four places surrounding the light shielding wall 101b.
The incident light enters a trapezoidally-formed through-hole 101a formed in a direction oblique to the optical axis of the ED 102, and the through-hole 101a
Is mainly reflected between two parallel surfaces, and the amount of light decreases each time the light L is reflected. Therefore, when the light L is emitted from the through-hole 101a, it can be light having an appropriate intensity for the user. By forming the through-holes 101a at four locations surrounding the optical axis with the upper side of the trapezoidal opening on the optical axis side, the light reflected by the inner wall surface of the through-hole 101a is collected from all directions. Since light is emitted and visibility is improved, visibility equal to or higher than that of a conventional housing using a light source cover can be obtained.

The through-hole 101a is formed so that a surface perpendicular to the panel 101 from the outer wall opening to the inner wall opening of the panel 101 is formed with the through-hole 101a forming part Ca 'of the mold cavity Ca. The panel 101 has a structure that can be molded by a pair of molds as a mold joining surface of the through-hole 101a of the mold core Co and the molding part Co ′.
During molding, the cavity Ca of the mold and the core C of the mold
The structure can be removed from the mold by a relative linear motion in the vertical direction with respect to the panel 101 with respect to o, and the production cost of the mold can be suppressed.

[0015]

As described above, according to the housing of the present invention, since the portion facing the light source is directly covered with the light shielding wall, the light source is physically isolated and protected from the space outside the panel. Also, unlike the conventional housing using the light source cover, it is not necessary to weld a transparent or translucent component made of a material different from that of the panel to the opening, and therefore, it is very easy to manufacture and at the same time, In addition, the work load at the time of separation and collection can be reduced, and a part of the light emitted from the light source is led out to the outside through a through hole formed in the direction directly oblique to the optical axis around the light shielding wall. Therefore, the light source light can be visually recognized by the indirect illumination that is easy on the eyes, and an excellent effect of eliminating the inconvenience of the light from the light source directly entering the eyes of the user and giving a stimulus can be achieved. Further, the through-hole,
An opening is formed in a trapezoidal shape on the inner wall surface of the panel surrounding the direct light shielding wall, communicates with the same cross-sectional shape as the opening shape, and opens on the outer wall surface of the panel at a position closer to the optical axis than the inner wall surface of the panel. Therefore, the light incident on the through hole is parallel 2
Since the light is mainly reflected between the surfaces, and the amount of light decreases with each reflection,
When the light is emitted from the through hole, the light can be made to have an appropriate intensity for the user. Also, by forming the through holes at four places surrounding the optical axis with the upper side of the trapezoidal opening on the optical axis side. ,
The light reflected from the inner wall surface of the through-hole is collected from all sides, and the visibility is improved, so that visibility equal to or higher than that of the conventional housing using the light source cover can be obtained. To play. Furthermore, the through-hole can be divided by a mold joining surface that is perpendicular to the panel and that extends from an outer wall opening to an inner wall opening of the panel, and is joined at the mold joining surface. Since the molding is performed using a pair of dies, the molded product is removed from the dies by the relative linear motion of the pair of dies, and the effect of reducing the manufacturing cost of the dies can be achieved.

[Brief description of the drawings]

FIG. 1 is a front view for explaining an LED cover part of an electronic device housing in a housing according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the housing according to the embodiment of the present invention, taken along line AA shown in FIG.

FIG. 3 is a partial cross-sectional view for explaining a mold structure used for manufacturing a panel of an electronic device in the housing according to the embodiment of the present invention.

FIG. 4 shows an LE of an electronic device housing as an example of a conventional housing.
It is a front view for explaining D cover part.

FIG. 5 shows an example of a conventional housing, which is shown in FIG.
It is sectional drawing at the time of cutting by the B line.

[Explanation of symbols]

 101 Panel 101a Through Hole 101b Light Shielding Wall 102 LED L Light Ca Mold Cavity Ca 'Mold Cavity Through Hole Molding Co Co Mold Core Co' Mold Core Through Hole Molding

Claims (3)

[Claims] 1. A housing provided with a panel which faces away from a light source for emitting light along an optical axis, wherein the panel has a predetermined diameter centered on the optical axis emitted from the light source. A direct light shielding wall for shielding the direct light composed of the light flux, and a hole formed around the direct light shielding wall in a direction oblique to the optical axis, for direct light other than the light flux irradiated from the light source. And a through hole for converting at least part of the light into indirect light and leading the light to the outside. 2. The through hole has a trapezoidal opening on the inner wall surface of the panel surrounding the direct light shielding wall, and communicates with the same cross-sectional shape as the opening shape, and the optical axis is higher than the inner wall surface of the panel. 2. The casing according to claim 1, wherein the casing is opened at a position close to the panel. 3. The through-hole is a surface perpendicular to the panel and can be divided by a mold joining surface extending from an outer wall opening to an inner wall opening of the panel. The casing according to claim 1 or 2, wherein the casing is formed by a pair of molds that are joined with each other.