JPH06249719A - Housing structure - Google Patents

Abstract

PURPOSE:To avoid operation at dangerous temperature by locating a temperature indicating part, made of a temperature-sensitive material having hue variable at a specific temperature, in a predetermined region of a basic member fixed to the surface of a housing thereby notifying the surface temperature of housing using visual information. CONSTITUTION:A housing 20 contains a heating source. The housing 20 is fixed with fins 21 to the top face, a name plate 23 to a side face 22, and a temperature indicating part 25 to a lower corner thereof. A caution saying that the coloring temperature is set at the heat resistant temperature of the housing 20 is provided in a region corresponding to the indicating part 25. In the temperature indicating part 25, a heat-sensitive paint of cholesteric liquid crystal is applied on the concerned region of the basic material. This structure notifies temperature conditions of the housing 20 in the form of visual information, i.e., variation of hue at the temperature indicating part 25, and quickly copes with temperature rise due to failure or abnormal use of the device thus avoiding danger.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing structure including a heat source such as a light source section in a microscope apparatus, and more particularly to improvement of a structure for notifying temperature information of the housing to the outside.

[0002]

2. Description of the Related Art Conventionally, a microscope apparatus is often provided with a light source device for illuminating a sample to be observed with an arbitrary luminous flux. Such a light source device generally has a structure in which a heat generating material such as a halogen lamp is included in the housing. The housing forming the outer wall of the light source device may be heated to a temperature that is harmful to peripheral equipment of the microscope main body and an operator due to radiant heat and heat conduction of the included lamp.
Therefore, the light source device is provided with a function as a shielding unit that prevents the heat generated in the housing from leaking to or conducting to another.

On the other hand, when exchanging the lamp of the light source device or moving the microscope device together with the light source device, the lamp is allowed to stand still until the temperature of the device including the housing falls to such an extent that it does not harm the operator. Need to be kept.

Therefore, conventionally, as shown in FIG. 4, a nameplate 2 marked with high temperature is attached to the outer surface of the housing 1 of the light source device by a fixing means such as an adhesive or a stud. The name plate 2 is formed by processing a base material made of an aluminum plate, a plastic plate, a film, or the like into a desired outer shape and size, and transferring a caution statement 3 to the operator's surface by screen printing or the like. Alternatively, as shown in FIG. 5, the caution sentence 4 is directly printed on the surface of the casing 1'of the light source device.

[0005]

By the way, not only the above-mentioned light source device but also the temperature of the light source device greatly exceeds the design value due to abnormal use such as failure of the device itself or excessive input of current from the power source to the lamp. There is a possibility that such a situation will occur.

However, it cannot be read from the cautionary statement written on the nameplate or the casing until such a situation occurs. Therefore, if the temperature of the light source device exceeds the designed value by mistake, the device itself and peripheral devices may be damaged, or a fire may occur.

For example, a light source device using a plastic material for the housing will be described as an example. The light source device using such a casing can suppress the temperature rise on the outer surface of the casing to a low level due to the physical properties of the plastic material having a lower thermal conductivity than metal. However, if the outer surface temperature of the housing exceeds the heat resistant temperature of the plastic material for some reason, the housing may be thermally deformed, melted, burnt, or the like, causing the above-described inconvenience.

The present invention has been made in view of the above-mentioned circumstances, and the temperature of the housing surface can be notified to the outside by visual information, and the operation can be performed while the housing temperature reaches a dangerous temperature range. It is an object of the present invention to provide a housing structure that can avoid continuation.

[0009]

In order to achieve the above-mentioned object, a casing structure according to claim 1 has a base material attached to the surface of the housing and a base material formed in a predetermined region of the base material at a specific temperature. And a temperature display section made of a temperature-sensitive substance whose hue changes. In the present invention corresponding to claim 2, information on the hue of the temperature display section is written on the base material in the vicinity of the temperature display section.

According to a third aspect of the present invention, there is provided a case structure, wherein a nameplate attached to the surface of the case and describing information on the temperature of the case surface, and a transparent base made of a translucent material and attached to the surface of the nameplate. A material and a temperature display portion made of a temperature-sensitive substance formed in a predetermined region of the transparent base material corresponding to the description region of the nameplate and having a hue changing at a specific temperature.

[0011]

In the case structure according to the first aspect, the hue of the temperature indicating portion formed in the predetermined region of the base material attached to the case surface changes according to the temperature change of the case surface. Therefore, the current housing surface temperature can be notified by the visible information that is the change in hue. For example, if a temperature-sensitive substance having a coloring temperature near the heat-resistant temperature of the device is used, a dangerous state in which the surface temperature of the casing exceeds the design value can be displayed in real time as visible information.

In the case structure according to the second aspect, since the information on the hue of the temperature display portion is written on the base material, the case surface temperature of the case is not required to be stored in advance even if the relationship between the hue and the temperature is not stored in advance. You can easily know the status.

In the case structure according to the third aspect, the same effect as the case structure according to the second aspect can be obtained by simply attaching the transparent base material and the temperature display unit to the existing nameplate. Can play.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the embodiments, the principle structure of the present invention will be described with reference to FIG. The present invention is configured by bringing a base material 11 on which a temperature-sensitive substance 10 whose hue changes in response to a required temperature is formed into close contact with one side surface 12a of a housing 12. As the temperature-sensitive substance 10, for example, a substance that reversibly changes between a hue 10-1 in a temperature range below a predetermined temperature and a hue 10-2 in a temperature range above a predetermined temperature is selected and used. The base material 11 may be a conventional nameplate such as metal or plastic, or may be a transparent film different from the nameplate. Examples of the present invention will be described below.

FIG. 2 is a perspective view of the housing structure according to the first embodiment. Reference numeral 20 shown in the figure is a casing that has a rectangular parallelepiped shape and forms the outer shape of the light source device, and internally includes a halogen lamp (not shown) that serves as a heat source.
A heat radiating plate 21 is formed on the upper surface of the housing 20 to release the heat inside, and a name plate 23 is attached to one side surface 22 of the housing 20 by a fixing means described later.

On the surface of the nameplate 23, a caution statement 24 for high temperature when the device is used is written above the nameplate 23, a temperature display portion 25 is formed in a lower corner, and a region corresponding to the temperature display portion 25 further below. A caution statement 26 indicating that the color development temperature of the temperature display unit 25 is set to the heat resistant temperature of the housing 20 is described in FIG.

The name plate 23 is made of a polyester resin thin plate as a base material, and the housing 2 is formed by an adhesive applied to the back surface.
The back surface is closely attached to the side surface 22 of No. 0.
The precautionary statements 24 and 26 written on the surface of the base material of the name plate 23 are
It is printed by screen printing.

The temperature display section 25 is formed by applying a temperature-sensitive coating material using cholesteric liquid crystal to a corresponding area on the base material. The temperature-sensitive paint of the temperature display unit 25 is set so that its color-developing temperature is the heat-resistant temperature of the material forming the housing 20. The hue exhibited by the temperature-sensitive paint of the temperature display unit 25 in the temperature range below the heat resistant temperature is referred to as a first hue, and the hue exhibited in the temperature range exceeding the heat resistant temperature is referred to as a second hue.

In the present embodiment having the above-described structure, when the light source device is driven to cause the halogen lamp contained in the housing 20 to emit light, the housing 20 is radiated and thermally conducted.
Surface temperature rises. Since the nameplate 23 is in close contact with the case 20, the surface temperature of the case 20 can be efficiently transmitted to the temperature display portion 25 of the nameplate 23.

The temperature display section 25 exhibits the first hue until the surface temperature of the case 20, that is, the temperature of the temperature display section 25 reaches the heat resistant temperature of the case material which is generally set as a design value.

An operator who operates the microscope device is required to operate the nameplate 23.
It is possible to know from the caution statement 24 that the housing 20 is at a high temperature and needs attention during the operation of the device and for a predetermined period thereafter. Moreover, it can be known from the caution statement 26 and the hue of the temperature display portion 25 that the surface temperature of the housing 20 is lower than the heat resistant temperature and the device is operating normally.

Further, due to a failure of the main body of the apparatus or an abnormal use such as an excessive input of current from the power source to the halogen lamp, a situation occurs in which the temperature of the light source apparatus greatly exceeds the heat resistant temperature, and the housing 20 It is assumed that the surface temperature exceeds the heat resistant temperature.

The surface temperature of the case 20 is constantly monitored by the temperature display section 25. When the surface temperature of the case 20 exceeds the heat resistant temperature, the hue of the temperature display section 25 changes from the first hue to the second hue. Change to hue. The operator of the microscope device immediately recognizes that the temperature of the light source device exceeds the heat resistant temperature and is in a dangerous state at the time when it is found that the temperature display unit 25 exhibits the second hue. You can

As described above, according to the present embodiment, the temperature condition of the housing 20 can be notified as the visible information by the hue of the temperature display portion 25 of the nameplate 20, and the temperature rise due to the failure or abnormal use of the main body of the apparatus. You can deal with it quickly. As a result, it is possible to prevent damage to the device itself and peripheral devices and fire from occurring due to use of the device in a state where the material of the casing 20 exceeds the heat resistant temperature, and avoid danger to the operator.

The temperature-sensitive substance used in the temperature display portion 25 of the nameplate 23 is not dependent on the driving force from the outside such as electric power,
Since the hue change is performed by the change of the crystal structure according to the temperature, the reliable operation can be expected without being affected by the failure on the device side.

FIG. 3 shows a housing structure according to the second embodiment of the present invention. The housing 20 has the same structure as that of the first embodiment described above. A name plate 27 is attached to one side surface 22 of the housing 20 by a predetermined fixing means, and a transparent plastic film 28 is attached to the surface of the name plate 27.

The name plate 27 has a caution sentence 24 that calls attention to high temperatures, and a caution sentence 26 that the coloring temperature of the temperature display section, which will be described later, is set to the heat resistant temperature of the housing 20.
Is added.

The plastic film 28 has the same outer shape as the name plate 27, and when attached to the name plate 27, the cautionary statement 26
A temperature display portion 29 is formed in a region close to. The temperature display portion 29 is made of the same material as that of the first embodiment described above, and is set under the same condition with respect to the hue change.

According to the present embodiment as described above, it is possible to obtain the same effects as those of the first embodiment, and it is possible to add the caution sentence 26 to the existing nameplate and divert it.

Although the nameplates 23 and 27 are made of a plastic material in the above embodiments, they may be made of a metal material such as aluminum. In such a case, the name plate is fixed to the housing 20 with an adhesive or a fastening member such as a stud. The present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention.

[0031]

As described in detail above, according to the present invention, the temperature of the surface of the housing can be notified to the outside by the visible information, and the operation can be continued while the housing temperature reaches the dangerous temperature range. It is possible to provide a housing structure that can avoid the above.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of the present invention.

FIG. 2 is a perspective view of a housing structure according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a housing structure according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a conventional housing structure using a nameplate in a light source device.

FIG. 5 is a perspective view of a conventional housing structure that does not use a nameplate in a light source device.

[Explanation of symbols]

10, 25, 29 ... Temperature display part, 11 ... Base material, 12, 2
0 ... Case, 23, 27 ... Name plate, 24, 26 ... Precautionary statement.

Claims (3)

[Claims] 1. In a housing structure containing a heat source, a temperature display section made of a base material attached to the surface of the housing and a temperature-sensitive substance formed in a predetermined region of the base material and having a hue changing at a specific temperature. A casing structure comprising: 2. The casing structure according to claim 1, wherein the base material is a nameplate in which information regarding a hue of the temperature display portion is written near the temperature display portion. 3. In a housing structure containing a heat source, a nameplate attached to the surface of the housing and describing information about the surface temperature of the housing, and a transparent material made of a translucent material and attached to the surface of the nameplate. A casing comprising: a base material; and a temperature display part formed in a predetermined area of the transparent base material corresponding to a description area of the nameplate and made of a temperature-sensitive substance whose hue changes at a specific temperature. Body structure.