JP2012013451A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a more visible liquid crystal display for an electronic device such as an electronic thermometer, a pedometer, a pulse oximeter, or a salinometer.SOLUTION: An electronic thermometer 100 for measuring body temperature comprises: a holder having an opening, the peripheral part of which supports an outer edge part of a liquid crystal panel member for display of the measured body temperature; and a case 101 having an opening through which the liquid crystal panel member supported by the holder is visible from outside. A side wall surface that forms the opening of the holder and a side wall surface that forms the opening of the case both slope such that the area of the openings increases toward outside. In addition, the side wall surfaces form a continuous slope surface.

Description

  The present invention relates to an electronic device for measuring biological information, and more particularly to an electronic device having a display unit such as an electronic thermometer, a pedometer, a pulse oximeter, and a salinity meter.

  2. Description of the Related Art Conventionally, electronic thermometers, pedometers, pulse oximeters, salinometers, and the like are known as electronic devices that measure biological information and display a liquid crystal display of measurement results as 7-segment numerical values. These electronic devices are being reduced in size and weight as a whole, and the size of the liquid crystal display unit is also limited, but from the viewpoint of visibility, the liquid crystal display unit is as much as possible within the range of the housing. It is desirable to design large.

  However, in the above-described electronic device, the conventional liquid crystal display unit cannot be said to have a sufficiently large opening with respect to the size of the casing (that is, taking full advantage of the size of the liquid crystal panel). However, there is a problem that an area where characters and the like are actually displayed (hereinafter referred to as “display effective area”) has become small. Furthermore, characters and the like displayed near the end of the opening can be visually recognized from the front direction of the opening, but are difficult to see when viewed from an oblique direction with respect to the opening, and the visible range. (Hereinafter referred to as “visible range”) is also narrow. Hereinafter, these problems will be briefly described with reference to FIGS.

  FIG. 7 is a diagram showing an external configuration of a conventional electronic thermometer 700, which is an example of an electronic apparatus that measures biological information and displays a liquid crystal display with a 7-segment numerical value. In FIG. 7, reference numeral 701 denotes a housing, 702 denotes a liquid crystal display unit, 703 denotes an end cap, and 704 denotes a power switch. FIG. 8 is a schematic diagram showing an AA cross section of the liquid crystal display unit 702 of FIG.

  As shown in FIG. 8, in the liquid crystal display unit 702, a holder 801 for fixing the liquid crystal panel 802 holds the outer edge portion of the liquid crystal panel 802 at the peripheral portion of the opening portion. In order to prevent a certain holder 801 from being seen from the outside, the peripheral portion of the opening of the housing 701 (the portion into which the protective member 803 is fitted) is located inside the outer edge of the opening of the holder 801. It is configured.

  For this reason, in the case of the conventional electronic thermometer 700, the display effective area is limited to the range indicated by the arrow 811, and the display effective area is smaller than necessary with respect to the liquid crystal panel 802. In addition, the visible range is also a range indicated by an arrow 812, and there is a problem that it is difficult to visually recognize characters or the like displayed on the peripheral portion of the opening of the housing 701 when viewed from an oblique direction.

  Therefore, it is desired to realize a liquid crystal display unit that is easier to see by enlarging the display effective area, increasing the size of characters to be displayed, and expanding the visible range.

  The present invention has been made in view of the above problems, and an object of the present invention is to realize a liquid crystal display unit that is easier to see in an electronic device that measures biological information and displays a measurement result on the liquid crystal display unit.

In order to achieve the above object, an electronic thermometer according to the present invention has the following configuration. That is,
An electronic device for measuring biological information,
A holder for holding the outer edge portion of the liquid crystal panel member for displaying the measured biological information at the peripheral portion of the opening;
A housing provided with an opening for making the liquid crystal panel member held by the holder visible from the outside, and
The side wall surface that forms the opening of the holder and the side wall surface that forms the opening of the housing are each inclined so that the opening area increases toward the outside, and the respective side wall surfaces Thus, a continuous inclined surface is formed.

  Further, the measured biological information is displayed in a region excluding the outer edge portion held by the peripheral portion of the opening of the holder in the liquid crystal panel member.

  In addition, a protective member that protects the liquid crystal panel member is attached to the opening of the housing in a state in which the liquid crystal panel member is visible from the outside, and the protective member is curved outward. It has a shape.

  The liquid crystal panel member has a width of 4 to 15 mm and a length of 20 to 40 mm.

  Further, the protective member and the opening of the housing are formed in two colors so as to be liquid-tight.

  In addition, the electronic device includes any one of an electronic thermometer, a pedometer, a pulse oximeter, and a salinometer.

  ADVANTAGE OF THE INVENTION According to this invention, in an electronic device which measures biological information in an electronic thermometer and displays a measurement result on a liquid crystal display part, it becomes possible to implement | achieve a liquid crystal display part which is easier to see.

It is a figure which shows the external appearance structure of the electronic thermometer 100 which concerns on one Embodiment of this invention. 1 is an exploded perspective view of an electronic thermometer 100. FIG. 2 is an exploded perspective view of a holder of the electronic thermometer 100. FIG. It is a figure for demonstrating the display effective area | region and visible range of the liquid crystal display part of the electronic thermometer. It is a figure for demonstrating the display effective area | region and visible range of an electronic thermometer 100 liquid crystal display part. It is a figure which shows the external appearance structure of the electronic device which concerns on other embodiment of this invention. It is a figure which shows the external appearance structure of the conventional electronic thermometer 700. FIG. It is a figure for demonstrating the character display area and visible range of the liquid crystal display part of the electronic thermometer.

  Hereinafter, the details of each embodiment of the present invention will be described with reference to the accompanying drawings as necessary. In addition, this invention is not limited to the following embodiment, It shall change suitably.

  In the following embodiments, an electronic thermometer will be mainly described as an example of an electronic device. However, the electronic device according to the present invention is not limited to the electronic thermometer.

[First Embodiment]
<1. External structure of electronic thermometer>
FIG. 1 is a diagram showing an external configuration of an electronic thermometer 100 according to an embodiment of the present invention. In FIG. 1, reference numeral 101 denotes a main body housing (housing 101) of the electronic thermometer 100 having a width of 13 to 18 mm, a length of 130 to 140 mm, a thickness of 10 to 15 mm, and a weight of 12 to 15 g. A housing (housing 102). The housing 102 is detachably attached to the housing 101.

  The casing 101 is made of an impact-resistant thermoplastic resin, such as butylene / styrene resin. The housing 102 is made of an impact-resistant thermoplastic resin, for example, a high impact polystyrene resin. Note that the housing 101 is formed of an opaque material because the liquid crystal display unit 104 is emphasized.

  Reference numeral 103 denotes an end cap. The end cap 103 is liquid-tightly coated with a metal such as stainless steel so that the body temperature of the subject can be easily conducted to the built-in temperature measurement unit (thermistor). Reference numeral 104 denotes a liquid crystal display unit that displays a subject's body temperature or the like as a body temperature measurement result.

<2. Internal structure of electronic thermometer>
FIG. 2 is an exploded perspective view for explaining the internal configuration of the electronic thermometer 100. In FIG. 2, reference numeral 200 denotes a holder. The holder 200 is mounted with a circuit board mounting area 201 on which a circuit board for calculating the body temperature of the subject is mounted based on the temperature measured by the temperature measuring unit, and a liquid crystal panel member for displaying the calculated body temperature. A liquid crystal panel member mounting area 202 and a battery mounting area 203 on which a battery for supplying power to the circuit board and the liquid crystal panel member is mounted.

  The holder 200 is inserted along the arrow from the insertion port 221 of the housing 101 and attached to the housing 101. In a state where the holder 200 is attached to the housing 101, the battery mounting area 203 is exposed to the outside of the housing 101, and is configured so that the user can easily replace the button-type battery.

  The housing 102 is attached to the housing 101 by inserting the fitting portion 231 along the arrow from the insertion port 221 in a state where the holder 200 is attached to the housing 101. The fitting portion 231 has a hollow structure, and its outer wall is fitted to the inner wall of the housing 101, and the inner wall inserts the battery mounting region 203 of the holder 200.

<3. Configuration of holder>
FIG. 3 is a diagram for explaining the configuration of the holder 200 of the electronic thermometer 100, and shows a state viewed from the back side of the electronic thermometer 100 (the surface opposite to the surface on which the liquid crystal display unit 104 is disposed). FIG.

  In FIG. 3, reference numeral 301 denotes a circuit board that calculates the body temperature of the subject based on the temperature measured by the temperature measuring unit. Reference numeral 302 denotes a liquid crystal panel member that displays the calculated body temperature. A button type battery 303 supplies power to the circuit board and the liquid crystal panel member. The circuit board 301, the liquid crystal panel member 302, and the two button batteries 303 are attached to the circuit board mounting area 201, the liquid crystal panel member mounting area 202, and the battery mounting area 203, respectively.

  The holder 200 is made of, for example, a crystalline thermoplastic resin mainly composed of structural units of (—CH 2 O—) called POM (polyoxymethylene), generally called polyacetal or acetal resin. It shall be formed.

<4. Cross-sectional configuration of liquid crystal display>
Next, a cross-sectional configuration of the liquid crystal display unit 104 will be described. 4 shows a cross-sectional configuration of the liquid crystal display unit 104 in a state in which the liquid crystal panel member 302 is held in the liquid crystal panel member mounting region 202 of the holder 200 and the holder 200 is attached to the housing 101 (the liquid crystal shown in FIG. It is a figure which shows the AA cross section of the display part 104; the cross section of a longitudinal direction.

  As shown in FIG. 4, the liquid crystal display unit 104 of the electronic thermometer 100 according to the present embodiment is a side on which the opening is formed in the liquid crystal panel member mounting region 202 of the holder 200 that holds the outer edge portion of the liquid crystal panel member 302. The feature is that the wall surface 431 is inclined (that is, the feature is that the opening area of the opening of the liquid crystal panel member mounting region 202 of the holder 200 is increased outward).

  In addition, the side wall surface 421 that forms the opening of the housing 101 (the portion into which the protective member 401 is fitted) is inclined (that is, the opening area of the opening of the housing 101 faces outward). Is characterized by the fact that it is larger).

  Furthermore, the side wall surface 431 that forms the opening of the liquid crystal panel member mounting region 202 of the holder 200 that holds the outer edge portion of the liquid crystal panel member 302 and the side wall surface 421 of the opening of the housing 101 have the same inclination angle ( A feature is that a continuous inclined surface (inclination angle α: 50 to 60 degrees) is formed at α). Even if the inclination angle (α) is smaller than 50 degrees or larger than 60 degrees, the display effective area (411) cannot be made large. Further, the effective display area (411) can be made larger by making the thickness (T1) of the opening equal to or smaller than the thickness (T) of the liquid crystal panel member 302.

  In the electronic thermometer 100 according to the present embodiment, the liquid crystal panel member 302 has a width (W) of 4 to 15 mm, a length (L) of 20 to 40 mm, and a thickness (T) of 1.5 to 2.0 mm. Suppose there is. The dimensions of the opening of the liquid crystal panel member mounting area 202 of the holder 200 are assumed to be a width (W) of 3.5 to 13.5 mm and a length (L) of 19 to 39 mm. Further, the protective member 401 is formed of a transparent thermoplastic resin as a window member of the liquid crystal panel member 302, and has dimensions of a width (W) of 4 to 15 mm and a length (L) of 20 to 40 mm. Note that the housing 101 and the protective member 401 are not fitted, but are formed by two-color molding, whereby the liquid tightness of the electronic thermometer 100 is maintained.

  By having the shape as described above, the holder 200 that is an internal member is formed even if the peripheral portion of the opening of the holder 200 that holds the outer peripheral portion of the liquid crystal panel member 302 is not covered by the peripheral portion of the protective member 401. The user's uncomfortable feeling about being exposed can be reduced.

  As a result, the display effective area (411) can be shown larger than that of the conventional electronic thermometer (in the case of the conventional electronic thermometer 700, the housing 701 has a larger area than the peripheral portion of the opening of the holder 801). The display effective area (811) was smaller than the opening of the holder 801 because the peripheral portion of the opening was arranged on the inside, whereas in the case of the electronic thermometer 100 according to the present embodiment, the display The effective area can be the same area as the opening of the holder 200).

  Furthermore, by having the shape as described above, the viewable range 412 can be enlarged. Even when viewed from an oblique direction, characters displayed on the outer edge portion of the opening of the housing 601, etc. Can be easily visually recognized.

  As is clear from the above description, in the present embodiment, the side wall surface that forms the opening in the holder 200 that holds the outer edge portion of the liquid crystal panel member 302 and the side wall surface that forms the opening of the housing 101 are divided. Each of the side walls is inclined and the side wall surfaces of the holder 200 when the holder 200 is attached to the housing 101 are configured to form the same inclined surface.

  As a result, the display effective area can be increased, the size of characters to be displayed can be increased, the visible range can be expanded, and a liquid crystal display unit that is easier to view can be realized. It was.

  In addition, although only the shape of the AA cross section was demonstrated in the said description, it is good also considering a BB cross section as the same shape as the said AA cross section. By making both the AA cross section and the BB cross section have the above-mentioned shape, the visible range in both the width direction and the longitudinal direction of the liquid crystal panel member 302 is expanded, so that a liquid crystal display section that is easier to see can be realized. It becomes possible.

[Second Embodiment]
In the first embodiment, the case where the shape of the protective member fitted into the opening of the housing 101 is a plane has been described. However, the present invention is not limited to this, and the protective member has, for example, a curved shape. You may have.

  FIG. 5 illustrates a cross-sectional configuration of the liquid crystal display unit 104 in a state where the liquid crystal panel member 302 is held in the liquid crystal panel member mounting region 202 of the holder 200 and the holder 200 is attached to the housing 101 (the liquid crystal panel of FIG. It is a figure which shows the AA cross section of the display part 104. FIG.

  The difference from FIG. 4 is that the protective member 501 has a curved shape toward the outside, and there are no changes in dimensions and the like. As described above, the shape of the protective member fitted into the opening of the housing 101 is a curved shape, so that reflection of light on the protective member 501 is suppressed even when the liquid crystal display unit 104 is viewed obliquely. In addition, an additional effect that the size of the liquid crystal display unit 104 can be felt larger than that of the planar shape can be obtained.

  In the present embodiment, the BB cross section may have the same shape as the AA cross section. By making both the AA cross section and the BB cross section have the above-mentioned shape, the visible range in both the width direction and the longitudinal direction of the liquid crystal panel member 302 is expanded, so that a liquid crystal display section that is easier to see can be realized. It becomes possible.

  In the first embodiment, the color of the holder 200 is not particularly mentioned. However, in order to further reduce the user's uncomfortable feeling that the holder 200 as an internal member is exposed, for example, a liquid crystal panel is used. A color similar to the color of the member 302 is desirable.

[Third Embodiment]
In the first and second embodiments, the electronic thermometer has been described as an example of the electronic device. However, the electronic device of the present invention is not limited to the electronic thermometer, and is a device that measures other biological information. May be.

  FIG. 6 shows another embodiment of the electronic apparatus, and the cross-sectional configuration of the display unit is the same as that of FIG. 4 or FIG.

  6A shows a pulse oximeter, FIG. 6B shows a pedometer, FIG. 6C shows a salinometer, and FIG. 6D shows a highly functional female thermometer.

  As shown in FIG. 6A, the pulse oximeter includes a housing 601, a liquid crystal display unit 604, and a control unit (not shown), and the oxygen saturation level in the blood calculated based on the measured far infrared rays. Is displayed on the liquid crystal display unit 604 together with the pulse rate or alternately with the pulse rate.

  Further, as shown in FIG. 6B, the pedometer includes a housing 611, a liquid crystal display unit 614, and a control unit (not shown), and calculates the number of steps measured by a three-dimensional acceleration sensor (not shown). The number, calorie consumption, walking distance, etc. are displayed on the liquid crystal display unit 614 together or alternately.

  As shown in FIG. 6C, the salinity meter includes a housing 621, a liquid crystal display unit 624, and a control unit (not shown), and the salinity concentration detected and calculated by the sensor 625 is supplied to the liquid crystal display unit 624. indicate.

  Further, as shown in FIG. 6 (d), the high-performance female thermometer includes a housing 631, a liquid crystal display unit 634, and a control unit (not shown), and is measured and calculated by a temperature measuring unit 635 in which a thermistor is built. The body temperature value is displayed on the liquid crystal display unit 634 together with the date and time.

DESCRIPTION OF SYMBOLS 100 ... Electronic thermometer, 101 ... Case, 102 ... Case, 103 ... End cap, 104 ... Liquid crystal display part, 200 ... Holder, 201 ... Circuit board mounting area 202 ... Liquid crystal panel member mounting region, 203 ... Battery mounting region, 221 ... Insertion port, 231 ... Fitting part, 301 ... Circuit board, 302 ... Liquid crystal panel member, 303 ... button-shaped battery, 401 ... protective member, 411 ... display effective area, 412 ... visible range, 421 ... side wall surface, 431 ... side wall surface, 501 ... protective member 700 ... conventional electronic thermometer, 701 ... housing, 702 ... liquid crystal display, 703 ... end cap, 704 ... power switch, 801 ... holder, 802 ... liquid crystal Panel member, 803 ... protection Wood, 811 ... display the effective range, 812 ... visible range

Claims (6)

An electronic device for measuring biological information,
A holder for holding the outer edge portion of the liquid crystal panel member for displaying the measured biological information at the peripheral portion of the opening;
A housing provided with an opening for making the liquid crystal panel member held by the holder visible from the outside, and
The side wall surface that forms the opening of the holder and the side wall surface that forms the opening of the housing are each inclined so that the opening area increases toward the outside, and the respective side wall surfaces An electronic thermometer characterized in that a continuous inclined surface is formed.   2. The electronic apparatus according to claim 1, wherein the measured biological information is displayed in a region of the liquid crystal panel member excluding an outer edge portion held by a peripheral edge portion of the opening of the holder. A protective member for protecting the liquid crystal panel member is attached to the opening of the housing in a state where the liquid crystal panel member is visible from the outside.
The electronic device according to claim 2, wherein the protection member has a shape curved outward.   The electronic apparatus according to claim 3, wherein the liquid crystal panel member has a width of 4 to 10 mm and a length of 20 to 40 mm.   The electronic device according to claim 3, wherein the protective member and the opening of the housing are molded in two colors so as to be liquid-tight.   The electronic device according to any one of claims 1 to 5, wherein the electronic device is any one of an electronic thermometer, a pedometer, a pulse oximeter, and a salinity meter.