JP4171117B2 - Radiation thermometer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiation thermometer that measures the body temperature of a living body by detecting the amount of infrared rays emitted from the ear canal.
[0002]
[Prior art]
Conventionally, as a thermometer, there is a radiation thermometer that detects the amount of infrared rays emitted from the inside of the ear canal, converts it into a body temperature and displays it, and these can be measured in a short time against a contact type using mercury or a thermocouple There are features.
[0003]
As a general example, what is disclosed in JP-A-6-165 will be described with reference to FIG. As shown in FIG. 8, the radiation thermometer includes a probe 1, a light guide tube 2 that runs in the length direction of the probe 1, and a photoelectric converter that converts infrared radiation intensity propagated in the light guide tube 2 into an electrical signal. (Infrared sensor) 3 and temperature conversion means (measuring circuit) 4 for measuring the temperature from the converted electric signal.
[0004]
By inserting the probe 1 into the ear canal, the infrared sensor 3 receives infrared rays emitted from the eardrum and the vicinity thereof, outputs an electrical signal correlated with the amount of received infrared rays, and the measurement circuit 4 determines from the electrical signal. The temperature of the eardrum and the vicinity thereof is converted.
[0005]
On the other hand, in recent years, it has been difficult for a visually impaired person such as an elderly person or a visually handicapped person to know the measured body temperature only by notifying the result of display.
[0006]
In FIG. 7, the measurement circuit 15 converts the electrical signal from the contact-type temperature sensor 14 into a temperature, and the voice synthesis circuit 5 synthesizes voice by combining voice phrases recorded in the built-in ROM according to the output of the measurement circuit 15. Notification from the speaker 6.
[0007]
The speaker 6 is fixed to the inside of the main body 7, but by providing the sound hole 11 in the portion where the speaker 6 is fixed, the sound emitted from the upper part of the speaker 6 is efficiently emitted to the outside of the main body 7, and the lower part of the speaker 6. The sound emitted more is confined inside the main body 7. The sounds emitted from the upper and lower parts of the speaker 6 are opposite in phase, and when they are heard at the same time, they cancel each other out and sound unclear. However, by separating these sounds and letting the user hear only the sound from the upper part, a clear sound quality is achieved. Can be obtained.
[0008]
[Problems to be solved by the invention]
However, in the case of a radiation thermometer that measures eardrum temperature, the probe is inserted into the ear canal during measurement, so it is difficult to hear the sound clearly, and it is desirable to emit the sound from within the probe. Since an infrared sensor is mounted on the PC, there is a problem that it is impossible to mount the speaker with the speaker facing directly toward the ear.
[0009]
Therefore, the speaker is mounted in the radiation thermometer main body in an arbitrary direction, and the sound in this case is transmitted to the ear by vibration through the infrared sensor and the probe.
[0010]
Since the speaker vibrates the air by shaking the cone and emits sound, the sound emitted from the top and bottom of the speaker is in reverse phase, and if mixed in the same thermometer body, they cancel each other out and are There was a problem that the sound quality became clear.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a radiation thermometer main body, an infrared sensor that receives infrared rays emitted from the eardrum and the vicinity thereof, and a probe that is inserted into an ear canal and that has an infrared passage section that passes the infrared rays at the tip. A temperature converting means for converting the temperature of the eardrum and the vicinity thereof based on an output signal of the infrared sensor , a sound signal converting means for converting a conversion result of the temperature converting means into a sound signal, and a sound signal being converted into sound. and speakers, other in contact with or close to one is open end cone portion of the speaker has a tubular current clef closed end, the cylindrical sound collecting unit than the cone portion of the speaker The emitted sound is confined and attenuated, and the sound is emitted from the side opposite to the cone portion of the speaker in the radiation thermometer body.
[0012]
According to the above invention, the light receiving unit housed in the infrared sensor receives only infrared rays emitted from the eardrum and the vicinity thereof and passed through the infrared passing portion of the probe, and the temperature conversion means converts the temperature based on the output signal of the light receiving unit. Do. The audio signal conversion means transmits an audio signal to the speaker in accordance with the output of the temperature conversion means. Since the cylindrical sound collecting part collects and attenuates the sound emitted from the cone part side of the speaker, only the sound emitted from the opposite side of the speaker cone part is transmitted through the inside of the radiation thermometer main body and The infrared sensor and the probe are vibrated, and the notification sound is guided to the ear canal through the probe.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A radiation thermometer according to claim 1 of the present invention is a probe including a radiation thermometer body, an infrared sensor that receives infrared rays emitted from the eardrum and the vicinity thereof, and an infrared passage portion that is inserted into an ear canal and passes the infrared rays at a tip thereof. A temperature converting means for converting the temperature of the eardrum and the vicinity thereof based on an output signal of the infrared sensor , an audio signal converting means for converting the conversion result of the temperature converting means into an audio signal, and converting the audio signal into audio speaker and the other in contact with or close to one is open end cone portion of the speaker has a tubular current clef closed end, the cylindrical sound collecting unit is the cone portion of the speakers attenuated by collecting only the unwanted sound is more emitted, wherein the radiation thermometer body and configured to emit only valid voice from the opposite side to the cone portion of the speaker Than is.
[0014]
The infrared sensor receives only infrared rays emitted from the eardrum and the vicinity thereof and passed through the infrared passage portion of the probe, and the temperature conversion means performs temperature conversion based on the output signal of the light reception portion. The audio signal conversion means outputs an audio signal in accordance with the output of the temperature conversion means, and the speaker converts the audio signal into audio. Since the cylindrical sound collection part is arranged so as to cover the cone part side of the speaker , only the sound emitted from the cone part side is collected and muted, so that the sound emitted from the opposite side of the speaker cone part A clear notification voice can be obtained without canceling.
[0015]
In addition, the radiation thermometer according to claim 2 of the present invention is configured such that the cylindrical sound collecting portion has one or a plurality of openings toward the outer periphery of the main body. And the cylindrical sound collecting part emits only the sound emitted from the cone part side of the speaker from the open part to the outer body of the main body, thereby effecting the sound notification to the ear on the opposite side, and mute the reverse phase sound from within the main body Create an effect.
[0016]
According to a third aspect of the present invention, the radiation thermometer is configured such that the cylindrical sound collecting portion is open to the adjacent battery compartment. The cylindrical sound collecting part improves the noise reduction effect by leaking sound from the opened part to the battery housing part partitioned from the radiation thermometer main body.
[0017]
A radiation thermometer according to claim 4 of the present invention is configured to have, for example, a sponge-like sound absorbing material in the cylindrical sound collecting portion. And since a sound-absorbing material directly absorbs the sound from the cone part side of a speaker, the silencing effect can be improved and the sound can be clarified as in the third aspect.
The radiation thermometer according to claim 5 of the present invention is configured such that the speaker is installed upward on the printed circuit board.
The radiation thermometer according to claim 6 of the present invention is configured such that sound emitted from the side opposite to the cone portion of the speaker vibrates the infrared sensor.
The radiation thermometer according to claim 7 of the present invention is configured such that sound emitted from the side opposite to the cone portion of the speaker vibrates the probe.
[0018]
【Example】
(Example 1)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of a radiation thermometer of the present invention. FIG. 2 is a block diagram of the speech synthesis unit.
In FIG. 1, a radiation thermometer converts a probe 1, a reflection lens 2 that reflects and collects infrared rays from the ear that has passed through the probe 1, and a radiation intensity of infrared rays collected by the reflection lens 2 into an electrical signal. An infrared sensor 3 and a measurement circuit 4 that measures temperature from the converted electrical signal are provided.
[0019]
By inserting the probe 1 into the ear canal, the infrared sensor 3 receives infrared rays emitted from the eardrum and the vicinity thereof, outputs an electrical signal correlated with the amount of received infrared rays, and the measurement circuit 4 determines from the electrical signal. The temperature of the eardrum and the vicinity thereof is converted.
[0020]
In FIG. 2, the speech synthesizer includes a speech synthesizer 5 and a speaker 6, and the speech synthesizer 5 synthesizes speech by combining speech phrases recorded in the built-in ROM according to the output of the measurement circuit 4, and notifies the speaker 6. To do.
Normally, the speaker 6 should be placed toward the ear on the extension of the probe 1, but since it is a radiation thermometer that measures the temperature near the eardrum, the reflection lens 2 and the infrared sensor 3 are always installed at this position. Therefore, it is necessary to install the speaker 6 by another method.
[0021]
In FIG. 1, the speaker 6 is installed upward on a P plate 8 fixed inside the main body 7. However, as described in the problem section, the opposite phase sounds from the upper part / lower part of the speaker 6 cancel each other and become unclear sound. The parts 9 are arranged close to each other. Since the cylindrical sound collecting portion 9 is composed of a rib protruding from the inner wall of the main body 7 and the upper portion is a closed end, only the sound emitted from the upper portion of the speaker 6 (hereinafter referred to as unnecessary sound) is the tube. The reflection is repeated in the inside of the sound collecting unit 9 and attenuated significantly. On the other hand, sound emitted from the lower part (hereinafter referred to as effective sound) passes through the inside of the main body 7 without being mixed with unnecessary sound and vibrates around the infrared sensor 3 and the reflection lens 2 and passes through the probe 1 to the auditory canal. Therefore, a clear voice can be provided to the user.
[0022]
(Example 2)
Next, a configuration diagram of a radiation thermometer according to a second embodiment of the present invention will be described with reference to FIG. In FIG. 4, 6 is a speaker, 9 is a cylindrical sound collecting unit, and 7 is a main body. Similar to the first embodiment, the cylindrical sound collecting portion 9 is constituted by a rib protruding from the inner wall of the main body 7, but differs from the first embodiment in that it has an opening 11 leading to the outer shell at the top. .
[0023]
By providing the opening 11, unnecessary sound leaks out of the main body. In the first embodiment, since the unnecessary sound is confined in the cylindrical sound collecting section 9, the cylindrical sound collecting section 9 itself is vibrated when attenuated by reflection, and a part of the unnecessary sound is contained in the main body. However, the unnecessary sound is attenuated more effectively by coming out from the opening of the main body 7, and the unnecessary sound that has gone outside is not heard by the ear on the side where the probe is not inserted. The sound quality can be further clarified.
[0024]
(Example 3)
Next, a configuration diagram of a radiation thermometer according to a third embodiment of the present invention will be described with reference to FIG. In FIG. 4, 6 is a speaker, 9 is a cylindrical sound collecting portion, 7 is a main body, and 10 is a battery housing portion adjacent to the main body 7. The cylindrical sound collecting unit 9 and the battery storage unit 10 are connected by an opening 12, and unnecessary sound leaks into the battery storage unit 10.
[0025]
Basically, as in the second embodiment, there is an effect of effectively attenuating unnecessary sound in the cylindrical sound collecting section 9, but it is opened in the outer part of the main body * in terms of design restrictions and waterproof effect. There is a case where a part cannot be provided. The battery compartment * is separated from the inside of the main body 7 for the reason that the user replaces the battery, and has an internal volume corresponding to the size of the battery, and is unnecessary more effectively by releasing unnecessary sound here. The sound can be attenuated.
[0026]
Example 4
Next, a configuration diagram of a radiation thermometer according to a fourth embodiment of the present invention will be described with reference to FIG. In FIG. 5, 6 is a speaker, 9 is a cylindrical sound collecting unit, 7 is a main body, and 13 is a sound absorbing material disposed inside the cylindrical sound collecting unit 9. Since the sound absorbing material 13 is made of, for example, a soft material on a sponge to absorb unnecessary sound, the unnecessary sound can be attenuated by a synergistic effect with leakage to the outside through the opening 12.
[0027]
【The invention's effect】
As described above, the radiation thermometer of the present invention has the following effects.
[0028]
According to the radiation clinical thermometer according to claim 1 of the present invention, to attenuate confine the unwanted sound emanating from the cone side of the speaker tubular current clef in contact or in close proximity to the cone side of the speaker connected to the voice synthesis circuit As a result, it is possible to efficiently transmit the effective sound emitted from the side opposite to the cone portion of the speaker to the probe and the auditory canal without mixing the sounds in opposite phases.
[0029]
According to the radiation thermometer according to claim 2 of the present invention, unnecessary sound is effectively attenuated inside the main body by providing unnecessary sound outside the main body by providing an opening in the outer shell of the main body from the cylindrical sound collecting portion. It is possible to transmit sound to an ear that is not measured by the user or to an ear other than the user. For example, even when the measurer and the person to be measured are different, such as when the mother measures the temperature of the child or the doctor measures the temperature of the patient, the measurer can know the measurement result by voice.
[0030]
According to the radiation thermometer according to claim 3 of the present invention, by providing an opening between the cylindrical sound collecting part and the battery housing part, unnecessary sound is attenuated more effectively and no opening is provided in the outer shell of the main body. Therefore, it does not affect the design restrictions or waterproof effect.
[0031]
According to the radiation thermometer of claim 4 of the present invention, the sound quality is improved by attenuating unnecessary sound by providing a sound absorbing material in the cylindrical sound collecting portion. By combining with, you can produce a greater synergistic effect.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a radiation thermometer in Embodiment 1 of the present invention. FIG. 2 is a block diagram of a speech synthesis unit of the radiation thermometer. FIG. 3 is a configuration diagram of a radiation thermometer in Embodiment 2 of the present invention. FIG. 5 is a block diagram of a radiation thermometer according to Embodiment 4 of the present invention. FIG. 6 is a block diagram of a radiation thermometer according to Embodiment 4 of the present invention. Block diagram of the speech synthesizer in the [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Probe 2 Reflective lens 3 Infrared sensor 4 Measurement circuit 5 Speech synthesis circuit 6 Speaker 7 Main body 8 P board 9 Cylindrical sound collection part 10 Battery accommodating part 11 Opening part 12 Opening part 13 Sound absorption material

Claims (7)

A thermometer main body, an infrared sensor that receives infrared rays emitted from the eardrum and the vicinity thereof, a probe that is inserted into an ear canal and that passes through the infrared ray at the tip, and the eardrum based on an output signal of the infrared sensor A temperature conversion means for converting the temperature in the vicinity thereof, an audio signal conversion means for converting the conversion result of the temperature conversion means into an audio signal, a speaker for converting the audio signal into audio, and a cone portion side of the speaker. Alternatively, it has a cylindrical sound collecting part which is close and one is an open end and the other is a closed end, and the cylindrical sound collecting part confines and attenuates the sound emitted from the cone part side of the speaker, and the radiation temperature A radiation thermometer configured to emit sound from a side opposite to the cone portion of the speaker in the meter body.   2. The radiation thermometer according to claim 1, wherein the cylindrical sound collecting portion has a single or a plurality of openings that communicate with an outline of the radiation thermometer main body at a closed end thereof.   The radiation thermometer according to claim 1, wherein the radiation thermometer main body has a battery housing portion that is partitioned and adjacent to each other, and the cylindrical sound collecting portion has an opening with respect to the battery housing portion.   The radiation thermometer according to claim 1, wherein the cylindrical sound collecting portion has a sound absorbing material inside. The radiation thermometer according to claim 1, wherein the speaker is installed upward on a printed circuit board. The radiation thermometer according to claim 1, wherein a sound emitted from a side of the speaker opposite to the cone portion vibrates the infrared sensor. The radiation thermometer according to claim 1, wherein sound emitted from a side of the speaker opposite to the cone portion vibrates the probe.

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