Physiological signal measurement device

A physiological signal measurement device includes a housing, a bracket, a rigid circuit board fastened in the housing, a first flexible circuit board assembled in the housing and the in-ear portion, and a protective sleeve. The housing protrudes frontward to form an in-ear portion. The bracket has a base portion fastened to the in-ear portion. Several portions of a front surface of the base portion protrude frontward to form a plurality of first elastic portions. The first flexible circuit board has a resilient end. The resilient end of the first flexible circuit board surrounds the plurality of the first elastic portions. The protective sleeve has a fastening portion, and a plurality of spaced second elastic portions protruded from the fastening portion. The plurality of the spaced second elastic portions surround the plurality of the first elastic portions and the resilient end of the first flexible circuit board.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention generally relates to a measurement device, and more particularly to a physiological signal measurement device.

2. The Related Art

Conventionally, various different measurement devices are needed for proceeding measuring physiological data of human body. In order to make people be capable of knowing the physiological data of the human body anywhere at any time, the various different measurement devices are developed towards a miniaturization direction or integrated in other electronic devices.

In order to promote usage rates and applicabilities of the various different measurement devices, a conventional physiological signal measurement device is disposed to an earphone for measuring vessels of an auricle of a user, so that various physiological data of the user, such as heart rate data, heart rate variability data or other data are calculated. The conventional physiological signal measurement device includes a light emitter, a light sensor, and a microprocessor electrically connected with the light emitter and the light sensor. The light emitter emits a light source to skin of the auricle of the user. The light sensor receives a light source emitted from the light emitter and reflected by the skin of the auricle of the user for a while to draw a group of continuous varying waveforms and transmit the group of the continuous varying waveforms to a microprocessor. The microprocessor cooperates with an analytical method of the various physiological data to record variations of physiological statuses of the user per unit time.

However, when the user uses the conventional physiological signal measurement device, external light rays will also shine on the skin of the auricle of the user, the light source received by the light sensor will suffer interferences of the external light rays that makes the data measured by the conventional physiological signal measurement device inaccurate.

Thus, in order to overcome the above-mentioned problems, an innovative physiological signal measurement device is essential to be provided, the innovative physiological signal measurement device is capable of avoiding suffering the interferences of the external light rays and making data measured by the innovative physiological signal measurement device accurate.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a physiological signal measurement device. The physiological signal measurement device includes a housing, a bracket, a rigid circuit board, a first flexible circuit board and a protective sleeve. A front surface of the housing protrudes frontward to form a hollow in-ear portion. The bracket has a base portion fastened to a front end of the in-ear portion. Several portions of a front surface of the base portion protrude frontward to form a plurality of first elastic portions arranged in a ring shape. The rigid circuit board is fastened in the housing. The rigid circuit board is equipped with a microprocessor. The first flexible circuit board is assembled in the housing and the in-ear portion. The first flexible circuit board has a fastening end and a resilient end. The fastening end of the first flexible circuit board is electrically connected with the rigid circuit board. The resilient end of the first flexible circuit board projects beyond the front surface of the base portion and surrounds the plurality of the first elastic portions. An outside of the resilient end of the first flexible circuit board is equipped with a plurality of light emitters and a plurality of light sensors. Each of the plurality of the first elastic portions is corresponding to one of the plurality of the light emitters and one of the plurality of the light sensors. The plurality of the light emitters and the plurality of the light sensors of the first flexible circuit board are electrically connected with the microprocessor of the rigid circuit board by virtue of the first flexible circuit board. The protective sleeve has a fastening portion, and a plurality of spaced second elastic portions protruded from a front surface of the fastening portion and arranged in a ring shape. The fastening portion is fastened to root portions of outer sides of the plurality of the first elastic portions. The plurality of the spaced second elastic portions surround free ends of the plurality of the first elastic portions and the outside of the resilient end of the first flexible circuit board. The plurality of the light emitters and the plurality of the light sensors are clamped between the plurality of the first elastic portions and the plurality of the spaced second elastic portions.

As described above, when the physiological signal measurement device is in use, the plurality of the first elastic portions and the plurality of the spaced second elastic portions all stretch into an external auditory canal of a user by virtue of the plurality of the light emitters and the plurality of the light sensors of the first flexible circuit board of the physiological signal measurement device are clamped between the plurality of the first elastic portions and the plurality of the spaced second elastic portions, the plurality of the first elastic portions occur an inward slight deformation by virtue of skin of the external auditory canal pushing against the plurality of the spaced second elastic portions to make the plurality of the first elastic portions and the plurality of the spaced second elastic portions generate an outward pushing force, so that an outer surface of each of the plurality of the spaced second elastic portions is neatly adhered to the skin of the external auditory canal, after the plurality of the first elastic portions occur the deformation, a distance between the skin of the external auditory canal, and the plurality of the light emitters and the plurality of the light sensors of the first flexible circuit board is still kept being constant, various physiological data measured by the physiological signal measurement device are ensured to be accurate, in addition, the plurality of the light emitters of the first flexible circuit board emit light sources to shine the skin of the external auditory canal, the plurality of the light sensors are capable of avoiding interferences of external light rays at the time of the plurality of the light sensors receiving reflected light sources reflected by the skin of the external auditory canal, so that the various physiological data measured by the physiological signal measurement device are further ensured to be accurate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

With reference toFIG. 1andFIG. 2, a physiological signal measurement device100in accordance with a preferred embodiment of the present invention is shown. The physiological signal measurement device100is a Bluetooth earphone having a physiological signal measurement function. The physiological signal measurement device100includes a housing10, a bracket20, a rigid circuit board30, a first flexible circuit board40, a battery50, a protective sleeve60, a loudspeaker70, a second flexible circuit board80and an earplug90.

Referring toFIG. 1andFIG. 2again, the housing10includes a rear cover11, and a front cover12covered to a front end of the rear cover11. A front surface of the housing10protrudes frontward to form a hollow cylinder-shaped in-ear portion121. After the front cover12is covered to the rear cover11, a receiving chamber13is formed between the front cover12and the rear cover11. A front of the front cover12opens a through-hole123communicated between an outside and an inside of the front cover12. The front of the front cover12protrudes frontward to form the hollow cylinder-shaped in-ear portion121located in front of and communicated with the through-hole123. Specifically, a front surface of a peripheral wall of the through-hole123protrudes frontward to form the in-ear portion121. A front surface of the in-ear portion121opens an annular assembling slot122.

Referring toFIG. 2andFIG. 3, the bracket20has a base portion21. A middle of the base portion21opens a sound hole22. A periphery of a rear surface of the base portion21protrudes rearward to form a ring-shaped assembling block23. Several portions of a front surface of the base portion21protrude frontward to form a plurality of first elastic portions24arranged in a ring shape. Each two of the plurality of the first elastic portions24are spaced from each other to form a gap26. Specifically, the plurality of the first elastic portions24are arranged around the sound hole22. The base portion21opens a rectangular opening25corresponding to an outer side of one of the plurality of the first elastic portions24. The base portion21is fastened to a front end of the in-ear portion121. Specifically, the assembling block23is fastened in the assembling slot122of the in-ear portion121.

Referring toFIG. 2,FIG. 3andFIG. 7, the rigid circuit board30is fastened in the receiving chamber13of the housing10. The rigid circuit board30is equipped with a microprocessor31and a wireless transmission module (not shown).

Referring toFIG. 1toFIG. 7, the first flexible circuit board40is assembled in the receiving chamber13of the housing10and the in-ear portion121. The first flexible circuit board40has a fastening end41and a resilient end42. The fastening end41of the first flexible circuit board40is electrically connected with the rigid circuit board30. The resilient end42of the first flexible circuit board40has a plurality of protruding portions46. Each of the plurality of the protruding portions46are spaced from each other to form a notch43. The plurality of the protruding portions46surround a substantially barrel shape. The resilient end42of the first flexible circuit board40passes through the opening25. The resilient end42of the first flexible circuit board40projects beyond the front surface of the base portion21and surrounds the plurality of the first elastic portions24. The resilient end42of the first flexible circuit board40is disposed to the outer sides of the plurality of the first elastic portions24. Specifically, one of the plurality of the protruding portions46passes through the opening25. The plurality of the protruding portions46project beyond the front surface of the base portion21and are separately disposed to the outer sides of the plurality of the first elastic portions24. The gap26of each two first elastic portions24is corresponding to one of the plurality of the notches43. An outside of the resilient end42of the first flexible circuit board40is equipped with a plurality of light emitters44and a plurality of light sensors45. Each of the plurality of the first elastic portions24is corresponding to one of the plurality of the light emitters44and one of the plurality of the light sensors45. Two portions of an outer surface of each of the plurality of the protruding portions46of the first flexible circuit board40separately corresponding to the plurality of the first elastic portions24are equipped with the one of the plurality of the light emitters44and the one of the plurality of the light sensors45. The plurality of the light emitters44and the plurality of the light sensors45of the first flexible circuit board40are electrically connected with the microprocessor31of the rigid circuit board30by virtue of the first flexible circuit board40.

Referring toFIG. 2andFIG. 3, the battery50is assembled in the receiving chamber13of the housing10and is disposed to a front surface of the rigid circuit board30. The battery50is electrically connected with the rigid circuit board30for providing a power source needed by the physiological signal measurement device100in accordance with the present invention.

Referring toFIG. 1toFIG. 4again, the protective sleeve60is made of transparent soft material. The transparent soft material is soft rubber or soft plastic. The protective sleeve60has a fastening portion61, and a plurality of spaced second elastic portions63protruded from a front surface of the fastening portion61and arranged in a ring shape. A rear end of an outer peripheral surface of the fastening portion61opens a ring-shaped wedging slot62for assembling the earplug90. The protective sleeve60is formed by an integrated molding technology. The fastening portion61is fastened to root portions of the outer sides of the plurality of the first elastic portions24. The protective sleeve60is of a hollow bullet shape. An interval65is formed between each two of the plurality of the spaced second elastic portions63. The protective sleeve60surrounds the bracket20and the resilient end42of the first flexible circuit board40. The plurality of the spaced second elastic portions63surround free ends of the plurality of the first elastic portions24and the outside of the resilient end42of the first flexible circuit board40. The plurality of the spaced second elastic portions63surround the plurality of the protruding portions46. The plurality of the spaced second elastic portions63are corresponding to the plurality of the first elastic portions24separately and are corresponding to the plurality of the protruding portions46separately. The interval65of each two spaced second elastic portions63is corresponding to the gap26of two of the plurality of the first elastic portions24and the notch43of two of the plurality of the protruding portions46. The plurality of the light emitters44and the plurality of the light sensors45of the first flexible circuit board40are clamped between the plurality of the first elastic portions24and the plurality of the spaced second elastic portions63. The protective sleeve60further includes a fastening block64molded with a rear surface of the fastening portion61. The fastening block64surrounds an outer side of the first flexible circuit board40. Specifically, the fastening block64surrounds the one of the plurality of the protruding portions46and is received in the opening25.

Referring toFIG. 1,FIG. 2FIG. 3andFIG. 5, the loudspeaker70is assembled in the in-ear portion121and is electrically connected with the rigid circuit board30by virtue of an electric wire (not shown). The second flexible circuit board80is assembled in the receiving chamber13of the housing10and is disposed to a bottom surface of the battery50. The second flexible circuit board80is electrically connected with the rigid circuit board30. The second flexible circuit board80is equipped with at least one microphone81. The second flexible circuit board80further includes a plurality of external terminals82. The plurality of the external terminals82are all exposed to a lower portion of a front surface of the front cover12of the housing10. The plurality of the external terminals82are connected with docking terminals (not shown) and are capable of being used for transmitting electrical signals or transmitting the power source at the time of charging the physiological signal measurement device100.

The earplug90is of a hollow hemisphere shape. A rear end of the earplug90is wider than a front end of the earplug90. A peripheral surface of the earplug90is gradually indented inward towards a center of the earplug90from the rear end of the earplug90to the front end of the earplug90. The earplug90is mounted outside the in-ear portion121and one end of the fastening portion61of the protective sleeve60adjacent to the in-ear portion121. Specifically, a front of an inner periphery of the earplug90protrudes inward towards the center of the earplug90to form a ring-shaped wedging portion91. The wedging portion91is wedged in the wedging slot62.

Referring toFIG. 1toFIG. 6, when the physiological signal measurement device100is worn, the housing10is worn to an auricle200of a user400, the earplug90abuts against an inner wall of an entrance of an external auditory canal300and the auricle200, so that light of an external environment is shielded to enter the external auditory canal300and a position of wearing the physiological signal measurement device100is limited. The earplug90is also capable of obstructing noises of the external environment to make the physiological signal measurement device100undisturbed by the external environment. When the physiological signal measurement device100is in use, the plurality of the first elastic portions24, the resilient end42of the first flexible circuit board40and the plurality of the spaced second elastic portions63all stretch into the external auditory canal300of the user400, the plurality of the first elastic portions24occur an inward slight deformation by virtue of skin of the external auditory canal300pushing against the plurality of the spaced second elastic portions63to make the plurality of the first elastic portions24and the plurality of the spaced second elastic portions63generate an outward pushing force, so that an outer surface of each of the plurality of the spaced second elastic portions63is neatly adhered to the skin of the external auditory canal300. After the plurality of the first elastic portions24occur the deformation, a distance between the skin of the external auditory canal300, and the plurality of the light emitters44and the plurality of the light sensors45of the first flexible circuit board40is still kept being constant, consequently, various physiological data measured by the physiological signal measurement device100are ensured to be accurate.

A working principle of the physiological signal measurement device100is described as follows. Turn on a switch, the plurality of the light emitters44of the first flexible circuit board40all emit light sources penetrating through the plurality of the spaced second elastic portions63to shine the skin of the external auditory canal300. The light sources are reflected by the skin of the external auditory canal300for a while. The plurality of the light sensors45separately receive the reflected light sources reflected by the skin of the external auditory canal300within a period of time, a group of continuously variable waveforms are drawn and the group of the continuously variable waveforms are transmitted to the microprocessor31. The plurality of the light sensors45are capable of avoiding interferences of external light rays at the time of the plurality of the light sensors45receiving the reflected light sources reflected by the skin of the external auditory canal300. The microprocessor31cooperates an analytical method of the various physiological data measured by the physiological signal measurement device100, physiologic variations of the user400per unit time are recorded and are transmitted to a display device (not shown) by virtue of the external terminals82or the wireless transmission module. The display device is an intelligent cell phone, an intelligent watch or etc. The various physiological data include heart rate data, heart rate variability data, oxyhemoglobin saturation data and other physiological data of a human body.

As described above, when the physiological signal measurement device100is in use, the plurality of the first elastic portions24and the plurality of the spaced second elastic portions63all stretch into the external auditory canal300of the user400by virtue of the plurality of the light emitters44and the plurality of the light sensors45of the first flexible circuit board40of the physiological signal measurement device100are clamped between the plurality of the first elastic portions24and the plurality of the spaced second elastic portions63, the plurality of the first elastic portions24occur the inward slight deformation by virtue of the skin of the external auditory canal300pushing against the plurality of the spaced second elastic portions63to make the plurality of the first elastic portions24and the plurality of the spaced second elastic portions63generate the outward pushing force, so that the outer surface of each of the plurality of the spaced second elastic portions63is neatly adhered to the skin of the external auditory canal300, after the plurality of the first elastic portions24occur the deformation, a distance between the skin of the external auditory canal300, and the plurality of the light emitters44and the plurality of the light sensors45of the first flexible circuit board40is still kept being constant, the various physiological data measured by the physiological signal measurement device100are ensured to be accurate, in addition, the plurality of the light emitters44of the first flexible circuit board40emit the light sources to shine the skin of the external auditory canal300, the plurality of the light sensors45are capable of avoiding the interferences of the external light rays at the time of the plurality of the light sensors45receiving the reflected light sources reflected by the skin of the external auditory canal300, so that the various physiological data measured by the physiological signal measurement device100are further ensured to be accurate.