Detection device and clock

Abstract

To provide a detector capable of achieving high pressure water proof, and a watch having the same.SOLUTION: A detector comprises: a rear lid 5 which has a light reception hole 14a corresponding to a light reception element 13, first and second light emission holes 16a, 20a corresponding to a light emission element 15 and first and second light emission elements 17, 18; a first water proof packing 14c which is arranged between an outer peripheral face of the light reception glass 14b arranged in the light reception hole 14a and an inner peripheral face of the light reception hole 14a, or second and third water proof packing 20c which are arranged between outer peripheral faces of the first and second light emission glasses 16a, 20b arranged on the first and second light emission holes 16a, 20a and inner peripheral faces of the first and second light emission holes 16a, 20b. Therefore, by the first water proof packing 14c or second and third water proof packings 16c, 20c, water proof property is secured and high pressure water proof property is achieved.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This invention relates to a detection device for detecting biological information such as pulse and oxygen saturation, and a watch equipped with the same.

Background Art

[0002] For example, in a portable terminal equipped with a detection device for detecting biological information, as described in Patent Document 1, a structure is known in which a light receiving window portion corresponding to a light receiving element and a light emitting window portion corresponding to a light emitting element are provided in a case body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0004] The light receiving window portion of the detection device in this type of portable terminal has a structure in which a transparent plate is melted in a light receiving hole provided in the case body. Further, the light emitting window portion has a structure in which a transparent plate is melted in a light emitting hole provided in the case body.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In such a detection device of a portable terminal, since the light receiving window portion and the light emitting window portion are provided in the light receiving hole and the light emitting hole provided in the case body by melting a transparent plate or the like, waterproofness cannot be ensured, and there is a problem that high-pressure waterproofing cannot be achieved.

[0006] The problem to be solved by this invention is to provide a detection device capable of achieving high-pressure waterproofing, and a watch equipped with the same.

Means for Solving the Problems

[0007] This invention relates to an apparatus main body provided with a light-receiving hole corresponding to a light-receiving element and a light-emitting hole corresponding to a light-emitting element, and a waterproof member disposed between an outer peripheral surface of a cover disposed in the light-receiving hole or the light-emitting hole and an inner peripheral surface of the light-receiving hole or the light-emitting hole. The cover includes a light-receiving cover disposed in the light-receiving hole and a light-emitting cover disposed in the light-emitting hole. In the device body, there are provided a recess in which the light receiving element and the light emitting element are disposed, a frame-shaped first light shielding portion surrounding the light receiving element, and a frame-shaped second light shielding portion surrounding the light emitting element. The light receiving element is surrounded on four sides by the side surface of the recess and the first light shielding portion, and the light emitting element is surrounded on four sides by the side surface of the recess and the second light shielding portion. It is a detection device characterized by the above.

Effect of the Invention

[0008] According to this invention, high-pressure waterproofing can be achieved.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0010] Hereinafter, with reference to Figs. 1 to 6, an embodiment in which this invention is applied to a wristwatch will be described. As shown in Figs. 1 and 2, this wristwatch includes a wristwatch case 1. Band attachment portions 2 to which watch bands (not shown) are attached are provided on the 12 o'clock side and the 6 o'clock side of the wristwatch case 1, respectively. Switch portions 3 are provided on the 2 o'clock side, 4 o'clock side, 8 o'clock side, 9 o'clock side, and 10 o'clock side of the wristwatch case 1, respectively.

[0011] In addition, as shown in FIG. 1, a watch glass 4 is provided in the upper opening of this wristwatch case 1 via a glass packing (not shown). On the lower side (back surface) of this wristwatch case 1, as shown in FIG. 2, a back cover 5 which is the device main body is attached by a plurality of screws 5a via a waterproof ring (not shown). This back cover 5 is formed of a highly rigid synthetic resin in which glass fiber or carbon fiber is mixed into a polyamide resin, or a highly rigid metal such as stainless steel or a titanium alloy.

[0012] Inside this wristwatch case 1, that is, above the back cover 5, a watch module (not shown) is provided. Although not shown, this watch module includes a watch movement that moves the hands to indicate the time, a display device that is a flat or sheet-like display unit that electro-optically displays information such as time, date, and day of the week, and a circuit unit that drives and controls these watch movement and display device. Various components necessary for the watch function are mounted.

[0013] By the way, as shown in FIGS. 3 to 5, a detection device 6 for detecting biological information such as pulse and oxygen saturation and a charging terminal portion 7 are provided on the back cover 5 of this wristwatch case 1. The detection device 6 measures the pulse and oxygen saturation, and includes a light receiving portion 8, a first light emitting portion 10 which is a light emitting portion, and a second light emitting portion 11 which is a light emitting portion, and is provided in a circular region E in the central portion of the back cover 5. The charging terminal portion 7 has a plurality of charging terminals 7a, and is provided outside the 6 o'clock side in the circular region E in the central portion of the back cover 5.

[0014] As shown in FIGS. 3 to 5, the detection device 6 is configured to detect a pulse with the light receiving unit 8 and the first light emitting unit 10, and to detect an oxygen saturation with the light receiving unit 8 and the second light emitting unit 11. In this case, the light receiving unit 8 is provided at a location corresponding to the 3 o'clock side within the circular region E at the center of the back cover 5. This light receiving unit 8 includes a light receiving element 13 provided corresponding to the 3 o'clock side of a circuit board 12 provided within the circular region E at the center of the inner surface of the back cover 5, and a light receiving window portion 14 provided at a location on the 3 o'clock side within the circular region E at the center of the back cover 5 corresponding to the light receiving element 13.

[0015] As shown in FIGS. 3 to 5, the light receiving window portion 14 includes a circular light receiving hole 14a provided in the back cover 5, a light receiving glass 14b which is a light receiving cover (cover) disposed in the light receiving hole 14a, and a first waterproof member (waterproof member) which is a first waterproof packing 14c fitted between the outer peripheral surface of the light receiving glass 14b and the inner peripheral surface of the light receiving hole 14a. This light receiving window portion 14 is formed with a circular outer size smaller than the outer size of the watch glass 4 and also smaller than the outer size of the circular region E at the center of the back cover 5, for example, a size approximately 1 / 4 of the diameter of the circular region E.

[0016] As a result, as shown in FIGS. 3 to 5, the light receiving window portion 14 is formed with an outer size smaller than the outer size of the circular region E at the center of the back cover 5. In this state, since the first waterproof packing 14c is fitted between the outer peripheral surface of the light receiving glass 14b and the inner peripheral surface of the light receiving hole 14a, waterproofness between the outer peripheral surface of the light receiving glass 14b and the inner peripheral surface of the light receiving hole 14a is ensured, and it is configured to achieve high-pressure waterproofing.

[0017] As shown in FIGS. 3 and 5, the first light emitting unit 10 is provided at two locations corresponding to the 1 o'clock side and the 5 o'clock side within the circular region E at the center of the back cover 5. These first light emitting units 10 include two light emitting elements 15 respectively provided at two locations on the 1 o'clock side and the 5 o'clock side of a circuit board 12 provided on the inner surface of the back cover 5, and two first light emitting window portions 16 provided at two locations corresponding to the 1 o'clock side and the 5 o'clock side within the circular region E at the center of the back cover 5 corresponding to the two light emitting elements 15.

[0018] In this case, each of the two light-emitting elements 15 provided at two positions on the 1 o'clock side and the 5 o'clock side of the circuit board 12 emits light with a green wavelength (G) and is arranged at an equal distance from the light-receiving element 13 of the light-receiving unit 8. The first light-emitting window portion 16 includes two circular first light-emitting holes 16a that are light-emitting holes provided at two positions on the 1 o'clock side and the 5 o'clock side within the circular region E at the center of the back cover 5, and two first light-emitting glasses 16b that are light-emitting covers (covers) arranged in each of these two first light-emitting holes 16a.

[0019] Further, as shown in FIGS. 3 and 5, these first light-emitting window portions 16 further include second waterproof packings 16c that are second waterproof members (waterproof members) respectively fitted between the outer peripheral surfaces of the two first light-emitting glasses 16b and the inner peripheral surfaces of the two first light-emitting holes 16a. These first light-emitting window portions 16 are formed such that the size of the outer periphery of the circle is smaller than the size of the outer periphery of the circular region E at the center of the back cover 5 and is the same as the size of the outer periphery of the light-receiving window portion 14.

[0020] As a result, as shown in FIGS. 3 and 5, each of the first light-emitting window portions 16 is formed such that the size of the outer periphery of the circle is smaller than the size of the outer periphery of the circular region E at the center of the back cover 5 and is the same as the size of the outer periphery of the light-receiving window portion 14. In this state, since the second waterproof packing 16c is fitted between the outer peripheral surface of the first light-emitting glass 16b and the inner peripheral surface of the first light-emitting hole 16a, waterproofness between the outer peripheral surface of the first light-emitting glass 16b and the inner peripheral surface of the first light-emitting hole 16a is ensured, and high-pressure waterproofing is achieved.

[0021] In this case, as shown in FIGS. 3 and 5, this detection device 6 includes a light receiving unit 8 and two first light emitting units 10. Thus, the light of the green wavelength (G) emitted by each light emitting element 15 of the two first light emitting units 10 passes through the first light emitting glass 16b of the two first light emitting window portions 16 and irradiates two locations on the skin of the arm. When the reflected light of the light irradiated on these two locations on the skin passes through the light receiving glass 14b of the light receiving window portion 14 and is received by the light receiving element 13, it is configured to detect the pulse according to the change in the amount of received light.

[0022] On the other hand, as shown in FIGS. 4 and 5, the second light emitting unit 11 is provided at a location corresponding to the 9 o'clock side within the circular region E in the central portion of the back cover 5. This second light emitting unit 11 includes first and second light emitting elements 17 and 18 which are light emitting elements respectively provided at the 9 o'clock side location of the circuit board 12 provided on the inner surface of the back cover 5, and a second light emitting window portion 20 provided at the 9 o'clock side location within the circular region E in the central portion of the back cover 5 corresponding to the first and second light emitting elements 17 and 18.

[0023] In this case, among the first and second light emitting elements 17 and 18, the first light emitting element 17 emits light of a red wavelength (R) that is easily absorbed by oxyhemoglobin (HbO 2 ). The second light emitting element 18 emits light of an infrared wavelength (IR) that is easily absorbed by reduced hemoglobin (Hb). As shown in FIGS. 4 and 5, these first and second light emitting elements 17 and 18 are arranged side by side at an equal distance from the light receiving element 13 of the light receiving unit 8 on the 9 o'clock side of the circuit board 12.

[0024] As shown in FIGS. 4 and 5, the second light-emitting window portion 20 includes a circular second light-emitting hole 20a that is a light-emitting hole provided at a position on the 9 o'clock side within a circular region E at the center of the back cover 5, a second light-emitting glass 20b that is a light-emitting cover (cover) disposed in the second light-emitting hole 20a, and a third waterproof packing 20c that is a second waterproof member fitted between the outer peripheral surface of the second light-emitting glass 20b and the inner peripheral surface of the second light-emitting hole 20a. The second light-emitting window portion 20 is formed in a size such that the size of its circular outer periphery is smaller than the size of the outer periphery of the circular region E at the center of the back cover 5 and larger than the size of the outer periphery of the light-receiving window portion 14, for example, about half (1 / 2) of the diameter of the circular region E.

[0025] Accordingly, as shown in FIGS. 4 and 5, the second light-emitting window portion 20 is formed in a size such that the size of its circular outer periphery is smaller than the size of the outer periphery of the circular region E at the center of the back cover 5 and larger than that of the light-receiving window portion 14. In this state, since the third waterproof packing 20c is fitted between the outer peripheral surface of the second light-emitting glass 20b and the inner peripheral surface of the second light-emitting hole 20a, waterproofness between the outer peripheral surface of the second light-emitting glass 20b and the inner peripheral surface of the second light-emitting hole 20a is ensured, and it is configured to achieve high-pressure waterproofing.

[0026] In this case, as shown in FIGS. 4 and 5, the second light-emitting window portion 20 is formed with a larger surface area in a direction extending toward the 9 o'clock side, which is the side opposite to the light-receiving element 13 of the light-receiving portion 8, with respect to the first and second light-emitting elements 17 and 18. That is, the second light-emitting window portion 20 is disposed in a biased state such that the second light-emitting glass 20b extends and protrudes to the side opposite to the light-receiving element 13 of the light-receiving portion 8 with respect to the first and second light-emitting elements 17 and 18.

[0027] As a result, as shown in FIGS. 4 and 5, the second light-emitting window portion 20 is configured to be used as an inspection window for inspecting the waterproofness of the wristwatch case 1, that is, an inspection window for inspecting the fogging state of the second light-emitting window portion 20. That is, the waterproofness of the wristwatch case 1 is usually inspected by the watch glass 4 provided at the upper opening of the wristwatch case 1. However, if a sheet-like display device or the like is provided on the inner surface of the watch glass 4, the waterproofness cannot be inspected by the watch glass 4. For this reason, the waterproofness is inspected using the second light-emitting window portion 20 having a relatively large outer diameter.

[0028] Further, as shown in FIGS. 4 and 5, this detection device 6 includes a light-receiving portion 8 and a second light-emitting portion 11. Thus, light of a red wavelength (R) and an infrared wavelength (IR) emitted by the first and second light-emitting elements 17 and 18 of the second light-emitting portion 11 is transmitted through the second light-emitting glass 20b of the second light-emitting window portion 20 and irradiates the skin of the arm. When the reflected light of the irradiated light is received by the light-receiving element 13 through the light-receiving glass 14b of the light-receiving window portion 14, the oxygen saturation is calculated from the ratio of the received light amounts of the red wavelength (R) and the infrared wavelength (IR).

[0029] By the way, as shown in FIGS. 5 and 6, a detection recess 5b is provided in a circular region E at the center of the inner surface of the back cover 5 corresponding to the detection device 6. The light-receiving portion 8, two first light-emitting portions 10, and the second light-emitting portion 11 are provided in the detection recess 5b. Further, in the detection recess 5b on the inner surface of the back cover 5, a frame-shaped first light-shielding portion 21 surrounding the light-receiving element 13 of the light-receiving portion 8 and a frame-shaped second light-shielding portion 22 surrounding the first and second light-emitting elements 17 and 18 of the second light-emitting portion 11 are provided.

[0030] As shown in FIG. 6, the first light-shielding portion 21 is formed in a substantially rectangular frame shape that largely surrounds the light-receiving hole 14a of the light-receiving window portion 14 away from its inner periphery. Thereby, the light-receiving element 13 of the light-receiving portion 8 is configured to receive only the light incident on the inside of the frame shape of the first light-shielding portion 21 through the light-receiving window portion 14, and the other light is shielded by the first light-shielding portion 21.

[0031] As shown in Fig. 6, the second light-shielding portion 22 is formed in a substantially semi-circular frame shape that surrounds the second light-emitting hole 20a of the second light-emitting window portion 20 near its inner circumference. Thereby, the first and second light-emitting elements 17 and 18 of the second light-emitting portion 11 are configured such that the emitted light is radiated to the outside of the back cover 5 only through the second light-emitting window portion 20, and the emitted light is shielded by the second light-shielding portion 22 and not directly irradiated to the light-receiving portion 8.

[0032] Also, as shown in Fig. 3, the light-receiving element 13 of the light-receiving portion 8 is surrounded by a light-shielding member 23 except for the light-receiving region. This light-shielding member 23 is formed in a substantially rectangular frame shape by a synthetic resin. This light-shielding member 23 is disposed within the region surrounded by the first light-shielding portion 21 and is configured to surround the light-receiving element 13 except for the portion corresponding to the light-receiving region of the light-receiving element 13, that is, the light-receiving window portion 14. Thereby, the light-receiving element 13 is configured to receive only the light transmitted through the light-receiving window portion 14, and other light is shielded.

[0033] On the other hand, as shown in Figs. 2 to 5, this detection device 6 includes a cover member 24 that covers the outer surface of the back cover 5 except for the portions corresponding to the light-receiving glass 14b, the two first light-emitting glasses 16b, and the second light-emitting glass 20b. This cover member 24 is entirely formed in a substantially circular shape by a synthetic resin having hygroscopicity such as polyamide. The cover member 24 is provided with a first cover hole 25 corresponding to the light-receiving glass 14b, two second cover holes 26 that are second cover holes corresponding to the two first light-emitting glasses 16b, and a third cover hole 27 that is a second cover hole corresponding to the second light-emitting glass 20b.

[0034] In this case, as shown in Figs. 3 and 4, a first pressing portion 28 is provided on the inner peripheral portion of the first cover hole 25 to cover and press the outer peripheral edge portion that is the non-effective region outside the effective region of the light-receiving glass 14b. This first pressing portion 28 is configured to prevent the light-receiving glass 14b from dropping out of the light-receiving hole 14a toward the outside of the back cover 5 by pressing the chamfered portion provided on the outer peripheral edge portion of the light-receiving glass 14b.

[0035] Also, as shown in Fig. 3, on the inner peripheral part of each of the two second cover holes 26, there are provided two second pressing parts 29 which are second pressing parts for covering and pressing each edge of the outer periphery which is the non-effective area outside the effective area of the two first light-emitting glasses 16b. Each of these two pressing parts 29 is configured to prevent the first light-emitting glass 16b from falling out of the first light-emitting hole 16a toward the outside of the back cover 5 by pressing the chamfered part provided at the edge of the outer periphery of the first light-emitting glass 16b.

[0036] Furthermore, as shown in Fig. 4, on the inner peripheral part of the third cover hole 27, there is provided a third pressing part 30 which is a second pressing part for covering and pressing the edge of the outer periphery which is the non-effective area outside the effective area of the second light-emitting glass 20b. This third pressing part 30 is configured to prevent the second light-emitting glass 20b from falling out of the second light-emitting hole 20a toward the outside of the back cover 5 by pressing the chamfered part provided at the edge of the outer periphery of the second light-emitting glass 20b.

[0037] Also, as shown in Figs. 3 and 4, on the outer peripheral part of this cover member 24, there is provided a mounting convex part 32 which is fitted into a mounting concave part 31 provided annularly on the outer peripheral part of the outer surface in the circular region E at the center of the back cover 5. Also, on the inner surface of this cover member 24, a double-sided adhesive tape 33 is provided. Thereby, the cover member 24 is configured to be arranged on the outer surface of the circular region E at the center of the back cover 5 and to be adhered to the outer surface at the center of the back cover 5 by the double-sided adhesive tape 33 when the mounting convex part 32 on the outer peripheral part is fitted into the mounting concave part 31 provided annularly on the outer surface of the back cover 5.

[0038] Next, the case of using this wristwatch will be described. This wristwatch is usually used by attaching the wristwatch case 1 to the wrist. At this time, the time, day of the week, date, etc. can be visually recognized through the watch glass 4 by a watch module (not shown) inside the wristwatch case 1. In this state, when detecting the pulse and oxygen saturation, first, the wristwatch is set to the detection mode by selecting a plurality of switch parts 3 and performing a switch operation.

[0039] In this state, when the detection device 6 starts detection, each light-emitting element 15 of the two first light-emitting units 10 of the detection device 6 emits light of a green wavelength (G), and the emitted light of the green wavelength (G) passes through each first light-emitting glass 16b of the two first light-emitting window portions 16 and is irradiated onto two locations on the skin of the arm. The reflected light of the light irradiated onto these two locations on the skin passes through the light-receiving glass 14b of the light-receiving window portion 14 and is received by the light-receiving element 13 of the light-receiving unit 8. Thereby, the detection device 6 calculates the pulse based on the change in the amount of light received by the light-receiving element 13.

[0040] In this case, when each light-emitting element 15 of the two first light-emitting units 10 emits light of a green wavelength (G) respectively, the emitted light is blocked by the first light-shielding portion 21 and the light-shielding member 23 of the light-receiving unit 8. Therefore, the light of the green wavelength (G) emitted by each light-emitting element 15 is not directly irradiated onto the light-receiving element 13 of the light-receiving unit 8. For this reason, the light-receiving element 13 receives only the light reflected by the skin of the arm and transmitted through the light-receiving window portion 14 of the light-receiving unit 8, so that the pulse detection performance of the detection device 6 is enhanced.

[0041] Also, at this time, the first light-emitting element 17 of the second light-emitting unit 11 of the detection device 6 emits light of a red wavelength (R), and the second light-emitting element 18 emits light of an infrared wavelength (IR). The emitted lights of the red wavelength (R) and the infrared wavelength (IR) pass through the second light-emitting glass 20b of the second light-emitting window portion 20 and are irradiated onto the skin of the arm. The reflected light of each irradiated light passes through the light-receiving glass 14b of the light-receiving window portion 14 and is received by the light-receiving element 13 of the light-receiving unit 8 respectively. Thereby, the detection device 6 calculates the oxygen saturation from the ratio of the amounts of light received by the light-receiving element 13 for the reflected lights of the red wavelength (R) and the infrared wavelength (IR).

[0042] Also in this case, when the first and second light emitting elements 17 and 18 of the second light emitting unit 11 emit light of red wavelength (R) and infrared wavelength (IR), they are blocked by the second light shielding unit 22 of the second light emitting unit 11 and also blocked by the first light shielding unit 21 and the light shielding member 23 of the light receiving unit 8. Therefore, the light of red wavelength (R) and infrared wavelength (IR) emitted by the first and second light emitting elements 17 and 18 is not directly irradiated onto the light receiving element 13 of the light receiving unit 8. As a result, only the light reflected by the skin of the arm and transmitted through the light receiving window portion 14 of the light receiving unit 8 is received by the light receiving element 13, so that the detection performance of the oxygen saturation by the detection device 6 is enhanced.

[0043] Next, the waterproof inspection of such a wristwatch will be described. This waterproof inspection is usually a method of inspecting the fogging state of the inner surface of the watch glass 4 after submerging the watch case 1 in water. If it fogs, it can be seen that water has entered. However, when the fogging state cannot be inspected with the watch glass 4, for example, when a sheet-like display device or the like is directly provided on the inner surface of the watch glass 4, the waterproof inspection is performed by the second light emitting glass 20b of the detection device 6.

[0044] In this case, the outer circumference of the second light emitting glass 20b of the second light emitting window portion 20 is larger than the outer circumferences of the light receiving glass 14b of the light receiving window portion 14 and the first light emitting glass 16b of the first light emitting window portion 16. Therefore, the waterproof inspection can be performed by this second light emitting glass 20b. That is, the surface area of this second light emitting window portion 20 is formed to be large so as to protrude in a direction extending toward the 9 o'clock side, which is the side opposite to the light receiving element 13 of the light receiving unit 8 with respect to the first and second light emitting elements 17 and 18.

[0045] Therefore, in this second light emitting window portion 20, the second light emitting glass 20b is arranged in a state of extending and being offset to the side opposite to the light receiving element 13 of the light receiving unit 8 with respect to the first and second light emitting elements 17 and 18. As a result, since the outer diameter of the second light emitting window portion 20 is formed to be large, it can be used as an inspection window for inspecting the waterproofness of the watch case 1, that is, an inspection window for inspecting the fogging state of the second light emitting window portion 20.

[0046] Thus, according to the detection device 6 of this wristwatch, the back cover 5 which is the device main body provided with the light-receiving hole 14a corresponding to the light-receiving element 13 and the first and second light-emitting holes 16a, 20a corresponding to the light-emitting elements 15, 17, 18, and the first waterproof packing 14c which is a waterproof member disposed between the outer peripheral surface of the light-receiving glass 14b or the first and second light-emitting glasses 16b, 20b which are covers disposed in the light-receiving hole 14a or the first and second light-emitting holes 16a, 20a and the inner peripheral surface of the light-receiving hole 14a or the first and second light-emitting holes 16a, 20a, or the second and third waterproof packings 16c, 20c, are provided, so that high-pressure waterproofing can be achieved.

[0047] That is, in the detection device 6 of this wristwatch, the first waterproof packing 14c disposed between the outer peripheral surface of the light-receiving glass 14b and the inner peripheral surface of the light-receiving hole 14a, or the second and third waterproof packings 16c, 20c disposed between the outer peripheral surfaces of the first and second light-emitting glasses 16b, 20b and the inner peripheral surfaces of the first and second light-emitting holes 16a, 20a can ensure the waterproof property between the inner peripheral surface of the light-receiving hole 14a and the outer peripheral surface of the light-receiving glass 14b, or between the inner peripheral surfaces of the first and second light-emitting holes 16a, 20a and the outer peripheral surfaces of the first and second light-emitting glasses 16b, 20b, thereby achieving high-pressure waterproofing.

[0048] In this case, in the detection device 6 of this wristwatch, the cover includes the light-receiving glass 14b which is a light-receiving cover disposed in the light-receiving hole 14a and the first and second light-emitting glasses 16b, 20b which are light-emitting covers disposed in the first and second light-emitting holes 16a, 20a which are light-emitting holes, and the waterproof member includes the first waterproof packing 14c which is a first waterproof member disposed between the outer peripheral surface of the light-receiving glass 14b and the inner peripheral surface of the light-receiving hole 14a, and the second and third waterproof packings 16c, 20c which are second waterproof members disposed between the outer peripheral surfaces of the first and second light-emitting glasses 16b, 20b which are light-emitting covers and the inner peripheral surfaces of the first and second light-emitting holes 16a, 20a, so that high-pressure waterproofing can be surely achieved.

[0049] That is, in the detection device 6 of this wristwatch, a light-receiving hole 14a corresponding to the light-receiving element 13, a light-receiving glass 14b disposed in the light-receiving hole 14a, and a first waterproof packing 14c fitted and disposed between the inner peripheral surface of the light-receiving hole 14a and the outer peripheral surface of the light-receiving glass 14b are provided. Therefore, the first waterproof packing 14c can ensure the waterproof property between the inner peripheral surface of the light-receiving hole 14a and the outer peripheral surface of the light-receiving glass 14b.

[0050] Also, in the detection device 6 of this wristwatch, a first light-emitting hole 16a corresponding to the light-emitting element 15 of the first light-emitting unit 10, a first light-emitting glass 16b disposed in the first light-emitting hole 16a, and a second waterproof packing 16c fitted and disposed between the outer peripheral surface of the first light-emitting glass 16b and the inner peripheral surface of the first light-emitting hole 16a are provided. Therefore, the second waterproof packing 16c can ensure the waterproof property between the outer peripheral surface of the first light-emitting glass 16b and the inner peripheral surface of the first light-emitting hole 16a.

[0051] Furthermore, in the detection device 6 of this wristwatch, a second light-emitting hole 20a corresponding to the first and second light-emitting elements 17, 18 which are the light-emitting elements of the second light-emitting unit 11, a second light-emitting glass 20b disposed in the second light-emitting hole 20a, and a third waterproof packing 20c fitted and disposed between the outer peripheral surface of the second light-emitting glass 20b and the inner peripheral surface of the second light-emitting hole 20a are provided. Therefore, the third waterproof packing 20c can ensure the waterproof property between the outer peripheral surface of the second light-emitting glass 20b and the inner peripheral surface of the second light-emitting hole 20a.

[0052] Thereby, in the detection device 6 of this wristwatch, the first waterproof packing 14c can ensure the waterproof property between the inner peripheral surface of the light-receiving hole 14a and the outer peripheral surface of the light-receiving glass 14b, the second waterproof packing 16c can ensure the waterproof property between the outer peripheral surface of the first light-emitting glass 16b and the inner peripheral surface of the first light-emitting hole 16a, and the third waterproof packing 20c can ensure the waterproof property between the outer peripheral surface of the second light-emitting glass 20b and the inner peripheral surface of the second light-emitting hole 20a. Therefore, high-pressure waterproofing of the entire detection device 6 can be achieved.

[0053] In this case, in the detection device 6 of this wristwatch, since the outer circumferences of the light-receiving glass 14b, the first light-emitting glass 16b, and the second light-emitting glass 20b are each formed to be smaller than the outer circumference of the watch glass 4, waterproofness can also be ensured thereby, and high-pressure waterproofing of the entire detection device 6 can be achieved.

[0054] Further, in the detection device 6 of this wristwatch, a frame-shaped first light-shielding portion 21 that surrounds the light-receiving element 13 on the back cover 5 which is the device main body, and a frame-shaped second light-shielding portion 22 that surrounds the first and second light-emitting elements 17 and 18 of the second light-emitting portion 11 are provided. By this, the detection performance can be improved by the first light-shielding portion 21 and the second light-shielding portion 22.

[0055] That is, since the first light-shielding portion 21 surrounds the light-receiving element 13 of the light-receiving portion 8, it is possible to surely shield the light emitted by the light-emitting element 15 of the first light-emitting portion 10 and the first and second light-emitting elements 17 and 18 of the second light-emitting portion 11 from being directly received by the light-receiving element 13 of the light-receiving portion 8, and at the same time, only the light incident through the light-receiving window portion 14 can be received by the light-receiving element 13 of the light-receiving portion 8, so the detection performance can be enhanced.

[0056] Also, since the second light-shielding portion 22 surrounds the first and second light-emitting elements 17 and 18 of the second light-emitting portion 11, it is possible to surely shield the light emitted by the first and second light-emitting elements 17 and 18 from being directly received by the light-receiving element 13 of the light-receiving portion 8, and at the same time, the light emitted by the first and second light-emitting elements 17 and 18 of the second light-emitting portion 11 can be radiated to the outside of the back cover 5 only through the second light-emitting window portion 20, so the detection performance can also be enhanced thereby.

[0057] Further, in the detection device 6 of this wristwatch, since the light-receiving element 13 is surrounded by a light-shielding member 23 except for the light-receiving region, only the light transmitted through the light-receiving window portion 14 corresponding to the light-receiving region can be received, and unnecessary light other than this can be surely shielded by the light-shielding member 23, so the detection performance can also be enhanced thereby.

[0058] In addition, in the detection device 6 of this wristwatch, a light-receiving glass 14b disposed in the light-receiving hole 14a and first and second glasses 16b and 20b disposed in the first and second light-emitting holes 16a and 20a are provided. The light-receiving glass 14b and the first and second light-emitting glasses 16b and 20b have an effective region and a non-effective region, and a cover member 24 covering the back cover 5 including the non-effective regions of the light-receiving glass 14b and the first and second light-emitting glasses 16b and 20b is provided. When the back cover 5 is placed on the skin of the arm, the cover member 24 can be pressed against the skin of the arm to reliably block the light-receiving glass 14b, the first light-emitting glass 16b, and the second light-emitting glass 20b by the skin. Thereby, unnecessary light from the outside of the arm can be prevented from being received by the light-receiving element 13 through the light-receiving glass 14b.

[0059] In this case, in the detection device 6 of this wristwatch, the cover member 24 is provided with a first cover hole 25 corresponding to the light-receiving glass 14b, a second cover hole 26 corresponding to the first light-emitting glass 16b, and a third cover hole 27 corresponding to the second light-emitting glass 20b. Thus, the light emitted by the light-emitting element 15 of the first light-emitting unit 10 and the first and second light-emitting elements 17 and 18 of the second light-emitting unit 11 can be favorably irradiated onto the skin of the arm, and the reflected light of the light irradiated onto the skin can be reliably and favorably received by the light-receiving element 13 of the light-receiving unit 8.

[0060] In addition, in the detection device 6 of this wristwatch, a first pressing portion 28 that covers and presses the outer peripheral portion of the light-receiving glass 14b is provided on the inner peripheral portion of the first cover hole 25, a second pressing portion 29 that covers and presses the outer peripheral portion of the first light-emitting glass 16b is provided on the inner peripheral portion of the second cover hole 26, and a third pressing portion 30 that covers and presses the outer peripheral portion of the second light-emitting glass 20b is provided on the inner peripheral portion of the third cover hole 27. Thus, the first to third pressing portions 28 to 30 can prevent the light-receiving glass 14b, the first light-emitting glass 16b, and the second light-emitting glass 20b from falling off.

[0061] That is, in the detection device 6 of this wristwatch, since the chamfered portion provided at the outer peripheral edge of the light-receiving glass 14b is pressed by the first pressing portion 28, it is possible to prevent the light-receiving glass 14b from falling outside the back cover 5. Since the chamfered portion provided at the outer peripheral edge of the first light-emitting glass 16b is pressed by the second pressing portion 29, it is possible to prevent the first light-emitting glass 16b from falling outside the back cover 5. Since the chamfered portion provided at the outer peripheral edge of the second light-emitting glass 20b is pressed by the third pressing portion 30, it is possible to prevent the second light-emitting glass 20b from falling outside the back cover 5.

[0062] Also, in the detection device 6 of this wristwatch, since the light-emitting elements 15 of the first light-emitting unit 10 are provided at two locations on the back cover 5 at an equal distance from the light-receiving element 13 of the light-receiving unit 8, the light emitted by the two light-emitting elements 15 provided at the two locations on the back cover 5 can be evenly irradiated onto the skin at two locations on the arm at an equal distance from the light-receiving element 13. Therefore, the reflected light from the skin at the two locations on the arm can be evenly received, and thereby the detection performance can be improved.

[0063] In this case, in the detection device 6 of this wristwatch, since the light-emitting element 15 of the first light-emitting unit 10 emits light of a green wavelength (G), the light of the green wavelength (G) emitted by the light-emitting element 15 can be irradiated onto the skin of the arm. By receiving the reflected light of the light of the green wavelength (G) irradiated onto the skin of this arm, the pulse can be accurately and favorably detected according to the change in the received light amount.

[0064] Also, in the detection device 6 of this wristwatch, since the first light-emitting element 17 of the second light-emitting unit 11 emits light of a red wavelength (R) and the second light-emitting element 18 emits light of an infrared wavelength (IR), the oxygen saturation can be accurately and reliably detected. That is, in this detection device 6, the red wavelength (R) emitted by the first light-emitting element 17 is easily absorbed by oxyhemoglobin, and the infrared wavelength (IR) emitted by the second light-emitting element 18 is easily absorbed by reduced hemoglobin. Therefore, the oxygen saturation can be accurately and favorably detected from the ratio of the received light amounts of the reflected lights of these red wavelength (R) and infrared wavelength (IR).

[0065] Furthermore, in this wristwatch, since the detection device 6 is provided on the back cover 5 attached to the back surface of the watch case 1, when the watch case 1 is attached to the wrist, the detection device 6 provided on the back cover 5 can be disposed on the wrist. As a result, biological information such as a pulse and an oxygen saturation can be detected by the detection device 6, so that it is possible to provide a product that is easy to handle and has good usability.

[0066] In addition, in the above-described embodiment, the case where the detection device 6 includes the first light emitting unit 10 and the second light emitting unit 11 has been described. However, in the present invention, the detection device 6 does not necessarily need to include both the first light emitting unit 10 and the second light emitting unit 11. For example, a structure including only one of the first light emitting unit 10 and the second light emitting unit 11 may be used.

[0067] Also, in the above-described embodiment, the case where the second light emitting window portion 20 of the second light emitting unit 11 is formed larger than the size of the light receiving window portion 14 and used as a window portion for waterproof inspection has been described. However, the present invention is not limited to this, and the light receiving window portion 14 of the light receiving unit 8 and the first light emitting window portion 16 of the first light emitting unit 10 may be formed to have the same size as the second light emitting window portion 20 and used as a window portion for waterproof inspection. Also in this case, the first light emitting window portion 16 may be formed large so as to extend toward the side opposite to the light receiving element 13 of the light receiving unit 8 with respect to the light emitting element 15.

[0068] Also, in the above-described embodiment, the case where the light receiving unit 8 and the second light emitting unit 11 are provided in the 3 o'clock to 9 o'clock direction has been described. However, the present invention is not limited to this, and they may be provided in the 12 o'clock to 6 o'clock direction. Further, the present invention is not limited to this, and they may be provided in any direction as long as they are provided on a diagonal line.

[0069] Furthermore, in the above-described embodiment, the case where the present invention is applied to a wristwatch has been described. However, the present invention does not necessarily need to be a wristwatch, and can be applied to various timepieces such as a travel watch, an alarm clock, a table clock, and a wall clock. Also, the present invention does not necessarily need to be a timepiece, and can be applied to electronic devices such as a portable terminal.

[0070] Although one embodiment of the present invention has been described above, the present invention is not limited thereto, and includes the invention described in the claims and the equivalent scope thereof. The invention described in the claims of the present application is appended below.

[0071] (Appended Note) The invention according to claim 1 is a detection device comprising: a device body provided with a light receiving hole corresponding to a light receiving element and a light emitting hole corresponding to a light emitting element; and a waterproof member disposed between an outer peripheral surface of a cover disposed in the light receiving hole or the light emitting hole and an inner peripheral surface of the light receiving hole or the light emitting hole.

[0072] The invention according to claim 2 is the detection device according to claim 1, wherein the cover includes a light receiving cover disposed in the light receiving hole and a light emitting cover disposed in the light emitting hole, and the waterproof member includes a first waterproof member disposed between an outer peripheral surface of the light receiving cover and an inner peripheral surface of the light receiving hole, and a second waterproof member disposed between an outer peripheral surface of the light emitting cover and an inner peripheral surface of the light emitting hole.

[0073] The invention according to claim 3 is the detection device according to claim 1 or claim 2, wherein the device body is provided with a frame-shaped first light shielding portion surrounding the light receiving element and a frame-shaped second light shielding portion surrounding the light emitting element.

[0074] The invention according to claim 4 is the detection device according to any one of claims 1 to 3, wherein the light receiving element is surrounded by a light shielding member except for a light receiving region.

[0075] The invention according to claim 5 is a detection device according to any one of claims 1 to 4, wherein the cover includes a light-receiving cover disposed at the light-receiving hole and a light-emitting cover disposed at the light-emitting hole, the light-receiving cover and the light-emitting cover have an effective region and a non-effective region, and the device body includes a cover member covering the non-effective regions of the light-receiving cover and the light-emitting cover.

[0076] The invention according to claim 6 is a detection device according to claim 5, wherein the cover member is provided with a first cover hole corresponding to the light-receiving cover and a second cover hole corresponding to the light-emitting cover.

[0077] The invention according to claim 7 is a detection device according to claim 6, wherein a first pressing portion for covering and pressing the outer peripheral portion of the light-receiving cover is provided on the inner peripheral portion of the first cover hole, and a second pressing portion for covering and pressing the outer peripheral portion of the light-emitting cover is provided on the inner peripheral portion of the second cover hole.

[0078] The invention according to claim 8 is a detection device according to any one of claims 1 to 7, wherein the light-emitting element is provided at two positions of the device body at an equal distance from the light-receiving element.

[0079] The invention according to claim 9 is a detection device according to any one of claims 1 to 8, wherein the light-emitting element emits light having a green wavelength.

[0080] The invention according to claim 10 is a detection device according to any one of claims 1 to 9, wherein the light-emitting element includes a first light-emitting element that emits light having a red wavelength and a second light-emitting element that emits light having an infrared wavelength.

[0081] The invention according to claim 11 is a timepiece characterized by including the detection device according to any one of claims 1 to 10.

[0082] The invention according to claim 12 is a timepiece, characterized in that, in the timepiece according to claim 11, the detection device is provided on a back cover attached to the back surface of the timepiece case.

Explanation of Signs

[0083] 1 Wristwatch case 2 Band attachment part 3 Switch part 4 Watch glass 5 Back cover 5a Screw 5b Detection recess 6 Detection device 7 Charging terminal part 7a Charging terminal 8 Light receiving part 10 First light emitting part 11 Second light emitting part 12 Circuit board 13 Light receiving element 14 Light receiving window part 14a Light receiving hole 14b Light receiving glass 14c First waterproof packing 15 Light emitting element 16 First light emitting window part 16a First light emitting hole 16b First light emitting glass 16c Second waterproof packing 17, 18 First and second light emitting elements 20 Second light emitting window part 20a Second light emitting hole 20b Second light emitting glass 20c Third waterproof packing 21 First light shielding part 22 Second light shielding part 23 Light shielding member 24 Cover member 25 First cover hole 26 Second cover hole 27 Third cover hole 28 First pressing part 29 Second pressing part 30 Third pressing part 31 Mounting recess 32 Mounting projection 33 Double-sided adhesive tape

Claims

1. a device body provided with a light receiving hole corresponding to a light receiving element and a light emitting hole corresponding to a light emitting element; a waterproof member disposed between an outer peripheral surface of a cover disposed in the light receiving hole or the light emitting hole and an inner peripheral surface of the light receiving hole or the light emitting hole, The cover includes a light receiving cover disposed in the light receiving hole and a light emitting cover disposed in the light emitting hole, the device body is provided with a recess in which the light receiving element and the light emitting element are disposed, a frame-shaped first light shielding portion surrounding the light receiving element, and a frame-shaped second light shielding portion surrounding the light emitting element; the light receiving element is surrounded on all four sides by the side surfaces of the recess and the first light shielding portion, The light emitting element is surrounded on all four sides by the side surfaces of the recess and the second light shielding portion. A detection device comprising:

2. In the detection device according to claim 1, the light receiving element and the light emitting element are disposed on a plate member, the plate member is in contact with the first light-shielding portion, the light receiving element is located in a first space surrounded by the plate member and the first light shielding portion, The light emitting element is located in a second space surrounded by the plate member and the second light blocking portion. A detection device comprising:

3. In the detection device according to claim 1 or claim 2, The first light-shielding portion and a side surface of the recess are connected to each other. A detection device comprising:

4. In the detection device according to claim 1 or claim 2, The second light-shielding portion and a side surface of the recess are connected to each other. A detection device comprising:

5. In the detection device according to any one of claims 1 to 4, The light receiving element is surrounded by a light shielding member except for the light receiving area. A detection device comprising:

6. In the detection device according to any one of claims 1 to 5, The light emitting element is provided at two locations on the device body at equal distances from the light receiving element. A detection device comprising:

7. A detection device according to any one of claims 1 to 6, clock.

8. 8. The timepiece according to claim 7, The detection device is provided on a back cover attached to the back of the watch case. A watch characterized by

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