JPH0457792U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a central vertical sectional view showing a portable star clock and time measuring device according to an embodiment of the present invention in a sundial usage state, and Fig. 2 is a view of Fig. 1 seen from above in a sundial usage state. The plan view of FIG. 3 is an explanatory view of the operation when measuring the time at night using the star clock. A...Star clock, B...Sundial, 14...Ring hinge portion, 15...Case body, 16...Compass direction meter, 16a...Compass needle, 16b...Sharp support shaft, 1
6c...Direction plate, 17...Transparent plate part, 18...Scale plate part, 19...Night time scale, 20...Time plate, 21...Constellation ring, 22...Month and day scale for one year , 23a, 23b...Specific constellation display, 2
4...Lid hinge part, 25...Transparent constellation month date plate,
25a... Center of constellation month date plate, 26... Rotating pointer, 30... Lid body, 31... Daytime time scale,
32... Hinge side bracket part, 33... Sundial pointer.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A portable star clock that measures the approximate time of the night based on the positional relationship between the North Star and a characteristic constellation, which comprises a case body having a ring hinge portion; It has a direction meter built into the case body, a transparent plate part through which the pointer rotation area of the direction meter can be seen, and an opaque scale plate part that covers the outer area of the transparent plate part. A time scale for the night time zone is placed in the north semicircular area so that 6:00 p.m. corresponds to the east display of the compass, midnight corresponds to the north display of the compass, and 6:00 a.m. corresponds to the west display of the compass, respectively. a time plate fitted into the opening of the case body shown in FIG. The constellation has a month/day scale for one year that is displayed for the time being, a center that is aligned with the North Star of the celestial body, and a specific constellation that is displayed at a predetermined position away from the center toward the month/day scale. A transparent constellation month and date plate held in a ring so that it can be rotated by hand, and a moon that is pivoted in the center of the constellation month and date plate so that it can be rotated by hand and can be stopped at any position. A portable star clock equipped with a rotating pointer that can be used to set the date. (2) The case body is provided with a lid hinge portion located on the opposite side of the ring hinge portion, and a sundial that can approximately measure daytime time depending on the position of the shadow line of sunlight can be opened and closed on this lid hinge portion. 2. A portable time measuring device including a star clock according to claim 1, wherein the portable time measuring device is pivotally connected to a star clock. (3) The sundial has a daytime time scale displayed on the inner bottom surface of the opening lid, and is pivoted to the lid hinge portion of the case body, and when the sundial is used, the lid is opened approximately horizontally to the case body. A lid body that can be opened and closed is closed and latched to cover the constellation ring in the closed state when carried, and a lid that is pivotably supported on a hinge side bracket in the lid body so that it can be raised and rotated when the lid body is closed. The sundial pointer is stored in the body and is erected at a position on the north-south display extension line of the compass when the lid is open, and projects a shadow line of sunlight onto the time scale on the bottom inside the lid when the lid is open. The portable time measuring device according to claim 2, characterized in that: