JP2008295421A - Photovoltaic underwater thermometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underwater thermometer which is free from the troublesome work of the exchange of a battery and capable of sufficiently preventing the infiltration of water. <P>SOLUTION: The photovoltaic underwater thermometer 1 is provided with a water-temperature sensor, a holding case 2 having a transparent part at least at a part of the front face, a photovoltaic cell panel 4 placed in the case 2, a temperature displaying part 5 placed in the case 2 and displaying the water temperature measured by the water-temperature sensor, and a fixing means 6 for detachably fixing the thermometer on the inner face of the side wall of an aquarium. When the holding case 2 is fixed on the inner face of the sidewall of the aquarium via the fixing means 6, the thermometer satisfies two formulas 0°<α≤90° and 0°<β≤80°, wherein α is the angle (acute angle or right angle) between the light-receiving face of the photovoltaic cell panel 4, and the inner face of the sidewall of the aquarium and β is the angle (acute angle), between the displaying face of the temperature displaying part 5 and the inner face of the side wall of the aquarium. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an underwater thermometer used by being attached to an inner surface of a side wall of an aquarium such as an aquarium fish tank.

Conventionally, as an underwater thermometer, one having a configuration including a water temperature sensor for measuring water temperature and a water temperature display unit for displaying the water temperature measured by the water temperature sensor is known (see Patent Document 1). As an underwater thermometer for an aquarium, one using a battery as its power source is known.
JP 2001-186833 A

  However, the battery-type underwater thermometer has a problem that the battery has to be replaced periodically, and the trouble of replacing the battery is troublesome. Furthermore, it is necessary to provide an opening / closing lid for replacing the battery. However, if such an opening / closing lid is present, water easily enters from the gaps in this portion, so that there is a problem that trouble such as failure due to intrusion of water tends to occur. It was.

  The present invention has been made in view of such a technical background, and an object of the present invention is to provide an underwater thermometer capable of eliminating the troublesomeness of battery replacement and sufficiently preventing water from entering. .

  In order to achieve the above object, the present invention provides the following means.

[1] a water temperature sensor;
A storage case having at least a part of the front surface transparent;
A photovoltaic panel arranged in a position visible from the front side of the case in the housing case;
A temperature display unit that is disposed at a position visible from the front side of the case in the housing case and displays the water temperature measured by the water temperature sensor;
Fixing means that can be detachably fixed to the inner surface of the side wall of the aquarium,
When the storage case is fixed to the inner surface of the side wall of the water tank via the fixing means, the display surface of the temperature display unit is inclined to move away from the fixing wall surface from the bottom to the top. The angle (acute angle or right angle) formed between the light receiving surface of the photovoltaic panel and the inner surface of the side wall of the water tank is “α”, and the angle formed between the display surface of the temperature display unit and the inner surface of the side wall of the water tank (Acute angle) is “β”,
0 ° <α ≦ 90 ° Formula (S1)
0 ° <β ≦ 80 ° Formula (S2)
A photovoltaic power generation underwater thermometer characterized in that the following two relational expressions are satisfied.

[2] 5 ° ≦ α ≦ 60 ° Formula (S3)
5 ° ≦ β ≦ 60 ° Formula (S4)
α = β Formula (S5)
The photovoltaic power generation underwater thermometer according to item 1, wherein the three relational expressions are established.

[3] 15 ° ≦ α ≦ 90 ° Formula (S6)
0 ° <β ≦ 60 ° Formula (S7)
α> β Formula (S8)
The photovoltaic power generation underwater thermometer according to item 1, wherein the three relational expressions are established.

  [4] The photovoltaic power generation underwater thermometer according to any one of items 1 to 3, wherein the fastening means is provided on a lower side of the housing case.

  [5] The photovoltaic power generation underwater thermometer according to any one of items 1 to 4, wherein the fastening means includes a resin sucker body.

  [6] The photovoltaic power generation underwater thermometer according to any one of the preceding items 1 to 5, wherein the photovoltaic panel is disposed above the temperature display unit.

  In the invention of [1], since a photovoltaic cell panel is provided, power can be supplied by sunlight or light from indoor fluorescent lamps, etc., and it is not necessary to attach a conventional battery, and the battery is periodically replaced. It is freed from troublesome work such as doing. Further, it is not necessary to provide an opening / closing lid (opening / closing mechanism) for replacing the battery, and therefore water can be sufficiently prevented from entering. Further, when the storage case is fixed to the inner surface of the side wall of the water tank via the fixing means, the display surface of the temperature display portion is inclined to move away from the fixing wall surface from the bottom to the top. And an angle (acute angle or right angle) α formed between the light receiving surface of the photovoltaic panel and the inner surface of the side wall of the water tank and an angle (acute angle) β formed between the display surface of the temperature display unit and the inner surface of the side wall of the water tank. Since (S1) and Formula (S2) are established, the light receiving efficiency of the photovoltaic panel is good, and the display temperature (measured temperature) of the temperature display section is easy to see.

In the invention of [2], when the storage case is fixed to the inner surface of the side wall of the water tank via the fixing means,
5 ° ≦ α ≦ 60 ° Formula (S3)
5 ° ≦ β ≦ 60 ° Formula (S4)
α = β Formula (S5)
The light receiving efficiency of the photovoltaic panel can be further improved by satisfying the expression (S3), and the display temperature of the temperature display unit can be satisfied by satisfying the expression (S4). Becomes easier to see, and by satisfying the formula (S5), the housing case can be made compact.

In the invention of [3], when the storage case is fixed to the inner surface of the side wall of the water tank via the fixing means,
15 ° ≦ α ≦ 90 ° Formula (S6)
0 ° <β ≦ 60 ° Formula (S7)
α> β Formula (S8)
Are satisfied so that the display temperature of the temperature display section becomes easier to see by satisfying the expression (S7), and satisfying the expressions (S6) and (S8). The light receiving efficiency of the photovoltaic panel can be greatly increased. That is, there is an advantage that the light receiving efficiency of the photovoltaic cell panel can be remarkably increased while maintaining the visibility of the temperature display part sufficiently.

  In the invention of [4], since the fastening means is provided on the lower side of the housing case, the light incident on the photovoltaic panel is not blocked by the fastening means, and the light receiving efficiency of the photovoltaic panel is further improved. In addition, the visual recognition of the temperature display part is not blocked by the fastening means, and the display temperature of the temperature display part becomes easier to see.

  In the invention of [5], since the fastening means includes a suction cup body made of resin, the attaching and detaching operation of the fastening means to and from the water tank is easy and the fastening power is excellent.

  In the invention [6], since the photovoltaic panel is disposed above the temperature display portion, the light receiving efficiency of the photovoltaic panel can be further improved.

  1 to 4 show an embodiment (first embodiment) of a photovoltaic power generation thermometer (1) according to the present invention. 1-4, (2) is a storage case, (3) is a water temperature sensor, (4) is a photovoltaic panel, (5) is a temperature display part, and (6) is a fastening means.

  The housing case (2) is formed of a hollow resin case having a substantially rectangular parallelepiped shape, and at least a part of the front surface thereof is transparent. In the present embodiment, the region corresponding to the photovoltaic panel (4) and the region corresponding to the temperature display part (5) on the front surface of the housing case (2) are configured to be transparent. Moreover, in this embodiment, the storage case (2) consists of a front side half (2a) and a back side half (2b), which are closed in an opposing state and are sufficiently glued to each other at the periphery. Since the sealing is performed and sufficient water-tightness is ensured, water intrusion can be sufficiently prevented.

  A photovoltaic panel (4) is disposed on the front side of the substantially upper half of the internal space of the housing case (2) (see FIGS. 1, 2, and 6). This photovoltaic panel (4) is a substantially rectangular plate-like body, and is arranged so that its light receiving surface (4a) faces the front side (see FIG. 6). In the present embodiment, a solar cell panel is used as the photovoltaic cell panel (4).

  Moreover, the temperature display part (5) is arrange | positioned in the front side of the substantially lower half part in the internal space of the said storage case (2) (refer FIG.1, 2, 6). This temperature display part (5) is a substantially rectangular plate-like body, and is arranged so that its display surface (5a) faces the front side (see FIG. 6). This temperature display part (5) displays the water temperature measured by the water temperature sensor (3). In the present embodiment, a liquid crystal display panel is used as the temperature display section (5).

  Since the front surface (display surface) (5a) of the temperature display section (5) and the front surface (light receiving surface) (4a) of the photovoltaic panel (4) are configured to be substantially flush with each other, 2) can be made more compact.

  Moreover, the water temperature sensor (3) is arrange | positioned at the back side of the substantially lower half part in the internal space of the said storage case (2) (refer FIG. 3, 6). The tip on the back side of the water temperature sensor (3) is bonded to the inner wall surface of the back half (2b) of the housing case (2) via an adhesive, whereby the back half (2b) The water temperature transmitted through the water can be measured.

  In addition, a control circuit unit (CPU) (8) is disposed at the front-rear direction intermediate position (intermediate position in the thickness direction) of the substantially lower half of the internal space of the housing case (2). The control circuit unit (8) displays the water temperature measured by the water temperature sensor (3) on the display surface (5a) of the temperature display unit (5) by receiving power supply from the photovoltaic panel (4). It controls to do.

  A mounting portion (21) protruding downward is provided on the bottom surface of the housing case (2). As shown in FIG. 4, the attachment portion (21) includes a support shaft (23) extending downward from the bottom surface of the housing case (2), and a tip (lower end) of the support shaft (23). And a substantially semi-annular body (22) joined to each other. The substantially semi-annular body (22) has a configuration in which a part of the lower side of the annular ring is cut out, and the cut-out opening portion faces downward.

  On the other hand, as shown in FIG. 4, the fastening means (6) includes a resin sucker body (11) and a short shaft extending from the back surface to the back surface side of the sucker body (11). It consists of a support part (12). A fitting groove (13) is formed on the outer peripheral surface of the support portion (12).

  Thus, the substantially semi-annular body (22) of the attachment portion (21) on the bottom surface of the housing case (2) is fitted into the fitting groove (13) of the support portion (12) of the fastening means (6). The fastening means (6) is fixedly attached to the lower side of the housing case (2) by being externally fitted in the retracted state (see FIGS. 1, 3 and 6).

  An example of the attachment state to the water tank (90) of the thermometer for water (1) which concerns on the said structure is shown in FIG. The underwater thermometer (1) is fixed to the inner surface (91a) of the side wall (91) of the water tank (90) through the suction cup body (11) of the fixing means (6). At this time, the water temperature sensor (3) of the underwater thermometer (1) is fixed at a height position where it is immersed in the water in the water tank (90). In this embodiment, since it fastens with the suction cup body (11), it can be detachably fastened to the water tank (90). If the light receiving surface (4a) of the photovoltaic panel (4) of the underwater thermometer (1) is irradiated with light such as sunlight or an indoor fluorescent lamp in the attached state, a control circuit is provided from the photovoltaic panel (4). Electric power is supplied to the section (8), whereby the temperature measured by the water temperature sensor (3) is displayed on the display surface (5a) of the temperature display section (5).

  FIG. 7 shows a second embodiment of the photovoltaic submersible thermometer (1) according to the present invention, and FIG. 8 shows an example of a state in which the submersible thermometer (1) is attached to the water tank (90). .

  In the second embodiment, as shown in FIG. 8, the light receiving surface (4a) of the photovoltaic panel (4) is configured to face upward from the display surface (5a) of the temperature display section (5). This is different from the first embodiment. Note that the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  FIG. 9 shows a third embodiment of the photovoltaic submersible thermometer (1) according to the present invention. In the third embodiment, the light receiving surface (4a) of the photovoltaic panel (4) is configured to be further upward than the second embodiment (FIG. 8) (so as to be even more horizontal). This is different from the second embodiment. Note that the same components as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  If the configuration as in the second and third embodiments is adopted, the inclination angle of the display surface (5a) of the temperature display section (5) and the inclination angle of the light receiving surface (4a) of the photovoltaic panel (4) are respectively unique. Therefore, there is an advantage that the light receiving efficiency of the photovoltaic panel (4) can be further increased while ensuring the visibility of the temperature display section (5).

Therefore, in this invention, when the storage case (2) is fixed to the inner surface (91a) of the side wall of the water tank (90) via the fixing means (6), it is shown in FIGS. As described above, the display surface (5a) of the temperature display section (5) is configured to be an inclined surface away from the fixing wall surface from the bottom to the top, and the light receiving surface (4a) of the photovoltaic panel (4). ) And the side wall inner surface (91a) of the water tank (90) is defined as “α”, the display surface (5a) of the temperature display section (5) and the side wall inner surface (91a) of the water tank (90). When the angle (acute angle) between and is “β”,
0 ° <α ≦ 90 ° Formula (S1)
0 ° <β ≦ 80 ° Formula (S2)
The two relational expressions are established. In this way, the display surface (5a) of the temperature display unit (5) is configured to be an inclined surface away from the fastening wall surface from the bottom to the top, and the expressions (S1) and (S2) are established. By being comprised so that the light reception efficiency of a photovoltaic cell panel (4) is favorable, the display temperature (measurement temperature) of a temperature display part (5) becomes easy to see.

Among them, when the storage case (2) is fixed to the inner surface (91a) of the side wall of the water tank (90) via the fixing means (6),
5 ° ≦ α ≦ 60 ° Formula (S3)
5 ° ≦ β ≦ 60 ° Formula (S4)
α = β Formula (S5)
It is preferable that these three relational expressions are satisfied (see FIG. 6). In this case, the light receiving efficiency of the photovoltaic panel (4) can be further improved by satisfying the formula (S3), and the display temperature of the temperature display section (5) is easier to see by satisfying the formula (S4). Further, the storage case (2) can be made compact by satisfying the formula (S5). Among them, it is particularly preferable to adopt a configuration that satisfies 10 ° ≦ α ≦ 55 °, 10 ° ≦ β ≦ 55 °, and α = β.

Alternatively, when the storage case (2) is fixed to the inner surface (91a) of the side wall of the water tank (90) via the fixing means (6),
15 ° ≦ α ≦ 90 ° Formula (S6)
0 ° <β ≦ 60 ° Formula (S7)
α> β Formula (S8)
It is preferable that these three relational expressions are satisfied (see FIGS. 8 and 9). In this case, when the expression (S7) is satisfied, the display temperature of the temperature display section (5) becomes easier to see, and when the expression (S6) and the expression (S8) are satisfied, the light reception of the photovoltaic panel (4) is achieved. The efficiency can be greatly increased. Among them, it is particularly preferable to adopt a configuration that satisfies 20 ° ≦ α ≦ 90 °, 10 ° <β ≦ 55 °, and α> β.

  In the above embodiment, the fastening means (6) is provided on the lower side of the housing case (2). However, the fastening means (6) is not particularly limited to such a configuration. It may be provided on the side or may be provided above the housing case (2). However, the fastening means (6) is located on the lower side of the housing case (2) in that the light receiving efficiency of the photovoltaic panel (4) can be further improved and the display temperature of the temperature display section (5) becomes easier to see. Preferably it is provided.

  Moreover, in the said embodiment, although the structure provided with the suction cup body (11) was employ | adopted as a fastening means (6), it is not limited to such a structure in particular, A water tank (90) Any means may be used as long as it can be detachably attached to the side wall (91).

  Moreover, in the said embodiment, although the photovoltaic cell panel (4) was arrange | positioned above the temperature display part (5), it is not specifically limited to such a structure, For example, photovoltaic cell panel (4) is The temperature display unit (5) may be disposed on the lower side, or one may be arranged on the left side and the other on the right side (at the same height position).

  The photovoltaic power generation submersible thermometer (1) according to the present invention is not particularly limited to that of the above-described embodiment, and any design change is within the scope of the claims, as long as it does not depart from the spirit thereof. Is also allowed.

It is a perspective view which shows one Embodiment of the photovoltaic power generation type | mold underwater thermometer which concerns on this invention. It is also a front view. It is a back view similarly. It is a perspective view which shows the thermometer for water of FIG. 1 in a separation state. It is a perspective view which shows an example of the attachment state to the water tank of the thermometer for water. It is a side view for demonstrating the attachment angle in the same attachment state. It is a perspective view which shows other embodiment of the photovoltaic power generation type | mold underwater thermometer which concerns on this invention. It is a side view for demonstrating the attachment angle of the state which attached the thermometer for water of FIG. 7 to the water tank. It is a side view which shows the other embodiment of the photovoltaic power generation type thermometer for this invention attached to the water tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Photovoltaic-type underwater thermometer 2 ... Housing case 3 ... Water temperature sensor 4 ... Photovoltaic panel 4a ... Photosensitive panel of photovoltaic panel 5 ... Temperature display part 5a ... Display surface of temperature display part 6 ... Fixing means 11 ... Suction cup body 90 ... Water tank 91 ... Side wall 91a ... Inner surface of side wall

Claims (6)

A water temperature sensor,
A storage case having at least a part of the front surface transparent;
A photovoltaic panel arranged in a position visible from the front side of the case in the housing case;
A temperature display unit that is disposed at a position visible from the front side of the case in the housing case and displays the water temperature measured by the water temperature sensor;
Fixing means that can be detachably fixed to the inner surface of the side wall of the aquarium,
When the storage case is fixed to the inner surface of the side wall of the water tank via the fixing means, the display surface of the temperature display unit is inclined to move away from the fixing wall surface from the bottom to the top. The angle (acute angle or right angle) formed between the light receiving surface of the photovoltaic panel and the inner surface of the side wall of the water tank is “α”, and the angle formed between the display surface of the temperature display unit and the inner surface of the side wall of the water tank (Acute angle) is “β”,
0 ° <α ≦ 90 ° Formula (S1)
0 ° <β ≦ 80 ° Formula (S2)
A photovoltaic power generation underwater thermometer characterized in that the following two relational expressions are satisfied. 5 ° ≦ α ≦ 60 ° Formula (S3)
5 ° ≦ β ≦ 60 ° Formula (S4)
α = β Formula (S5)
The photovoltaic power generation underwater thermometer according to claim 1, wherein the three relational expressions are established. 15 ° ≦ α ≦ 90 ° Formula (S6)
0 ° <β ≦ 60 ° Formula (S7)
α> β Formula (S8)
The photovoltaic power generation underwater thermometer according to claim 1, wherein the three relational expressions are established.   The photovoltaic power generation submersible thermometer according to any one of claims 1 to 3, wherein the fastening means is provided on a lower side of the housing case.   The photovoltaic power submersible thermometer according to any one of claims 1 to 4, wherein the fastening means includes a resin suction cup body.   The photovoltaic solar water thermometer according to any one of claims 1 to 5, wherein the photovoltaic panel is disposed above the temperature display section.

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