Light and shadow experiment integrated box

Abstract

The utility model discloses a light and shadow experiment integrated box which comprises a box body, a flashlight and a to-be-illuminated object block, the box body is a concave trihedron, a semicircular scale plate is fixedly installed at the top end of the box body, and a rotating rail is rotatably installed at the circle center of the scale plate; a moving seat is slidably mounted on the rotating rail and is used for bearing a flashlight; longitudinal strip-shaped through grooves are symmetrically formed in the two side faces of the box body and used for movably installing the carrying rod in a penetrating mode, and the to-be-illuminated object block is arranged on the carrying rod and is kept on the same straight line with the flashlight. The rotary rail is arranged on the scale plate, the flashlight is installed on the rotary rail through the movable base, the illumination angle of the flashlight changes along with the rotary rail, and under the action of the scale plate, the control over the rotation angle is more accurate; the whole device is stable in structure, flexible in height adjustment and convenient to operate and observe.

Description

Technical Field

[0001] The utility model relates to the technical field of light and shadow experiments, in particular to a light and shadow experiment integrated box. Background Art

[0002] Shadow is a common optical phenomenon. It is a dark area formed when an object blocks the propagation of light and cannot pass through opaque objects. When teaching light and shadow in primary and secondary school physics, teachers need to demonstrate the formation of shadows and the influence of changes in the position of light sources on the formation of shadows in an all-round way. However, the existing light and shadow experiment instruments are usually complex in structure, and it is difficult to adjust the position and height of obstacles, so it is impossible to conduct all-round light and shadow experiments, which limits the scope of the experiment and affects the teaching effect.

[0003] The patent with application number CN202222061159.7 discloses a light and shadow experiment device, including a first wooden board and a central spring, a second wooden board is arranged above the first wooden board, and hinges are fixed with screws on both sides of the bottom end of the second wooden board, and colored tile iron sheets are glued to the middle position of the front side of the second wooden board and the first wooden board. In the utility model, through the positioning bracket, limiting groove, central spring and auxiliary support rod, before the experimental operation is required, and after a group of left and right auxiliary support rods are flipped and rotated, a group of auxiliary support rods quickly brought out from the inside of the limiting groove will serve as a bottom support structure to lift the entire experimental device and provide stable support force for the entire device.

[0004] At the same time, the principle of light and shadow is mainly reflected by the angle of light and the shadow of the object itself. In daily life, there are artificial light and natural light, and the light and shadow formed by these two kinds of light are basically different. In daily life, it is not difficult to find that the sunlight and the shadow of the light are different. In outdoor and indoor environments, the same object will have different shadow performances. Therefore, when drawing shadows, we must also pay attention to the setting of the light source. In the relevant exploration activities of light and shadow, students can carry out corresponding experimental activities through the light and shadow experimental device. When using the light and shadow experimental device on the market, due to the overall height limitation, it is not convenient for students to perform precise experimental operations in a way that the line of sight is level within the appropriate height range. When conducting experimental operations by fixing the operating panel at right angles, the single wooden board in a vertical state is prone to tilting and will directly affect the stability of the device when conducting experimental operations.

[0005] Therefore, in order to solve the problems of unstable projection structure, easy to tip over and inconvenient to observe and draw, we proposed a light and shadow experiment integrated box. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a light and shadow experiment integrated box.

[0007] The technical solution of the utility model is as follows:

[0008] The invention discloses an integrated box for light and shadow experiment, comprising a box body, a flashlight and an object to be illuminated. The box body is a concave trihedron, a semicircular scale plate is fixedly mounted on the top of the box body, a rotating rail is rotatably mounted at the center of the scale plate; a moving seat is slidably mounted on the rotating rail, and the moving seat is used to carry the flashlight; longitudinal strip through grooves are symmetrically provided on the two side surfaces of the box body for passing through a movable mounting carrying rod, the object to be illuminated is arranged on the carrying rod, and the object to be illuminated is kept in the same straight line with the flashlight.

[0009] Preferably, the rotating rail is U-shaped and is rotatably mounted on the scale plate via a fixing pin, and the fixing pin sequentially penetrates one side of the rotating rail, the scale plate and the other side of the rotating rail.

[0010] Preferably, a plurality of slots are provided on two side surfaces of the box body, and the slots are longitudinally distributed for accommodating the object-carrying rods.

[0011] Preferably, the movable seat is movably mounted on one side of the rotating rail in a "J" shape, and a long slot hole is provided on the side of the rotating rail where the movable seat is mounted. The movable seat is fastened to the rotating rail after a positioning bolt passes through the long slot hole.

[0012] Preferably, a through hole is provided on the movable seat for inserting a flashlight, and a locking protrusion is provided on the handle of the flashlight to abut against the movable seat.

[0013] The utility model has the following beneficial effects: the utility model arranges a rotating rail on the scale plate, and installs the flashlight on the rotating rail through a moving seat. The flashlight follows the rotating rail to change the irradiation angle, and under the action of the scale plate, the rotation angle control is more precise; at the same time, the moving seat is fixed to the rotating rail by a positioning bolt, and by adjusting the fixing position of the positioning bolt, the moving seat can make a linear reciprocating motion along the diameter direction, thereby adjusting the distance of the light source irradiation; at the same time, the position of the carrier rod on the box body can also be adjusted to control the irradiation distance and freely adjust the height; the overall device has a stable structure and flexible height adjustment, which is convenient for operation and observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side structural schematic diagram of the box body of the utility model;

[0016] Figure 3 This is a structural sectional view of the rotary rail of the utility model.

[0017] The reference numerals in the figure are as follows:

[0018] 1. Box body; 2. Carrying rod; 3. Card slot; 4. Object to be illuminated; 5. Scale plate; 6. Rotating rail; 7. Flashlight; 8. Moving seat; 9. Fixing pin; 10. Positioning bolt; 11. Card position protrusion. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 3 A light and shadow experiment integrated box includes a box body 1, a flashlight 7 and an object block 4 to be illuminated. The box body 1 is a concave trihedron. In this embodiment, the box body 1 is made of a transparent acrylic panel, and a transparent movable cover is laid on the top of the box body 1. A light-proof receiving screen is also required for intuitively showing the generation of shadows. Grid paper is laid on the bottom of the box body 1 for students to copy the size, length and shape of the shadow.

[0021] A semicircular scale plate 5 is fixedly installed on the top of the box body 1, and a rotating rail 6 is rotatably installed at the center of the scale plate 5; a moving seat 8 is slidably installed on the rotating rail 6, and the moving seat 8 is used to carry a flashlight 7; longitudinal strip through grooves are symmetrically opened on the two side surfaces of the box body 1 for passing through a movable mounting carrier rod 2, and the object block 4 to be illuminated is arranged on the carrier rod 2, and the object block 4 to be illuminated is kept in the same straight line with the flashlight 7.

[0022] Furthermore, the rotating rail 6 is U-shaped and is rotatably mounted on the scale plate 5 via a fixing pin 9 , and the fixing pin 9 passes through one side of the rotating rail 6 , the scale plate 5 and the other side of the rotating rail 6 in sequence.

[0023] Furthermore, a plurality of slots 3 are provided on two side surfaces of the box body 1 , and the slots 3 are longitudinally distributed and used to accommodate the object-carrying rods 2 ; the distance between the object-carrying rods 2 and the bottom of the box body 1 can be adjusted through a multi-stage arrangement.

[0024] Furthermore, the movable seat 8 is movably installed in a "J" shape on one side surface of the rotating rail 6. A long slot hole is opened on the side of the rotating rail 6 where the movable seat 8 is installed. The movable seat 8 is fastened to the rotating rail 6 after the positioning bolt 10 passes through the long slot hole.

[0025] Furthermore, a through hole is provided on the movable seat 8 for inserting the flashlight 7 , and a locking protrusion 11 is provided on the handle of the flashlight 7 to abut against the movable seat 8 .

[0026] Working principle of the utility model:

[0027] In the present utility model, first of all, the box body 1 is made of a transparent acrylic panel. At the same time, a transparent movable cover plate is laid on the top of the box body 1, which is used for intuitively showing that the generation of a shadow also requires an opaque receiving screen. A grid paper is laid at the bottom of the box body 1 for students to copy the size, length and shape of the shadow, etc.; then, a semi-circular scale plate 5 is fixedly installed at the top end of the box body 1. A rotating track 6 is rotatably installed at the center of the circle of the scale plate 5. The rotating track 6 is U-shaped. The scale plate 5 is clamped in the U-shaped recess of the rotating track 6 and is rotatably installed on the scale plate 5 through a fixed pin 9. And the fixed pin 9 sequentially passes through one side surface of the rotating track 6, the scale plate 5 and the other side surface of the rotating track 6. The rotating track 6 rotates around the fixed pin 9 as the rotation center. Angle values are set on the scale plate 5 to clearly and definitely show the rotation angle; secondly, a moving seat 8 is slidably installed on the rotating track 6. The moving seat 8 is used to carry the flashlight 7. The moving seat 8 is in a "ji" shape and is movably installed on one side surface of the rotating track 6. A long slot hole is opened on the side surface of the rotating track 6 where the moving seat 8 is installed. The moving seat 8 is fastened to the rotating track 6 through a positioning bolt 10 passing through the long slot hole. A through hole is opened on the moving seat 8 for passing through the flashlight 7. A clamping convex block 11 is provided on the handle of the flashlight 7 and abuts against the moving seat 8; then, longitudinal strip-shaped through slots are symmetrically opened on two side surfaces of the box body 1 for movably installing the object-carrying rod 2 in a penetrating manner. The object to be illuminated 4 is arranged on the object-carrying rod 2, and the object to be illuminated 4 is kept in the same straight line as the flashlight 7. The object to be illuminated 4 can be set in different shapes and is threaded onto the object-carrying rod 2 for performing a light illumination experiment. A plurality of card slots 3 are opened on two side surfaces of the box body 1. The card slots 3 are longitudinally distributed for accommodating the object-carrying rod 2; through a multi-stage setting form, the distance between the object-carrying rod 2 and the bottom of the box body 1 is adjusted, so as to facilitate students to observe the light and shadow phenomena at different distances.

[0028] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, are equally included in the patent protection scope of the present utility model.

Claims

1. A light and shadow experiment integrated box, comprising a box body (1), a flashlight (7) and an object to be illuminated (4), characterized in that: The box body (1) is a concave trihedron, a semicircular scale plate (5) is fixedly mounted on the top of the box body (1), and a rotating rail (6) is rotatably mounted at the center of the scale plate (5); a movable seat (8) is slidably mounted on the rotating rail (6), and the movable seat (8) is used to carry the flashlight (7); longitudinal strip through grooves are symmetrically opened on the two side surfaces of the box body (1) for penetrating a movable mounting rod (2), and the object block (4) to be illuminated is arranged on the object rod (2), and the object block (4) to be illuminated is kept in the same straight line as the flashlight (7).

2. The light and shadow experiment integrated box according to claim 1, characterized in that: The rotating rail (6) is U-shaped and is rotatably mounted on the scale plate (5) via a fixing pin (9), and the fixing pin (9) sequentially penetrates one side of the rotating rail (6), the scale plate (5) and the other side of the rotating rail (6).

3. The light and shadow experiment integrated box according to claim 1, characterized in that: A plurality of slots (3) are provided on two side surfaces of the box body (1), and the slots (3) are longitudinally distributed and used for accommodating the object carrying rod (2).

4. The light and shadow experiment integrated box according to claim 1, characterized in that: The movable seat (8) is movably mounted on a side surface of the rotating rail (6) in a "J" shape, and a long slot hole is provided on the side surface of the rotating rail (6) where the movable seat (8) is mounted. The movable seat (8) is fastened to the rotating rail (6) by a positioning bolt (10) passing through the long slot hole.

5. The light and shadow experiment integrated box according to claim 1, characterized in that: The movable seat (8) is provided with a through hole for inserting the flashlight (7), and the handle of the flashlight (7) is provided with a locking protrusion (11) which abuts against the movable seat (8).

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