Fractional demonstration device with lighting effect

Abstract

The utility model relates to a score demonstration device with a lighting effect, which comprises a substrate, a score line with the lighting effect is arranged on the substrate, a row of hollow grooves are uniformly distributed on the substrate above and below the score line, and projection cloth is arranged in the hollow grooves; an upper hollow fixing rod and a lower hollow fixing rod are fixedly arranged on the back face of the base plate, first light-emitting strips are arranged in the fixing rods, and a plurality of light-emitting open grooves are formed in the surfaces of the outer sides of the fixing rods. A projection ring is rotationally arranged on the outer side surface of the fixing rod in a damping manner, and a plurality of number grooves are formed in the projection ring in a surrounding manner; the projection rings are in one-to-one correspondence with the light-emitting slots, and the light-emitting slots are in one-to-one correspondence with the hollow-out slots. When the lighting effect score demonstration device is used, the projection ring needing to be adjusted is rotated, the number grooves corresponding to needed numbers are right opposite to the hollowed-out grooves, light rays emitted by the first light-emitting strips penetrate through the light-emitting open grooves, then irradiate the number grooves and are displayed on the projection cloth, the lighting effect score demonstration effect is achieved, and even if the light rays of the external environment are dark, the lighting effect score can be clearly displayed.

Description

TECHNICAL FIELD

[0001] The utility model relates to teaching aid technical field, more specifically, relate to a fraction demonstration device with light effect. BACKGROUND

[0002] The fraction learning is a relatively important link in the primary school mathematics course, when the students are educated to recognize the fraction, the teachers often use the fraction cognitive teaching aid, the traditional fraction cognitive teaching aid usually adopts the wooden base plate, draws the fraction line on the base plate, leaves a plurality of empty positions above and below the fraction line, additionally configures a plurality of square blocks with number marks to be placed into the empty positions, forms a plurality of fractions to demonstrate, the traditional fraction cognitive teaching aid is inconvenient to operate, and does not have the light effect, under the insufficient external light, the students a little far away often cannot see clearly, to solve the defect, need a fraction demonstration device with light effect. SUMMARY

[0003] The utility model provides a fraction demonstration device with light effect for solving the above-mentioned defects of prior art.

[0004] The utility model adopts the technical scheme that solves its technical problem:

[0005] A fraction demonstration device with light effect is constructed, wherein, the base plate is provided with fraction lines with light effect, a row of hollow grooves is arranged above and below the fraction lines on the base plate, and a projection cloth is arranged in the hollow groove; the back of the base plate is fixedly provided with two hollow fixing rods, a first light-emitting strip is arranged in the fixing rod, a plurality of light-emitting grooves are formed in the outer surface of the fixing rod; the projection ring is rotatably arranged on the outer surface of the fixing rod, a plurality of number grooves are arranged around the projection ring; the projection ring and the light-emitting groove are one-to-one corresponding, and the light-emitting groove and the hollow groove are one-to-one corresponding.

[0006] The fraction demonstration device with light effect, wherein, the back of the base plate is provided with a light shield, the two fixing rods and the plurality of projection rings are located in the light shield; the back of the light shield is provided with a plurality of adjusting grooves, and the adjusting grooves and the projection rings are one-to-one corresponding.

[0007] The fraction demonstration device with light effect, wherein, the two ends of the light shield are closed, and the fixing rods are fixedly arranged on the two ends of the light shield.

[0008] The fraction demonstration device with light effect, wherein, one end of the fixing rod is provided with a battery for supplying power to the first light-emitting strip inside, and the other end is provided with a switch for controlling the on-off of the first light-emitting strip.

[0009] The fraction demonstration device with light effect, wherein the light shield is detachably connected with the base plate.

[0010] The fraction demonstration device with light effect, wherein the plurality of number grooves correspond to numbers 0-9 respectively.

[0011] The fraction demonstration device with light effect, wherein the projection ring is arranged on the fixed rod, one end of the projection ring is rotatably connected with the fixed rod through a bearing, and the other end is dampingly rotatably connected with the fixed rod through a damping rotating shaft.

[0012] The fraction demonstration device with light effect, wherein the base plate is embedded with a second light-emitting strip at the fraction line.

[0013] The fraction demonstration device with light effect, wherein the base plate is embedded with a second light-emitting strip at the fraction line. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be further described below with reference to the drawings and embodiments. The drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings:

[0015] Figure 1 The fraction demonstration device with light effect, wherein the base plate is embedded with a second light-emitting strip at the fraction line.

[0016] Figure 2 The fraction demonstration device with light effect, wherein the base plate is embedded with a second light-emitting strip at the fraction line.

[0017] Figure 3 The fraction demonstration device with light effect, wherein the base plate is embedded with a second light-emitting strip at the fraction line. DETAILED DESCRIPTION

[0018] In order to make the utility model embodiment purposes, technical scheme and advantages more clearly, below will combine the technical scheme in the utility model embodiment to make clear, complete description, obviously, the described embodiment is the part embodiment of the utility model, rather than all embodiments. Based on the embodiment of the application, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] The fraction demonstration device with light effect of the preferred embodiment of the utility model, as shown in Figure 1 , simultaneously refer to Figure 2 And Figure 3 , including substrate 1, the substrate 1 is provided with fraction line 2 with light effect, the substrate 1 is located above and below fraction line 2 and is evenly distributed with a row of hollow slot 3, the hollow slot 3 is provided with projection cloth 30;The back of substrate 1 is fixedly provided with two hollow fixed rods 4, the first light bar 5 is arranged in the fixed rod 4, the outer surface of the fixed rod 4 is provided with a plurality of light-emitting slots 40;The outer surface of the fixed rod 4 is provided with a projection ring 6, which is rotatably provided with a plurality of digital grooves;Projection ring 6 and light-emitting slot 40 correspond one by one, light-emitting slot 40 and hollow slot 3 correspond one by one;

[0020] When using, by rotating the projection ring 6 (two rows of projection rings are distributed above and below) that needs to be adjusted, the digital slot corresponding to the required number is opposite to the hollow slot 3, the light emitted by the first light bar 5 is irradiated on the digital slot after passing through the light-emitting slot 40, and is displayed on the projection cloth 30, realizing the light effect fraction demonstration effect, which can be displayed very clearly even if the ambient light is dark, guaranteeing the teaching effect, the overall structure is simple, and the adjustment operation is very convenient.

[0021] Preferably, the back of substrate 1 is provided with a light shield 7, and the two fixed rods 4 and the plurality of projection rings 6 are located in the light shield 7;The back of the light shield 7 is provided with a plurality of adjusting grooves 70, and the adjusting grooves 70 correspond to the projection rings 6 one by one.

[0022] By adopting the design, the light can be further shielded, the use effect is avoided by light leakage, and the adjustment is not affected;In addition, the overall appearance is better, and it is more clean and beautiful.

[0023] Preferably, the light shield 7 can be designed into a straight trapezoidal shape in cross section, which is convenient to place on the desk.

[0024] Preferably, the light shield 7 is closed at both ends, the fixed rod 4 is fixed on the two ends of the light shield 7, and the light shield 7 is detachably connected with the substrate 1, which is convenient for assembly and processing, and has good integrity.

[0025] Preferably, one end of the fixed rod 4 is provided with a battery for supplying power to the first light bar 5 inside, and the other end is provided with a switch 41 for controlling the on-off of the first light bar 5, which is convenient for operation control.

[0026] Preferably, the plurality of digital slots correspond to the numbers 0-9 respectively, that is, the shapes of the digital slots correspond to the numbers 0-9 respectively; preferably, intervals can be arranged between adjacent digital slots to avoid mutual interference during adjustment.

[0027] Preferably, the projection ring 6 is sleeved on the fixed rod 4, and one end of the projection ring 6 is rotationally connected with the fixed rod 4 through a bearing 60, and the other end is rotationally connected with the fixed rod 4 through a damping rotating shaft 61; the rotation of the projection ring 6 is ensured to have damping force at the same time, and the rotation of the projection ring 6 is very stable.

[0028] Preferably, the second light bar 10 is embedded at the fraction line 2 of the base plate 1, which ensures the display effect, and the second light bar can be powered by a battery arranged on the base plate alone, and the on-off of the second light bar can be controlled by a separate switch.

[0029] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A fraction demonstration device with light effects, characterized in that, The utility model provides a kind of light effect display board, including substrate, the substrate is provided with the fraction line with light effect, the substrate is distributed and is arranged with a row of hollow slot above and below the fraction line, projection cloth is arranged in the hollow slot;The back of the substrate is fixedly provided with two hollow fixed rods, the first light bar is arranged in the fixed rod, the outer surface of the fixed rod is provided with a plurality of light-emitting slots;The outer surface of the fixed rod is provided with projection ring, and a plurality of digital slots are arranged on the projection ring;The projection ring and the light-emitting slot are one-to-one correspondence, and the light-emitting slot and the hollow slot are one-to-one correspondence.

2. The lighted fraction demonstration device of claim 1, wherein, The back of the substrate is provided with light shield, and the two fixed rods and a plurality of projection rings are located in the light shield;The back of the light shield is provided with a plurality of adjusting slots, and the adjusting slot and the projection ring are one-to-one correspondence.

3. The lighted fractional demonstration device of claim 2, wherein, The two ends of the light shield are closed, and the fixed rod is fixed on the two ends of the light shield.

4. The lighted fractional demonstration device of claim 3, wherein, One end of the fixed rod is provided with a battery for power supply of the first light bar, and the other end is provided with a switch for controlling the on-off of the first light bar.

5. The lighted fractional demonstration device of claim 2, wherein, The light shield and the substrate are detachably connected.

6. The lighted fractional demonstration device of claim 1, wherein, A plurality of digital slots correspond to numbers 0-9 respectively.

7. The lighted fractional demonstration device of claim 1, wherein, The projection ring is sleeved on the fixed rod, and one end of the projection ring is rotatably connected with the fixed rod through bearing, and the other end is dampingly rotatably connected with the fixed rod through damping shaft.

8. The lighted fractional demonstration device of claim 1, wherein, The substrate is embedded with a second light bar at the fraction line.

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