Magnetic illumination device

Abstract

To provide a magnetic illumination device which does not require a new article to be manufactured when changing characters or graphics to be displayed, and thus, reduces manufacturing costs.SOLUTION: A magnet sheet with electrodes includes: a thin first electrode pattern 31 which is laminated in a surface region corresponding to an N pole 21 on a magnet sheet 20 where multipolar magnetized patterns are formed, and in which laminates are electrically connected to each other; and a thin second electrode pattern 32 which is insulated from the first electrode pattern, and is laminated in a surface region corresponding to an S pole 22 on the magnet sheet 20, and in which laminates are electrically connected to each other. In a light-emitting body chip 4, tip portions 41T, 42T of two energizing terminals are provided in bilateral symmetry so as to project by the same minute length from a rear surface of a magnet piece, at a width position less than a pitch width of the magnet sheet, with a magnetized line 53 of the magnet piece as a boundary, and a power source 6 applies a potential difference between the first and second electrode patterns.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a magnetic decorative device, and more particularly to an advertising device that is installed and used in, for example, a showcase, a storefront, a booth at an exhibition hall, etc., and a device suitable for interior wall decoration.

Background Art

[0002] Conventionally, there is a decorative signboard as an advertising device installed in a showcase, a storefront, a booth at an exhibition hall, etc. There are various types of decorative signboards, including a direct emission type in which characters, figures, etc. are drawn by the emission of a plurality of LEDs (light emitting diodes), and a backlight type in which characters, figures, etc. drawn on a screen are made to float by the emission of a light emitter installed on the back surface of the screen.

[0003] For example, in the information display signboard of Patent Document 1 adopting the former type, a display substrate is one of the components. This display substrate is for mounting and arranging an LED, a drive circuit board, etc., and a large number of LEDs are arranged in a dot pattern so that characters and / or numbers can be displayed. Further, for example, in the light emitting signboard of Patent Document 2 adopting the latter type, it has a back panel on which an LED is attached and a front light shielding sheet having a character-shaped through hole with a certain width, and the through hole portion becomes a light transmitting portion of the light from the LED on the back to light up the characters.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, it is often desired to change the display content of a signboard. For example, it is a phrase for introducing exhibits in a show window that changes every season, or a phrase in an exhibition booth that is updated for each event. In the signboard of Patent Document 1, when it is desired to change characters or figures, it is necessary to replace the display substrate itself with a new one, which is costly and time-consuming. Also, in the light-emitting signboard of Patent Document 2, when it is desired to change characters or figures, since it is necessary to change the shape of the through holes, it is necessary to change the front light-shielding sheet, and this also involves high production costs and time.

[0006] The present invention has been made paying attention to the above circumstances, and an object thereof is to provide a magnetic attachment type electric ornament device capable of reducing production costs without the need to manufacture new articles when changing the displayed characters or figures.

Means for Solving the Problem

[0007] The present invention takes the following means to solve the above problems. The reference numerals in parentheses attached to each constituent means in this column (the column of "Means for Solving the Problem") are for reference to show the correspondence with the specific means described in the embodiments described later, and the constituent means of the present invention are not limited thereto.

[0008] In one aspect of the present invention, there is provided a magnetically attached lighting device (1) having a magnet sheet with electrodes (2), a plurality of light-emitting element chips (4), and a power source (6). The magnet sheet with electrodes (2) includes a magnet sheet (20) having a parallel stripe-shaped multi-pole magnetization pattern on its surface where strip-shaped N poles (21) and S poles (22) alternately appear, a first electrode pattern (31) of a certain thickness that is laminated on the surface region corresponding to the N pole (21) in the magnet sheet (20) and whose stacked layers are electrically connected to each other, and a second electrode pattern (32) of a certain thickness that is insulated from the first electrode pattern (31) and is laminated on the surface region corresponding to the S pole (22) in the magnet sheet (20) and whose stacked layers are electrically connected to each other. The light-emitting element chip (4) is formed by integrating a light-emitting element (40) and a magnet piece (50). The light-emitting element (40) includes two energization terminals (41, 42). The tips (41T, 42T) of the two energization terminals (41, 42) are symmetrically provided on both sides with respect to the magnetization line (53) of the magnet piece (50) and protrude from the back surface of the magnet piece (50) by the same minute length at a width position less than the pitch width (P) of the magnet sheet (20) in the magnet sheet with electrodes (2) from the magnetization line (53). The power source (6) is configured to apply a potential difference between the first electrode pattern (31) and the second electrode pattern (32).

[0009] In another aspect of the present invention, the first electrode pattern (31) and the second electrode pattern (32) are each made of any one of steel foil, stainless steel foil, aluminum foil, copper foil with a thickness of 25 μm to 200 μm, or conductive rubber with a thickness of 300 μm to 1 mm.

[0010] In another aspect of the present invention, an insulating substance is interposed between the first electrode pattern (31) and the second electrode pattern (32).

Effects of the Invention

[0011] According to the present invention, there is provided a magnetically attached lighting device that can reduce manufacturing costs without the need to manufacture new articles when changing the displayed characters and graphics.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that the scales and angles of the members shown in the accompanying drawings do not necessarily match the actual objects, and are adjusted to appropriate sizes for easy illustration. Also, in this specification, "~" is used in the sense of including the numerical values described before and after it as the lower limit value and the upper limit value.

[0014] FIG. 1 is an external perspective view of the magnetic attachment type electric ornament device 1 of the first embodiment. FIG. 2 is a view showing the structure of the magnet sheet 2 with an electrode, (a) shows a front view, and (b) shows a side view (a view seen from the direction of arrow A in (a)). FIG. 3 is a view showing the light emitting body chip 4, (a) shows a front view, and (b) shows a bottom view. FIG. 4 is a basic circuit diagram of the magnetic attachment type electric ornament device 1.

[0015] As shown in FIG. 1, the magnetic attachment type electric ornament device 1 includes a magnet sheet 2 with an electrode, a plurality of light emitting body chips 4, and a power source 6. In the magnetic attachment type electric ornament device 1, a plurality of light emitting body chips 4 can be magnetically attached and made to emit light at an arbitrary position of the magnet sheet 2 with an electrode.

[0016] The magnet sheet 2 with electrodes has a magnet sheet 20, a first electrode pattern 31, and a second electrode pattern 32, as shown in Fig. 2.

[0017] The magnet sheet 20 is a flexible sheet-shaped magnet body with a thickness of 0.4 mm to 5 mm, and a parallel stripe-shaped multi-pole magnetization pattern in which strip-shaped N poles and S poles alternately appear on the surface is formed. That is, as shown in Fig. 2, on each of the front and back surfaces thereof, magnetic poles (N pole 21 and S pole 22) with different polarities and a constant width are alternately formed at equal intervals in a stripe shape, and it has a multi-pole magnetization type with magnetization lines 23 having a constant pitch width P. Here, the magnetization line 23 is an imaginary boundary line between any one magnetic pole 21 on the surface of the multi-pole magnetized magnet sheet 20 and the adjacent magnetic pole 22 with a different polarity.

[0018] In reality, it is a portion that appears white when a magnetic view sheet (a film in which microcapsules of magnetic fluid are uniformly dispersed) is adhered, and it is a region where the magnetic field in the normal direction of the magnet sheet surface, that is, the direction perpendicular to the surface, is extremely weak or zero. That is, the magnetization line 23 means an imaginary line on the sheet surface. In the side view of Fig. 2(b), the magnetization line 23 is located at both ends in the thickness direction of the magnet sheet 20. The pitch width P of the magnetization line 23, that is, the distance between adjacent magnetization lines 23, is set to 1.5 to 7.0 mm.

[0019] Both the first electrode pattern 31 and the second electrode pattern 32 are made of a thin conductive material, for example, steel foil, stainless steel foil, aluminum foil, copper foil with a thickness of 25 μ to 200 μ, or conductive rubber with a thickness of 300 μ to 1 mm, and are laminated on the surface region of the magnet sheet 20 via an adhesive (not shown). Specifically, the first electrode pattern 31 is laminated on the surface region corresponding to the N pole 21 in the magnet sheet 20, and one end portions 31T are connected to be electrically conductive. The second electrode pattern 32 is insulated from the first electrode pattern 31, is laminated on the surface area corresponding to the S pole 22 in the magnet sheet 20, and the other ends 32T different from the first electrode pattern 31 are connected to be electrically conductive.

[0020] In manufacturing the first electrode pattern 31, for example, a plurality of strip-shaped conductive materials cut to be slightly narrower than the width of the N pole of the magnet sheet 20 are arranged at a distance slightly wider than the pitch width P of the magnet sheet 20 so that the conductive materials are parallel and opposed to each other, and one ends in the longitudinal direction of the conductive materials are connected to be electrically conductive by a conductive material to form a substantially comb shape. Alternatively, it may be manufactured by punching with a mold that can be formed into the substantially comb shape. The same applies to the second electrode pattern 32.

[0021] As shown in FIG. 3, the light-emitting element chip 4 is composed of an LED 40 and a magnet piece 50. The LED 40 includes a light-emitting portion 43, an anode terminal 41, and a cathode terminal 42. The light-emitting portions 43 of the plurality of light-emitting element chips 4 may all be the same color, or may be provided in various colors such as red, blue, green, yellow, and orange.

[0022] The magnet piece 50 is, for example, a magnet sheet having the same thickness and magnetization pitch as the magnet sheet 20 in the magnet sheet 2 with electrodes, cut into a substantially square shape in plan view with a magnetization line 53 positioned at the center and including one N pole 51 and one S pole 52 on both sides thereof. The magnet piece 50 includes terminal holes 54a and 54b penetrating in the thickness direction symmetrically about the magnetization line 53. The anode terminal 41 and the cathode terminal 42 of the LED 40 penetrate the terminal holes 54a and 54b of the magnet piece 50, respectively, and their tips 41T and 42T protrude from the back surface of the magnet piece 50 by the same minute length.

[0023] The power source 6 is a DC power source. As shown in FIG. 4, its positive side is connected to the first electrode pattern 31, and its negative side is connected to the second electrode pattern 32 via a switch 61.

[0024] Next, the functions of the magnetic decorative device 1 will be described with reference to FIG. 5. FIG. 5 is a diagram showing the attachment state of the light-emitting body chip 4 to the magnet sheet 2 with electrodes, where (a) shows a front view and (b) shows a side view (a view seen from the direction of arrow A in (a)). In FIG. 5, the switch 61 of the power supply 6 is in the ON state.

[0025] When attaching the light-emitting body chip 4 to the magnet sheet 2 with electrodes, first, pick up one light-emitting body chip 4 with a finger and hold it so that the back surface of the magnet piece 50 faces the vicinity of the target position on the surface of the magnet sheet 2 with electrodes. Then, bring the back surface of the magnet piece 50 close to this position. At this time, since both the first electrode pattern 31 and the second electrode pattern 32 are thin, the N pole 51 of the magnet piece 50 and the S pole 22 of the magnet sheet 2 with electrodes tend to attract each other with the second electrode pattern 32 intervening, and the S pole 52 of the magnet piece 50 and the N pole 21 of the magnet sheet 2 with electrodes tend to attract each other with the first electrode pattern 31 intervening.

[0026] That is, the magnet piece 50 magnetically adheres at a position where its magnetization line 53 coincides with the magnetization line 23 of the magnet sheet 20 of the magnet sheet 2 with electrodes and the magnetic poles 51, 52 on both sides of the magnetization line 53 are opposite to those of the electro-magnet sheet 20. Therefore, if there is a deviation between the center line of the target position and the position where this magnetization line 23 coincides, the light-emitting body chip 4 will be magnetically adhered to a position slightly deviated from the target.

[0027] The tips 41T of the anode terminals 41 of the light-emitting element chip 4 and the tips 42T of the cathode terminals 42 are symmetrically provided on the left and right at width positions less than the pitch width P of the magnet sheet 20 of the magnet sheet 2 with electrodes across the magnetization line 53 of the magnet piece 50, and protrude by the same minute length from the back surface of the magnet piece 50. For this reason, when the magnet piece 50 is magnetized, the tip 41T of the anode terminal 41 of the light-emitting element chip 4 abuts on the surface of the first electrode pattern 31, and the tip 42T of the cathode terminal 42 of the light-emitting element chip 4 abuts on the surface of the second electrode pattern 32.

[0028] Thereby, the LED 40 is energized and the light-emitting portion 43 emits light. When it is desired to magnetize at a position where the magnetic poles of the light-emitting element chip 4 and the magnetic poles of the magnet sheet 2 with electrodes are the same poles, they will repel each other. In this case, the light-emitting element chip 4 is arranged by being inverted 180 degrees around an axis perpendicular to its bottom surface. That is, the position where the light-emitting element chip 4 can be magnetized to the magnet sheet 2 with electrodes is limited to the position where the magnetization line 53 of the magnet piece 50 and the magnetization line 23 of the magnet sheet 20 of the magnet sheet 2 with electrodes coincide and the magnetic poles on both sides thereof are opposite to each other with the magnet sheet 2 with electrodes. For other light-emitting element chips 4, they are also magnetized by the same method, and for example, a luminous character "K" as shown in FIG. 1 can be drawn.

[0029] In this way, the light-emitting element chip 4 can be magnetized at an arbitrary position in the longitudinal direction of the magnetic pole or electrode in the magnet sheet 2 with electrodes, and in the direction perpendicular thereto, in units of the pitch width P of the magnet sheet 2 with electrodes. That is, since it can be attached and detached at almost any position on the two-dimensional plane, an arbitrary electrical decoration pattern can be drawn, and it is also possible to draw while modifying the electrical decoration pattern. It is also easy to change to a completely different electrical decoration pattern. As described above, in the magnetic attachment type electrical decoration device 1, when changing the displayed characters or figures, there is no need to manufacture a new article, and the manufacturing cost can be reduced.

[0030] [First Modification Example] In the magnetically-attached type electric ornament device of the first modification example, an insulating material is interposed between the first electrode pattern 31 and the second electrode pattern 32 in the magnet sheet 2 with electrodes. Examples of the insulating material include non-conductive synthetic resins and the like. According to this example, a short circuit between the first electrode pattern 31 and the second electrode pattern 32 can be surely prevented.

[0031] [Second Modification Example] In the magnetically-attached type electric ornament device of the second modification example, the anode terminal 41 and the cathode terminal 42 of the light-emitting body chip 4 are pointed. Also, a thin decorative sheet made of a soft magnetic material is magnetically attached to the surface side where the first electrode pattern 31 and the second electrode pattern 32 of the magnet sheet 2 with electrodes are formed. This thin decorative sheet is obtained by laminating a design layer on the surface of a sheet body formed by spreading a mixture of soft magnetic powder and a binder in a sheet shape. In this example, since the anode terminal 41 and the cathode terminal 42 are pointed, when attaching the light-emitting body chip 4 to the magnet sheet 2 with electrodes, the anode terminal 41 and the cathode terminal 42 of the light-emitting body chip 4 can penetrate the thin decorative sheet. The anode terminal 41 and the cathode terminal 42 that have penetrated the thin decorative sheet come into contact with the first electrode pattern 31 and the second electrode pattern 32, and the LED 40 lights up.

[0032] As described above, the embodiments of the present invention have been described. However, the embodiments disclosed above are merely examples, and the scope of the present invention is not limited to these embodiments. The scope of the present invention is indicated by the description in the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. That is, the overall or partial structure, shape, material, number, mounting position, application, etc. of the magnetically-attached type electric ornament device 1 can be appropriately changed in accordance with the gist of the present invention. [Industrial Applicability]

[0033] It can be widely used as an advertising device installed and used in a showcase, at a storefront, in a booth at an exhibition venue, etc., and as a device suitable for interior wall decoration.

Explanation of symbols

[0034] 1 Magnetic attachment type electric decoration device 2 Electrode-equipped magnetic sheet 4 Light-emitting element chip 6 Power supply 20 Magnetic sheet 21 N pole 22 S pole 31 First electrode pattern 32 Second electrode pattern 40 LED (light-emitting element) 41 Anode terminal (energization terminal) 42 Cathode terminal (energization terminal) 41T Tip 42T Tip 50 Magnetic piece 53 Magnetizing wire P Pitch width

Claims

1. A magnetic attachment type electric ornament device having a magnet sheet with electrodes, a plurality of light-emitting element chips, and a power source, The magnet sheet with electrodes includes a magnet sheet having a parallel stripe-shaped multi-pole magnetization pattern in which strip-shaped N poles and S poles alternately appear on the surface, a first electrode pattern of a thickness laminated on the surface region corresponding to the N pole in the magnet sheet and having electrical continuity between the laminated bodies, and a second electrode pattern of a thickness laminated on the surface region corresponding to the S pole in the magnet sheet, insulated from the first electrode pattern and having electrical continuity between the laminated bodies. The light-emitting element chip is formed by integrating a light-emitting element and a magnet piece. The light-emitting element includes two energization terminals. The tips of the two energization terminals are symmetrically provided on both sides of the magnetization line of the magnet piece, each protruding from the back surface of the magnet piece by the same minute length at a width position less than the pitch width of the magnet sheet in the magnet sheet with electrodes with respect to the magnetization line. The power source is configured to apply a potential difference between the first electrode pattern and the second electrode pattern. A magnetic attachment type electric ornament device characterized by this.

2. The magnetic wall surface electric ornament device according to claim 1, wherein the first electrode pattern and the second electrode pattern are each made of any one of steel foil, stainless steel foil, aluminum foil, and copper foil having a thickness of 25 μm to 200 μm, or conductive rubber having a thickness of 300 μm to 1 mm.

3. The magnetic wall surface electric ornament device according to claim 1 or claim 2, wherein an insulating substance is interposed between the first electrode pattern and the second electrode pattern.

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