TWI890275B - Spherical curved surface device, projection paint composition - Google Patents

Abstract

The present invention provides a spherical curved surface device and a projection paint composition. The spherical curved surface device includes a supporting body and a projection screen disposed on the supporting body and including a projection coating. The projection coating forms a curved projection surface and is formed from a projection paint composition. The projection paint composition includes a resin component, a pigment component, an additive component, and a solvent component, wherein the pigment component includes a sanding powder having an average particle size ranging from 50 μm to 80 μm. The spherical curved surface device has a wide viewing angle due to the projection coating formed from the projection paint composition.

Description

Spherical surface device, projection paint composition

The present invention relates to a screen device, in particular to a spherical curved surface device, and a projection coating composition for forming a projection coating of the spherical curved surface device.

In a curved spherical device, each viewer's viewing position and angle may differ, and the projected image seen from different angles may be different. Therefore, how to make the projected image seen by each viewer nearly consistent—that is, how to expand the viewing angle of a spherical device—is a key issue in the field of spherical devices.

Therefore, the first object of the present invention is to provide a spherical curved surface device with a wide viewing angle.

Therefore, the spherical curved surface device of the present invention comprises: a supporting body; and a projection screen disposed on the supporting body and including a projection coating. The projection coating forms a curved projection surface and is formed from a projection lacquer composition. The projection lacquer composition comprises a resin component, a pigment component, an additive component, and a solvent component, and the pigment component includes sanding powder having an average particle size ranging from 50 μm to 80 μm.

Therefore, the second object of the present invention is to provide a projection lacquer composition.

Therefore, the projection lacquer composition of the present invention includes: a resin component; a pigment component including a sanding powder with an average particle size ranging from 50μm to 80μm; an additive component; and a solvent component.

The utility of the present invention is that the spherical curved surface device of the present invention has a wider viewing angle through the projection coating formed by the projection paint composition. The brightness of the projection image formed on the projection coating seen by the viewer from various viewing angles is almost uniform and has a stronger sense of three-dimensionality and color saturation.

Referring to Figures 1 and 2 , an embodiment of a spherical curved surface device 1 according to the present invention is shown. The spherical curved surface device 1 comprises a supporting body 2 and a projection screen 3 mounted on the supporting body 2. The projection screen 3 includes a primer layer 31 formed on the surface of the supporting body 2 and a projection coating layer 32 formed on the surface of the primer layer 31. The projection coating layer 32 forms a curved, matte projection surface 33.

The projection coating 32 is formed from a projection lacquer composition comprising a resin component, a pigment component, an additive component, and a solvent component. The resin component includes acrylic resin and polyurethane resin. The pigment component also includes acrylic pigment, rutile titanium dioxide, and a graining powder with an average particle size ranging from 50 μm to 80 μm. The graining powder is polymethyl methacrylate-based graining powder, and the rutile titanium dioxide is produced by a chlorination process. The additive component includes a UV absorber, a wetting and dispersing agent, a leveling agent, and an anti-settling agent. The solvent component includes ethylene glycol butyl ether, toluene, xylene, phosphomolybdic acid, ethylene glycol butyl ether acetate, and ethyl acetate. Taking the total weight of the projection paint composition as 100wt%, the resin component comprises 35wt% to 50wt% of the acrylic resin and 10wt% to 25wt% of the polyurethane resin, the pigment component comprises 8wt% to 15wt% of the acrylic pigment, 5wt% to 15wt% of the rutile titanium dioxide and 0.1wt% to 5wt% of the sanding powder, and the additive component comprises The invention comprises 1 wt % to 3 wt % of the ultraviolet absorber, 0.5 wt % to 1.5 wt % of the wetting dispersant, 0.2 wt % to 1 wt % of the leveling agent, and 2 wt % to 4 wt % of the anti-settling agent. The total amount of the solvent component is 15 wt % to 30 wt % and comprises ethylene glycol butyl ether, toluene, xylene, phosphonic acid, ethylene glycol butyl ether acetate, and ethyl acetate.

In this embodiment, based on the total weight of the projection paint composition being 100 wt%, the resin component comprises 38.5 wt% of an acrylic resin and 15.6 wt% of a polyurethane resin; the pigment component comprises 10.6 wt% of an acrylic pigment, 9.1 wt% of rutile titanium dioxide, and 1.2 wt% of polymethyl methacrylate texture powder (average particle size of 65 μm); and the additive component comprises 1.4 wt% of a UV absorber [specifically, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole, CAS No. 3864-99-1]. , 0.7wt% of a wetting dispersant, 0.4wt% of a leveling agent (specifically polydimethylsiloxane) and 2.7wt% of an anti-settling agent. The total amount of the solvent component is 19.8wt% and includes ethylene glycol butyl ether, toluene, xylene, phosphonic acid, ethylene glycol butyl ether acetate and ethyl acetate.

In this embodiment, the thickness of the projection coating 32 ranges from 25 μm to 150 μm.

Referring to FIG. 3 , there is shown a projection image formed on the projection surface 33 of the projection coating 32, and a projection image formed on a curved and flat projection surface formed by a projection coating serving as a control group (hereinafter referred to as the projection coating control group). The difference between the projection coating 32 and the projection coating control group is that the projection coating 32 is formed by applying and drying the projection coating composition containing the sanding powder, while the projection coating control group is formed by applying and drying a commercially available projection coating composition that does not contain any sanding powder. As can be clearly seen from the projection image in FIG3 , the projection image formed on the projection coating 32 has a more obvious contrast compared to the projection image formed on the projection coating control group. The projection image seen by the viewer from all viewing angles exhibits a higher sense of three-dimensionality and color saturation.

Refer to Figure 4 and Table 1 for the results of a luminometer analysis of the projection coating 32 and a control group of projection coatings. As can be seen from the luminance (L _v ) in Figure 4 and the gain values in Table 1, compared to the control group, which exhibits greater fluctuations in luminance and gain across angles, the projection coating 32 exhibits smaller fluctuations in luminance and gain across angles. This indicates that the brightness of the projection image formed by the projection coating 32 remains nearly consistent from all viewing angles.

Table 1 Projection coating 32 Projection coating comparison group Brightness (L _v , cd/m ² ) -75° 142.3 178.7 0° 144.8 213.3 75 140.3 178.2 Gain -75° 0.45 0.56 0° 0.45 0.67 75 0.44 0.56 Note: Gain value = π × brightness/illuminance, where illuminance is 1000 lux.

In summary, the spherical curved surface device 1 of the present invention has a wider viewing angle due to the projection coating 32. The brightness of the projection image formed by the projection coating 32 seen by the viewer from various viewing angles is almost uniform and has a stronger sense of three-dimensionality and color saturation. Therefore, the purpose of the present invention can be achieved.

However, the above description is merely an example of the present invention and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made within the scope of the patent application and the contents of the patent specification of the present invention are still within the scope of the present patent.

1: Spherical surface device

2: Support the main body

3: Projection screen

31: Primer layer

32: Projection coating

33: Projection surface

Other features and benefits of the present invention are clearly illustrated in the accompanying drawings, wherein: Figure 1 is a perspective view of an embodiment of the spherical curved surface device of the present invention; Figure 2 is a schematic diagram of the embodiment; Figure 3 is a projection image formed on a projection coating and a control set of projection coatings; and Figure 4 is a luminance analysis result of the projection coating and the control set of projection coatings using a luminometer.

1: Spherical surface device

2: Support the main body

3: Projection screen

31: Primer layer

32: Projection coating

33: Projection surface

Claims (4)

A spherical curved surface device comprises: a supporting body; and a projection screen body, which is arranged on the supporting body and includes a projection coating, wherein the projection coating constitutes a curved projection surface and is formed by a projection paint composition, wherein the projection paint composition comprises a resin component, a pigment component, an additive component and a solvent component, and the pigment component comprises sanding powder with an average particle size ranging from 50 μm to 80 μm; based on the total weight of the projection paint composition being 100 wt%, the resin component comprises 35 wt% to 50 wt% of an acrylic resin and 10 wt% to 25 wt% of a polymer. Urethane resin, the pigment component includes 8wt% to 15wt% of acrylic pigment, 5wt% to 15wt% of rutile titanium dioxide, and 0.1wt% to 5wt% of the texture powder. The additive component includes 1wt% to 3wt% of a UV absorber, 0.5wt% to 1.5wt% of a wetting dispersant, 0.2wt% to 1wt% of a leveling agent, and 2wt% to 4wt% of an anti-settling agent. The total amount of the solvent component is 15wt% to 30wt% and includes ethylene glycol butyl ether, toluene, xylene, phosphomolybdic acid, ethylene glycol butyl ether acetate, and ethyl acetate. The spherical curved surface device according to claim 1, wherein the thickness of the projection coating ranges from 25 μm to 150 μm. The spherical curved surface device according to claim 1, wherein the sanding powder is polymethyl methacrylate-based sanding powder. A projection paint composition comprises: a resin component; a pigment component including a sanding powder having an average particle size ranging from 50 μm to 80 μm; an additive component; and a solvent component. The resin component comprises 35 wt% to 50 wt% of an acrylic resin and 10 wt% to 25 wt% of a polyurethane resin, and the pigment component comprises 8 wt% to 15 wt% of an acrylic pigment, 5 wt% to 15 wt% of a polyurethane resin, and 10 wt% to 25 wt% of a polyurethane resin. t% rutile titanium dioxide and 0.1wt% to 5wt% of the texture powder. The additive component includes 1wt% to 3wt% of a UV absorber, 0.5wt% to 1.5wt% of a wetting dispersant, 0.2wt% to 1wt% of a leveling agent, and 2wt% to 4wt% of an anti-settling agent. The total amount of the solvent component is 15wt% to 30wt% and includes ethylene glycol butyl ether, toluene, xylene, phosphomolybdic acid, ethylene glycol butyl ether acetate, and ethyl acetate.