Uniform light guide lighting display device

Abstract

The present invention discloses a uniform light guide light display device, comprising a light guide cover, a plurality of light guide plates and a plurality of light sources, wherein the light guide plates are arranged in parallel in the light guide cover, the light entrance side of the light guide plates is arranged in the light guide cover, the light exit side of the light guide plates is arranged outside the light guide cover, the light entrance side of the light guide plates is a cavity with an opening at one end, and the light sources are arranged at the opening of each light guide plate cavity. The present invention has the advantages of uniform light guide, no light leakage in adjacent areas, and high light intensity.

Description

Technical Field

[0001] The invention relates to a light display device, in particular to a uniform light guiding light display device. Background Art

[0002] Some electronic faucets currently on the market are equipped with indicator lights to indicate the water temperature or remind the water purification device that the filter needs to be replaced. These indicator lights directly illuminate the display area on the faucet housing to achieve lighting display.

[0003] A Chinese patent application with application number CN201520130798.1 discloses a water temperature controller for a water heater, including a faucet. A circuit control module is arranged in the end cover of the faucet. The circuit control module includes a single-chip microcomputer, a lock LED (light-emitting diode) indicator light, an overload LED indicator light, a first temperature display LED digital tube and a second temperature display LED digital tube. The lock LED indicator light, the overload LED indicator light, the first temperature display LED digital tube and the second temperature display LED digital tube are respectively connected to the single-chip microcomputer, and the single-chip microcomputer controls the above-mentioned lights to be displayed on the surface of the upper end cover of the faucet.

[0004] Since the light emitted by the LED lamp is a point light, the point light is unevenly irradiated on the display area on the upper surface of the end cover, and the display area will appear bright in the center and dim at the edges, resulting in a poor display effect. On the other hand, light bleeding will occur in adjacent display areas. For example, when the locking LED light is on, the display area at the corresponding position will have light display, and the adjacent display area, that is, the display area corresponding to the overload LED light, will also transmit a part of the scattered light of the locking LED light, affecting the user's judgment of the light indication. Summary of the invention

[0005] In order to solve the above technical problems, the object of the present invention is to provide a uniform light-guiding light display device, which can achieve uniform light guidance in the display area and prevent light from spilling over between adjacent display areas.

[0006] The present invention is achieved through the following technical scheme: a uniform light guide light display device, including a light guide cover, multiple light guide plates and multiple light sources, the light guide plates are arranged in parallel in the light guide cover, the light entrance side of the light guide plate is arranged in the light guide cover, the light exit side of the light guide plate is arranged outside the light guide cover, the light entrance side of the light guide plate is a cavity with an opening at one end, and the light sources are respectively arranged at the opening of each light guide plate cavity.

[0007] Among them, the light incident side of the light guide plate includes a first light incident surface, a second light incident surface, a third light incident surface, a fourth light incident surface and a fifth light incident surface, the third light incident surface is inclined relative to the first light incident surface, the distance between the third light incident surface and the first light incident surface gradually increases toward the opening direction of the cavity, the fourth light incident surface is parallel to the fifth light incident surface, the second light incident surface connects the first light incident surface, the third light incident surface, the fourth light incident surface and the fifth light incident surface, and the light source is opposite to the second light incident surface.

[0008] A plurality of partitions are arranged in the light guide cover, and a light guide plate and a light source are respectively arranged between adjacent partitions.

[0009] The back sides of the first light incident surface, the second light incident surface and the third light incident surface of the light guide plate are respectively attached to the inner wall of the light guide cover, and the back sides of the fourth light incident surface and the fifth light incident surface are respectively attached to the inner wall of the partition.

[0010] The light guide plate is integrally formed using a transparent material.

[0011] Optionally, the back side of the light incident surface of the light incident side of the light guide plate is painted or electroplated to be white, or a white plastic part is added to the back side of the light incident surface.

[0012] The light source is arranged on a PCB (printed circuit board), and the PCB is fixed in the light guide cover.

[0013] The light source is a diode light source.

[0014] A uniform light-guiding lighting display device of the present invention has the following beneficial effects: uniform light-guiding of the lighting display device is achieved by adding a light guide plate; light crosstalk between adjacent areas is avoided by designing the light guide plate and the light guide cover partition; and incident and outgoing light intensities are increased by designing multiple light-entry surfaces of the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural exploded diagram of a uniform light-guiding light display device of the present invention;

[0017] Figure 2 It is a structural exploded view of another angle of a uniform light-guiding light display device of the present invention;

[0018] Figure 3It is a structural diagram of a uniform light-guiding light display device of the present invention;

[0019] Figure 4 It is a side cross-sectional view of a uniform light-guiding light display device of the present invention;

[0020] Among them, the corresponding marks in the drawings are:

[0021] 1-light guide cover 11-partition plate 12-fixed part

[0022] 2-light guide plate 21-first light incident surface 22-second light incident surface

[0023] 23- third light incident surface 24- fourth light incident surface 25- fifth light incident surface

[0024] 26-light output side 3-light source 31-red diode light source

[0025] 32- white diode light source 33- blue diode light source 4- PCB board

[0026] 41-Fixing hole DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Reference Manual Attached Figure 1 To Attachment Figure 4 , is a uniform light guide light display device of the present invention, comprising a light guide cover 1, three light guide plates 2 and three light sources 3, four partitions 11 are arranged in the light guide cover 1, a light guide plate 2 is arranged between adjacent partitions 11, the light entrance side of the light guide plate 2 is arranged in the light guide cover 1, and the light exit side of the light guide plate 2 is arranged outside the light guide cover 1;

[0029] A first light incident surface 21, a second light incident surface 22, a third light incident surface 23, a fourth light incident surface 24 and a fifth light incident surface 25 are provided on the light incident side of the light guide plate 2, and the five light incident surfaces form a cavity with an opening at one end, wherein the third light incident surface 23 is arranged obliquely relative to the first light incident surface 21, and the distance between the third light incident surface 23 and the first light incident surface 21 gradually increases toward the opening direction of the cavity, the fourth light incident surface 24 is arranged parallel to the fifth light incident surface 25, the second light incident surface 22 connects the first light incident surface 21, the third light incident surface 23, the fourth light incident surface 24 and the fifth light incident surface 25, the back surfaces of the first light incident surface 21, the second light incident surface 22 and the third light incident surface 23 are respectively fitted with the inner wall of the light guide cover 1, and the back surfaces of the fourth light incident surface 24 and the fifth light incident surface 25 are respectively fitted with the inner wall of the partition 11;

[0030] The light guide plate 2 is integrally injection molded using a transparent PE (polyethylene) material, and the back side of the light-incoming side of the light guide plate 2 is processed into white by a surface treatment method such as spray painting or electroplating;

[0031] A fixing hole 41 is provided at each end of the PCB board 4, and three light sources 3 are arranged between the fixing holes 41 at both ends at equal intervals. The three light sources 3 are respectively a red diode light source 31, a white diode light source 32 and a blue diode light source 33. A fixing part 12 is provided at a corresponding position in the light guide cover 1. The PCB board 4 is fixed to the fixing part of the light guide cover 1 by means of bolts through the fixing holes 41. The three light sources 3 on the PCB board 4 are respectively located at the openings of the cavity surrounded by the light incident surfaces of the three light guide plates 2.

[0032] When the light display device is installed, the light emitting side 26 of the light guide plate 2 corresponding to the red diode light source 31 corresponds to the first display area, the light emitting side 26 of the light guide plate 2 corresponding to the white diode light source 32 corresponds to the second display area, and the light emitting side 26 of the light guide plate 2 corresponding to the blue diode light source 33 corresponds to the third display area.

[0033] Accordingly, after power is turned on, the light display device can accept three different control signals, and emit red, white and blue light respectively according to the three different control signals. When the light display device accepts the first control signal, the red diode light source 31 emits red light, the white diode light source 32 and the blue diode light source 33 do not emit light, and the red light is respectively incident on the first light incident surface 21, the second light incident surface 22, the third light incident surface 23, the fourth light incident surface 24 and the fifth light incident surface 25 of the light guide plate 2 in the corresponding partition 11.

[0034] Most of the light incident on the first light incident surface 21, the second light incident surface 22, the third light incident surface 23, the fourth light incident surface 24 and the fifth light incident surface 25 enters the interior of the light guide plate 2. Since the back side of the light incident surface is treated to be white, the light is reflected back into the light guide plate 2. Part of the light continues to be reflected inside the light guide plate 2, and the other part of the light is emitted from the surface of the light incident surface. The outgoing light at certain angles of the first light incident surface 21, the second light incident surface 22, the fourth light incident surface 24 and the fifth light incident surface 25 will be incident on the third light incident surface 23, thereby increasing the incident light intensity of the third light incident surface 23.

[0035] The red light entering the light guide plate 2 from the third light incident surface 23 is continuously reflected inside the light guide plate 2 and finally emits red light from the light emitting side 26 of the light emitting side of the light guide plate 2, and the first display area uniformly displays red.

[0036] When the light display receives the second control signal, the red diode light source 31 and the blue diode light source 33 do not emit light, and the white diode light source 32 emits light. Similarly, the light emitting side 26 of the corresponding light guide plate 2 emits white light, and the second display area uniformly displays white.

[0037] When the light display receives the third control signal, the red diode light source 31 and the white diode light source 32 do not emit light, and the blue diode light source 33 emits light. Similarly, the light emitting side 26 of the corresponding light guide plate 2 emits blue light, and the third display area uniformly displays blue.

[0038] Since the three light sources 3 are respectively arranged at the openings of the corresponding light guide plate 2 cavities, and the three light guide plates 2 are arranged between the partitions 11 of the light guide cover 1, when a certain display area emits light of a certain color, such as when the first area emits red light, no scattered red light will appear in the adjacent second display area, thereby avoiding the light crosstalk phenomenon between adjacent areas.

[0039] It should be noted that the red diode light source 31 , the white diode light source 32 and the blue diode light source 33 may also be replaced by diode light sources of other colors.

[0040] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A uniform light guide light display device, comprising a light guide cover (1), a plurality of light guide plates (2) and a plurality of light sources (3), wherein the light guide plates (2) are arranged in parallel in the light guide cover (1), the light entrance side of the light guide plates (2) is arranged in the light guide cover (1), and the light exit side (26) of the light guide plates (2) is arranged outside the light guide cover (1), characterized in that: The light incident side of the light guide plate (2) is a cavity with an opening at one end, and the light source (3) is respectively arranged at the opening of the cavity of each light guide plate (2); The light incident side of the light guide plate (2) comprises a first light incident surface (21), a second light incident surface (22), a third light incident surface (23), a fourth light incident surface (24) and a fifth light incident surface (25); the third light incident surface (23) is arranged obliquely relative to the first light incident surface (21); the distance between the third light incident surface (23) and the first light incident surface (21) gradually increases toward the opening direction of the cavity; the fourth light incident surface (24) is arranged parallel to the fifth light incident surface (25); the second light incident surface (22) connects the first light incident surface (21), the third light incident surface (23), the fourth light incident surface (24) and the fifth light incident surface (25); and the light source (3) is opposite to the second light incident surface (22); The back surfaces of the first light incident surface (21), the second light incident surface (22) and the third light incident surface (23) of the light guide plate (2) are respectively fitted with the inner wall of the light guide cover (1); the back surfaces of the fourth light incident surface (24) and the fifth light incident surface (25) are respectively fitted with the inner wall of the partition (11); and the light exit side (26) is directly connected to the third light incident surface (23).

2. A uniform light guide light display device according to claim 1, characterized in that: A plurality of partitions (11) are arranged in the light guide cover (1), and a light guide plate (2) and a light source (3) are respectively arranged between adjacent partitions (11).

3. A uniform light guide light display device according to claim 1, characterized in that: The light guide plate (2) is integrally formed using a transparent material.

4. A uniform light guide light display device according to claim 3, characterized in that: The back side of the light incident surface of the light guide plate (2) is processed to be white.

5. A uniform light guide light display device according to claim 4, characterized in that: The light source (3) is arranged on a PCB board (4), and the PCB board (4) is fixed in the light guide cover (1).

6. A uniform light guide light display device according to claim 5, characterized in that: The light source (3) is a diode light source.

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