Backlight and advertising device

Abstract

This utility model relates to the field of light source structure technology, and discloses a backlight source and advertising device, comprising: a housing having a mounting groove; a main light plate mounted on the bottom wall of the mounting groove to emit light into the groove opening; and an edge supplementary lighting component mounted on the inner wall of the mounting groove; the edge supplementary lighting component is used to emit supplementary light rays obliquely outward along the edge of the groove opening. The backlight source and advertising device of this utility model can improve the illumination uniformity of the backlight source.

Description

Technical Field

[0001] This utility model relates to the field of light source structure technology, and in particular to a backlight light source and advertising device. Background Technology

[0002] A backlight is a light source used to provide uniform background illumination, and it is usually located behind the object being inspected or the content being displayed.

[0003] Current backlight sources have more overlapping light in the central area and relatively less light at the edges. As a result, the central area of ​​the light source is generally brighter than the edge area, leading to insufficient uniformity of illumination.

[0004] Therefore, it is necessary to design a backlight source and advertising device to improve the uniformity of backlight illumination.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a backlight source and an advertising device to improve the uniformity of backlight illumination.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A backlight source, comprising:

[0009] The housing has mounting grooves;

[0010] The main light panel is installed on the bottom wall of the mounting groove to emit light into the opening of the mounting groove;

[0011] An edge lighting component is provided, wherein the edge lighting component is installed on the inner wall of the mounting groove; the edge lighting component is used to emit supplementary light rays obliquely outward along the edge of the mounting groove.

[0012] Optionally, the inner wall of the groove is perpendicular to the bottom wall of the groove;

[0013] The edge lighting assembly includes a fill light plate and an arc-shaped diffuser plate; the fill light plate is installed on the inner side wall of the groove, one end of the arc-shaped diffuser plate is attached to the inner side wall of the groove, and the other end extends toward the main light plate and surrounds the fill light plate.

[0014] Optionally, the arc-shaped diffuser plate includes an arc-shaped curved section and a vertically extending section extending toward the main light panel;

[0015] A light-shielding layer is provided on the side of the vertical extension section near the supplementary light panel.

[0016] Optionally, the light-shielding layer is a light-shielding coating.

[0017] Optionally, the light-shielding layer is a light-shielding plate; the light-shielding plate is pasted and installed on the vertical extension section.

[0018] Optionally, a triangular protrusion is provided on the outer end of the inner groove wall near the groove opening;

[0019] The height of the triangular protrusion is not less than the thickness of the fill light plate.

[0020] Optionally, the main lamp board includes a circuit board and an array of lamp beads mounted on the circuit board;

[0021] Along a direction perpendicular to the circuit board, the projection of the circuit board and the projection of the arc-shaped diffuser plate do not coincide.

[0022] Optionally, the triangular protrusion has a supporting surface, and a light-emitting diffuser plate is installed on the supporting surface, the light-emitting diffuser plate shielding the slot.

[0023] Optionally, the housing is integrally formed.

[0024] An advertising device includes a backlight source as described in any of the preceding claims.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The backlight source and advertising device provided by this utility model include a main light panel installed in a mounting groove, which emits light into the groove opening to form a light spot at the target position; an edge supplementary lighting component is installed on the inner wall of the mounting groove, and the edge supplementary lighting component emits supplementary light rays outward at an angle along the edge of the groove opening, thereby compensating for the brightness of the edge area of ​​the light spot formed by the main light panel, so that the brightness of the edge area of ​​the light spot formed by the main light panel is basically consistent with the brightness of the center area, thereby improving the uniformity of illumination.

[0027] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a top view schematic diagram of the backlight source provided in an embodiment of this utility model;

[0030] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the backlight source along line AA.

[0031] Reference numerals: 1. Housing; 101. Triangular protrusion; 11. Mounting groove; 111. Groove bottom wall; 112. Inner groove wall; 2. Main lamp board; 21. Circuit board; 22. Lamp bead; 3. Edge supplementary lighting assembly; 31. Supplementary lighting board; 32. Arc-shaped diffuser plate; 321. Arc-shaped curved section; 322. Vertical extension section; 33. Light-shielding layer; 4. Light-emitting diffuser plate. Detailed Implementation

[0032] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0033] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0034] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0035] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0036] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0037] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0038] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0039] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0040] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0041] Example 1

[0042] In view of the aforementioned defects in existing backlight sources, the applicant, based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a backlight source that can solve the defects in the existing technology and make it more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.

[0043] Please refer to Figures 1 to 2 This utility model embodiment provides a backlight source, including a housing 1, a main lamp board 2, and an edge supplementary lighting component 3.

[0044] The housing 1 provides support and has a mounting groove 11. The main lamp plate 2 is mounted on the bottom wall 111 of the mounting groove 11 to emit light into the opening of the mounting groove 11; Figure 2 As shown, the main light panel 2 emits light vertically upwards. An edge lighting component 3 is installed on the inner wall 112 of the mounting groove 11; the edge lighting component 3 is used to emit supplementary light rays obliquely outwards along the edge of the mounting groove 11.

[0045] In this embodiment, the light emitted by the main light panel 2 can form a main light spot at the target location, which can be the workpiece to be tested or the back of the display area of ​​the billboard. The edge supplementary lighting component 3 emits supplementary light rays obliquely outward along the edge of the mounting groove, thereby compensating for the brightness of the edge area of ​​the main light spot formed by the main light panel 2. The main light spot and the supplementary light spot form the final light spot, making the brightness of the edge area and the center area of ​​the final light spot basically consistent, thus improving the uniformity of illumination. The backlight source of this embodiment can overcome the problem of large brightness difference between the center area and the edge area of ​​the light spot formed by the backlight source in the prior art, and improve the uniformity of illumination of the backlight source.

[0046] It should be further noted that the illumination intensity of the supplementary light spot formed by the edge supplementary lighting component 3 is lower the closer it is to the center of the main light spot formed by the main light panel 2. The edge supplementary lighting component 3 and the main light panel 2 complement each other, thereby improving the uniformity of illumination. It should also be noted that the edge supplementary lighting component 3 can be equipped with different light-emitting components according to actual needs. For example, when inspecting a workpiece, the distance between the workpiece and the main light panel 2 varies, so the light-emitting tilt angle and light intensity of the edge supplementary lighting component 3 need to be adjusted accordingly. Similarly, when illuminating the back of a billboard, the distance between the billboard and the main light panel 2 varies, so the light-emitting tilt angle and light intensity of the edge supplementary lighting component 3 need to be adjusted accordingly.

[0047] Optionally, the inner groove wall 112 is perpendicular to the bottom wall 111 of the groove; the edge supplementary lighting assembly 3 includes a supplementary lighting plate 31 and an arc-shaped diffuser plate 32; the supplementary lighting plate 31 is installed on the inner groove wall 112, one end of the arc-shaped diffuser plate 32 is attached to the inner groove wall 112, and the other end extends towards the main light plate 2 and surrounds the supplementary lighting plate 31. The arc-shaped diffuser plate 32 can soften the light and make the light emitted by the supplementary lighting plate 31 more concentrated on the edge area of ​​the light spot formed by the main light plate 2, and less concentrated on the central area of ​​the light spot formed by the main light plate 2, so that the main light plate 2 and the edge supplementary lighting assembly 3 can better complement each other.

[0048] Optionally, the arc-shaped diffuser plate 32 includes an arc-shaped curved section 321 and a vertical extension section 322 extending toward the main lamp plate 2; a light-shielding layer 33 is provided on the side of the vertical extension section 322 near the supplementary light plate 31. The light-shielding layer 33 can reduce the light shining onto the main lamp plate 2, avoiding interference or further increase in the temperature of the main lamp plate 2.

[0049] Optionally, the light-shielding layer 33 is a light-shielding coating. Generally, the light-shielding coating is a black coating.

[0050] In another specific embodiment, the light-shielding layer 33 is a light-shielding plate; the light-shielding plate is adhered to the vertical extension section 322. The light-shielding plate can be a plastic plate or other opaque flat plate.

[0051] Optionally, a triangular protrusion 101 is provided at the outer end of the inner groove wall 112 near the groove opening; the protrusion height of the triangular protrusion 101 is not less than the thickness of the supplementary lighting plate 31. It should be noted that the triangular protrusion 101 can make the light output of the main light plate 2 more concentrated, and in conjunction with the edge supplementary lighting component 3, can effectively improve the light intensity. Preferably, the cross-section of the triangular protrusion 101 is triangular, and the inclined surface on the triangular protrusion 101 is a diffuse reflection surface.

[0052] Optionally, the main lamp board 2 includes a circuit board 21 and an array of lamp beads 22 mounted on the circuit board 21; along the direction perpendicular to the circuit board 21, the projection of the circuit board 21 and the projection of the arc-shaped diffuser plate 32 do not coincide, so that the arc-shaped diffuser plate 32 does not block the normal light output of the main lamp board 2.

[0053] Optionally, the triangular protrusion 101 forms a supporting surface, with the top surface of the triangular protrusion 101 serving as the supporting surface, and a light-emitting diffuser plate 4 is installed on the supporting surface, which shields the slot opening. The light-emitting diffuser plate 4 fits into the supporting surface, making the installation of the light-emitting diffuser plate 4 simpler and providing more reliable and stable support for the light-emitting diffuser plate 4.

[0054] In this embodiment, the shell 1 is integrally formed.

[0055] Example 2

[0056] This embodiment discloses an advertising device, including a backlight source as described in any one of Embodiment 1. The advertising device also includes a display panel, which may be a canvas with a set pattern. The backlight source is installed on the back side of the canvas and emits light onto the canvas, so that the set pattern on the front of the canvas can be better observed.

[0057] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A backlight source, characterized in that, include: The housing (1) has a mounting groove (11) formed thereon; The main light panel (2) is installed on the bottom wall (111) of the mounting groove (11) to emit light into the opening of the mounting groove (11); Edge lighting component (3): The edge lighting component (3) is installed on the inner groove wall (112) of the mounting groove (11); the edge lighting component (3) is used to emit supplementary light rays obliquely outward along the groove edge of the mounting groove (11).

2. The backlight source according to claim 1, characterized in that, The inner side wall (112) is perpendicular to the bottom wall (111) of the groove; The edge lighting component (3) includes a lighting plate (31) and an arc-shaped diffuser plate (32); the lighting plate (31) is installed on the inner groove wall (112), one end of the arc-shaped diffuser plate (32) is attached to the inner groove wall (112), and the other end extends toward the main light plate (2) and surrounds the lighting plate (31).

3. The backlight source according to claim 2, characterized in that, The arc-shaped diffuser plate (32) includes an arc-shaped curved section (321) and a vertically extending section (322) extending toward the main lamp plate (2); A light-shielding layer (33) is provided on the side of the vertical extension section (322) near the supplementary light plate (31).

4. The backlight source according to claim 3, characterized in that, The light-shielding layer (33) is a light-shielding coating.

5. The backlight source according to claim 3, characterized in that, The light-shielding layer (33) is a light-shielding plate; the light-shielding plate is pasted and installed on the vertical extension section (322).

6. The backlight source according to claim 2, characterized in that, The inner side wall (112) is provided with a triangular protrusion (101) near the outer end of the groove opening; The protrusion height of the triangular protrusion (101) is not less than the thickness of the supplementary light plate (31).

7. The backlight source according to claim 3, characterized in that, The main lamp board (2) includes a circuit board (21) and an array of lamp beads (22) mounted on the circuit board (21); Along a direction perpendicular to the circuit board (21), the projection of the circuit board (21) and the projection of the arc-shaped diffuser plate (32) do not coincide.

8. The backlight source according to claim 6, characterized in that, The triangular protrusion (101) forms a supporting surface, and a light-emitting diffuser plate (4) is installed on the supporting surface, the light-emitting diffuser plate (4) shielding the slot.

9. The backlight source according to claim 1, characterized in that, The shell (1) is integrally formed.

10. An advertising device, characterized in that, It includes a backlight source as described in any one of claims 1 to 9.

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