Lamp bead lead frame module

Abstract

The utility model discloses a lamp bead lead frame module, and particularly relates to the field of lamp bead modules, the lamp bead lead frame module comprises a frame body, a mirror reflection wall and a transparent lamp cup, the mirror reflection wall divides the space in the frame body into at least two compartments, and the transparent lamp cup is fixedly connected to the outer side of the frame body; the LED lamp beads are mounted in the compartments in the frame body; the light diffusion layer covers the top end of the frame body; the filling silica gel is filled in a space between the light diffusion layer and the frame body; the cross section of each lamp groove is in a horn shape, the lamp grooves are connected with one another, and lead frames and LED lamp beads are installed in the lamp grooves; through combination of the assembly accessories, the large-light-emitting-angle lamp beads and the ice-making box type lamp grooves, the height of an inner cavity of the module can be effectively reduced, the dot spacing between the two lamp grooves can be increased, the light mixing area between the lamp beads can be increased, the grade of the uniform light emitting effect and the color contrast of a display screen can be improved, and the height of the inner cavity of the module can be powerfully reduced; and the distance between the lamp beads can be increased, and the number of the LED lamp beads is reduced, so that the benefit of reducing the cost is achieved.

Description

Technical Field

[0001] The utility model relates to the field of lamp bead modules, and more specifically, to a lamp bead lead frame module. Background Art

[0002] In a common lamp bead lead frame, the surfaces available for light reflection are limited, resulting in a limited light range emitted by the lamp beads inside the lead frame. Under the same area, more lamp beads are often required to provide a strong enough illumination range and a good enough illumination effect, leading to a high production cost. Summary of the Utility Model

[0003] To overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a lamp bead lead frame module. The technical problem to be solved by the utility model is that the existing lead frame requires a larger number of lamp beads per unit area, resulting in a high production cost.

[0004] To achieve the above object, the utility model provides the following technical solution: A lamp bead lead frame module includes a lead frame, which includes a frame body, a mirror reflection wall, and a transparent lamp cup. The mirror reflection wall divides the space inside the frame body into at least two compartments. A transparent lamp cup is fixedly connected to the outside of the frame body; it can effectively increase the light-emitting radius around the lamp beads by more than double that of traditional lamp beads. LED lamp beads are installed in the compartments inside the frame body; a light diffusion layer covers the top of the frame body; filling silica gel is filled in the space between the light diffusion layer and the frame body; a lamp slot, the cross-sectional shape of which is trumpet-shaped, and several lamp slots are connected to each other. A lead frame and LED lamp beads are installed in the lamp slot; component accessories include a PCB board, a metal backplane, a light divergence board, and a three-in-one optical film. The PCB board is fixed to the bottom of the lamp slot, the metal backplane is fixed to the bottom of the PCB board, the light divergence board is fixed to the top of the lamp slot, and the three-in-one optical film is fixed to the upper part of the light divergence board.

[0005] In a preferred embodiment, the distance range between the upper surface of the PCB board and the lower surface of the light divergence board is 4 mm - 6 mm.

[0006] In a preferred embodiment, the point distance range between two lamp slots is 19 mm - 21 mm.

[0007] In a preferred embodiment, the surface of the mirror reflection wall facing the LED lamp beads is an inclined surface, and the surface of the transparent lamp cup facing the LED lamp beads is an inclined surface. The mirror reflection wall and the transparent lamp cup form a trumpet-shaped opening, and the large mouth of the trumpet faces the light-emitting direction of the LED lamp beads.

[0008] In a preferred embodiment, the inclination angle range of the surface of the mirror reflection wall facing the LED lamp beads is 90.5° - 96°.

[0009] In a preferred embodiment, the light diffusion layer is a titanium dioxide layer.

[0010] In a preferred embodiment, the silicone that can be filled is uniformly mixed with phosphor powder to excite the blue light emitted by the chip into white light.

[0011] In a preferred embodiment, a plurality of lamp slots are arranged in an array square matrix.

[0012] In a preferred embodiment, the cross-sectional shape of the lamp slot is a flared shape, and the large mouth of the lamp slot is in the same direction as the light-emitting port of the LED lamp bead.

[0013] In a preferred embodiment, the light diverging plate is a diffusion plate or a beam splitter plate.

[0014] Technical effects and advantages of the present utility model:

[0015] The combination of the large light-emitting angle lamp beads and the ice-making box type lamp slots can effectively reduce the height of the inner cavity of the module and increase the pitch between two lamp slots, which can increase the light mixing area between the lamp beads and improve the taste of the light-emitting uniformity effect, effectively reducing the height of the inner cavity of the module; it can also increase the distance between the lamp beads, reduce the number of LED lamp beads, so as to achieve the benefit of cost reduction. The ice-making box type lamp slot design utilizes the principle of physical processing and is formed without changing the material properties of the original reflector, so it will not change the reflectivity of the original material and can meet the reliability test of the original module. Description of the drawings

[0016] The drawings are used to provide a further understanding of the technical solution of the present utility model, and constitute a part of the present utility model. The embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0017] Figure 1 It is the internal structure diagram of the lead frame in the present utility model.

[0018] Figure 2 It is the light reflection diagram of the lead frame in the present utility model.

[0019] Figure 3 It is the lamp slot structure in the present utility model.

[0020] Figure 4 It is the module structure diagram in the present utility model.

[0021] Figure 5 It is the arrangement structure diagram of a plurality of lamp slots in the present utility model.

[0022] Figure 6 It is the height schematic diagram of the inner cavity of the module in the present utility model.

[0023] The reference numerals in the drawings are: 1, lead frame; 11, frame body; 12, mirror reflection wall; 13, transparent lamp cup; 2, LED lamp beads; 3, light diffusion layer; 4, filled silica gel; 5, lamp slot; 51, slot body; 52, mounting hole; 6, component fittings; 61, PCB board; 62, metal backplane; 63, light divergence board; 64, triple optical film. Detailed implementation manners

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

[0025] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the example embodiments of the present disclosure. However, those skilled in the art will realize that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, components, steps, etc. can be adopted. In other cases, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0026] The present utility model provides a lamp bead lead frame module as shown in Figure 1 - Figure 6 which includes a lead frame 1. An LED lamp bead 2 is installed inside the lead frame 1. A light diffusion layer 3 is covered on the lead frame 1. The light diffusion layer 3 has the function of depressing and evenly distributing the central light emitted by the LED lamp bead 2 and optimizing and increasing the surrounding halo effect. Each lead frame 1 is placed in a corresponding lamp slot 5. The light emitted by the lead frame 1 is further expanded in the illumination angle through the reflection of the lamp slot 5. Several lamp slots 5 with lead frames 1 are assembled together. Under the same illumination area, the number of applied LED lamp beads 2 can be effectively reduced.

[0027] Specifically, the lead frame 1 includes a frame body 11, a mirror reflection wall 12, and a transparent lamp cup 13. The mirror reflection wall 12 protrudes inside the lead frame 1, so that the space inside the frame body 11 is separated into two spaces by the mirror reflection wall 12. An LED lamp bead 2 is arranged in each space. The LED lamp bead 2 is installed in the frame body 11. A transparent lamp cup 13 is fixedly connected to the outer peripheral side of the frame body 11. The surface of the mirror reflection wall 12 can obtain the ability to mirror-reflect light by means such as coating a coating.

[0028] In the above structure, the specular reflection wall 12 mainly functions as a specular reflector, reflecting the light emitted by the LED lamp beads 2 to the outer peripheral side and the upper side of the lead frame 1 to expand the illumination range of the LED lamp beads 2. When designing, the deflection angle of the side of the specular reflection wall 12 facing the LED lamp beads 2 is in the range of 90.5° - 96°.

[0029] The space inside the frame body 11 can be filled with a filling silica gel 4 uniformly mixed with phosphor. The filling silica gel 4 covers the upper part of the LED lamp beads 2. The purpose of the phosphor is to excite the blue light emitted by the chip into white light. In addition to using the fluorescent agent method, a quantum dot film can also be attached to the top surface of the three-in-one optical film 64 to achieve the effect of converting light from blue to white.

[0030] In addition, the transparent lamp cup 13 is made of a light-transmitting material. Combined with the light reflection function of the specular reflection wall 12, it can effectively expand the light-emitting range of the LED lamp beads 2. The specific angles of the two side edges of the transparent lamp cup 13 can be selected to be in an inclined state. Preferably, the large mouth of the transparent lamp cup 13 faces upward, its inner side is inclined, and its outer side is vertical, so that the light can be better diffused toward the outside.

[0031] The lamp slot 5 includes a slot body 51 and a mounting hole 52. The slot body 51 includes a bottom plate and a reflecting plate. The mounting hole 52 is opened on the bottom plate for placing the lead frame 1, and the reflecting plate is inclined and fixedly connected to the peripheral side of the bottom plate. The shape of the reflecting plate can be selected as a multi-sided polygon or an arc, and after combination, it forms a horn shape, and the large mouth of the horn shape is arranged in the same direction as the light outlet of the lead frame 1.

[0032] Preferably, the shape of the reflecting plate is an isosceles trapezoid. The four reflecting plates and the bottom plate form an inverted hollow frustum of a pyramid, and the lead frame 1 is placed inside the frustum of the pyramid.

[0033] The reflecting plates of different lamp slots 5 are fixedly connected to each other and assembled and used in an array form.

[0034] The lamp slot 5 with a lead frame 1 arranged inside in an array shape is connected to the component fittings 6 to form a module.

[0035] Specifically, the component fittings 6 include a PCB board 61, a metal backplane 62, a light diverging plate 63, and a three-in-one optical film 64. The bottom plate of the slot body 51 is fixedly connected to the PCB board 61, the lower end surface of the PCB board 61 is fixedly connected to the metal backplane 62, the top of the slot body 51 is fixedly connected to the light diverging plate 63, and the top of the light diverging plate 63 is fixedly connected to the three-in-one optical film 64.

[0036] The three-in-one optical film 64 includes two side prism lens layers and one diffusion layer to reflect as much light as possible to the outside world. Since the three-in-one optical film 64 is a prior art, it will not be elaborated here in this application.

[0037] Next, the specific usage effects of this application will be illustrated by examples: Figure 6 Here, h refers to the distance between the upper surface of the PCB board and the lower surface of the light diverging board, that is, the height of the module inner cavity.

[0038] Example 1:

[0039] For a 15.6-inch module of a certain system factory, the height of its module inner cavity is 5 mm, the pitch between lamp beads is 7.5 mm, and 1,470 lamp beads are required to ensure a certain light intensity.

[0040] In this application, the height of the module inner cavity is 5 mm, the pitch between two lamp slots 5 is 20 mm, the number of single-board lamp slot 5 array groups is 6 * 5, and a total of 6 boards are required. Therefore, the total number of lamp slots 5 is 180, and the number of LED lamp beads 2 is 360. Compared with the prior art, while ensuring the light intensity, the use of LED lamp beads 2 is saved, the economic cost is reduced, and the benefit is nearly 75%, effectively reducing the economic cost and energy consumption.

[0041] Example 2:

[0042] For a 55-inch CELL of a certain system factory, with specific dimensions of 1240 mm * 730 mm 16:9, the height of the module inner cavity is 5 mm, the pitch between lamp beads is 7.5 mm, and 16,005 lamp beads are required to ensure a certain light intensity.

[0043] In this application, the height of the module inner cavity is 5 mm, the pitch between two lamp slots 5 is 20.6 mm, the number of single-board lamp slot 5 array groups is 15 * 9, and a total of 16 boards are required. Therefore, the total number of lamp slots 5 is 2160, and the number of LED lamp beads 2 is 4320. Compared with the prior art, while ensuring the light intensity, the use of LED lamp beads 2 is saved, the economic cost is reduced, and the benefit is nearly 73%, effectively reducing the economic cost and energy consumption.

[0044] In summary, the combination of large light-emitting angle lamp beads and ice-making box type lamp slots can effectively reduce the height of the module inner cavity and increase the pitch between two lamp slots 5. As shown in the previous data, the best achievable dimensions after this combination can be: the height of the module inner cavity is 4 mm - 6 mm, the pitch between two lamp slots 5 is 19 mm - 21 mm. The ice-making box type lamp slot design is formed by using the physical processing principle without changing the material properties of the original reflector, so it will not change the reflectivity of the original material and can meet the reliability test of the original module.

[0045] The preparation process of the lamp slot 5 is supplemented here:

[0046] S1: Take a PET sheet and coat a layer of reflector material, i.e., reflective material, on the sheet. The sheet after spraying is defined as the reflective sheet.

[0047] S2: Place the reflective sheet on a stamping machine to remove the excess part of the reflective sheet, leaving space for subsequent folding.

[0048] S3: Take another mold, which includes an upper forming plate and a lower forming plate. Place the reflective sheet obtained in the process of S2 between the lower forming plate and the upper forming plate. Use the hydraulic system to drive the lower forming plate and the upper forming plate to close the mold, and press the reflective sheet into the shape of a lamp slot according to the inner cavity shapes of the lower forming plate and the upper forming plate.

[0049] The reflector on the bottom plate will be bent at a certain angle under the forming action of the mold. At this time, drip glue between two adjacent reflectors to fix the shape of the lamp slot 5.

[0050] The lamp slot 5 is processed by cold working method. The so-called cold working means punching and bending the reflective sheet at room temperature. The existing methods for processing lamp slots, whether injection molding or thermoforming, are all hot working methods. The hot working method is common but there is an undeniable influence. That is, after hot working and stretch forming, there is always a certain residual stress in the workpiece. This residual stress will always make the lamp slot 5 have a tendency of deformation reset. As the service life of the lamp slot becomes longer, the influence of deformation reset caused by this residual stress becomes stronger, resulting in the deformation of the lamp slot and affecting the light output effect. In contrast, there is no such residual stress in cold working.

[0051] Finally: The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A lamp bead lead frame module, characterized in that Comprising: A lead frame (1), including a frame body (11), a mirror reflection wall (12) and a transparent lamp cup (13). The mirror reflection wall (12) divides the space inside the frame body (11) into at least two compartments, and the transparent lamp cup (13) is fixedly connected to the outside of the frame body (11); LED lamp beads (2), installed in the compartments inside the frame body (11); A light diffusion layer (3), covering the top of the frame body (11); Filling silicone (4), filling the space between the light diffusion layer (3) and the frame body (11); A lamp slot (5), with a horn-shaped cross-section. A number of lamp slots (5) are connected to each other, and the lead frame (1) and the LED lamp beads (2) are installed in the lamp slot (5); Component fittings (6), including a PCB board (61), a metal backplane (62), a light divergence board (63) and a triple-layer optical film (64). The PCB board (61) is fixed to the bottom of the lamp slot (5), the metal backplane (62) is fixed to the bottom of the PCB board (61), the light divergence board (63) is fixed to the top of the lamp slot (5), and the triple-layer optical film (64) is fixed to the upper part of the light divergence board (63).

2. The light-emitting diode lead frame module according to claim 1, wherein: The distance range between the upper surface of the PCB board (61) and the lower surface of the light divergence board (63) is 4 mm - 6 mm.

3. The light-emitting diode lead frame module according to claim 1, wherein: The point distance range between two said lamp slots (5) is 19 mm - 21 mm.

4. The lamp bead lead frame module according to claim 1, wherein: The surface of the mirror reflection wall (12) facing the LED lamp beads (2) is an inclined surface, and the surface of the transparent lamp cup (13) facing the LED lamp beads (2) is an inclined surface. The mirror reflection wall (12) and the transparent lamp cup (13) form a horn-shaped opening, and the large opening of the horn faces the light-emitting direction of the LED lamp beads (2).

5. The lamp bead lead frame module according to claim 4, characterized in that: The inclination angle range of the surface of the mirror reflection wall (12) facing the LED lamp beads (2) is 90.5° - 96°.

6. The lamp bead lead frame module according to claim 1, wherein: The light diffusion layer (3) is a titanium dioxide layer.

7. The light-emitting diode lead frame module according to claim 1, wherein: A number of said lamp slots (5) are arranged in an array square matrix.

8. The light-emitting diode lead frame module according to claim 1, wherein: The cross-section of the lamp slot (5) is horn-shaped, and the large opening of the lamp slot (5) is in the same direction as the light-emitting port of the LED lamp beads (2).

9. The lead frame module for a lamp bead according to claim 1, wherein: The light divergence board (63) is a diffusion board or a beam splitting board.

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