Backlight plate shell and backlight plate

Abstract

The technical scheme belongs to the technical field of backlight plates, and particularly relates to a backlight plate shell and a backlight plate, the backlight plate shell comprises a plate shell, one side end face of the plate shell is concavely provided with a mounting groove, the plate shell is provided with a fixed mounting part, the inner side of the fixed mounting part is provided with a fixed mounting groove for clamping a lamp bead, and the edge of the plate shell is provided with a wire passing groove. The wire passing groove extends from the edge of the plate shell to the groove bottom of the mounting groove and is recessed, the wire passing groove communicates the fixed mounting groove to the outside of the plate shell, limiting parts are arranged on the opposite side walls of the wire passing groove along the groove opening position, the distance between the limiting parts on the two sides is smaller than the width of the lamp bead, and the limiting parts are in interference fit with the lamp bead. Therefore, the lamp beads are prevented from being separated from the fixed mounting grooves from the wire passing grooves, the mounting stability of the lamp beads is better, the requirement for the mounting precision of the lamp beads is lowered, the assembling difficulty is lowered, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The technical scheme relates to the technical field of backlight panels, in particular to a backlight panel shell and a backlight panel. BACKGROUND

[0002] A backlight panel is a core light-emitting component of a liquid crystal display (LCD), which is usually composed of a light guide plate, a reflective film, a diffusion film and a light source. The backlight panel converts a point / line light source into a uniform area light source to ensure the uniformity of screen brightness and color presentation, and has high light transmittance and heat resistance.

[0003] For example, Chinese Patent CN205750215U discloses a backlight panel. The entire base is formed with a mounting groove through a side plate, a first folding plate, a second folding plate and a third folding plate. The second folding plate is connected with a clamping plate, the clamping plate is provided with a first protrusion and a second protrusion on both sides, the light guide plate is provided with an "L-shaped" clamping groove, and the light guide plate can be clamped and connected on the base through the two protrusions on both sides of the front part. The light-emitting diode is connected with the light guide plate through a connecting groove on the second folding plate. In the assembly process of the existing backlight panel material, the pin line of the LED lamp bead needs to be accurately inserted into the mounting hole (pin insertion) on the front side of the panel shell. The alignment accuracy requirement is high and the working hours are easy to be wasted. Secondly, the L-shaped clamping groove on the front side of the light guide plate needs to be inserted at a specific angle with the first protrusion and the second protrusion to realize the embedded fitting installation. The existing automatic equipment is difficult to meet the accuracy requirement, and the equipment needs to be integrated with a high-resolution visual positioning system and a self-adaptive compensation mechanism, which significantly increases the mechanical complexity and manufacturing cost.

[0004] The process relies on the fine operation of manual work to solve the positioning and embedded fitting installation of the lamp bead. In mass production, only manual operation is used for continuous operation, which is easy to cause assembly deviation due to fatigue, and the cycle of single assembly is long and the production efficiency is low, which needs to be improved. SUMMARY

[0005] The technical scheme is provided to improve the problem that the traditional backlight panel assembly relies on manual operation and has low production efficiency.

[0006] The purpose of the technical scheme is achieved as follows.

[0007] A backlight panel shell includes a panel shell. One side end surface of the panel shell is recessed to form a mounting groove. The panel shell is provided with a positioning part. The inner side of the positioning part has a positioning groove for clamping a lamp bead. The edge of the panel shell is provided with a wire passing groove. The wire passing groove is recessed from the edge of the panel shell to the bottom of the mounting groove, and the wire passing groove is connected to the outside of the panel shell. Limiting parts are arranged on the opposite side walls of the wire passing groove along the groove opening position.

[0008] According to the technical scheme, when the backlight panel shell is normally used, the lamp bead is assembled from the top of one side of the installation groove and is clamped into the corresponding fixed installation groove of the panel shell to limit the swing of the lamp bead in the groove, the lamp bead pin is correspondingly led out of the panel shell through the wire groove to be used for power supply, the distance between the two side limiting parts is less than the width of the lamp bead, the limiting part is in interference fit with the lamp bead, and then the interference fit restricts the lamp bead from separating from the fixed installation groove through the wire groove, so that the stability of the lamp bead installation is better, the precision requirement of the lamp bead installation is reduced, the assembly difficulty is reduced, and the production efficiency is improved.

[0009] Preferably, the bottom of the installation groove is further provided with a limiting groove, and the fixed installation part is arranged on the left and right sides of the groove edge of the limiting groove.

[0010] According to the technical scheme, the fixed installation groove formed by the two parts of the fixed installation part provides bilateral clamping positioning for the lamp bead, the bottom of the lamp bead is further embedded in the limiting groove during assembly, the embedding and fitting depth in the vertical direction is improved, and the assembly stability is further improved.

[0011] Preferably, the end of the fixed installation part opposite to the wire groove through hole is provided with a light transmission hole, and the height value of the fixed installation part protruding relative to the bottom of the installation groove is 0.8mm-1.6mm.

[0012] According to the technical scheme, the height value of the fixed installation part is limited within a certain range, on the basis of ensuring stable positioning, interference with the shell cover in subsequent assembly is avoided, the light transmission hole is arranged opposite to the wire groove through hole, the light emitting surface of the lamp bead is opposite to the light transmission hole, the light is ensured to be output without shielding, and the light transmittance is improved.

[0013] Preferably, the fixed installation part is provided with a guide surface, and the inclination directions of the guide surfaces on the two sides are opposite, so that the groove edge of the upper end of the fixed installation groove is arranged in an expanding structure away from the limiting groove.

[0014] According to the technical scheme, when the lamp bead is assembled by being pressed downward, the expanding structure of the guide surface forms an initial guide channel of the fixed installation groove, the opposite inclined surfaces on the two sides automatically converge the downward displacement of the lamp bead, so that the lamp bead slides into the fixed installation groove along the expanding central axis, and the vertical angle is corrected synchronously with the avoiding surface of the bottom limiting groove, the positioning accuracy of the assembly is further improved, and the production efficiency is further improved.

[0015] Preferably, the inner side wall of the fixed installation groove is an inclined side wall, and the inclination direction of the inclined side wall is such that the groove width of the fixed installation groove is arranged in a contracting structure away from the opening end.

[0016] According to the technical scheme, the inclined side wall generates a radial convergence force through the gradually tapered groove width, limits the movement of the lamp bead away from the wire groove, and the contracting structure makes the lamp bead further realize self-locking positioning, and further improves the assembly stability.

[0017] Preferably, the positioning groove has a special-shaped profile.

[0018] Through the above technical solution, the shape of the lamp bead is matched with the irregular special-shaped profile, the differential constraint surface of the irregular cavity cooperates with the positioning part during assembly, further reducing the degree of freedom deviation after assembly, and improving the stability.

[0019] Preferably, the limiting groove wall has a relief surface, and the inclination direction of the relief surface is inclined downward toward the groove bottom of the limiting groove.

[0020] Through the above technical solution, the bottom of the front end of the lamp bead contacts the relief surface during assembly, avoiding the contact of the side edge of the mounting groove bottom, and the non-contact design reduces the wear of the bottom of the lamp bead.

[0021] Preferably, the side panel of the plate shell away from the mounting groove protrudes a convex point.

[0022] Through the above technical solution, the convex point protrudes from the other side panel of the plate shell away from the mounting groove. When it is necessary to transport the plate shell for feeding, the plate shell is placed on the conveying track, the conveying track is inclined, and the plate shell is hung on the conveying track for conveying by the convex point abutting against the side edge of the inclined conveying track. It is suitable for the feeding link in automatic assembly, and further improves the adaptability to production automation.

[0023] Preferably, a backlight panel comprises a light guide cover, and further comprises the backlight panel shell of any one of the preceding claims. The light guide cover is provided with a relief groove at a position corresponding to the positioning groove. The opposite side walls in the mounting groove protrude a clamping part. The light guide cover is clamped between the clamping parts on both sides, so that the light guide cover is embedded in the mounting groove for positioning. The relief groove and the positioning groove are combined to form a cavity for defining the positioning of the lamp bead.

[0024] Through the above technical solution, the width of the light guide cover is smaller than the distance between the two clamping parts protruding from the opposite side walls in the mounting groove, so that the light guide cover is squeezed through the two clamping parts. The clamping parts form a symmetrical surface contact pressing force on both sides. The relief groove and the positioning groove of the plate shell are accurately combined to form a cavity. The lamp bead is completely wrapped in the cavity for constraint positioning. The lamp bead light axis can be aligned with the side wall of the relief groove to facilitate light transmission.

[0025] Preferably, a solder part is further arranged between the plate shell and the light guide cover, which is distributed on the opposite sides of the positioning part for ultrasonic welding melting to bond the plate shell and the light guide cover.

[0026] A surplus protrusion is further protruded between the plate shell and the light guide cover.

[0027] Through the above technical solution, the solder between the shell and the light guide cover is melted by ultrasonic welding during welding, thereby achieving the fixed installation of the shell and the light guide cover; the excess protrusion forms a heat conduction buffer structure through local contact, which disperses and conducts the heat generated by welding the solder along the protrusion, reduces the heat accumulation in the main body area of ​​the shell, and prevents the shell and the light guide cover from sticking together due to heat, thus ensuring light transmittance.

[0028] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0029] 1. This technical solution has a mounting part on the shell, which has a mounting groove that communicates with the wire guide groove. When the lamp bead is pushed in, radial positioning and lead wire orientation are completed. The interference fit between the limiting part and the lamp bead forms a resistance constraint to prevent it from leaving the mounting groove after passing through the wire guide groove. This results in better stability, reduces assembly difficulty, and improves production efficiency.

[0030] 2. This technical solution provides a limiting groove at the bottom of the mounting groove. The wall of the limiting groove has a relief surface. The inclined direction of the relief surface is downward towards the bottom of the limiting groove. The guide surface guides the lamp bead to automatically slide into the bottom of the limiting groove at a predetermined angle, so that the horizontal offset is automatically corrected during the sinking process of the lamp bead, reducing assembly deviation, improving assembly yield, and further reducing assembly difficulty.

[0031] 3. In this technical solution, the mounting part has a guide surface, and the inclination direction of the two guide surfaces is opposite, so that the upper end of the mounting groove faces outward and is flared, guiding the lamp bead to be initially embedded in the mounting groove. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0033] Figure 2 This embodiment Figure 1 Another perspective illustration;

[0034] Figure 3 This is a partial cross-sectional view of this embodiment;

[0035] Figure 4 This is a partial explosion diagram of this embodiment;

[0036] Figure 5 This embodiment Figure 3 Enlarged view of a portion;

[0037] Figure 6 This is a schematic diagram of the overall structure of the light guide cover in the embodiment.

[0038] Mark No. : 1, plate shell; 2, mounting groove; 3, wire passing groove; 4, positioning part; 5, positioning groove; 6, limiting part; 7, light transmission opening; 8, limiting groove; 9, avoiding surface; 10, guiding surface; 11, convex point; 12, light guide cover; 13, accommodating groove; 14, solder part; 15, excess convex; 16, inclined side wall; 17, clamping part. DETAILED DESCRIPTION

[0039] The specific embodiments of the technical solution will be further described in detail below with reference to the accompanying drawings.

[0040] Embodiment:

[0041] Referring to Figure 1 and Figure 4 , a backlight plate shell includes a plate shell 1, which has a mounting groove 2 recessed on one side end face in the thickness direction, and the front end of the mounting groove 2 can mount an LED lamp bead. The existing lamp bead structure often extends a pin structure including a positive pin for connecting to the positive pole of the power supply and a negative pin for connecting to the negative pole of the power supply.

[0042] Referring to Figure 3 , Figure 4 and Figure 5 , the mounting groove 2 is provided with a wire passing groove 3 corresponding to the front side edge of the plate shell 1, which is recessed from the edge of the plate shell 1 to the bottom of the mounting groove 2, for the pin structure to pass through, and the bottom of the mounting groove 2 is also provided with a limiting groove 8, which is located at the front end of the mounting groove 2 and communicates with the wire passing groove 3. The groove wall of the limiting groove 8 has an avoiding surface 9 located on the side of the limiting groove 8 away from the wire passing groove 3, which is set as an inclined surface and inclined downward toward the direction of the bottom of the limiting groove 8.

[0043] The plate shell 1 is provided with a positioning part 4, which at least includes two positioning parts 4 parts arranged on both sides of the slot edge of the limiting groove 8 and arranged oppositely, and the height value of the positioning part 4 protruding relative to the bottom of the mounting groove 2 is α, α = 0.8mm-1.6mm, and the α in the embodiment is preferably 1mm. The two positioning parts 4 are formed with a positioning groove 5 therebetween, which is adapted to the shape of the lamp bead, one side of the positioning groove 5 corresponds to the wire passing groove 3, and the other side opposite thereto leaves a light transmission opening 7; each positioning part 4 has an inclined side wall 16, so that the two inclined side walls 16 are arranged on the opposite inner side walls of the positioning groove 5 respectively, and the inclined direction of the two inclined side walls 16 is such that the groove width of the positioning groove 5 is set as a necked opening in the direction away from the wire passing groove 3, so that the positioning groove 5 has a special-shaped profile, one end of the positioning groove 5 with wider groove width communicates with the wire passing groove 3, and the cross-sectional shape of the positioning groove 5 in the transverse direction is preferably isosceles trapezoidal. Alternatively, the special-shaped profile can also be selected from a drop-shaped profile, a convex-shaped profile or other gradually expanding opening-shaped profile.

[0044] Each fixing part 4 has a guide surface 10 located inside the upper end of the corresponding fixing part 4, and the guide surfaces 10 on both sides are matched to make the upper end slot edge of the fixing slot 5 be flared in the direction away from the limiting slot 8, so as to cooperate to guide the lamp bead to pass through the opening at the upper end of the fixing slot 5.

[0045] The limiting part 6 is protruded on the edge of the wire passing groove 3 on both sides, and the inner wall distance of the limiting parts 6 on both sides is less than the width of the lamp bead, so that the lamp bead is in interference fit with the limiting part 6 when embedded.

[0046] Referring to Figure 3 , the plate shell 1 is provided with a protruding point 11 which is protruded on the side panel away from the mounting slot 2, when a plurality of plate shells 1 are put into the vibrating disc for one-by-one feeding, the vibrating disc has a conveying frame, the conveying frame is provided with a conveying device which is inclinedly arranged, so that the side wall of the protruding point 11 is abutted on the conveying track of the conveying device, the plate shell 1 is correspondingly abutted on the adjacent side wall of the conveying frame close to the conveying track, the conveying track drives the protruding point 11, so that the plate shell 1 is driven to move for feeding along the conveying frame.

[0047] The specific working process of the scheme is as follows:

[0048] The technical scheme embeds the lamp bead into the corresponding fixing slot 5 through the guide surface 10, and embeds the lower end into the limiting slot 8 through the avoiding surface 9, so as to limit the transverse swing of the lamp bead in the mounting slot 2, the inclined side wall 16 on both sides limits the movement of the lamp bead to the inside of the mounting slot 2 through the light transmission port 7, the pin of the lamp bead is correspondingly inserted through the wire passing groove 3, the limiting parts 6 on both sides are in interference fit with the lamp bead to form abutment constraint, and the lamp bead is limited to pass through the wire passing groove 3, so that the stability of the lamp bead installation is better, the risk of deviation is reduced, the requirement of assembly precision is reduced, the assembly difficulty is reduced, and the scheme is more suitable for mechanical assembly, realizes the embedding and fixing positioning effect of the lamp bead in the automatic equipment pushing assembly process, and improves the adaptability to production automation.

[0049] Referring to Figure 4 and Figure 6 , a backlight panel includes a light guide cover 12 which is adapted in size to the mounting slot 2, and the opposite side walls in the mounting slot 2 are protruded with clamping parts 17, the light guide cover 12 is clamped between the clamping parts 17 on both sides, so as to be fixed and positioned in the mounting slot 2.

[0050] The plate shell 1 and the light guide cover 12 are further provided with two excess protrusions 15, which are formed on the bottom of the installation groove 2. The light guide cover 12 is provided with a clearance groove 13 corresponding to the position of the installation groove 5, and an opening is left on the side wall of the light guide cover 12. The opening is positioned corresponding to the wire groove 3. The light guide cover 12 is aligned with the installation groove 2, and the light guide cover 12 is pressed to make the clamping part 17 on both sides clamped in the installation groove 2. The installation part 4 is embedded in the clearance groove 13, so that the clearance groove 13 and the installation groove 5 are combined to form a cavity capable of limiting the positioning of the lamp bead. The plate shell 1 and the light guide cover 12 are further provided with a solder part 14, which is arranged at the bottom of the installation groove 2 and distributed on the side of the installation part 4. The solder part 14 is used as a melting material for ultrasonic welding, and is used to bond the plate shell 1 and the light guide cover 12 after melting.

[0051] The specific working process of the scheme is as follows:

[0052] The plate shell 1 and the light guide cover 12 are further provided with two excess protrusions 15, which are formed on the bottom of the installation groove 2. The light guide cover 12 is provided with a clearance groove 13 corresponding to the position of the installation groove 5, and an opening is left on the side wall of the light guide cover 12. The opening is positioned corresponding to the wire groove 3. The light guide cover 12 is aligned with the installation groove 2, and the light guide cover 12 is pressed to make the clamping part 17 on both sides clamped in the installation groove 2. The installation part 4 is embedded in the clearance groove 13, so that the clearance groove 13 and the installation groove 5 are combined to form a cavity capable of limiting the positioning of the lamp bead. The plate shell 1 and the light guide cover 12 are further provided with a solder part 14, which is arranged at the bottom of the installation groove 2 and distributed on the side of the installation part 4. The solder part 14 is used as a melting material for ultrasonic welding, and is used to bond the plate shell 1 and the light guide cover 12 after melting.

[0053] The basic principle and main features of the technical scheme and the advantages of the technical scheme are shown and described above. Those skilled in the art should understand that the technical scheme is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the technical scheme. Without departing from the spirit and scope of the technical scheme, various changes and improvements can be made to the technical scheme, and these changes and improvements all fall within the scope of the claimed technical scheme. The scope of protection of the technical scheme is defined by the appended claims and their equivalents.

Claims

1. A back light plate housing comprising a plate housing (1), one side end face of said plate housing (1) is recessed to form a mounting groove (2), characterized in that: The plate shell (1) is provided with a fixed mounting portion (4), the inner side of the fixed mounting portion (4) is provided with a fixed mounting groove (5) for clamping a lamp bead, the edge of the plate shell (1) is provided with a wire passing groove (3), the wire passing groove (3) is recessed from the edge of the plate shell (1) to the bottom of the mounting groove (2), and the wire passing groove (3) is communicated to the outside of the plate shell (1), and the opposite side walls of the wire passing groove (3) at the groove position are provided with limiting portions (6).

2. The backlight housing of claim 1, wherein: The bottom of the mounting groove (2) is further provided with a limiting groove (8), the limiting groove (8) is provided with the fixed mounting portion (4) on the left and right sides of the groove edge, and the fixed mounting groove (5) is in position communication with the upper part of the limiting groove (8).

3. The backlight housing of claim 1, wherein: The end of the fixed mounting portion (4) opposite to the through hole of the wire passing groove (3) is provided with a light transmission hole (7), and the height of the fixed mounting portion (4) protruding relative to the bottom of the mounting groove (2) is 0.8mm-1.6mm.

4. The backlight housing of claim 2, wherein: The fixed mounting portion (4) is provided with a guide surface (10), and the inclination directions of the guide surfaces (10) on the two sides are opposite, so that the groove opening of the upper end edge of the fixed mounting groove (5) is arranged in an expanding manner away from the limiting groove (8).

5. The backlight housing of claim 2, wherein: The opposite inner side walls of the fixed mounting groove (5) are inclined side walls (16), and the inclination direction of the inclined side walls (16) is such that the groove width of the fixed mounting groove (5) is arranged in a narrowing manner away from the wire passing groove (3).

6. The backlight housing of claim 1, wherein: The fixed mounting groove (5) has a special-shaped profile.

7. The backlight housing of claim 2, wherein: The groove wall of the limiting groove (8) has a relief surface (9), and the inclination direction of the relief surface (9) is inclined downward close to the groove bottom of the limiting groove (8).

8. The backlight housing of claim 1, wherein: The side panel of the plate shell (1) away from the mounting groove (2) is protruded with a protruding point (11). 9.A backlight plate comprising a light guide cover (12) and a backlight plate shell according to any one of claims 1 to 8, the light guide cover (12) is provided with a relief groove (13) corresponding to the position of the fixed mounting groove (5), the opposite side walls in the mounting groove (2) are protruded with clamping portions (17), the light guide cover (12) is clamped between the clamping portions (17) on the two sides, so that the light guide cover (12) is embedded in the mounting groove (2) to be positioned, and the relief groove (13) and the fixed mounting groove (5) are combined to form a cavity for limiting the positioning of the lamp bead.

10. The backlight of claim 9, wherein: The plate shell (1) and the light guide cover (12) are further provided with a solder portion (14) distributed around the fixed mounting portion (4), which is used for ultrasonic welding melting to bond the plate shell (1) and the light guide cover (12). The plate shell (1) and the light guide cover (12) are further protruded with a surplus protrusion (15).

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