CN115727292A - Flat lamp and flat lamp device - Google Patents

Abstract

The application discloses dull and stereotyped lamps and lanterns and dull and stereotyped lamp device. The flat panel lamp comprises a light guide plate module, a light-transmitting shell and a light source module. The light guide plate module comprises at least two light guide plates which are arranged at intervals, a light guide gap is formed between every two adjacent light guide plates, and each light guide plate comprises a light inlet surface and a light outlet surface. The light-transmitting shell is provided with an accommodating cavity, and the light guide plate module is arranged in the accommodating cavity; the light-transmitting shell comprises a light-guiding panel and at least one first light-guiding side edge, the light-guiding panel covers the light-emitting surface of the light-guiding panel module, and the first light-guiding side edge is arranged on one side, facing the accommodating cavity, of the light-guiding panel and is located in the light-guiding gap. The light source module comprises a first light source and a second light source, the first light source is arranged opposite to the light inlet surface of the light guide plate, and light rays emitted by the first light source enter the light guide plate through the light inlet surface and are emitted out through the light outlet surface and the light guide panel. The light of the second light source is emitted out through the first light guide side edge. The flat lamp has rich lighting effect.

Description

Flat lamp and flat lamp device

Technical Field

The present application relates to the field of lamp technologies, and more particularly, to a flat panel lamp and a flat panel lamp device.

Background

Flat panel lamps are widely used in people's daily life. When the panel light is used for illumination, light rays are emitted out along the lampshade of the panel light. Because the lamp shade of dull and stereotyped lamp is the plane, the dull and stereotyped lamp that lights is a plane in the vision, does not have outstanding stereovision and feels, and visual effect is single. With the gradual improvement of the life taste of people, the flat lamp with the lighting function can not meet the use requirements of consumers.

Disclosure of Invention

The embodiment of the application provides a panel lamp and a panel lamp device.

According to a first aspect of the present application, an embodiment of the present application provides a flat panel lamp, which includes a light guide plate module, a light-transmitting casing, and a light source module. The light guide plate module comprises at least two light guide plates which are arranged at intervals, a light guide gap is formed between every two adjacent light guide plates, and each light guide plate comprises a light inlet surface and a light outlet surface. The light-transmitting shell is provided with an accommodating cavity, and the light guide plate module is arranged in the accommodating cavity; the light-transmitting shell comprises a light-guiding panel and at least one first light-guiding side edge, the light-guiding panel covers the light-emitting surface of the light-guiding plate module, and the first light-guiding side edge is arranged on one side, facing the accommodating cavity, of the light-guiding panel and is located in the light-guiding gap. The light source module comprises a first light source and a second light source, the first light source is arranged opposite to the light inlet surface of the light guide plate, and light rays emitted by the first light source enter the light guide plate through the light inlet surface and are emitted out through the light outlet surface and the light guide panel. The light of the second light source is emitted out through the first light guide side edge.

According to a second aspect of the present application, an embodiment of the present application provides a flat lamp device, which includes the above flat lamp, wherein a plurality of flat lamps are suitable for being arranged on a predetermined plane, and peripheral walls of two adjacent flat lamps are attached to each other.

The application provides a flat lamp and a flat lamp device provided with the flat lamp, light emitted by a first light source enters a light guide plate through a light inlet surface and is emitted through a light outlet surface and a light guide panel, and light emitted by a second light source is emitted through a first light guide side edge. The light guide plate and the first light guide side edge are provided with incident light respectively through the first light source and the second light source, surface light emitting and edge light emitting matched light effects can be achieved, light of the first light source and light of the second light source can be controlled independently respectively, and multiple light effects can be achieved. Because the second light source provides the incident light for first leaded light side alone, make the luminance of first leaded light side can customize according to the demand, when its colour or luminance and first light source are different, the luminous surface that the demonstration of the luminous line of first leaded light side is compared in on the leaded light panel is more outstanding, the luminous line combines the luminous surface that two at least light guide plates correspond, just can form three-dimensional light efficiency, has richened the light efficiency performance of panel lamps and lanterns, has richened user's the experience of watching.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a flat panel lamp provided in an embodiment of the present application.

Fig. 2 is an exploded perspective view of the flat panel lamp of fig. 1.

Fig. 3 is a schematic structural view of a light-transmitting housing of the flat panel lamp in fig. 2.

Fig. 4 is an assembly view of the light guide plate module and the light source module of the flat panel lamp in fig. 2.

Fig. 5 is a schematic view illustrating a lighting effect of a flat panel lamp according to an embodiment of the present application.

FIG. 6 is a schematic view of another light effect of the flat panel lamp according to the embodiment of the present application.

Fig. 7 is a schematic perspective sectional view of the flat panel lamp in fig. 1.

Fig. 8 is a partially enlarged schematic view of the flat panel lamp of fig. 7.

FIG. 9 is an enlarged schematic view of region A of the flat panel light fixture of FIG. 8.

Fig. 10 is an exploded perspective view of the flat panel lamp of fig. 7.

Fig. 11 is a partially enlarged schematic view of the flat panel lamp of fig. 10.

Fig. 12 is a schematic view of another light effect of the flat panel lamp in the embodiment of the present application.

Fig. 13 is a schematic view of the flat panel lamp of fig. 7 from another viewing angle with the bottom shell omitted.

FIG. 14 is an enlarged schematic view of region B of the flat panel light fixture of FIG. 13.

Fig. 15 is a schematic view of the top case of the flat panel lamp of fig. 13 in a virtual assembly.

Fig. 16 is a schematic structural diagram of a flat lamp device according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 and fig. 2, the present embodiment provides a flat panel lamp 100, and the flat panel lamp 100 may be used for illumination, decoration, and the like. The flat panel lamp 100 includes a light-transmissive housing 10, a light guide plate module 30 and a light source module 50. The light guide plate module 30 and the light source module 50 are disposed in the light-transmitting housing 10, and the light source module 50 is used for emitting light, which is guided out through the light guide plate module 30 and transmitted to the outside through the light-transmitting housing 10, so as to achieve the decoration or/and illumination effect.

Referring to fig. 3, in the present embodiment, the light-transmitting casing 10 may be substantially in a flat plate shape, and is used for defining the overall outer contour shape of the flat-plate lamp 100. The light-transmitting housing 10 has a receiving cavity 101, and the receiving cavity 101 is used for receiving the light guide plate module 30 and the light source module 50. The light-transmissive casing 10 is made of a light-transmissive material, and for example, the material of the light-transmissive casing 10 may include inorganic glass, organic polymer, fiber nanocomposite, and the like. As an example, the light-transmitting casing 10 may be made of at least one material of glass fiber reinforced plastic, resin, acrylic, etc., so that the light-transmitting casing 10 may be substantially transparent or translucent to facilitate the light inside to be transmitted out, thereby forming a clearer light profile.

In the present embodiment, the light-transmissive casing 10 includes a light-transmissive panel 12 and at least one first light-transmissive side 14.

The light guide panel 12 is used as an outer surface of the flat-plate luminaire 100, and has a substantially flat plate shape. The light guide panel 12 is used for covering the light guide plate module 30 and allowing the light in the light guide plate module 30 to penetrate through the light guide panel 12 and propagate to the outside, so as to form a surface-emitting light effect. The outline of the light guide panel 12 may be a polygon, such as a triangle, a quadrangle, a pentagon, a hexagon, etc., and may also be other irregular figures, for example, the outline of the light guide panel 12 is a figure whose outline is defined by a straight line segment and a curved line segment, and in the illustrated embodiment, the outline of the light guide panel 12 is substantially a regular hexagon. It should be understood that the specific profile of the light guide panel 12 should not be limited to the examples listed in this specification.

The first light guiding side 14 is disposed on one side of the light guiding panel 12 facing the accommodating cavity 101, and the first light guiding side 14 is used for allowing the light of the light source module 50 to pass through, so that when the light of the light source module 50 passes through the first light guiding side 14 and is emitted to the outside, a linear light emitting effect can be formed. In the embodiment, the first light guiding side 14 is substantially in the shape of a long strip, and the dimension of the first light guiding side in the length direction may be much larger than the dimension in the width direction or the thickness direction, for example, the dimension of the first light guiding side 14 in the length direction is three times larger than the dimension in the width direction, so that the structure is substantially in the shape of a long strip, and the first light guiding side is used for guiding out light to form a linear light emitting effect. The first light guiding side 14 is fixedly connected to the light guiding panel 12 and protrudes relative to the surface of the light guiding panel 12, and specifically, the first light guiding side 14 may be substantially perpendicular to the light guiding panel 12. Therefore, the first light guiding side 14 is located in the accommodating cavity 101 and divides the accommodating cavity 101 into at least two accommodating chambers 1011, and the accommodating chambers 1011 are used for accommodating the light guide plates in the light guide plate module 30.

In the embodiment of the present application, the number of the first light guiding side edges 14 is not limited by the present specification or the drawings of the specification, and may be one or more. Specifically, the number of the first light guiding sides 14 may be N, where N is a positive integer greater than or equal to 1, for example, N is 2 or greater than 2. By providing N first light guiding sides 14, the accommodating cavity 101 can be divided into at least N accommodating chambers 1011, so as to provide at least N corresponding light guiding plates. The N first light guiding sides 14 may also form N light emitting lines, which is beneficial to enriching the light effect performance of the flat panel lamp 100. In the present embodiment, the N first light guiding sides 14 are arranged on the surface of the light guiding panel 12 at intervals. As an example, the N first light guiding sides 14 may be substantially radially arranged with respect to the predetermined center point O. For example, each of the first light guiding sides 14 may include a first end 141 and a second end 143 opposite to each other, the first ends 141 of the N first light guiding sides 14 are connected to each other, a connection node of the first ends 141 of the N first light guiding sides 14 is a predetermined central point O, and the second end 143 of each of the first light guiding sides 14 extends away from the central point O. Since the first light guiding sides 14 are substantially flat, the arrangement makes the N first light guiding sides 14 radially arranged about the central point O. The included angle between each two adjacent first light guiding sides 14 is substantially the same, that is, the distance between the second ends 143 of each two adjacent first light guiding sides 14 is substantially the same. Specifically, in the embodiment shown in fig. 3, the number of the first light guiding sides 14 is three, and the three first light guiding sides 14 are substantially linearly and radially arranged with respect to the central point O. Certainly, in other embodiments, the first light guiding side 14 may also be in an arc shape, for example, when the first light guiding side 14 is in an arc shape, the N first light guiding sides 14 are arranged in a spiral radial shape with respect to the central point O; for another example, when the first light guiding sides 14 are wavy, the N first light guiding sides 14 are radially arranged outward in a wavy manner with respect to the central point O.

The N first light guiding sides 14 may be assembled or integrally formed. For example, the first ends 143 of the N first light directing sides 14 are all connected together (i.e., at the center point O), or the first ends 143 of the N first light directing sides 14 may be disposed substantially around the center point O but spaced apart from each other. The N first light guiding sides 14 may be connected to the light guiding panel 12 in an assembling manner, or may be connected to the light guiding panel in an integrally formed manner. For example, the light guide panel 12 and the first light guide side 14 are respectively prepared and molded and then connected together by an adhesive or a fastener; alternatively, the light guide panel 12 and the first light guide side 14 are made of the same material by injection molding or compression molding, so as to form the light-transmitting housing 10 with an integral structure.

In this embodiment, the light-transmitting casing 10 may further include a second light-guiding side 16, and the second light-guiding side 16 is disposed on a side of the light-guiding panel 12 facing the accommodating cavity 101. The second light guiding side 16 is used for allowing the light of the light source module 50 to pass through, and when the light of the light source module 50 passes through the second light guiding side 16 and then passes out to the outside, a linear light emitting effect can be formed. In this embodiment, the second light guiding side 16 is substantially in the shape of a strip plate, and the dimension in the length direction thereof may be much larger than the dimension in the width direction or the thickness direction, for example, the dimension in the length direction of the second light guiding side 16 is larger than three times the dimension in the width direction, so that the structure thereof is substantially in the shape of a strip plate, and is used for guiding out light to form a linear light emitting effect. The second light guiding side 16 is fixedly connected to the light guiding panel 12 and protrudes relative to the surface of the light guiding panel 12, and specifically, the second light guiding side 16 may be substantially perpendicular to the light guiding panel 12.

In the embodiment of the present application, the number of the second light guiding side edges 16 is not limited by the present specification or the drawings of the specification, and may be one or more. When the number of the second light guiding sides 16 is plural, the plural second light guiding sides 16 are connected end to end in sequence to define the receiving cavity 101 together. Specifically, the number of the second light guiding sides 16 may be M, where M is a positive integer greater than or equal to 2, for example, M is 2 or greater than 2, and M is an integer multiple of N. The (M/N) second light guiding sides 16 are sequentially connected between the two adjacent first light guiding sides 14, so that the (M/N) second light guiding sides 16 and the two first light guiding sides jointly surround and define a corresponding accommodating chamber 1011, and the accommodating chamber 1011 is used for accommodating a corresponding light guiding plate in the light guiding plate module 30. A plurality of M luminous lines can also be formed to a plurality of M second leaded light sides 16, and the luminous line that a plurality of M second leaded light sides 16 and a plurality of N first leaded light sides 14 formed combines the light emitting face that the corresponding light guide plate formed, can customize multiple light efficiency: for example, a solid geometric light effect is formed, which is beneficial to enrich the light effect performance of the flat panel lamp 100.

In the embodiment shown in fig. 3, the number of the second light guiding sides 16 is six, the number of the first light guiding sides 14 is three, and every two second light guiding sides 16 are sequentially connected between two adjacent first light guiding sides 14, so that the two second light guiding sides 16 and the two first light guiding sides 14 jointly surround and define a corresponding accommodating chamber 1011. When the plurality of light guide plates in the light guide plate module 30 are respectively disposed in the corresponding receiving chambers 1011, it is advantageous to form a hexahedral solid geometry light effect. In the present embodiment, the M second light guiding sides 16 and the light guiding panel 12 may be assembled or integrally formed. For example, the light guide panel 12 and the second light guide side edge 16 are separately molded and then connected together by an adhesive or a fastener; alternatively, the light guide panel 12 and the second light guide side 16 are made of the same material by injection molding or compression molding.

Referring to fig. 4, the light guide plate module 30 is disposed in the accommodating cavity 101 of the light transmissive casing 10, and is used for guiding the light of the light source module 50 to the light transmissive casing 10, so that the light penetrates through the light transmissive casing 10 and is emitted out to form a light effect of a light emitting surface. The light guide plate module 30 includes at least two light guide plates 32 disposed at intervals, and the at least two light guide plates 32 are arranged on the same plane, so as to form a surface-emitting light effect. When the two light guide plates 32 are arranged in the accommodating cavity 101, the light guide panel 12 covers the light emitting surface of the light guide plate module 30/the light guide plate 32. Form light guide clearance 301 between two adjacent light guide plates 32, light guide clearance 301 is used for holding first light guide side 14, when first light guide side 14 sets up in light guide clearance 301, light source module 50's some light can be in proper order via light guide plate 32 and light guide panel 12 and jet out in order to form the light emitting face, and simultaneously, light source module 50's other partial light can also be via first light guide side 14 and jet out formation luminous line, thereby can form the light efficiency that light emitting face and luminous line combined together. When the brightness of the light corresponding to the at least two light guide plates 32 is different, because the light emitting line formed by the first light guide side edge 14 is between the two light guide plates 32, the light emitting line can be prominently displayed between the at least two light emitting surfaces, and the combination of the at least two light emitting surfaces and the light emitting line can form a stereoscopic light effect with a relatively high level of perception (such as the example shown in fig. 5), so that the light effect performance of the flat lamp 100 can be enriched.

Referring to fig. 4 again, in the embodiment of the present disclosure, the number of the light guide plates 32 is N, where N is a positive integer greater than or equal to 1, for example, N is 2 or greater than 2. The number of the light guide plates 32 may be substantially the same as the number of the first light guide sides 14, and therefore, the N light guide plates 32 are disposed in the N accommodating chambers 1011 formed by the N first light guide sides 14 in a one-to-one correspondence, so that the N light guide plates 32 are sequentially distributed around the predetermined central point O, and each first light guide side 14 is located between two corresponding adjacent light guide plates 32. The light guide plates 32 in this embodiment are three, the first light guide side edges 14 are three, the light guide plates 32 are all of a rhombus structure, the three light guide plates 32 are sequentially distributed around a predetermined central point O, and can jointly form a regular hexagonal light emitting surface structure, when the light of the light source module 50 is emitted through the three light guide plates 32 and the three first light guide side edges 14, the combination of the light emitting surface and the light emitting line can form a visual three-dimensional light effect as shown in fig. 6, and in the light effect, a three-dimensional hexahedral figure can be observed by human eyes (in the figure, the color or brightness difference between different light emitting surfaces is reflected by different gray levels).

Referring to fig. 4 again, the light guide plate 32 includes a light inlet surface 321 and a light outlet surface 323, the light outlet surface 323 is disposed opposite to the light guide panel 12, the light inlet surface 321 is used for allowing the light of the light source module 50 to enter, and the incident light is emitted through the light outlet surface 323. In the present embodiment, the light entrance surface 321 is a peripheral wall of the light guide plate 32, and is disposed substantially along the thickness direction of the light guide plate 32 and adjacent to the light exit surface 323.

Further, the light guide plate 32 may further include a back surface 325 (fig. 2) away from the light exit surface 323, the back surface 325 is located on a side of the light guide plate 32 away from the light guide panel 12, and the light entrance surface 321 is connected between the back surface 325 and the light exit surface 323. The back 325 is provided with a texture reflective mesh structure, the texture reflective mesh structure is used for diffusing the light in the light guide plate 32, the mirror reflection condition can be broken through the texture reflective mesh structure, when the light of the light source module 50 enters the light guide plate 32 through the light inlet face 321 and then is transmitted in the light guide plate 32, due to the effect of the texture reflective mesh structure, the light can be diffused to each angle, and then is uniformly emitted through the light outlet face 321, so that a light emitting face with uniform brightness is formed.

Referring to fig. 7 to 9, in the present embodiment, the light inlet surface 321 is disposed on a side of the light guide plate 321 away from the light guide gap 301 to prevent the light inlet surface 321 from being located between the light guide plates 32, so as to facilitate the layout of the light emitting units of the light source module 50. In contrast, the light entrance surface 321 is located on the opposite outer side of the light guide plates 32, that is, the light entrance surface 321 of one light guide plate 32 is located on the side of the light guide plate 32 not adjacent to the other light guide plates 32, so that the light entrance surface 321 is spaced from the inner wall of the second light guide side 16 of the light-transmitting housing 10, a predetermined gap 160 is formed between the light entrance surface 521 and the corresponding second light guide side 16, and the predetermined gap 160 is used for accommodating a part of the structure of the light source module 50, so as to make the structure of the flat panel lamp 100 more compact.

Further, the light guide plate 32 further includes a plurality of side surfaces 327 (fig. 4), the side surfaces 327 are connected between the back surface 325 and the light emitting surface 323, and the light entering surface 321 and the plurality of side surfaces 327 together form an outer sidewall of the light guide plate 32. The side surface 327 is located on a side of the light guide plate 32 facing the light guide gap 301, and the side surface 327 of one light guide plate 32 is disposed at an interval opposite to the side surface 327 of the light guide plate 32 adjacent to the light guide plate 32. The number of the light entrance surfaces 321 included in one light guide plate 32 may be multiple, for example, two or more, and the light entrance surfaces 321 and the side surfaces 327 together define the outer contour of the light guide plate 32 as a polygonal geometry, which is favorable for forming a stereoscopic light effect. In the present embodiment, the light guide plate 32 is substantially in the shape of a rhombus plate, one light guide plate 32 includes two light inlet surfaces 321 and two side surfaces 327, and the length dimensions of the light inlet surfaces 321 and the side surfaces 327 are substantially the same.

Further, the light guide plate module 30 may further include a reflective layer 34, the reflective layer 34 is disposed on at least one of the back 325 and the side 327, and a reflective surface of the reflective layer 34 is disposed toward the inside of the light guide plate 32, so as to reflect the light transmitted to the back 325 and/or the side 327 to the inside of the light guide plate 32. The reflective layer 34 may be reflective paper, which may be attached to the back 325 or/and the side 327. Alternatively, the light-reflective layer 34 may be a reflective coating applied to the back 325 and/or side 327. By arranging the reflective layer 34, light can be prevented from leaking out of the side surface of the light guide plate 32 except the light exit surface 323, for example, when the reflective layer 34 is arranged on the side surface 327, light can be prevented from leaking out of the light guide gap 301 through the side surface 327, so that gap light mixing is effectively avoided, and the outline of the light emitting surface formed by the light guide plate 32 is clearer; by arranging the reflective layer 34, the light loss of light during propagation in the light guide plate 32 can be reduced, and the light utilization rate is high.

The light source module 50 is disposed on a side of the light guide plate module 30 away from the light guide panel 12. In the present embodiment, referring to fig. 10 and 11, the light source module 50 includes a first light source 52 and a second light source 54, the first light source 52 is disposed opposite to the light inlet surface 321 of the light guide plate 32, the light emitted by the first light source 32 enters the light guide plate 32 through the light inlet surface 321 and is emitted through the light outlet surface 323 and the light guide panel 12, and the light of the second light source 54 is emitted through the first light guide side 14. The first light source 52 and the second light source 54 respectively provide incident light for the light guide plate 32 and the first light guide side edge 14, so that the light effect of surface light emission and edge light emission can be realized, and the light of the first light source 52 and the light of the second light source 54 can be respectively and independently controlled, thereby being beneficial to realizing various light effects. Further, because the second light source 54 provides incident light for the first light guide side 14 alone, the brightness of the first light guide side 14 can be customized according to the requirement, when the color or brightness of the first light source is different from that of the first light source 12, the display of the light emitting line of the first light guide side 14 is more prominent than the light emitting surface on the light guide panel 12, the light emitting line combines the light emitting surfaces corresponding to the at least two light guide plates 32, so that a three-dimensional light effect can be formed, and the light effect performance of the flat panel lamp 100 is enriched.

In the embodiment shown in fig. 11, the light source module 50 may further include a substrate 51, the substrate 51 is disposed on a side of the light guide plate module 30 facing away from the light guide panel 12, and the first light source 52 and the second light source 54 are both disposed on the substrate 51. The substrate 51 may be a printed circuit substrate, on which conductive traces may be provided for electrical connection with the first light source 52 and the second light source 54. The first light source 52 is disposed on one side of the substrate 51 facing the light guide plate 32, and is substantially disposed at an edge portion of the substrate 51. Since the light inlet surface 321 of the light guide plate 32 is located between the light outlet surface 325 and the substrate 51, the first light source 52 can be disposed toward the light inlet surface 321, and the first light source 52 and the light guide plate 32 are substantially arranged on the same plane, which can effectively reduce the size of the flat panel lamp 100 in the thickness direction. In the embodiment, the number of the first light sources 52 is multiple, the multiple first light sources 52 are disposed in one-to-one correspondence with the multiple light inlet surfaces 321, and the light of each first light source 52 is incident into the light guide plate 32 through the corresponding light inlet surface 321.

The first light source 52 includes a plurality of first light emitting units 521, and the plurality of first light emitting units 521 are sequentially arranged at intervals along the extending direction of the corresponding light entering surface 321. The first light emitting unit 521 may be an LED light emitting unit, the light emitting side of which is disposed toward the light inlet face 321. Since the light inlet face 321 is disposed opposite to the inner wall of the second light guide side 16 of the light-transmitting casing 10 at an interval, and the light inlet face 521 and the corresponding second light guide side 16 form a predetermined gap 160 therebetween, the plurality of first light emitting units 521 are disposed in the predetermined gap 160, and the first light emitting units 521 face away from the second light guide side 16, so that light from the first light source 52 can be incident on the light guide plate 12 as much as possible.

Further, referring to fig. 9 again, in order to prevent the light of the first light source 52 from leaking out through the predetermined gap 160, the flat panel lamp 100 may further include a light shielding layer 72, and the light shielding layer 72 may be located on a side of the first light source 52 away from the substrate 51. Specifically, when the first light source 52 is disposed in the predetermined gap 160, the light guide panel 12 covers the predetermined gap 160, and when the light of the first light source 52 enters the light inlet face 321 along the plane of the substrate 51, a small portion of the light may be reflected by other portions and propagate in a direction away from the substrate 51, at this time, by disposing the light shielding layer 72 on the side of the first light source 52 away from the substrate 51, for example, by disposing the light shielding layer 72 between the first light source 52 and the light guide panel 12, the light of the portion can be blocked from being emitted, and while ensuring the light utilization efficiency to a certain extent, a gap can be formed between the light emitting surface formed by the light guide plate 32 and the light emitting line formed by the second light guide side 16, so that the contrast is formed, and the stereoscopic impression of the generated pattern is more remarkable in the full-bright state of the flat panel lamp 100, as shown in fig. 12.

Further, in the present embodiment, the light transmittance of the light shielding layer 72 is smaller than that of the light guide plate 32 and is also smaller than that of the light guide panel 12, so as to shield light to form a bright-dark contrast display effect. The light shielding layer 72 may be made of a non-transparent material, such as a light shielding material, and may be in a specific form: light blocking coatings, light blocking tapes, light blocking cloths, light blocking plates, and the like. The light shielding layer 72 may be attached to the inner surface of the light guide panel 12 and correspondingly cover the predetermined gap 160, or the light shielding layer 72 may be attached to the outer surface of the light guide panel 12, or the light shielding layer 72 itself may be a plate made of a light shielding material and fixed in the light-transmitting housing 10.

Referring to fig. 11 again, in the present embodiment, the flat panel lamp 100 may further include a diffuser module 74, and the diffuser module 74 is disposed between the light guide panel 12 and the light guide plate module 30 of the light-transmitting casing 10. The diffuser module 74 is used for diffusing the light emitted from the light guide plate module 30 to make the light on the light emitting surface more uniform. The diffuser module 74 may also be used to mount the light shielding layer 72, for example, the diffuser module 74 may cover the predetermined gap 160, and the light shielding layer 72 may be disposed on a side of the diffuser module 74 facing away from the predetermined gap 160 or a side facing the predetermined gap 160.

As an example, the diffuser module 74 may include at least two diffuser plates 741 disposed at a distance from each other, and the at least two diffuser plates 741 are disposed on the same plane. The diffusion plate 741 may be a diffusion plate for scattering light, and may have chemical particles as scattering particles therein, so that light is continuously refracted, reflected, and scattered in two media with different refractive indexes when passing through the scattering layer, thereby generating an optical diffusion effect. Or, the diffusion plate 741 may be a micro-structured light diffusion plate, and the surface of the diffusion plate may be provided with micro-structured features arranged in an array, so that light is refracted in different directions when passing through the diffusion plate, the traveling path of the light is changed, the light is sufficiently scattered, and a softer and more uniform illumination effect is achieved, where the micro-structured array may include at least one of the following structures: v-shaped groove arrays, U-shaped convex groove arrays, pyramid arrays, circular ring arrays, micro-lens arrays and the like. The number of the diffusion plates 74 is the same as that of the light guide plates 32, and at least two diffusion plates 74 are stacked on at least two light guide plates 32 in a one-to-one correspondence manner, so as to make the light emitted from the corresponding light guide plates 32 more uniform. Further, a through groove 7410 is formed between two adjacent diffusion plates 741, the through groove 7410 is opposite to and communicates with the corresponding light guide gap 301, and the through groove 7410 is used for partially accommodating the corresponding first light guide side 14. The first light guiding side 14 penetrates through the corresponding through groove 7410 and the corresponding light guiding gap 301, so as to be exposed at a side of the light guiding plate 32 facing away from the light guiding panel 12, thereby guiding out the light of the second light source 54.

The second light source 54 is fixed on a side of the substrate 51 away from the light guide plate module 30. In the present embodiment, the substrate 51 is provided with a avoiding groove 510, the avoiding groove 510 is opposite to and communicated with the corresponding light guiding gap 301, and the second light source 54 is disposed adjacent to the avoiding groove 510. The first light guiding side 14 sequentially penetrates through the through groove 7401, the light guiding gap 301 and the avoiding groove 510 and is exposed on a side of the substrate 51 away from the light guiding plate module 30, so that the light of the second light source 54 can be emitted into and penetrate through the first light guiding side 14 to be emitted. The number of the second light sources 54 may be the same as the number of the first light guiding sides 14, for example, the number of the second light sources 54 is multiple, the multiple second light sources 54 are arranged in one-to-one correspondence with the multiple first light guiding sides 14, and the light of each second light source 54 is emitted to the external environment through the corresponding first light guiding side 14 to form the light effect of the light emitting line.

Referring to fig. 13 and 14, in the present embodiment, in order to improve the light utilization rate of the second light source 54, the first light guiding side 14 may be exposed at a side of the substrate 51 away from the light guiding plate 32, for example, an end surface of the first light guiding side 14 is flush with a surface of the substrate 51 away from the light guiding plate 32, so that the light of the second light source 54 at the side of the substrate 51 can be directly incident to the first light guiding side 14.

In other embodiments, the first light guiding side 14 may protrude from a side of the substrate 51 away from the light guiding plate module 30, so that a part of the structure of the first light guiding side 14 can be disposed at an interval relative to the second light source 54, and the light of the corresponding second light source 54 can be directly incident to the first light guiding side 14, so that the light guiding efficiency is high, and the brightness of the light emitting line corresponding to the first light guiding side 14 is high. Further, in such an embodiment, a light reflecting member (not shown) may be disposed on a side of the first light guiding side 14 away from the second light source 54, and a light reflecting surface of the light reflecting member faces the inside of the first light guiding side 14, so as to prevent the light of the second light source 54 from being mixed with other light, and improve the utilization efficiency of the light of the second light source 54.

The second light source 54 includes a plurality of second light emitting units 541, and the plurality of second light emitting units 541 are sequentially arranged at intervals along the extending direction of the corresponding first light guiding side 14. The second light emitting unit 541 can be an LED light emitting unit, and the light emitting side thereof is disposed toward the first light guiding side 14.

In this embodiment, the light source module 50 may further include a third light source 56, where the third light source 56 is used for providing incident light to the second light guide side 16, that is, light of the third light source 56 is emitted through the second light guide side 16 to form a light effect of a light emitting line. Because the second light guide side edge 16 and the corresponding first light guide side edge 14 are arranged to surround one light guide plate 32 together, the light emitting lines corresponding to the second light guide side edge 16 and the corresponding first light guide side edge 14 surround the light emitting surface corresponding to the light guide plate 32, and a stereoscopic vision light effect with clear edges and corners is formed.

The third light source 56 is disposed on a side of the substrate 51 away from the light guide plate 32, and is substantially disposed at an edge of the substrate 51. The end of the second light guiding side 16 corresponding to the third light source 56 is exposed to a side of the substrate 51 away from the light guiding plate module 30, so that the light of the third light source 56 can enter and penetrate through the second light guiding side 16 to exit. The number of the third light sources 56 may be the same as the number of the second light guiding sides 16, for example, the number of the third light sources 56 is multiple, the plurality of third light sources 56 and the plurality of second light guiding sides 16 are arranged in a one-to-one correspondence, and the light of each third light source 56 is emitted to the external environment through the corresponding second light guiding side 16 to form a light emitting line.

In this embodiment, to improve the light utilization efficiency of the third light sources 56, the second light guiding side 16 may be exposed at a side of the substrate 51 away from the light guiding plate 32, for example, an end surface of the second light guiding side 16 is flush with a surface of the substrate 51 away from the light guiding plate 32, so that the light of the third light sources 56 at the side can be directly incident to the second light guiding side 16.

In other embodiments, the second light guiding side 16 may protrude from a side of the substrate 51 away from the light guiding plate module 30, so that a part of the second light guiding side 16 and the third light source 56 can be disposed at an interval, and the light of the corresponding third light source 56 can be directly incident on the second light guiding side 16. Further, in such an embodiment, a side of the second light guiding side 16 facing away from the third light source 56 may be provided with a light reflecting element (not shown), and a light reflecting surface of the light reflecting element faces the inside of the second light guiding side 16, so as to avoid mixing of the light of the third light source 56 with other light and improve the utilization efficiency of the light of the third light source 56.

The third light source 56 includes a plurality of third light emitting units 561, and the plurality of third light emitting units 561 are sequentially arranged at intervals along the extending direction of the corresponding second light guiding side 16. The third light emitting unit 561 may be an LED light emitting unit, and the light emitting side thereof is disposed toward the direction of the second light guiding side 16. Further, the third light emitting units 561 of the third light sources 56 are arranged at the edge of the substrate 51, and a distance between the third light sources 56 and the outer periphery of the substrate 51 is greater than a distance between the first light sources 52 and the outer periphery of the substrate 51, that is, the third light sources 56 are relatively closer to the center of the substrate 51, so that the first light sources 52 and the third light sources 56 are staggered in the thickness direction, thereby avoiding light crosstalk between them, and facilitating the layout of conductive traces on the substrate 51.

Referring to fig. 11 and fig. 15, in the present embodiment, the flat panel lamp 100 may further include a bottom case 90, and the bottom case 90 is used for being buckled with the light-transmitting housing 10 to accommodate the light guide plate module 30 and the light source module 50, so as to form a protection effect. The bottom case 90 includes a bottom wall 92 and a first light blocking bar 941.

The bottom wall 92 is substantially plate-shaped, is fixedly disposed on a side of the substrate 51 away from the light guide plate module 30, is disposed opposite to the substrate 51 at a distance, and can cover the accommodating cavity 101. The specific contour of the bottom wall 92 may be a polygon, such as a triangle, a quadrangle, a pentagon, a hexagon, etc., and may also be other irregular figures, for example, the outer contour of the bottom wall 92 is a figure defined by a straight line segment and a curved line segment, etc., and it should be understood that the specific contour of the bottom wall 92 should not be limited to the examples listed in this specification. Specifically, in the illustrated embodiment, the outline of bottom wall 92 is substantially the same as the outline of light guide panel 12, and the outline of bottom wall 92 is substantially a regular hexagon.

The first light blocking bar 941 is substantially in a strip structure, and is disposed between the bottom wall 92 and the substrate 51 and configured to prevent the second light sources 54 from being crossed with each other. Specifically, the first light blocking strip 941 is fixedly disposed on the bottom wall 92 and protrudes relative to the surface of the bottom wall 92. The number of the first light blocking bars 941 may be the same as that of the second light sources 54, for example, the number of the first light blocking bars 941 may be plural, and the plural first light blocking bars 941 are disposed in one-to-one correspondence with the plural second light sources 54. The first light blocking bars 941 are located at a side of the corresponding second light sources 54 departing from the corresponding first light guiding side 14, so as to prevent the second light sources 54 from leaking out of the back surface and being crossed with other second light sources 54.

Further, the bottom case 90 may further include a second light blocking strip 943, wherein the second light blocking strip 943 is substantially in a strip structure, is disposed between the bottom wall 92 and the substrate 51, and is used for preventing the third light sources 56 from being mixed with each other. Specifically, the second light blocking strip 943 is fixedly disposed on the bottom wall 92 and protrudes relative to the surface of the bottom wall 92. The number of the second light blocking bars 943 may be the same as the number of the third light sources 56, for example, the number of the second light blocking bars 943 may be plural, and the plural second light blocking bars 943 are provided in one-to-one correspondence with the plural third light sources 56. The second light-blocking strips 943 are disposed on a side of the corresponding third light sources 56 away from the corresponding second light-guiding side 16, so as to prevent the third light sources 56 from leaking out of the back surface and cross-talk with other third light sources 56.

In this embodiment, the bottom case 90 may further include a plurality of first spacing ribs 961, and the first spacing ribs 961 are sequentially arranged at intervals along the extending direction of the first light blocking bar 941. The first spacing rib 961 may be substantially perpendicular to the first light-blocking bars 941, and ends of the first spacing rib 961 may be connected to the corresponding first light-blocking bars 941. Each of the first spacing ribs 961 is positioned between adjacent two of the second light emitting units 541. When each second light-emitting unit 541 is controlled to emit light independently, the first spacer ribs 961 can prevent light from being mixed between the adjacent second light-emitting units 541, which is beneficial to forming a light-emitting line controlled in a segmented manner, so that the light efficiency of the flat lamp is richer.

Further, the bottom housing 90 may further include a plurality of second partition ribs 963, and the second partition ribs 963 are sequentially arranged at intervals along the extending direction of the second light blocking strip 943. The second partition ribs 963 may be substantially perpendicular to the second light blocking bars 943, and ends of the second partition ribs 963 may be connected to the corresponding second light blocking bars 943. Each second spacing rib 963 is located between two adjacent third light-emitting units 561, and when each third light-emitting unit 561 is controlled to emit light independently, the second spacing ribs 963 can prevent light from being mixed between the adjacent third light-emitting units 561, which is beneficial to forming a light-emitting line controlled in a segmented manner, so that the light efficiency of the flat panel lamp is richer, and for example, different parts of the same light-emitting line can have different brightness parameters (such as color or brightness).

In the present embodiment, the bottom case 90 may further include a plurality of peripheral walls 98, and the peripheral walls 98 are disposed on a side of the bottom wall 92 facing the substrate 51. The plurality of bottom walls 98 are all connected substantially to the periphery of the bottom wall 92, and the plurality of bottom walls 98 are connected end to end in sequence to collectively form a mounting cavity 980, and the mounting cavity 980 is used for accommodating the light-transmitting housing 10. When the light-transmitting housing 10 is embedded in the installation cavity 980, the peripheral wall 98 is located outside the second light-guiding side edge 16, that is, on the side of the second light-guiding side edge 16 departing from the light-guiding plate, so that the plurality of peripheral walls 98 surround and are arranged outside the plurality of second light-guiding side edges 16, light is prevented from leaking from the peripheral side of the second light-guiding side edges 16, and the outline of the light-emitting line formed by the second light-guiding side edges 16 is clearer. Further, the peripheral wall 98 may be made of a non-transparent material, or a light-shielding film may be provided on the peripheral wall 98, so that light can be effectively prevented from leaking out from the peripheral side.

In the present embodiment, the bottom wall 92 of the bottom housing 90, the first light blocking strip 941, the first spacing rib 943, the second light blocking strip 961, the second spacing rib 963 and the peripheral wall 98 may be assembled or integrally formed. The bottom wall 92, the first light blocking strips 941, the first spacing ribs 943, the second light blocking strips 961, the second spacing ribs 963 and the peripheral wall 98 are respectively prepared and molded and then connected together by an adhesive or a fastener; alternatively, the bottom wall 92, the first light blocking strips 941, the first spacing ribs 943, the second light blocking strips 961, the second spacing ribs 963, and the peripheral wall 98 are made of the same material by injection molding or press molding, so as to form the bottom case 90 of unitary structure.

Referring to fig. 16, the embodiment of the present application further provides a flat lamp device 200, where the flat lamp device 200 may include a plurality of flat lamps 100 provided in any one of the above embodiments, the plurality of flat lamps 100 are suitable for being arranged on a predetermined plane, and peripheral walls of two adjacent flat lamps 100 may be attached to each other. For example, when the flat panel lamp 100 does not have the bottom case 90, the outer peripheral walls of the light-transmitting housings 10 of two adjacent flat panel lamps 100 may be attached to each other or arranged substantially in parallel; alternatively, when the flat-panel lamp 100 is configured with the bottom housing 90, the peripheral walls 98 of the bottom housings 90 of two adjacent flat-panel lamps 100 may be attached to each other or arranged substantially in parallel. In this embodiment, the flat panel lamp 100 may be provided with an insertion port and a corresponding buckle, the insertion port and the corresponding buckle may be disposed on the bottom case 90, and each flat panel lamp 100 may be buckled in the insertion port of the adjacent flat panel lamp 100 through the buckle, so as to realize reliable splicing among the plurality of flat panel lamps 100. By arranging a plurality of the assembled flat lamps 100, different patterns can be spliced, and a more three-dimensional visual effect is presented.

The application provides a flat lamp and a flat lamp device provided with the flat lamp, light emitted by a first light source enters a light guide plate through a light inlet surface and is emitted through a light outlet surface and a light guide panel, and light emitted by a second light source is emitted through a first light guide side edge. The light guide plate and the first light guide side edge are provided with incident light respectively through the first light source and the second light source, surface light emitting and edge light emitting matched light effects can be achieved, light of the first light source and light of the second light source can be controlled independently respectively, and multiple light effects can be achieved. Because the second light source provides the incident light for first leaded light side alone, make the luminance of first leaded light side can customize according to the demand, when its colour or luminance and first light source are different, the luminous surface that the demonstration of the luminous line of first leaded light side is more outstanding than on the leaded light panel, and the luminous line combines the luminous surface that two at least light guide plates correspond, just can form three-dimensional light efficiency, has richened the light efficiency performance of panel lamps and lanterns.

In the description of the present application, certain terms are used throughout the description and following claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. The specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to,"; "substantially" means that a person skilled in the art is able to solve the technical problem within a certain error range and to achieve the technical result substantially.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are simply used for convenience of description of the present application, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In this application, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise specifically stated or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through the inside of two members or they may be merely surface-contacting. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (20)

1. A flat panel light fixture, comprising:

the light guide plate module comprises at least two light guide plates which are arranged at intervals, a light guide gap is formed between every two adjacent light guide plates, and each light guide plate comprises a light inlet surface and a light outlet surface;

the light guide plate module is arranged in the accommodating cavity; the light-transmitting shell comprises a light-guiding panel and at least one first light-guiding side edge, the light-guiding panel covers the light-emitting surface of the light-guiding panel module, and the first light-guiding side edge is arranged on one side, facing the accommodating cavity, of the light-guiding panel and is positioned in the light-guiding gap; and

the light source module comprises a first light source and a second light source, the first light source is arranged opposite to the light inlet surface of the light guide plate, and light rays emitted by the first light source enter the light guide plate through the light inlet surface and are emitted out through the light outlet surface and the light guide panel; the light of the second light source is emitted out through the first light guide side edge.

2. The flat panel lamp according to claim 1, wherein the light-transmissive housing further comprises a plurality of second light-guiding sides, the plurality of second light-guiding sides are disposed on a side of the light-guiding panel facing the receiving cavity, and the plurality of second light-guiding sides are sequentially connected end to define the receiving cavity together; the light source module further comprises a third light source arranged in the accommodating cavity, and light of the third light source is emitted from the second light guide side edge.

3. The flat panel lamp as claimed in claim 2, wherein the first light guiding side is disposed in the receiving cavity and divides the receiving cavity into at least two receiving chambers, and each light guiding plate is disposed in a corresponding receiving chamber.

4. A flat panel lamp as claimed in claim 2, wherein the light guide plate further includes a back surface facing away from the light exit surface, the light entrance surface is connected between the back surface and the light exit surface and is disposed opposite to the corresponding second light guide side at an interval to form a predetermined gap, and the first light source is disposed in the predetermined gap.

5. A flat panel light fixture as recited in claim 4, wherein the light guide panel covers the predetermined gap, the first light source being spaced apart from the light guide panel; the flat panel lamp further comprises a shading layer, and the shading layer is arranged between the first light source and the light guide panel.

6. The flat panel lamp as claimed in claim 4, wherein the light guide plate further comprises a plurality of side surfaces, the side surfaces are connected between the back surface and the light exit surface, and the light entrance surface and the plurality of side surfaces together form an outer sidewall of the light guide plate; the side surface of one light guide plate is opposite to the side surface of the light guide plate adjacent to the light guide plate at intervals; the light guide plate module further comprises a light reflecting layer, the light reflecting layer is arranged on the back face and at least one of the side faces, and the light reflecting face of the light reflecting layer faces towards the inside of the light guide plate.

7. A flat panel lamp as recited in claim 1, further comprising a diffuser module disposed between the light guide plate module and the light guide panel.

8. A flat panel lamp as claimed in claim 7, wherein said diffuser plate module comprises at least two diffuser plates spaced apart from each other, a through slot is formed between two adjacent diffuser plates, said through slot is opposite to and communicates with the corresponding light guide gap, and said first light guide side is disposed through the corresponding through slot and the corresponding light guide gap.

9. The flat panel lamp as claimed in claim 1, wherein the light source module further includes a substrate, the substrate is disposed on a side of the light guide plate module facing away from the light guide panel, the first light source and the second light source are both disposed on the substrate, and the light inlet surface is located between the light outlet surface and the substrate; the first light source comprises a plurality of first light emitting units, and the first light emitting units are sequentially arranged at intervals along the extending direction of the light inlet surface.

10. The flat panel lamp as claimed in claim 9, wherein the second light source is fixed to a side of the substrate away from the light guide plate module, the substrate is provided with a avoiding groove, the avoiding groove is opposite to and communicated with the corresponding light guide gap, and the first light guide side edge penetrates through the avoiding groove and is exposed to a side of the substrate away from the light guide plate module, so that light of the second light source can be incident on the first light guide side edge.

11. A flat panel lamp as claimed in claim 10, wherein the first light guiding side is flush with a surface of the substrate facing away from the light guiding plate module; alternatively, the first and second electrodes may be,

the first light guide side edge protrudes relative to one side, deviating from the light guide plate module, of the substrate so as to be arranged at an interval relative to the second light source, and a reflecting piece is arranged on one side, deviating from the second light source, of the first light guide side edge.

12. The flat panel lamp according to claim 10, further comprising a bottom housing disposed on a side of the substrate facing away from the light guide plate module; the bottom shell comprises a bottom wall and a first light blocking strip, the bottom wall and the base plate are arranged at intervals, and the first light blocking strip is arranged between the bottom wall and the base plate and located on one side, deviating from the corresponding first light guide side edge, of the second light source.

13. The flat panel lamp according to claim 12, wherein the second light source includes a plurality of second light emitting units, and the plurality of second light emitting units are sequentially arranged at intervals along the extending direction of the first light guiding side; the drain pan still includes a plurality of first interval ribs, and is a plurality of first interval rib sets up at intervals in proper order, and every first interval rib is located adjacent two between the second luminescence unit.

14. A flat panel light fixture as recited in claim 12, wherein the bottom housing further comprises a plurality of perimeter walls connected to a side of the bottom wall facing the substrate, the plurality of perimeter walls being joined end-to-end in series to collectively form a mounting cavity, the light-transmissive shell being embedded in the mounting cavity.

15. The flat panel lamp according to claim 14, wherein the light-transmissive housing further includes a plurality of second light-guiding sides, the plurality of second light-guiding sides are disposed on a side of the light-guiding panel facing the receiving cavity, the plurality of second light-guiding sides are sequentially connected end to define the receiving cavity, the light source module further includes a third light source disposed in the receiving cavity, and light of the third light source is emitted from the second light-guiding sides; the peripheral walls are arranged outside the second light guide side edges in a surrounding mode.

16. A flat panel light fixture as claimed in any one of claims 1 to 14 wherein the number of first light directing sides is N, N being a positive integer greater than or equal to 2; the number of the light guide plates is N, the N light guide plates are sequentially distributed around a preset center, and each first light guide side edge is arranged between two corresponding adjacent light guide plates.

17. The flat panel lamp according to claim 16, wherein the light-transmissive housing further comprises a plurality of second light-guiding sides, the plurality of second light-guiding sides are disposed on a side of the light-guiding panel facing the receiving cavity, and the plurality of second light-guiding sides are sequentially connected end to define the receiving cavity together; the light source module further comprises a third light source arranged in the accommodating cavity, and light of the third light source is emitted out through the second light guide side edge.

18. A flat panel lamp as recited in claim 17, wherein the second light directing sides are M, M being a positive integer greater than or equal to 2, and M being an integer multiple of N; the (M/N) second light guide side edges are sequentially connected between the two adjacent first light guide side edges, so that the (M/N) second light guide side edges and the two first light guide side edges jointly surround the corresponding light guide plate.

19. A flat panel lamp as claimed in claim 17, wherein the number of the first light guiding sides is three, the number of the second light guiding sides is six, and every two of the second light guiding sides are sequentially connected between two adjacent first light guiding sides, so that the two second light guiding sides and the two first light guiding sides jointly surround a corresponding light guiding plate.

20. A flat lamp device, comprising a plurality of flat lamps as claimed in any one of claims 1 to 19, wherein the plurality of flat lamps are adapted to be arranged on a predetermined plane, and the peripheral walls of two adjacent flat lamps are attached to each other.

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