Light guide plate and fire emergency marker lamp

Abstract

The utility model relates to the technical field of lighting structures, and provides a light guide plate and a fire-fighting emergency marker lamp, the light guide plate comprises a transparent plate body structure, and the plate body structure is provided with a first surface and a second surface located on the opposite side of the first surface; a plurality of first reflective structures are arranged on the first surface, and a plurality of second reflective structures are arranged on the second surface; one end, in the second direction, of the plate body structure is provided with at least two light incidence structures, the light incidence structures are sequentially arranged at intervals in the first direction, and the first direction is perpendicular to the second direction; according to the light guide plate provided by the embodiment of the invention, the light source can simultaneously enter the plate body structure through the plurality of light incidence structures, and the first surface and the second surface of the plate body structure can simultaneously perform light reflection and guide operation through the first light reflection structure and the second light reflection structure respectively, so that the light guide effect of the light guide plate is better.

Description

Technical Field

[0001] The present application relates to the technical field of lighting structures, and in particular provides a light guide plate, namely a fire emergency sign light. Background Art

[0002] Sign lights can be used as road signs or emergency evacuation and guidance lights in various places and environments. They are mainly used as lights for indication. In the field of fire emergency evacuation, sign lights include direction indicator lights and floor indicator lights.

[0003] The fire emergency sign lamp in the prior art mainly uses a light guide plate to transmit the light of the LED lamp beads to the sign hole on the cover of the fire emergency sign lamp to achieve the purpose of displaying the sign pattern of the fire emergency sign lamp. The light source circuit board in the lamp is generally connected to the bottom of the light guide plate. Due to the limitation of the light emitting angle of the lamp beads, when the distance between the two lamp beads is far, the brightness will decrease between the two lamps, which reduces the optical effect of the fire emergency sign lamp; in addition, the light guide plate is only provided with a reflective point on the back of the light emitting surface, which will cause the problem of uneven brightness of the light emitting surfaces on both sides when it is applied to double-sided light emitting lamps. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a light guide plate and a fire emergency sign light, aiming to solve the problem of poor light guiding effect of the light guide plate in the related art.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0006] In a first aspect, an embodiment of the present application provides a light guide plate, comprising a plate structure, which is transparent and has a first surface and a second surface located on the other side of the first surface; a plurality of first light reflecting structures are arranged on the first surface, and a plurality of second light reflecting structures are arranged on the second surface; a light incident structure is arranged at one end of the plate structure in the second direction, and the number of the light incident structures is at least two, and the light incident structures are arranged in sequence at intervals along the first direction; the first direction is perpendicular to the second direction.

[0007] Beneficial effects of the embodiments of the present application: The light guide plate provided by the embodiments of the present application is configured by respectively arranging a plurality of first light reflecting structures and a plurality of second light reflecting structures on the first surface and the second surface on both sides of the plate structure, and arranging a plurality of light incident structures at one end of the plate structure in the second direction, and the light incident structures are arranged in sequence and at intervals along the first direction, thereby, the light source can be simultaneously emitted into the plate structure through the plurality of light incident structures, and the first surface and the second surface of the plate structure can respectively perform reflective light guiding operations simultaneously through the first light reflecting structures and the second light reflecting structures, and the transparent plate structure can improve the uniformity of light emission of the first surface and the second surface, thereby effectively improving the reflective light guiding effect of the light on the plate structure, that is, the light guiding effect of the light guide plate is better.

[0008] In some embodiments, the light incident structure has a light incident end facing the external light source, and the light incident end is recessed inward to form an arc-shaped end surface.

[0009] In some embodiments, in the first direction, the gaps between any two adjacent light incident structures are equal.

[0010] In some embodiments, along the thickness direction of the plate structure, the projection of the first light reflecting structure and the projection of the second light reflecting structure are separated.

[0011] In some embodiments, the first light reflecting structure includes a plurality of rows of first light reflecting point groups sequentially arranged at intervals along the second direction, the first light reflecting point groups include a plurality of first light reflecting points, and the first light reflecting points are sequentially arranged at intervals along the first direction;

[0012] The first reflective structure further includes a plurality of rows of second reflective point groups sequentially arranged at intervals along the second direction, the second reflective point groups include a plurality of second reflective points, and the second reflective points are sequentially arranged at intervals along the first direction;

[0013] In the second direction, the first light reflecting point group and the second light reflecting point group are arranged alternately in sequence, and in the second direction, the first light reflecting point is located between two adjacent second light reflecting points.

[0014] In some embodiments, in the second direction and in a direction away from the light incident structure, a gap between two adjacent groups of the first light reflecting points tends to decrease, and a gap between two adjacent groups of the second light reflecting points tends to decrease.

[0015] In some embodiments, the second reflective structure includes a plurality of rows of third reflective point groups sequentially arranged at intervals along the second direction, the third reflective point groups include a plurality of third reflective points, and the third reflective points are sequentially arranged at intervals along the first direction;

[0016] The second reflective structure further includes a plurality of rows of fourth reflective point groups sequentially arranged at intervals along the second direction, the fourth reflective point groups include a plurality of fourth reflective points, and the fourth reflective points are sequentially arranged at intervals along the first direction;

[0017] In the second direction, the third light reflecting point group and the fourth light reflecting point group are arranged alternately in sequence, and in the second direction, the third light reflecting point is located between two adjacent fourth light reflecting points.

[0018] In some embodiments, in the second direction and in a direction away from the light incident structure, the gap between two adjacent groups of the third light reflecting dots tends to decrease, and the gap between two adjacent groups of the fourth light reflecting dots tends to decrease.

[0019] In a second aspect, an embodiment of the present application further provides a fire emergency sign light, comprising a light source and a light guide plate as described above, wherein the light source is arranged on the outside of the light incident structure, and the light emission direction of the light source is toward the light incident structure.

[0020] Beneficial effects of the embodiments of the present application: The fire emergency sign light provided by the embodiments of the present application includes the above-mentioned light guide plate. On the basis that the above-mentioned light guide plate has a better light guiding effect, the display effect of the fire emergency sign light is better.

[0021] In some embodiments, the light incident structure has a light incident end facing an external light source, and the light incident end is recessed inward to form an arc-shaped end surface; the light source is disposed at the center of the arc-shaped end surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a fire emergency sign light provided in an embodiment of the present application;

[0024] Figure 2 A schematic structural diagram of one side of a light guide plate provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the structure of the other side of the light guide plate provided in an embodiment of the present application;

[0026] Figure 4 for Figure 3 A local enlarged schematic diagram of point A;

[0027] Figure 5 A schematic diagram of the distribution structure of the light incident structure and the light source provided in the embodiment of the present application;

[0028] Figure 6 A schematic structural diagram of a light guide plate provided in an embodiment of the present application from another perspective;

[0029] Figure 7 for Figure 6 A partial enlarged schematic diagram of point B.

[0030] Among them, the reference numerals in the figure are:

[0031] 1000. Fire emergency sign lights;

[0032] 100. light guide plate; 200. light source;

[0033] 10. Plate structure; 101. First surface; 102. Second surface; 11. First reflective structure; 111. First reflective point group; 111a. First reflective point; 112. Second reflective point group; 112a. Second reflective point; 12. Second reflective structure; 113. Third reflective point group; 113a. Third reflective point; 114. Fourth reflective point group;

[0034] 20. Light incident structure; 21. Light incident end;

[0035] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Sign lights can be used in various places and environments as road signs or as safe evacuation and guidance signs in emergencies. They are a type of lamp that mainly provides an indication function. In the field of fire emergency evacuation, sign lights include direction indicator lights and floor indicator lights. The fire emergency sign lamps in the prior art mainly use light guide plates to transmit the light of LED lamp beads to the sign holes on the cover of the fire emergency sign lamps, so as to achieve the purpose of displaying the sign pattern of the fire emergency sign lamps. The light source circuit board in the lamp is generally connected to the lower bottom of the light guide plate. Due to the limitation of the light emitting angle of the lamp beads, when the distance between the two lamp beads is far, the brightness will decrease between the two lamps, reducing the optical effect of the fire emergency sign lamp; in addition, the light guide plate is only provided with reflective points on the back of the light emitting surface, which will cause uneven brightness on both sides of the light emitting surface when applied to double-sided light emitting lamps.

[0041] Based on the above considerations, in order to solve the problem of poor light guiding effect of the light guide plate in the related art, a light guide plate is designed, by respectively arranging a plurality of first light reflecting structures and a plurality of second light reflecting structures on the first surface and the second surface on both sides of the plate structure, and arranging a plurality of light incident structures at one end of the plate structure in the second direction, and the light incident structures are arranged in sequence and at intervals along the first direction, thereby, the light source can be simultaneously emitted into the plate structure through the plurality of light incident structures, and the first surface and the second surface of the plate structure can respectively perform reflective light guiding operations through the first light reflecting structure and the second reflective structure at the same time, thereby effectively improving the reflective light guiding effect of the light on the plate structure, that is, the light guiding of the light guide plate is better.

[0042] Below, the light guide plate of the embodiment of the present application will be described in detail according to specific implementation methods.

[0043] Please refer to Figures 2 to 7 In the first aspect, the embodiment of the present application provides a light guide plate 100, including a plate structure 10, the plate structure 10 is transparent, and the plate structure 10 has a first surface 101 and a second surface 102 located on the other side opposite to the first surface 101; a plurality of first light reflecting structures 11 are arranged on the first surface 101, and a plurality of second light reflecting structures 12 are arranged on the second surface 102; a light incident structure 20 is arranged at one end of the plate structure 10 in the second direction Y, the number of the light incident structures 20 is at least two, and the light incident structures 20 are arranged in sequence along the first direction X at intervals; the first direction X is perpendicular to the second direction Y.

[0044] Among them, the plate structure 10 is the main structure of the light guide plate 100, and the plate structure 10 is used to introduce external light so that the plate structure 10 is in a luminous state, so that the plate structure 10 can be used as a light-emitting plate to display patterns; exemplarily, when the light guide plate 100 is applied to sign lamps, the plate structure 10 can introduce external light and be used to display corresponding sign patterns, such as floor information, emergency exits and other patterns.

[0045] Optionally, the plate structure 10 can be made of an injection molding material and manufactured by injection molding. For example, the plate structure 10 can be specifically made of an acrylic material and injection molded to form a transparent structure.

[0046] The first surface 101 and the second surface 102 refer to two opposite sides of the plate structure 10 in the thickness direction. When light is introduced from the light-incoming structure 20, the light can be introduced into the first surface 101 and the second surface 102 at the same time, so it can be suitable for double-sided light emitting lamps; and the transparent plate structure 10 can improve the uniformity of the brightness of the first surface 101 and the second surface 102, thereby improving the reflective effect of the plate structure 10.

[0047] The light incident structure 20 refers to a structure of the plate structure 10 at the side end facing the light source, so that the light emitted by the light source can enter the first surface 101 and the second surface 102 from the light incident end. Optionally, the light incident structure 20 can be, but is not limited to, a planar structure, a curved structure, etc.

[0048] The first surface 101 is provided with a plurality of first reflective structures 11; optionally, the first reflective structures 11 include but are not limited to reflective points, reflective convex parts, reflective strips and other structures with reflective effects. The first reflective structures 11 can reflect the light incident from the light incident structure 20, so that the light can be reflected and spread over the first surface 101 as much as possible, so that the first surface 101 can form a luminous state.

[0049] The number of the first reflective structures 11 may be two, three or more. For example, the number of the first reflective structures 11 may be multiple, and the multiple first reflective structures 11 may be arranged in an array on the first surface 101, and the multiple first reflective structures 11 reflect light.

[0050] The second surface 102 is provided with a plurality of second reflective structures 12; optionally, the second reflective structures 12 include but are not limited to reflective points, reflective convex parts, reflective strips and other structures with reflective effects. The second reflective structures 12 can reflect the light incident from the light incident structure 20, so that the light can be reflected and spread over the first surface 101 as much as possible, so that the first surface 101 can form a luminous state.

[0051] The number of the second reflective structures 12 can be two, three or more. For example, the number of the second reflective structures 12 can be multiple, and the multiple second reflective structures 12 can be arranged in an array on the second surface 102, and the multiple second reflective structures 12 reflect light.

[0052] It should be understood that the first direction X can be any direction parallel to the first surface 101 or the second surface 102; illustratively, the first direction X can be, but not limited to, the length direction, width direction, etc. of the plate structure 10. Similarly, the second direction Y can be any direction parallel to the first surface 101 or the second surface 102; illustratively, the second direction Y can be, but not limited to, the length direction, width direction, etc. of the plate structure 10. In some embodiments, optionally, the first direction X can be the length direction of the plate structure 10, and the second direction Y can be the width direction of the plate structure 10.

[0053] The light guide plate 100 provided in the embodiment of the present application is configured by respectively arranging a plurality of first light reflecting structures 11 and a plurality of second light reflecting structures 12 on the first surface 101 and the second surface 102 on opposite sides of the plate structure 10, and arranging a plurality of light incident structures 20 at one end of the plate structure 10 in the second direction Y, and the light incident structures 20 are sequentially arranged at intervals along the first direction X, thereby, the light source can be simultaneously incident into the plate structure 10 through the plurality of light incident structures 20, and the first surface 101 and the second surface 102 of the plate structure 10 can simultaneously perform reflective light guiding operations through the first light reflecting structures 11 and the second light reflecting structures 12, respectively, and the transparent plate structure 10 can improve the uniformity of light emission of the first surface 101 and the second surface 102, thereby effectively improving the reflective light guiding effect of the light on the plate structure 10, that is, the light guiding effect of the light guide plate 10 is better.

[0054] Please refer to Figures 2 to 7In some embodiments, the light incident structure 20 has a light incident end 21 facing the external light source, and the light incident end 21 is recessed inward to form an arc-shaped end surface.

[0055] The external light source refers to a light-emitting structure arranged outside the plate structure 10. Optionally, the light source structure may be an LED lamp bead, a light strip, or the like.

[0056] The light incident end 21 of the light incident structure 20 refers to an end surface on one side facing the external light source; exemplarily, in some embodiments, the light incident structure 20 can be a block structure protruding from one end of the plate structure 10 in the second direction Y, and the end of the block structure facing the external light source (i.e., the end facing away from the plate structure 10) is an arc-shaped end surface formed inwardly.

[0057] In this way, the light incident end 21 is set as an arc-shaped end face. When the external light source is set toward the arc-shaped end face, for example, the light source is set at the center of the arc of the arc-shaped end face, the refraction angle formed between the light emitted by the external light source and the arc-shaped end face is smaller, thereby effectively improving the light guiding effect of the light incident end 21, and further improving the light guiding and luminous effect of the light guide plate 100.

[0058] Please refer to Figures 2 to 7 In some embodiments, in the first direction X, the gaps between any two adjacent light incident structures 20 are equal.

[0059] It can be understood that the gap between any two adjacent light incident structures 20 is set to be equal, so that when the light incident end 21 of each light incident structure 20 introduces light from an external light source, the light enters the first surface 101 and the second surface 102, and the distribution of the light in the first direction X can be more uniform, thereby improving the luminous uniformity of the first surface 101 and the second surface 102, and further improving the luminous effect of the light guide plate 100.

[0060] Please refer to Figures 2 to 7 In some embodiments, along the thickness direction of the plate structure 10 , the projection of the first reflective structure 11 and the projection of the second reflective structure 12 are separated.

[0061] It can be understood that the first reflective structures 11 and the second reflective structures 12 do not overlap in the thickness direction of the plate structure 10. Exemplarily, the first reflective structures 11 can be arranged to form a plurality of rhombus-shaped structures, that is, four adjacent reflective structures are respectively located at the four endpoints of the rhombus, and similarly, the second reflective structures 12 can be arranged to form a plurality of rhombus-shaped structures; thus, in the thickness direction of the plate structure 10, each first reflective structure 11 is respectively located at the center of the rhombus structure composed of the corresponding second reflective structures 12, and each second reflective structure 12 is respectively located at the center of the rhombus structure composed of the corresponding first reflective structures 11.

[0062] With such configuration, the light on the first surface 101 and the light on the second surface 102 can complement each other through the transparent plate structure 10 , thereby effectively improving the uniformity of the brightness of the first surface 101 and the second surface 102 .

[0063] Please refer to Figures 2 to 7 In some embodiments, the first light reflecting structure 11 includes a plurality of rows of first light reflecting point groups 111 sequentially arranged at intervals along the second direction Y, the first light reflecting point groups 111 include a plurality of first light reflecting points 111a, and the first light reflecting points 111a are sequentially arranged at intervals along the first direction X;

[0064] The first reflective structure 11 further includes a plurality of rows of second reflective point groups 112 sequentially arranged at intervals along the second direction Y, the second reflective point groups 112 include a plurality of second reflective points 112a, and the second reflective points 112a are sequentially arranged at intervals along the first direction X;

[0065] In the second direction Y, the first light reflecting point groups 111 and the second light reflecting point groups 112 are arranged alternately in sequence, and in the second direction Y, the first light reflecting point 111 a is located between two adjacent second light reflecting points 112 a.

[0066] The first reflective point 111a refers to a dot-shaped protruding structure that can achieve a reflective effect. Optionally, the first reflective point 111a can be integrally formed on the plate structure 10. The first reflective points 111a can be arranged in sequence along the first direction X and combined to form a row of first reflective point groups 111; optionally, the first reflective point groups 111 can be two rows, three rows, or any number of rows above three rows, and the multiple rows of first reflective point groups 111 can be arranged along the second direction Y.

[0067] Similarly, the second reflective point 112a refers to a dot-shaped protruding structure that can achieve a reflective effect. Optionally, the second reflective point 112a can be integrally formed on the plate structure 10. The second reflective points 112a can be arranged in sequence along the first direction X and combined to form a row of second reflective point groups 112; optionally, the second reflective point groups 112 can be two rows, three rows, or any number of rows above three rows, and the multiple rows of second reflective point groups 112 can be arranged along the second direction Y.

[0068] The multiple rows of first reflective point groups 111 and the multiple rows of second reflective point groups 112 are arranged along the second direction Y, and the first reflective point groups 111 and the second reflective point groups 112 are arranged alternately in sequence; illustratively, in the second direction Y, the first row can be the first reflective point group 111, the second row can be the second reflective point group 112, the third row can be the first reflective point group 111, the fourth row can be the second reflective point group 112, and so on, they can be arranged alternately.

[0069] In the second direction Y, the first light reflecting point 111a is located between two adjacent second light reflecting points 112a. With such a configuration, after the light enters the first surface 101 from the light incident structure 20, the light can be reflected by the first light reflecting point 111a and the second light reflecting point 112a, and the first light reflecting point 111a and the second light reflecting point 112a can be staggered in the second direction Y, that is, the probability of forming an obstruction between the first light reflecting point 111a and the second light reflecting point 112a of the adjacent rows of the first light reflecting point group 111 and the second light reflecting point group 112 is low, and the effect of light reflection is better; therefore, the light distribution on the first surface 101 of the plate structure 10 is more uniform, and the light emitting effect of the light guide plate 100 is better.

[0070] Please refer to Figures 2 to 7 In some embodiments, in the second direction Y and away from the light incident structure 20, the gap between two adjacent groups of first light reflecting point groups 111 tends to decrease, and the gap between two adjacent groups of second light reflecting point groups 112 tends to decrease.

[0071] It can be understood that after the light enters the first surface 101 of the plate structure 10 from the light incident structure 20 , the intensity of the light tends to weaken as the propagation distance of the light increases.

[0072] Therefore, the gap between two adjacent groups of first reflective point groups 111 is set to show a decreasing trend in the second direction Y and in the direction away from the light incident structure 20, that is, the first reflective point groups 111 are arranged more densely away from the place where the light enters, and the first reflective points 111a of the first reflective point group 111 have a better light reflection effect, thereby balancing the light distribution in the second direction Y and further improving the brightness uniformity in the second direction Y.

[0073] Similarly, the gap between two adjacent groups of second reflective point groups 112 is set to show a decreasing trend in the second direction Y and in the direction away from the light incident structure 20, that is, the second reflective point groups 112 are arranged more densely away from the place where the light enters, and the second reflective points 112a of the second reflective point groups 112 have a better reflection effect on light, thereby balancing the light distribution in the second direction Y and further improving the brightness uniformity in the second direction Y.

[0074] With such a configuration, the distribution adjustment of the first reflective point group 111 and the second reflective point group 112 in the second direction Y can improve the influence of the weakened reflection of light during the propagation process, so as to improve the uniformity of light of the plate structure 10 in the second direction Y, and further improve the brightness effect of the plate structure 10 in the second direction Y. Therefore, the luminous effect of the light guide plate 100 is effectively improved.

[0075] Please refer to Figures 2 to 7In some embodiments, the second light reflecting structure 12 includes a plurality of rows of third light reflecting point groups 113 sequentially arranged at intervals along the second direction Y, the third light reflecting point groups 113 include a plurality of third light reflecting points 113a, and the third light reflecting points 113a are sequentially arranged at intervals along the first direction X;

[0076] The second reflective structure 12 further includes a plurality of rows of fourth reflective point groups 114 sequentially arranged at intervals along the second direction Y, the fourth reflective point groups 114 include a plurality of fourth reflective points 114a, and the fourth reflective points 114a are sequentially arranged at intervals along the first direction X;

[0077] In the second direction Y, the third light reflecting point groups 113 and the fourth light reflecting point groups 114 are arranged alternately in sequence, and in the second direction Y, the third light reflecting point 113a is located between two adjacent fourth light reflecting points 114a.

[0078] The third reflective point 113a refers to a dot-shaped protruding structure that can achieve a reflective effect. Optionally, the third reflective point 113a can be integrally formed on the plate structure 10. The third reflective points 113a can be arranged in sequence along the first direction X and combined to form a row of third reflective point groups 113; optionally, the third reflective point groups 113 can be two rows, three rows, or any number of rows above three rows, and the multiple rows of third reflective point groups 113 can be arranged along the second direction Y.

[0079] Similarly, the fourth reflective point 114a refers to a dot-shaped protruding structure that can achieve a reflective effect. Optionally, the fourth reflective point 114a can be integrally formed on the plate structure 10. The fourth reflective points 114a can be arranged in sequence along the first direction X and combined to form a row of fourth reflective point groups 114; optionally, the fourth reflective point groups 114 can be two rows, three rows, or any number of rows above three rows, and the multiple rows of fourth reflective point groups 114 can be arranged along the second direction Y.

[0080] The multiple rows of third reflective point groups 113 and the multiple rows of fourth reflective point groups 114 are all arranged along the second direction Y, and the third reflective point groups 113 and the fourth reflective point groups 114 are arranged alternately in sequence; illustratively, in the second direction Y, the third reflective point groups 113 can be the first row, the fourth reflective point groups 114 can be the second row, the third reflective point groups 113 can be the third row, the fourth row can be the fourth reflective point groups 114 can be the fourth row, and so on.

[0081] In the second direction Y, the third light reflecting point 113a is located between two adjacent fourth light reflecting points 114a. With such a configuration, after the light enters the second surface 102 from the light incident structure 20, the light can be reflected by the third light reflecting point 113a and the fourth light reflecting point 114a, and the third light reflecting point 113a and the fourth light reflecting point 114a can be staggered in the second direction Y, that is, the probability of forming an obstruction between the third light reflecting point 113a and the fourth light reflecting point 114a of the adjacent rows of the third light reflecting point group 113 and the fourth light reflecting point group 114 is low, and the effect of light reflection is better; therefore, the light distribution on the third surface and the fourth surface of the plate structure 10 is more uniform, and the light emitting effect of the light guide plate 100 is better.

[0082] Please refer to Figures 2 to 7 In some embodiments, in the second direction Y and away from the light incident structure 20, the gap between two adjacent groups of third light reflecting point groups 113 tends to decrease, and the gap between two adjacent groups of fourth light reflecting point groups 114 tends to decrease.

[0083] It can be understood that after the light enters the second surface 102 of the plate structure 10 from the light incident structure 20 , the intensity of the light tends to weaken as the propagation distance of the light increases.

[0084] Therefore, the gap between two adjacent groups of third reflective point groups 113 is set to show a decreasing trend in the second direction Y and in the direction away from the light incident structure 20, that is, the third reflective point groups 113 are arranged more densely away from the place where the light enters, and the third reflective points 113a of the third reflective point group 113 have a better light reflection effect, thereby balancing the light distribution in the second direction Y and further improving the brightness uniformity in the second direction Y.

[0085] Similarly, the gap between two adjacent groups of fourth reflective point groups 114 is set to show a decreasing trend in the second direction Y and in the direction away from the light incident structure 20, that is, the fourth reflective point groups 114 are arranged more densely away from the place where the light enters, and the fourth reflective points 114a of the fourth reflective point group 114 have a better reflection effect on light, thereby balancing the light distribution in the second direction Y and further improving the brightness uniformity in the second direction Y.

[0086] With such a configuration, the distribution adjustment of the third reflective point group 113 and the fourth reflective point group 114 in the second direction Y can improve the influence of the weakened reflection of light during the propagation process, so as to improve the uniformity of light of the plate structure 10 in the second direction Y, and further improve the brightness effect of the plate structure 10 in the second direction Y. Therefore, the luminous effect of the light guide plate 100 is effectively improved.

[0087] Please refer to Figures 1 to 7On the second aspect, the embodiment of the present application also provides a fire emergency sign light 1000, including a light source 200 and a light guide plate 100 as described above, the light source 200 is arranged on the outside of the light incident structure 20, and the light emission direction of the light source 200 is toward the light incident structure 20.

[0088] The fire emergency sign light 1000 provided in the embodiment of the present application includes the above-mentioned light guide plate 100. On the basis that the above-mentioned light guide plate 100 has a better light guiding effect, the display effect of the fire emergency sign light 1000 is better.

[0089] Please refer to Figures 1 to 7 In some embodiments, the light incident structure 20 has a light incident end 21 facing the external light source 200, and the light incident end 21 is recessed inward to form an arc-shaped end surface; the light source 200 is disposed at the center of the arc-shaped end surface.

[0090] It can be understood that the center of the arc-shaped end surface refers to the center of the arc of the arc-shaped end surface. Exemplarily, when the arc-shaped end surface is an arc segment at one end of a circle, the center of the arc-shaped end surface refers to the center of the circle.

[0091] In this arrangement, the light incident end 21 is an arc-shaped end face. When the light source 200 is arranged at the center of the arc of the arc-shaped end face and is arranged toward the arc-shaped end face, the light emitted by the light source 200 to the surroundings can tend to be vertically incident on the arc-shaped end face. The refraction angle formed between the light emitted by the light source 200 and the arc-shaped end face is small, thereby effectively improving the light guiding effect of the light incident end 21, and further improving the light guiding and luminous effect of the light guide plate 100.

[0092] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A light guide plate, characterized in that: include: A plate structure, wherein the plate structure is transparent and has a first surface and a second surface located on the other side of the first surface; A plurality of first light reflecting structures are arranged on the first surface, and a plurality of second light reflecting structures are arranged on the second surface; A light incident structure is disposed at one end of the plate structure in the second direction, the number of the light incident structures is at least two, and the light incident structures are sequentially arranged at intervals along the first direction; the first direction is perpendicular to the second direction.

2. The light guide plate according to claim 1, characterized in that: The light incident structure has a light incident end facing the external light source, and the light incident end is recessed inwardly to form an arc-shaped end surface.

3. The light guide plate according to claim 2, characterized in that: In the first direction, the gaps between any two adjacent light incident structures are equal.

4. The light guide plate according to claim 1, characterized in that: In the thickness direction of the plate structure, the projection of the first light reflecting structure is separated from the projection of the second light reflecting structure.

5. The light guide plate according to claim 4, characterized in that: The first light reflecting structure comprises a plurality of rows of first light reflecting point groups sequentially arranged at intervals along the second direction, the first light reflecting point groups comprise a plurality of first light reflecting points, and the first light reflecting points are sequentially arranged at intervals along the first direction; The first reflective structure further includes a plurality of rows of second reflective point groups sequentially arranged at intervals along the second direction, the second reflective point groups include a plurality of second reflective points, and the second reflective points are sequentially arranged at intervals along the first direction; In the second direction, the first light reflecting point group and the second light reflecting point group are arranged alternately in sequence, and in the second direction, the first light reflecting point is located between two adjacent second light reflecting points.

6. The light guide plate according to claim 5, characterized in that: In the second direction and in the direction away from the light incident structure, the gap between two adjacent groups of the first light reflecting points tends to decrease, and the gap between two adjacent groups of the second light reflecting points tends to decrease.

7. The light guide plate according to claim 4, characterized in that: The second light reflecting structure comprises a plurality of rows of third light reflecting point groups sequentially arranged at intervals along the second direction, the third light reflecting point groups comprise a plurality of third light reflecting points, and the third light reflecting points are sequentially arranged at intervals along the first direction; The second reflective structure further includes a plurality of rows of fourth reflective point groups sequentially arranged at intervals along the second direction, the fourth reflective point groups include a plurality of fourth reflective points, and the fourth reflective points are sequentially arranged at intervals along the first direction; In the second direction, the third light reflecting point group and the fourth light reflecting point group are arranged alternately in sequence, and in the second direction, the third light reflecting point is located between two adjacent fourth light reflecting points.

8. The light guide plate according to claim 7, characterized in that: In the second direction and in the direction away from the light incident structure, the gap between two adjacent groups of the third light reflecting point groups tends to decrease, and the gap between two adjacent groups of the fourth light reflecting point groups tends to decrease.

9. A fire emergency sign light, characterized in that: It comprises a light source and the light guide plate as described in any one of claims 1 to 8, wherein the light source is arranged outside the light incident structure, and the light emission direction of the light source is toward the light incident structure.

10. The fire emergency sign light according to claim 9, characterized in that: The light incident structure has a light incident end facing the external light source, and the light incident end is recessed inward to form an arc-shaped end surface; the light source is arranged at the center of the arc-shaped end surface.

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