CN210637824U

CN210637824U - LED lamp for blackboard illumination

Info

Publication number: CN210637824U
Application number: CN201921226632.4U
Authority: CN
Inventors: 胡栋; 黎朝进; 万秀锋; 段颖颖; 苟茜婷; 陈禄文; 钱茂
Original assignee: Chongqing Silian Photoelectric Science & Technology Co ltd
Current assignee: Chongqing Silian Photoelectric Science & Technology Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-05-29
Anticipated expiration: 2029-07-31

Abstract

The utility model relates to an illumination lamps and lanterns field, concretely relates to LED lamps and lanterns for blackboard illumination, including casing, LED light source, the casing is the section bar, separates the muscle by erectting in this section bar section and separates the muscle with the light source installation and separate into power setting area, light source setting area, and the power is installed in the power setting area, installs the reflector in the light source setting area, is provided with a plurality of reflection of light recesses on the reflector, and the tank bottom surface coating of each reflection of light recess has the reflector layer, sets up the lamp plate fixing base of L shape in the light source setting area, fixed mounting circuit board on the short arm of the lamp plate fixing base of L shape, the circuit board is equipped with a plurality of LED light sources and respectively with each reflection of light recess one-to-one, forms the structure at the lamp plate fixing base back that the LED light source was sheltered from in L shape, makes near the people that is located this LED, Is soft, can not form glare, makes students feel comfortable, and reduces visual fatigue.

Description

LED lamp for blackboard illumination

Technical Field

The utility model relates to an illumination lamps and lanterns field, concretely relates to LED lamps and lanterns for blackboard illumination.

Background

The blackboard is used as a teaching knowledge display platform and is an important facility for students to pay attention to the eyesight, and the illumination intensity and uniformity on the blackboard have great influence on the eyesight of children. According to statistics, the myopia rate of teenagers in China is in an increasing trend, and the illumination intensity and uniformity on a blackboard become one of important factors influencing the myopia of the teenagers. The traditional blackboard illuminating lamp generally adopts a fluorescent lamp, a light source of the fluorescent lamp irradiates in a downward fan shape, the fluorescent lamp is easy to form direct vision with eyes of students, the discomfort of the students is easy to be serious due to glare of the fluorescent lamp, the visual fatigue of the students is caused, the fluorescent lamp does not have a secondary light distribution design, the illuminance and the uniformity of the irradiated blackboard surface are relatively poor, and the influence on the eyesight of the students is large.

The blackboard LED lamp with the publication number of CN 105042444A discloses a blackboard illuminating lamp adopting an LED light source, and the blackboard LED lamp comprises the LED light source and a lens, wherein the cross section of the lens is approximately of a quadrilateral structure, the bottom surface of the lens is provided with an incident surface, and the incident surface is approximately positioned right above the LED light source and covers the LED light source, so that most of light rays emitted by the LED light source enter the incident surface. The blackboard LED lamp is provided with the lens with the cross section being approximately quadrangular, so that after light rays emitted by the LED light source enter the incident surface of the lens, a part of the light rays are reflected by the reflecting surface on one side surface and then refracted by the first emergent surface to be emitted, and a part of the light rays are directly refracted by the second emergent surface on the other side surface and then emitted, so that the light rays are deviated to one side of the lens. However, due to the structure of the blackboard LED lamp, people below and nearby the blackboard LED lamp can see the LED light source behind the lens from the lens, and because the light emitted by the LED light source is strong and dazzling, the eyes of people below and nearby the blackboard LED lamp are often irradiated by the strong light of the LED light source, and the eyes are injured.

Disclosure of Invention

The utility model aims at the not enough that prior art corresponds, a LED lamps and lanterns for blackboard illumination are provided, the light that the LED light source of this kind of LED lamps and lanterns sent reflects lamps and lanterns to the blackboard illumination through the reflector that is used for the reflection of light, and the people that is located blackboard LED lamps and lanterns below and near can not directly see the LED light source outside lamps and lanterns, the strong light that the people that is located this LED lamps and lanterns below and near can not directly accept the LED light source is shone, make the LED light source can not form with student's eyes and look straight, and the light that the LED light source of the LED lamps and lanterns of this kind of structure sent reflects behind reflector secondary grading, can let this LED lamps and lanterns for blackboard illumination shine the light on the blackboard more even, soft, can not form the glare, can alleviate student's visual fatigue, let the student feel comfortable.

The utility model aims at adopting the following scheme to realize: an LED lamp for blackboard illumination comprises a shell and an LED light source, wherein the shell is a manufactured and formed section, a power supply setting area and a light source setting area are separated into a vertical separating rib and a transverse light source mounting separating rib in the section of the section, a power supply is installed in the power supply setting area, a reflector is installed on one side of the vertical separating rib in the light source setting area, the upper end of the reflector is fixedly connected with the transverse light source mounting separating rib, the lower end of the reflector is fixedly connected with the lower side wall of the shell, a plurality of reflecting grooves are arranged on the reflector side by side, a reflecting layer is coated on the surface of the bottom of each reflecting groove, an L-shaped lamp panel fixing seat is arranged below the light source mounting separating rib in the light source setting area, the short arm end of the L-shaped lamp panel fixing seat extends upwards to be fixedly connected with the light source mounting separating rib, and the long arm end of the L-shaped, the short arm of the lamp plate fixing base that makes L shape is towards the reflector, this short arm towards one side fixed mounting circuit board of reflector, the circuit board be equipped with a plurality of LED light sources respectively with each reflection of light recess one-to-one, form the structure at the lamp plate fixing base back that the LED light source was sheltered from at L shape, the lateral wall is shorter than the lateral wall on the casing under the casing, makes under the casing under the lateral wall and the lamp plate fixing base of L shape under the casing form the uncovered that light jetted out, an installation light-passing board in this uncovered, lateral wall fixed connection under the lower extreme of light-passing board and the casing, the upper end of light-passing board and the long arm fixed connection of the lamp plate fixing base of L shape.

The section of the shell is used for connecting the vertical separating rib of the shell for separating the power supply setting area and the light source setting area with the upper side wall and the lower side wall of the shell, the vertical separating rib is connected with the side wall at the upper end of the opening through the transverse light source mounting separating rib, the transverse light source mounting separating rib is in a bent shape, one end connected with the vertical separating rib is higher than one end connected with the side wall at the upper end of the opening, the end part of the side wall and the bending high position are both provided with clamping grooves for clamping and fixing the L-shaped lamp panel fixing seat, the transverse light source mounting separating rib between the clamping groove at the bending high position and the vertical separating rib is provided with an upper clamping groove for clamping and fixing the reflector, the end part of the lower side wall of the shell is provided with a fixing groove for clamping and fixing the light-passing board, the lower clamping groove for clamping and fixing the reflector is arranged on the lower side wall between the fixing groove and the vertical separating, one end of the reflector is clamped and fixed in the upper clamping groove, the other end of the reflector is clamped and fixed in the lower clamping groove, one end of the light-transmitting plate is clamped and fixed in the fixing groove, and the other end of the light-transmitting plate is clamped and fixed in the clamping groove.

The short arm end and the long arm end of the lamp plate fixing base of the L shape are both provided with fixing chucks which are respectively clamped and fixed with the corresponding clamping grooves on the light source installation separation rib.

The cross section of the fixing clamping head is arc-shaped or T-shaped, and the cross section of the clamping groove of the light source installation spacer rib is arc-shaped or T-shaped corresponding to the fixing clamping head.

The end face of the shell is provided with a plurality of screw fixing columns extending along the axial direction, two axial ends of the shell are respectively provided with an end cover fixing plate through screw fixing, clamping holes are formed in the end cover fixing plate, and the end covers are clamped with the clamping holes in the end cover fixing plate through elastic clamps and are fixedly installed at two axial ends of the shell.

The reflector is a rectangular plate, a row of light reflecting grooves are longitudinally arranged along the rectangular plate, and the bottom surface of each light reflecting groove is coated with a light reflecting layer which is an aluminum coating.

The rectangular plate is made of a polycarbonate material plate, the light reflecting grooves are arc grooves, and the arc grooves and the polycarbonate material plate are integrally formed.

The power sets up the district and lies in erectting to separate the muscle downside and set up a spacing boss for spacing to the power, the power passes through screw fixed connection and lies in erectting one side that separates the muscle in the power sets up the district.

The casing upper end is equipped with along the T-slot of axial extension, and two at least lamps and lanterns mounting brackets and T-slot joint fixed mounting are in the casing upper end.

The one side of the short arm of the lamp plate fixing base of L shape towards the reflector is equipped with the installation constant head tank of circuit board, and the circuit board is installed and is passed through the fix with screw in the installation constant head tank.

Adopt the beneficial effect of above-mentioned scheme:

the shell is a manufactured and formed section bar, a power supply setting area and a light source setting area are separated from the section of the section bar by a vertical spacing rib and a transverse light source installation spacing rib, a power supply is installed in the power supply setting area, a reflector is installed at one side of the vertical spacing rib in the light source setting area, the upper end of the reflector is fixedly connected with the transverse light source installation spacing rib, the lower end of the reflector is fixedly connected with the lower side wall of the shell, a plurality of light reflecting grooves are arranged on the reflector side by side, a light reflecting layer is coated on the bottom surface of each light reflecting groove, an L-shaped lamp panel fixing seat is arranged below the light source installation spacing rib in the light source setting area, the short arm end of the L-shaped lamp panel fixing seat extends upwards and is fixedly connected with the light source installation spacing rib, the long arm end of the L-shaped lamp panel fixing seat extends transversely and is fixedly connected with, fixed mounting circuit board on this short arm, the circuit board is equipped with a plurality of LED light sources respectively with each reflection of light recess one-to-one, forms the structure that the LED light source was sheltered from at the lamp plate fixing base back of L shape, and the light that the LED light source sent reflects the lamps and lanterns through the reflection of light recess on the reflector and to the blackboard illumination, and the people that are located blackboard LED lamp below and near can not directly see the LED light source outside the lamps and lanterns, make the eyes that are located blackboard LED lamp below and near can not directly receive the injury of the strong light irradiation of LED light source, make people's eyes obtain the protection from this. And the lamp plate fixing base of this kind of L shape makes lamp plate fixing base and light source installation leave certain clearance space between separating the muscle, makes the air can circulate for the heat dissipation of circuit board in this clearance space. Lateral wall is short on the lateral wall than the casing under the casing, makes under the casing lateral wall and L shape the lamp plate fixing base between form the uncovered that light jetted out, an installation light-passing board in this uncovered, lateral wall fixed connection under the lower extreme of light-passing board and the casing, the upper end of light-passing board and the long arm fixed connection of the lamp plate fixing base of L shape, the end cover is installed respectively at the axial both ends of casing, because this kind of open structure, makes this a LED lamps and lanterns for blackboard illumination uncovered facing to the blackboard when the installation, and its light that shines out shines through uncovered rectangle irradiation area of formation and throws light on to the blackboard. Because the LED light sources are in one-to-one correspondence with the reflecting grooves respectively, light emitted by the LED light sources is reflected after secondary light distribution through the reflecting grooves, the light irradiated on the blackboard by the LED lamp for blackboard illumination is more uniform and softer, glare is not formed, visual fatigue of students can be relieved, and the students feel comfortable.

The reflector, the light-transmitting plate and the LED light source are fixed by the clamping and fixing structure according to the set positions without screws, so that the LED light source fixing structure is convenient to install, can ensure that the position of the LED light source fixing structure is not easy to deviate, and is favorable for the accuracy of secondary light distribution.

The LED lamp is characterized in that a plurality of screw fixing columns extending along the axial direction are arranged on the end face of the shell, end cover fixing plates are respectively arranged at two ends of the shell in the axial direction through the screw fixing, clamping holes are formed in the end cover fixing plates, the end covers are clamped with the clamping holes in the end cover fixing plates through elastic clamps, and the end covers are fixedly arranged at two ends of the shell in the axial direction, so that the LED lamp is convenient to assemble and attractive in appearance.

The reflector is a rectangular plate, a row of light reflecting grooves are longitudinally formed along the rectangular plate, and the light reflecting layers coated on the bottom surfaces of the light reflecting grooves are aluminum-plated layers, so that the light reflecting capacity of the light reflecting grooves to light is enhanced, and the light emitted by the corresponding LED light sources can be reflected out of the lamp along the open longitudinal uniform distribution by the light reflecting grooves.

The rectangular plate is made of a polycarbonate material plate, the light reflecting groove is an arc groove, the arc groove and the polycarbonate material plate are integrally formed, the polycarbonate material plate is easy to produce, high in strength, wide in use temperature range, good in flame retardance, low in forming shrinkage rate and good in size stability, the position of the light reflecting groove is not prone to being deviated due to deformation, accuracy of secondary light distribution is guaranteed, and meanwhile safety of use of the LED lamp is guaranteed.

The power sets up the district and lies in erectting to separate the muscle downside and set up a spacing boss for it is spacing to carry out the power, the power sets up the district through screw fixed connection and lies in erectting one side that separates the muscle in the district, carries out spacing fixed to the power, makes its position be difficult to take place the skew.

The LED lamp is characterized in that a T-shaped groove extending along the axial direction is formed in the upper end of the shell, and at least two lamp mounting frames are fixedly mounted on the upper end of the shell in a clamping mode with the T-shaped groove, so that the LED lamp is convenient to mount and easy to dismount.

The one side of the short arm of the lamp plate fixing base of L shape towards the reflector is equipped with the installation constant head tank of circuit board, and the circuit board is installed and is fixed through the screw in the installation constant head tank, carries out spacing installation to the circuit board, is difficult to take place the skew.

The structure of the LED lamp has the advantages that light emitted by the LED light source is reflected out of the lamp through the reflector for reflecting light to illuminate the blackboard, people below and near the blackboard LED lamp cannot directly see the LED light source from the outside of the lamp, eyes of people below and near the LED lamp cannot directly receive strong light irradiation of the LED light source, the LED light source cannot form direct vision with eyes of students, and the light emitted by the LED light source of the LED lamp with the structure is reflected out after secondary light distribution of the reflector, so that the light irradiated on the blackboard by the LED lamp for blackboard illumination is more uniform and soft, glare cannot be formed, visual fatigue of the students can be relieved, and the students feel comfortable.

Drawings

FIG. 1 is an exploded view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a cross-sectional view of the housing of the present invention;

fig. 4 is a side view of the L-shaped lamp panel fixing base of the present invention;

fig. 5 is a schematic structural diagram of the end cover fixing plate and the end cover of the present invention.

Detailed Description

As shown in fig. 1 to 5, an LED lamp for blackboard illumination, includes casing 1, LED light source 2, casing 1 is the fashioned section bar of preparation, separates muscle 3 and horizontal light source installation by erectting in the section of this section bar and separates into power setting area 5, light source setting area 6 with muscle 4, installation power 7 in the power setting area 5, the power sets up and sets up a spacing boss 31 in the 3 downside of separating the muscle of erectting in the area 5 for spacing to power 7, power 7 passes through screw fixed connection and lies in the one side of erectting separating muscle 3 in the power setting area 5, carries out spacing fixed to power 7, makes its position be difficult to take place the skew. Locate to erect in the light source setting area 6 and separate 3 side-mounting reflectors 8 of muscle, the upper end and the horizontal light source installation of reflector 8 separate 4 fixed connection of muscle, lateral wall 12 fixed connection under lower extreme and the casing 1, be provided with a plurality of reflection of light recesses 9 on the reflector 8 side by side, the tank bottom surface coating of each reflection of light recess 9 has the reflector layer, in this embodiment, reflector 8 is a rectangular plate, vertically sets up one row of reflection of light recess 9 along this rectangular plate, and the reflector layer of the tank bottom surface coating of each reflection of light recess 9 is the layer of aluminizing to reinforcing reflection of light recess 9 is to the reflective capacity of light, makes reflection of light recess 9 can reflect the lamps and lanterns along uncovered 20 vertical evenly distributed with the light that corresponding LED light source 2 sent. The rectangular plate is made of a polycarbonate material plate, the polycarbonate material plate is easy to produce, not only is high in strength, wide in use temperature range, good in flame retardance, low in forming shrinkage rate and good in size stability, the reflecting groove 9 is an arc groove, and the arc groove and the polycarbonate material plate are integrally formed, so that the arc groove is not prone to being deformed to cause position deviation of the arc groove, accuracy of secondary light distribution is guaranteed, and meanwhile safety of use of the LED lamp is guaranteed. The utility model discloses a lamp plate fixing base 10, including lamp plate fixing base 10, light source setting district 6, the short arm end of lamp plate fixing base 10 of L shape upwards extends and separates muscle 4 fixed connection with the light source installation in the light source installation that is located the light source installation in the district 4 below setting up L shape, and the long arm end of lamp plate fixing base 10 of L shape transversely extends and 1 lateral wall fixed connection of casing, makes the short arm of lamp plate fixing base 10 of L shape towards reflector 8, this short arm towards one side fixed mounting circuit board 11 of reflector 8, in this embodiment, the short arm of lamp plate fixing base 10 of L shape is equipped with circuit board 11's installation constant head tank 29 towards reflector 8's one side, and circuit board 11 installs through the fix with screw in installation constant head tank 29, carries out spacing installation to. The circuit board 11 is equipped with a plurality of LED light sources 2 respectively with each reflection of light recess 9 one-to-one, form the structure at the lamp plate fixing base 10 back that LED light source 2 was sheltered from L shape, the light that LED light source 2 sent reflects the lamps and lanterns through reflection of light recess 9 on the reflector 8 and to the blackboard illumination, and the people that are located blackboard LED lamp below and near can not directly see LED light source 2 outside the lamps and lanterns, make the eyes that are located blackboard LED lamp below and near can not directly receive the injury of LED light source 2's strong light irradiation, make people's eyes protected from this. And the lamp plate fixing base 10 of this kind of L shape makes lamp plate fixing base 10 and light source installation separate and leave certain clearance space between the muscle 4, makes the air can circulate for the heat dissipation of circuit board 11 in this clearance space. Lateral wall 12 is shorter than lateral wall 13 on the casing 1 under 1, makes under 1 casing lateral wall 12 and the lamp plate fixing base 10 of L shape between form the uncovered 20 that light jetted out, installs a light-passing board 14 in this uncovered 20, lateral wall 12 fixed connection under 14 lower extreme of light-passing board and the casing 1, the upper end of light-passing board 14 and the long arm fixed connection of the lamp plate fixing base 10 of L shape, end cover 15 is installed respectively at the axial both ends of casing 1, owing to this kind of uncovered 20 structure, makes this LED lamps and lanterns for blackboard illumination uncovered 20 facing to the blackboard when the installation, and its light that shines out forms a rectangle irradiation area through uncovered 20 and throws light on the blackboard. Because the LED light sources 2 are respectively in one-to-one correspondence with the reflecting grooves 9, light emitted by the LED light sources 2 is reflected after secondary light distribution is carried out through the reflecting grooves 9 on the reflector 8, the light irradiated on the blackboard by the LED lamp for blackboard illumination is more uniform and softer, glare is not formed, visual fatigue of students can be relieved, and the students feel comfortable. The section bar section of casing 1 separates the power setting district 5 with casing 1 and erects that separates muscle 3 and casing 1's upper and lower lateral wall links to each other, erects and separates muscle 3 and the lateral wall 21 of uncovered 20 upper end and separates muscle 4 by horizontal light source installation and link to each other, horizontal light source installation separates muscle 4 and is the shape of buckling, and the one end that separates muscle 3 and link to each other with erectting is higher than the one end that links to each other with the lateral wall 21 of uncovered 20 upper end, lateral wall 21 tip and the high position department of buckling all are equipped with the draw-in groove 22 that is used for the fixed L shape's of joint lamp plate fixing base 10, the short arm end and the long arm end of the lamp plate fixing base 10 of L shape all are equipped with fixed dop 26, and the draw-in groove 22 joint that corresponds on. The section of the fixing chuck 26 is arc-shaped or T-shaped, the section of the clamping groove 22 of the light source installation separating rib 4 is arc-shaped or T-shaped corresponding to the fixing chuck 26, in this embodiment, the section of the fixing chuck 26 is arc-shaped, the section of the clamping groove 22 of the light source installation separating rib 4 is arc-shaped corresponding to the fixing chuck 26, an upper clamping groove 23 for clamping and fixing the reflector 8 is arranged on the transverse light source installation separating rib 4 between the bending high-position clamping groove 22 and the vertical separating rib 3, a fixing groove 24 for clamping and fixing the light-transmitting plate 14 is arranged at the end part of the lower side wall 12 of the shell 1, a lower clamping groove 19 for clamping and fixing the reflector 8 is arranged on the lower side wall 12 between the fixing groove 24 and the vertical separating rib 3, a clamping groove 25 for clamping and fixing the light-transmitting plate 14 is arranged on the lower end face of the long arm of the L-shaped fixing seat 10, one end of the reflector, the other end joint is fixed in lower draw-in groove 19, the one end joint of light-passing board 14 is fixed in fixed slot 24, and the other end joint is fixed in joint groove 25, utilizes the fixed structure of joint to fix reflector 8, light-passing board 14 and LED light source 2 according to the position that sets for, does not need the screw, and not only simple to operate can also guarantee that its position is difficult to produce the skew, is favorable to the degree of accuracy of secondary grading. The end face of the shell 1 is provided with a plurality of screw fixing columns 30 extending along the axial direction, the two axial ends of the shell 1 are respectively provided with an end cover fixing plate 18 through screw fixing, a clamping hole 27 is formed in the end cover fixing plate 18, the end cover 15 is clamped with the clamping hole 27 in the end cover fixing plate 18 through an elastic clamp 17, and the two axial ends of the shell 1 are installed and fixed, so that the LED lamp is convenient to assemble and attractive in appearance. The upper end of the shell 1 is provided with a T-shaped groove 28 extending along the axial direction, and the at least two lamp mounting frames 16 are fixedly mounted at the upper end of the shell 1 in a clamping manner with the T-shaped groove 28, so that the LED lamp is convenient to mount and easy to dismount.

When in use, the LED lamp for blackboard illumination is arranged right in front of the blackboard, the opening 20 of the LED lamp faces the blackboard, after the power is on, the light emitted by the LED light source 2 in the LED lamp is reflected out of the lamp through the reflecting groove 9 on the reflector 8 to illuminate the blackboard, the people under and near the blackboard LED lamp can not directly see the LED light source 2 from the outside of the lamp, the eyes of the people under and near the LED lamp can not directly receive the strong light irradiation of the LED light source 2, so that the LED light source 2 can not form direct vision with the eyes of students, and the light emitted by the LED light source 2 of the LED lamp with the structure is reflected after secondary light distribution through the light reflecting groove 9 on the reflector 8, so that the light irradiated on the blackboard by the LED lamp for blackboard illumination is more uniform and softer, glare is not formed, the visual fatigue of students can be relieved, and the students feel comfortable.

The above only be the utility model discloses a preferred embodiment to be not used for the restriction the utility model discloses, technical personnel in the field are not deviating from the utility model discloses a under the prerequisite of spirit, right the utility model discloses the change of going on all falls into the utility model discloses a protection scope.

Claims

1. The utility model provides a LED lamps and lanterns for blackboard illumination, includes casing (1), LED light source (2), its characterized in that: the light source lamp is characterized in that the shell (1) is a section bar formed by manufacturing, a power supply setting area (5) and a light source setting area (6) are separated into by a vertical separating rib (3) and a transverse light source mounting separating rib (4) in the section of the section bar, a power supply (7) is installed in the power supply setting area (5), a reflector (8) is installed on one side of the vertical separating rib (3) in the light source setting area (6), the upper end of the reflector (8) is fixedly connected with the transverse light source mounting separating rib (4), the lower end of the reflector is fixedly connected with the lower side wall (12) of the shell (1), a plurality of reflecting grooves (9) are arranged on the reflector (8) side by side, a reflecting layer is coated on the surface of the bottom of each reflecting groove (9), an L-shaped lamp panel fixing seat (10) is arranged below the light source mounting separating rib (4) in the light source setting area (6), and the short arm end of the L-shaped lamp panel fixing seat (10, the long arm end of the L-shaped lamp panel fixing seat (10) transversely extends to be fixedly connected with the side wall of the shell (1), so that the short arm of the L-shaped lamp panel fixing seat (10) faces the reflector (8), the short arm faces one side of the reflector (8) and is fixedly provided with the circuit board (11), the circuit board (11) is provided with a plurality of LED light sources (2) which respectively correspond to the light reflecting grooves (9) one by one, a structure that the LED light sources (2) are shielded at the back of the L-shaped lamp panel fixing seat (10) is formed, the lower side wall (12) of the shell (1) is shorter than the upper side wall (13) of the shell (1), an opening (20) for emitting light is formed between the lower side wall (12) of the shell (1) and the L-shaped lamp panel fixing seat (10), a light transmission plate (14) is installed in the opening (20), the lower end of the light transmission plate (14) is fixedly connected with the lower side wall (12) of the shell (1), and the upper end of the, and end covers (15) are respectively arranged at two axial ends of the shell (1).

2. The LED light fixture for blackboard illumination of claim 1, wherein: the section bar section of casing (1) separates casing (1) and separates that power setting district (5) and light source set up district (6) erect and separate muscle (3) and link to each other with the upper and lower lateral wall of casing (1), erect and separate lateral wall (21) of muscle (3) and uncovered (20) upper end and separate muscle (4) by horizontal light source installation and link to each other, horizontal light source installation separates muscle (4) and is the shape of buckling, and with erect and separate the one end that muscle (3) link to each other and be higher than the one end that links to each other with lateral wall (21) of uncovered (20) upper end, lateral wall (21) tip and the high position department of buckling all are equipped with draw-in groove (22) that are used for the fixed L shape's of joint lamp plate fixing base (10), are equipped with last draw-in groove (23) that are used for joint fixed reflector (8) on draw-in groove (22) of the high position of buckling and erect and separate the horizontal light source installation between muscle (3) and separate muscle (4), and be equipped with the fixed slot (14) that 24) The utility model discloses a lamp panel fixing device, be equipped with lower draw-in groove (19) that are used for joint fixed reflector (8) on fixed slot (24) and erect lower lateral wall (12) between separating muscle (3), the terminal surface is equipped with joint groove (25) that are used for the fixed light-passing board of joint (14) under the long arm of the lamp plate fixing base (10) of L shape, reflector (8) one end joint is fixed in last draw-in groove (23), and the other end joint is fixed under in draw-in groove (19), the one end joint of light-passing board (14) is fixed in fixed slot (24), and the other end joint is fixed in joint groove (25).

3. The LED light fixture for blackboard illumination of claim 1, wherein: the short arm end and the long arm end of lamp plate fixing base (10) of L shape all are equipped with fixed dop (26), and it is fixed with draw-in groove (22) joint that light source installation separates to correspond on muscle (4) respectively.

4. The LED light fixture for blackboard illumination of claim 3, wherein: the section of the fixed clamping head (26) is arc-shaped or T-shaped, and the section of the clamping groove (22) of the light source installation spacer rib (4) is arc-shaped or T-shaped corresponding to the fixed clamping head (26).

5. The LED light fixture for blackboard illumination of claim 1, wherein: casing (1) terminal surface is provided with a plurality of fix with screw (30) along axial extension, there are end cover fixed plate (18) at the axial both ends of casing (1) through fix with screw respectively, is equipped with card hole (27) on end cover fixed plate (18), end cover (15) are through card hole (27) joint on elastic clip (17) and end cover fixed plate (18), and the installation is fixed at the axial both ends of casing (1).

6. The LED light fixture for blackboard illumination of claim 1, wherein: the reflector (8) is a rectangular plate, a row of light reflecting grooves (9) are longitudinally arranged along the rectangular plate, and the bottom surface of each light reflecting groove (9) is coated with a light reflecting layer which is an aluminum coating.

7. The LED light fixture for blackboard illumination of claim 6, wherein: the rectangular plate is made of a polycarbonate material plate, the light reflecting grooves (9) are arc grooves, and the arc grooves and the polycarbonate material plate are integrally formed.

8. The LED light fixture for blackboard illumination of claim 1, wherein: the power sets up and lies in erectting in district (5) and separate muscle (3) downside and set up a spacing boss (31) for it is spacing to carry out power (7), power (7) set up the district (5) through screw fixed connection in the power and lie in erectting one side that separates muscle (3).

9. The LED light fixture for blackboard illumination of claim 1, wherein: casing (1) upper end is equipped with along axial extension's T-slot (28), and two at least lamps and lanterns mounting bracket (16) and T-slot (28) joint fixed mounting are in casing (1) upper end.

10. The LED light fixture for blackboard illumination of claim 1, wherein: the one side of the minor limb of lamp plate fixing base (10) of L shape towards reflector (8) is equipped with installation constant head tank (29) of circuit board (11), and circuit board (11) are installed and are passed through the fix with screw in installation constant head tank (29).