I have ckpt files like these and that is all I have:

I wonder how to use these files to have a graph in tensorboard. If I have pb files, I don't need to run the graph, I just need to import the graph. All I have to do is using code:
import os
import tensorflow as tf
inception_graph_def_file = os.path.join('./', 'tensorflow_inception_graph.pb')
with tf.Session() as sess:
with tf.gfile.FastGFile(inception_graph_def_file, 'rb') as f:
graph_def = tf.GraphDef()
graph_def.ParseFromString(f.read())
tf.import_graph_def(graph_def, name='')
writer = tf.summary.FileWriter('./', sess.graph)
writer.close()
So, is there any ideas to using ckpt files like pb files?